diff --git a/Documentation/input/elantech.txt b/Documentation/input/elantech.txt index 5602eb71ad5d..e1ae127ed099 100644 --- a/Documentation/input/elantech.txt +++ b/Documentation/input/elantech.txt @@ -504,9 +504,12 @@ byte 5: * reg_10 bit 7 6 5 4 3 2 1 0 - 0 0 0 0 0 0 0 A + 0 0 0 0 R F T A A: 1 = enable absolute tracking + T: 1 = enable two finger mode auto correct + F: 1 = disable ABS Position Filter + R: 1 = enable real hardware resolution 6.2 Native absolute mode 6 byte packet format ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/Makefile b/Makefile index 1be3414a141f..317d5eab3c66 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,6 @@ VERSION = 3 PATCHLEVEL = 2 -SUBLEVEL = 59 +SUBLEVEL = 60 EXTRAVERSION = NAME = Saber-toothed Squirrel diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S index 1c893f05d224..21ecdf5e55f9 100644 --- a/arch/powerpc/lib/crtsavres.S +++ b/arch/powerpc/lib/crtsavres.S @@ -230,6 +230,87 @@ _GLOBAL(_rest32gpr_31_x) mr 1,11 blr +#ifdef CONFIG_ALTIVEC +/* Called with r0 pointing just beyond the end of the vector save area. */ + +_GLOBAL(_savevr_20) + li r11,-192 + stvx vr20,r11,r0 +_GLOBAL(_savevr_21) + li r11,-176 + stvx vr21,r11,r0 +_GLOBAL(_savevr_22) + li r11,-160 + stvx vr22,r11,r0 +_GLOBAL(_savevr_23) + li r11,-144 + stvx vr23,r11,r0 +_GLOBAL(_savevr_24) + li r11,-128 + stvx vr24,r11,r0 +_GLOBAL(_savevr_25) + li r11,-112 + stvx vr25,r11,r0 +_GLOBAL(_savevr_26) + li r11,-96 + stvx vr26,r11,r0 +_GLOBAL(_savevr_27) + li r11,-80 + stvx vr27,r11,r0 +_GLOBAL(_savevr_28) + li r11,-64 + stvx vr28,r11,r0 +_GLOBAL(_savevr_29) + li r11,-48 + stvx vr29,r11,r0 +_GLOBAL(_savevr_30) + li r11,-32 + stvx vr30,r11,r0 +_GLOBAL(_savevr_31) + li r11,-16 + stvx vr31,r11,r0 + blr + +_GLOBAL(_restvr_20) + li r11,-192 + lvx vr20,r11,r0 +_GLOBAL(_restvr_21) + li r11,-176 + lvx vr21,r11,r0 +_GLOBAL(_restvr_22) + li r11,-160 + lvx vr22,r11,r0 +_GLOBAL(_restvr_23) + li r11,-144 + lvx vr23,r11,r0 +_GLOBAL(_restvr_24) + li r11,-128 + lvx vr24,r11,r0 +_GLOBAL(_restvr_25) + li r11,-112 + lvx vr25,r11,r0 +_GLOBAL(_restvr_26) + li r11,-96 + lvx vr26,r11,r0 +_GLOBAL(_restvr_27) + li r11,-80 + lvx vr27,r11,r0 +_GLOBAL(_restvr_28) + li r11,-64 + lvx vr28,r11,r0 +_GLOBAL(_restvr_29) + li r11,-48 + lvx vr29,r11,r0 +_GLOBAL(_restvr_30) + li r11,-32 + lvx vr30,r11,r0 +_GLOBAL(_restvr_31) + li r11,-16 + lvx vr31,r11,r0 + blr + +#endif /* CONFIG_ALTIVEC */ + #else /* CONFIG_PPC64 */ .globl _savegpr0_14 @@ -353,6 +434,111 @@ _restgpr0_31: mtlr r0 blr +#ifdef CONFIG_ALTIVEC +/* Called with r0 pointing just beyond the end of the vector save area. */ + +.globl _savevr_20 +_savevr_20: + li r12,-192 + stvx vr20,r12,r0 +.globl _savevr_21 +_savevr_21: + li r12,-176 + stvx vr21,r12,r0 +.globl _savevr_22 +_savevr_22: + li r12,-160 + stvx vr22,r12,r0 +.globl _savevr_23 +_savevr_23: + li r12,-144 + stvx vr23,r12,r0 +.globl _savevr_24 +_savevr_24: + li r12,-128 + stvx vr24,r12,r0 +.globl _savevr_25 +_savevr_25: + li r12,-112 + stvx vr25,r12,r0 +.globl _savevr_26 +_savevr_26: + li r12,-96 + stvx vr26,r12,r0 +.globl _savevr_27 +_savevr_27: + li r12,-80 + stvx vr27,r12,r0 +.globl _savevr_28 +_savevr_28: + li r12,-64 + stvx vr28,r12,r0 +.globl _savevr_29 +_savevr_29: + li r12,-48 + stvx vr29,r12,r0 +.globl _savevr_30 +_savevr_30: + li r12,-32 + stvx vr30,r12,r0 +.globl _savevr_31 +_savevr_31: + li r12,-16 + stvx vr31,r12,r0 + blr + +.globl _restvr_20 +_restvr_20: + li r12,-192 + lvx vr20,r12,r0 +.globl _restvr_21 +_restvr_21: + li r12,-176 + lvx vr21,r12,r0 +.globl _restvr_22 +_restvr_22: + li r12,-160 + lvx vr22,r12,r0 +.globl _restvr_23 +_restvr_23: + li r12,-144 + lvx vr23,r12,r0 +.globl _restvr_24 +_restvr_24: + li r12,-128 + lvx vr24,r12,r0 +.globl _restvr_25 +_restvr_25: + li r12,-112 + lvx vr25,r12,r0 +.globl _restvr_26 +_restvr_26: + li r12,-96 + lvx vr26,r12,r0 +.globl _restvr_27 +_restvr_27: + li r12,-80 + lvx vr27,r12,r0 +.globl _restvr_28 +_restvr_28: + li r12,-64 + lvx vr28,r12,r0 +.globl _restvr_29 +_restvr_29: + li r12,-48 + lvx vr29,r12,r0 +.globl _restvr_30 +_restvr_30: + li r12,-32 + lvx vr30,r12,r0 +.globl _restvr_31 +_restvr_31: + li r12,-16 + lvx vr31,r12,r0 + blr + +#endif /* CONFIG_ALTIVEC */ + #endif /* CONFIG_PPC64 */ #endif diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h index 439a9acc132d..48fa3915fd02 100644 --- a/arch/x86/include/asm/hugetlb.h +++ b/arch/x86/include/asm/hugetlb.h @@ -51,6 +51,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { + ptep_clear_flush(vma, addr, ptep); } static inline int huge_pte_none(pte_t pte) diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index 4ac453114d7e..3e0ccbffff6b 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -21,6 +21,8 @@ #include #include +int sysctl_ldt16 = 0; + #ifdef CONFIG_SMP static void flush_ldt(void *current_mm) { @@ -235,7 +237,7 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode) * IRET leaking the high bits of the kernel stack address. */ #ifdef CONFIG_X86_64 - if (!ldt_info.seg_32bit) { + if (!ldt_info.seg_32bit && !sysctl_ldt16) { error = -EINVAL; goto out_unlock; } diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c index 468d591dde31..51bdc0546733 100644 --- a/arch/x86/vdso/vdso32-setup.c +++ b/arch/x86/vdso/vdso32-setup.c @@ -41,6 +41,7 @@ enum { #ifdef CONFIG_X86_64 #define vdso_enabled sysctl_vsyscall32 #define arch_setup_additional_pages syscall32_setup_pages +extern int sysctl_ldt16; #endif /* @@ -388,6 +389,13 @@ static ctl_table abi_table2[] = { .mode = 0644, .proc_handler = proc_dointvec }, + { + .procname = "ldt16", + .data = &sysctl_ldt16, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec + }, {} }; diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 8176b82b2e4c..392306472e5e 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -70,6 +70,8 @@ enum ec_command { #define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */ #define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */ #define ACPI_EC_MSI_UDELAY 550 /* Wait 550us for MSI EC */ +#define ACPI_EC_CLEAR_MAX 100 /* Maximum number of events to query + * when trying to clear the EC */ enum { EC_FLAGS_QUERY_PENDING, /* Query is pending */ @@ -123,6 +125,7 @@ EXPORT_SYMBOL(first_ec); static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */ static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */ static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */ +static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */ /* -------------------------------------------------------------------------- Transaction Management @@ -203,13 +206,13 @@ unlock: spin_unlock_irqrestore(&ec->curr_lock, flags); } -static int acpi_ec_sync_query(struct acpi_ec *ec); +static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data); static int ec_check_sci_sync(struct acpi_ec *ec, u8 state) { if (state & ACPI_EC_FLAG_SCI) { if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) - return acpi_ec_sync_query(ec); + return acpi_ec_sync_query(ec, NULL); } return 0; } @@ -449,6 +452,27 @@ int ec_transaction(u8 command, EXPORT_SYMBOL(ec_transaction); +/* + * Process _Q events that might have accumulated in the EC. + * Run with locked ec mutex. + */ +static void acpi_ec_clear(struct acpi_ec *ec) +{ + int i, status; + u8 value = 0; + + for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) { + status = acpi_ec_sync_query(ec, &value); + if (status || !value) + break; + } + + if (unlikely(i == ACPI_EC_CLEAR_MAX)) + pr_warn("Warning: Maximum of %d stale EC events cleared\n", i); + else + pr_info("%d stale EC events cleared\n", i); +} + void acpi_ec_block_transactions(void) { struct acpi_ec *ec = first_ec; @@ -472,6 +496,10 @@ void acpi_ec_unblock_transactions(void) mutex_lock(&ec->lock); /* Allow transactions to be carried out again */ clear_bit(EC_FLAGS_BLOCKED, &ec->flags); + + if (EC_FLAGS_CLEAR_ON_RESUME) + acpi_ec_clear(ec); + mutex_unlock(&ec->lock); } @@ -561,13 +589,18 @@ static void acpi_ec_run(void *cxt) kfree(handler); } -static int acpi_ec_sync_query(struct acpi_ec *ec) +static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data) { u8 value = 0; int status; struct acpi_ec_query_handler *handler, *copy; - if ((status = acpi_ec_query_unlocked(ec, &value))) + + status = acpi_ec_query_unlocked(ec, &value); + if (data) + *data = value; + if (status) return status; + list_for_each_entry(handler, &ec->list, node) { if (value == handler->query_bit) { /* have custom handler for this bit */ @@ -590,7 +623,7 @@ static void acpi_ec_gpe_query(void *ec_cxt) if (!ec) return; mutex_lock(&ec->lock); - acpi_ec_sync_query(ec); + acpi_ec_sync_query(ec, NULL); mutex_unlock(&ec->lock); } @@ -828,6 +861,13 @@ static int acpi_ec_add(struct acpi_device *device) /* EC is fully operational, allow queries */ clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); + + /* Clear stale _Q events if hardware might require that */ + if (EC_FLAGS_CLEAR_ON_RESUME) { + mutex_lock(&ec->lock); + acpi_ec_clear(ec); + mutex_unlock(&ec->lock); + } return ret; } @@ -929,6 +969,30 @@ static int ec_enlarge_storm_threshold(const struct dmi_system_id *id) return 0; } +/* + * On some hardware it is necessary to clear events accumulated by the EC during + * sleep. These ECs stop reporting GPEs until they are manually polled, if too + * many events are accumulated. (e.g. Samsung Series 5/9 notebooks) + * + * https://bugzilla.kernel.org/show_bug.cgi?id=44161 + * + * Ideally, the EC should also be instructed NOT to accumulate events during + * sleep (which Windows seems to do somehow), but the interface to control this + * behaviour is not known at this time. + * + * Models known to be affected are Samsung 530Uxx/535Uxx/540Uxx/550Pxx/900Xxx, + * however it is very likely that other Samsung models are affected. + * + * On systems which don't accumulate _Q events during sleep, this extra check + * should be harmless. + */ +static int ec_clear_on_resume(const struct dmi_system_id *id) +{ + pr_debug("Detected system needing EC poll on resume.\n"); + EC_FLAGS_CLEAR_ON_RESUME = 1; + return 0; +} + static struct dmi_system_id __initdata ec_dmi_table[] = { { ec_skip_dsdt_scan, "Compal JFL92", { @@ -968,6 +1032,9 @@ static struct dmi_system_id __initdata ec_dmi_table[] = { ec_validate_ecdt, "ASUS hardware", { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "L4R"),}, NULL}, + { + ec_clear_on_resume, "Samsung hardware", { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD.")}, NULL}, {}, }; diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c index f8f41e0e8a8c..89b30f32ba68 100644 --- a/drivers/atm/ambassador.c +++ b/drivers/atm/ambassador.c @@ -802,7 +802,7 @@ static void fill_rx_pool (amb_dev * dev, unsigned char pool, } // cast needed as there is no %? for pointer differences PRINTD (DBG_SKB, "allocated skb at %p, head %p, area %li", - skb, skb->head, (long) (skb_end_pointer(skb) - skb->head)); + skb, skb->head, (long) skb_end_offset(skb)); rx.handle = virt_to_bus (skb); rx.host_address = cpu_to_be32 (virt_to_bus (skb->data)); if (rx_give (dev, &rx, pool)) diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index b0e75ce3c8fc..81845fa2a9cd 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -1258,7 +1258,7 @@ idt77252_rx_raw(struct idt77252_dev *card) tail = readl(SAR_REG_RAWCT); pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(queue), - skb_end_pointer(queue) - queue->head - 16, + skb_end_offset(queue) - 16, PCI_DMA_FROMDEVICE); while (head != tail) { diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 3539f9b1e002..6fe003a2fca8 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -81,6 +81,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x04CA, 0x3004) }, { USB_DEVICE(0x04CA, 0x3005) }, { USB_DEVICE(0x04CA, 0x3006) }, + { USB_DEVICE(0x04CA, 0x3007) }, { USB_DEVICE(0x04CA, 0x3008) }, { USB_DEVICE(0x13d3, 0x3362) }, { USB_DEVICE(0x0CF3, 0xE004) }, @@ -123,6 +124,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index f18b5a28f10c..dddcb1dc6065 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -152,6 +152,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/crypto/caam/error.c b/drivers/crypto/caam/error.c index 7e2d54bffad6..9b8d231b1da6 100644 --- a/drivers/crypto/caam/error.c +++ b/drivers/crypto/caam/error.c @@ -16,9 +16,13 @@ char *tmp; \ \ tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC); \ - sprintf(tmp, format, param); \ - strcat(str, tmp); \ - kfree(tmp); \ + if (likely(tmp)) { \ + sprintf(tmp, format, param); \ + strcat(str, tmp); \ + kfree(tmp); \ + } else { \ + strcat(str, "kmalloc failure in SPRINTFCAT"); \ + } \ } static void report_jump_idx(u32 status, char *outstr) diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 9a353c2216d0..9b01145e6723 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -218,12 +218,10 @@ static void mv_set_mode(struct mv_xor_chan *chan, static void mv_chan_activate(struct mv_xor_chan *chan) { - u32 activation; - dev_dbg(chan->device->common.dev, " activate chan.\n"); - activation = __raw_readl(XOR_ACTIVATION(chan)); - activation |= 0x1; - __raw_writel(activation, XOR_ACTIVATION(chan)); + + /* writel ensures all descriptors are flushed before activation */ + writel(BIT(0), XOR_ACTIVATION(chan)); } static char mv_chan_is_busy(struct mv_xor_chan *chan) diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index 3df56c7c692f..5ee8cca9ee6c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -332,9 +332,6 @@ bool nouveau_acpi_rom_supported(struct pci_dev *pdev) acpi_status status; acpi_handle dhandle, rom_handle; - if (!nouveau_dsm_priv.dsm_detected && !nouveau_dsm_priv.optimus_detected) - return false; - dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); if (!dhandle) return false; diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c index d306cc8fdeaa..ccf324b451c4 100644 --- a/drivers/gpu/drm/radeon/radeon_bios.c +++ b/drivers/gpu/drm/radeon/radeon_bios.c @@ -173,6 +173,20 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev) } } + if (!found) { + while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { + dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); + if (!dhandle) + continue; + + status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); + if (!ACPI_FAILURE(status)) { + found = true; + break; + } + } + } + if (!found) return false; diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index f3ae60759c5f..3e35bbe96e3a 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -513,22 +513,30 @@ int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo) rbo = container_of(bo, struct radeon_bo, tbo); radeon_bo_check_tiling(rbo, 0, 0); rdev = rbo->rdev; - if (bo->mem.mem_type == TTM_PL_VRAM) { - size = bo->mem.num_pages << PAGE_SHIFT; - offset = bo->mem.start << PAGE_SHIFT; - if ((offset + size) > rdev->mc.visible_vram_size) { - /* hurrah the memory is not visible ! */ - radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM); - rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT; - r = ttm_bo_validate(bo, &rbo->placement, false, true, false); - if (unlikely(r != 0)) - return r; - offset = bo->mem.start << PAGE_SHIFT; - /* this should not happen */ - if ((offset + size) > rdev->mc.visible_vram_size) - return -EINVAL; - } + if (bo->mem.mem_type != TTM_PL_VRAM) + return 0; + + size = bo->mem.num_pages << PAGE_SHIFT; + offset = bo->mem.start << PAGE_SHIFT; + if ((offset + size) <= rdev->mc.visible_vram_size) + return 0; + + /* hurrah the memory is not visible ! */ + radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM); + rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT; + r = ttm_bo_validate(bo, &rbo->placement, false, true, false); + if (unlikely(r == -ENOMEM)) { + radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT); + return ttm_bo_validate(bo, &rbo->placement, false, true, false); + } else if (unlikely(r != 0)) { + return r; } + + offset = bo->mem.start << PAGE_SHIFT; + /* this should never happen */ + if ((offset + size) > rdev->mc.visible_vram_size) + return -EINVAL; + return 0; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 40932fbdac0f..84ba033dd68a 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -558,14 +558,36 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv, } *cmd; int ret; struct vmw_resource *res; + SVGA3dCmdSurfaceDMASuffix *suffix; + uint32_t bo_size; cmd = container_of(header, struct vmw_dma_cmd, header); + suffix = (SVGA3dCmdSurfaceDMASuffix *)((unsigned long) &cmd->dma + + header->size - sizeof(*suffix)); + + /* Make sure device and verifier stays in sync. */ + if (unlikely(suffix->suffixSize != sizeof(*suffix))) { + DRM_ERROR("Invalid DMA suffix size.\n"); + return -EINVAL; + } + ret = vmw_translate_guest_ptr(dev_priv, sw_context, &cmd->dma.guest.ptr, &vmw_bo); if (unlikely(ret != 0)) return ret; + /* Make sure DMA doesn't cross BO boundaries. */ + bo_size = vmw_bo->base.num_pages * PAGE_SIZE; + if (unlikely(cmd->dma.guest.ptr.offset > bo_size)) { + DRM_ERROR("Invalid DMA offset.\n"); + return -EINVAL; + } + + bo_size -= cmd->dma.guest.ptr.offset; + if (unlikely(suffix->maximumOffset > bo_size)) + suffix->maximumOffset = bo_size; + bo = &vmw_bo->base; ret = vmw_user_surface_lookup_handle(dev_priv, sw_context->tfile, cmd->dma.host.sid, &srf); diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index ca2b3e6c4e9f..ccc89b0e14d9 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -678,6 +678,13 @@ #define USB_DEVICE_ID_SYMBOL_SCANNER_1 0x0800 #define USB_DEVICE_ID_SYMBOL_SCANNER_2 0x1300 +#define USB_VENDOR_ID_SYNAPTICS 0x06cb +#define USB_DEVICE_ID_SYNAPTICS_LTS1 0x0af8 +#define USB_DEVICE_ID_SYNAPTICS_LTS2 0x1d10 +#define USB_DEVICE_ID_SYNAPTICS_HD 0x0ac3 +#define USB_DEVICE_ID_SYNAPTICS_QUAD_HD 0x1ac3 +#define USB_DEVICE_ID_SYNAPTICS_TP_V103 0x5710 + #define USB_VENDOR_ID_THRUSTMASTER 0x044f #define USB_VENDOR_ID_TOPSEED 0x0766 diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index f98fbad966e7..71c258295045 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -100,6 +100,11 @@ static const struct hid_blacklist { { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS }, { 0, 0 } }; diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c index cd2a6e437aec..7da08accab8b 100644 --- a/drivers/hwmon/emc1403.c +++ b/drivers/hwmon/emc1403.c @@ -159,7 +159,7 @@ static ssize_t store_hyst(struct device *dev, if (retval < 0) goto fail; - hyst = val - retval * 1000; + hyst = retval * 1000 - val; hyst = DIV_ROUND_CLOSEST(hyst, 1000); if (hyst < 0 || hyst > 255) { retval = -ERANGE; @@ -290,7 +290,7 @@ static int emc1403_detect(struct i2c_client *client, } id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG); - if (id != 0x01) + if (id < 0x01 || id > 0x04) return -ENODEV; return 0; diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 3c2812f13d96..aadb3984f0d3 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -346,6 +346,9 @@ static void i2c_dw_xfer_init(struct dw_i2c_dev *dev) ic_con &= ~DW_IC_CON_10BITADDR_MASTER; dw_writel(dev, ic_con, DW_IC_CON); + /* enforce disabled interrupts (due to HW issues) */ + i2c_dw_disable_int(dev); + /* Enable the adapter */ dw_writel(dev, 1, DW_IC_ENABLE); diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 4c1718081685..7d6d2b76b92e 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1082,10 +1082,10 @@ static int s3c24xx_i2c_resume(struct device *dev) struct platform_device *pdev = to_platform_device(dev); struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); - i2c->suspended = 0; clk_enable(i2c->clk); s3c24xx_i2c_init(i2c); clk_disable(i2c->clk); + i2c->suspended = 0; return 0; } diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index e2a9867c19d5..342a059184a3 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -11,6 +11,7 @@ */ #include +#include #include #include #include @@ -783,7 +784,11 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse) break; case 3: - etd->reg_10 = 0x0b; + if (etd->set_hw_resolution) + etd->reg_10 = 0x0b; + else + etd->reg_10 = 0x03; + if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) rc = -1; @@ -1206,6 +1211,22 @@ static int elantech_reconnect(struct psmouse *psmouse) } /* + * Some hw_version 3 models go into error state when we try to set bit 3 of r10 + */ +static const struct dmi_system_id no_hw_res_dmi_table[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Gigabyte U2442 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "U2442"), + }, + }, +#endif + { } +}; + +/* * determine hardware version and set some properties according to it. */ static int elantech_set_properties(struct elantech_data *etd) @@ -1254,6 +1275,9 @@ static int elantech_set_properties(struct elantech_data *etd) etd->reports_pressure = true; } + /* Enable real hardware resolution on hw_version 3 ? */ + etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); + return 0; } diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 9e5f1aabea7e..3569bed80a28 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -128,6 +128,7 @@ struct elantech_data { bool paritycheck; bool jumpy_cursor; bool reports_pressure; + bool set_hw_resolution; unsigned char hw_version; unsigned int fw_version; unsigned int single_finger_reports; diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 886c1914146b..8a398076d1e5 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1394,6 +1394,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = { .driver_data = (int []){1232, 5710, 1156, 4696}, }, { + /* Lenovo ThinkPad Edge E431 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Edge E431"), + }, + .driver_data = (int []){1024, 5022, 2508, 4832}, + }, + { /* Lenovo ThinkPad T431s */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), diff --git a/drivers/md/md.c b/drivers/md/md.c index 2d0544c92737..db4b4a82843a 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8122,7 +8122,8 @@ static int md_notify_reboot(struct notifier_block *this, if (mddev_trylock(mddev)) { if (mddev->pers) __md_stop_writes(mddev); - mddev->safemode = 2; + if (mddev->persistent) + mddev->safemode = 2; mddev_unlock(mddev); } need_delay = 1; diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 6edc9ba81203..298703fca3b5 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -90,6 +90,7 @@ static long media_device_enum_entities(struct media_device *mdev, struct media_entity *ent; struct media_entity_desc u_ent; + memset(&u_ent, 0, sizeof(u_ent)); if (copy_from_user(&u_ent.id, &uent->id, sizeof(u_ent.id))) return -EFAULT; diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c index 8aa058531280..17125d96297b 100644 --- a/drivers/media/video/ov7670.c +++ b/drivers/media/video/ov7670.c @@ -937,7 +937,7 @@ static int ov7670_enum_framesizes(struct v4l2_subdev *sd, * windows that fall outside that. */ for (i = 0; i < N_WIN_SIZES; i++) { - struct ov7670_win_size *win = &ov7670_win_sizes[index]; + struct ov7670_win_size *win = &ov7670_win_sizes[i]; if (info->min_width && win->width < info->min_width) continue; if (info->min_height && win->height < info->min_height) diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c index c68531b88279..2671959f01bb 100644 --- a/drivers/media/video/v4l2-compat-ioctl32.c +++ b/drivers/media/video/v4l2-compat-ioctl32.c @@ -178,6 +178,9 @@ struct v4l2_create_buffers32 { static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { + if (get_user(kp->type, &up->type)) + return -EFAULT; + switch (kp->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: @@ -208,17 +211,16 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) || - get_user(kp->type, &up->type)) - return -EFAULT; + if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32))) + return -EFAULT; return __get_v4l2_format32(kp, up); } static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) { if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) || - copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format.fmt))) - return -EFAULT; + copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format))) + return -EFAULT; return __get_v4l2_format32(&kp->format, &up->format); } diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 1bf36ac44a10..5af2a8f29bc0 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4914,6 +4914,7 @@ static int __init bonding_init(void) out: return res; err: + bond_destroy_debugfs(); rtnl_link_unregister(&bond_link_ops); err_link: unregister_pernet_subsys(&bond_net_ops); diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c index 2c7f5036f570..5192f8615258 100644 --- a/drivers/net/can/sja1000/peak_pci.c +++ b/drivers/net/can/sja1000/peak_pci.c @@ -39,9 +39,9 @@ MODULE_LICENSE("GPL v2"); #define DRV_NAME "peak_pci" struct peak_pci_chan { - void __iomem *cfg_base; /* Common for all channels */ - struct net_device *next_dev; /* Chain of network devices */ - u16 icr_mask; /* Interrupt mask for fast ack */ + void __iomem *cfg_base; /* Common for all channels */ + struct net_device *prev_dev; /* Chain of network devices */ + u16 icr_mask; /* Interrupt mask for fast ack */ }; #define PEAK_PCI_CAN_CLOCK (16000000 / 2) @@ -98,7 +98,7 @@ static int __devinit peak_pci_probe(struct pci_dev *pdev, { struct sja1000_priv *priv; struct peak_pci_chan *chan; - struct net_device *dev, *dev0 = NULL; + struct net_device *dev, *prev_dev; void __iomem *cfg_base, *reg_base; u16 sub_sys_id, icr; int i, err, channels; @@ -196,18 +196,14 @@ static int __devinit peak_pci_probe(struct pci_dev *pdev, } /* Create chain of SJA1000 devices */ - if (i == 0) - dev0 = dev; - else - chan->next_dev = dev; + chan->prev_dev = pci_get_drvdata(pdev); + pci_set_drvdata(pdev, dev); dev_info(&pdev->dev, "%s at reg_base=0x%p cfg_base=0x%p irq=%d\n", dev->name, priv->reg_base, chan->cfg_base, dev->irq); } - pci_set_drvdata(pdev, dev0); - /* Enable interrupts */ writew(icr, cfg_base + PITA_ICR + 2); @@ -217,12 +213,13 @@ failure_remove_channels: /* Disable interrupts */ writew(0x0, cfg_base + PITA_ICR + 2); - for (dev = dev0; dev; dev = chan->next_dev) { - unregister_sja1000dev(dev); - free_sja1000dev(dev); + for (dev = pci_get_drvdata(pdev); dev; dev = prev_dev) { priv = netdev_priv(dev); chan = priv->priv; - dev = chan->next_dev; + prev_dev = chan->prev_dev; + + unregister_sja1000dev(dev); + free_sja1000dev(dev); } pci_iounmap(pdev, reg_base); @@ -241,7 +238,7 @@ failure_disable_pci: static void __devexit peak_pci_remove(struct pci_dev *pdev) { - struct net_device *dev = pci_get_drvdata(pdev); /* First device */ + struct net_device *dev = pci_get_drvdata(pdev); /* Last device */ struct sja1000_priv *priv = netdev_priv(dev); struct peak_pci_chan *chan = priv->priv; void __iomem *cfg_base = chan->cfg_base; @@ -252,10 +249,12 @@ static void __devexit peak_pci_remove(struct pci_dev *pdev) /* Loop over all registered devices */ while (1) { + struct net_device *prev_dev = chan->prev_dev; + dev_info(&pdev->dev, "removing device %s\n", dev->name); unregister_sja1000dev(dev); free_sja1000dev(dev); - dev = chan->next_dev; + dev = prev_dev; if (!dev) break; priv = netdev_priv(dev); diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index c77c462bcee5..2615433b279f 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -10656,7 +10656,9 @@ static int tg3_set_ringparam(struct net_device *dev, struct ethtool_ringparam *e if (tg3_flag(tp, MAX_RXPEND_64) && tp->rx_pending > 63) tp->rx_pending = 63; - tp->rx_jumbo_pending = ering->rx_jumbo_pending; + + if (tg3_flag(tp, JUMBO_RING_ENABLE)) + tp->rx_jumbo_pending = ering->rx_jumbo_pending; for (i = 0; i < tp->irq_max; i++) tp->napi[i].tx_pending = ering->tx_pending; diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 301b39ed96ce..b74cdf6a0d7d 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -236,11 +236,9 @@ static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) const struct macvlan_dev *vlan = netdev_priv(dev); const struct macvlan_port *port = vlan->port; const struct macvlan_dev *dest; - __u8 ip_summed = skb->ip_summed; if (vlan->mode == MACVLAN_MODE_BRIDGE) { const struct ethhdr *eth = (void *)skb->data; - skb->ip_summed = CHECKSUM_UNNECESSARY; /* send to other bridge ports directly */ if (is_multicast_ether_addr(eth->h_dest)) { @@ -258,7 +256,6 @@ static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) } xmit_world: - skb->ip_summed = ip_summed; skb->dev = vlan->lowerdev; return dev_queue_xmit(skb); } @@ -394,8 +391,10 @@ static void macvlan_change_rx_flags(struct net_device *dev, int change) struct macvlan_dev *vlan = netdev_priv(dev); struct net_device *lowerdev = vlan->lowerdev; - if (change & IFF_ALLMULTI) - dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); + if (dev->flags & IFF_UP) { + if (change & IFF_ALLMULTI) + dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); + } } static void macvlan_set_multicast_list(struct net_device *dev) diff --git a/drivers/net/wimax/i2400m/usb-rx.c b/drivers/net/wimax/i2400m/usb-rx.c index e3257681e360..b78ee676e102 100644 --- a/drivers/net/wimax/i2400m/usb-rx.c +++ b/drivers/net/wimax/i2400m/usb-rx.c @@ -277,7 +277,7 @@ retry: d_printf(1, dev, "RX: size changed to %d, received %d, " "copied %d, capacity %ld\n", rx_size, read_size, rx_skb->len, - (long) (skb_end_pointer(new_skb) - new_skb->head)); + (long) skb_end_offset(new_skb)); goto retry; } /* In most cases, it happens due to the hardware scheduling a diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index 5c38281955d4..1d4c579178f3 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -651,20 +651,18 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, bss_conf->bssid); /* - * Update the beacon. This is only required on USB devices. PCI - * devices fetch beacons periodically. - */ - if (changes & BSS_CHANGED_BEACON && rt2x00_is_usb(rt2x00dev)) - rt2x00queue_update_beacon(rt2x00dev, vif); - - /* * Start/stop beaconing. */ if (changes & BSS_CHANGED_BEACON_ENABLED) { if (!bss_conf->enable_beacon && intf->enable_beacon) { - rt2x00queue_clear_beacon(rt2x00dev, vif); rt2x00dev->intf_beaconing--; intf->enable_beacon = false; + /* + * Clear beacon in the H/W for this vif. This is needed + * to disable beaconing on this particular interface + * and keep it running on other interfaces. + */ + rt2x00queue_clear_beacon(rt2x00dev, vif); if (rt2x00dev->intf_beaconing == 0) { /* @@ -675,11 +673,15 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, rt2x00queue_stop_queue(rt2x00dev->bcn); mutex_unlock(&intf->beacon_skb_mutex); } - - } else if (bss_conf->enable_beacon && !intf->enable_beacon) { rt2x00dev->intf_beaconing++; intf->enable_beacon = true; + /* + * Upload beacon to the H/W. This is only required on + * USB devices. PCI devices fetch beacons periodically. + */ + if (rt2x00_is_usb(rt2x00dev)) + rt2x00queue_update_beacon(rt2x00dev, vif); if (rt2x00dev->intf_beaconing == 1) { /* diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c index d3920daa3c32..79fc4b770500 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c @@ -1158,12 +1158,23 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw) struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); int err = 0; static bool iqk_initialized; + unsigned long flags; + + /* As this function can take a very long time (up to 350 ms) + * and can be called with irqs disabled, reenable the irqs + * to let the other devices continue being serviced. + * + * It is safe doing so since our own interrupts will only be enabled + * in a subsequent step. + */ + local_save_flags(flags); + local_irq_enable(); rtlhal->hw_type = HARDWARE_TYPE_RTL8192CU; err = _rtl92cu_init_mac(hw); if (err) { RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("init mac failed!\n")); - return err; + goto exit; } err = rtl92c_download_fw(hw); if (err) { @@ -1171,7 +1182,7 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw) ("Failed to download FW. Init HW without FW now..\n")); err = 1; rtlhal->fw_ready = false; - return err; + goto exit; } else { rtlhal->fw_ready = true; } @@ -1212,6 +1223,8 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw) _update_mac_setting(hw); rtl92c_dm_init(hw); _dump_registers(hw); +exit: + local_irq_restore(flags); return err; } diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c index 3ffc1b2b3932..b888675a228a 100644 --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -285,8 +285,8 @@ static int board_added(struct slot *p_slot) return WRONG_BUS_FREQUENCY; } - bsp = ctrl->pci_dev->bus->cur_bus_speed; - msp = ctrl->pci_dev->bus->max_bus_speed; + bsp = ctrl->pci_dev->subordinate->cur_bus_speed; + msp = ctrl->pci_dev->subordinate->max_bus_speed; /* Check if there are other slots or devices on the same bus */ if (!list_empty(&ctrl->pci_dev->subordinate->devices)) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 8e6c4fafb3eb..2a8d6aa441c3 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -3405,7 +3405,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) /* Do not issue duplicate brightness change events to * userspace. tpacpi_detect_brightness_capabilities() must have * been called before this point */ - if (tp_features.bright_acpimode && acpi_video_backlight_support()) { + if (acpi_video_backlight_support()) { pr_info("This ThinkPad has standard ACPI backlight " "brightness control, supported by the ACPI " "video driver\n"); diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 987c6d6adb76..01780a963181 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -8166,7 +8166,6 @@ _scsih_suspend(struct pci_dev *pdev, pm_message_t state) mpt2sas_base_free_resources(ioc); pci_save_state(pdev); - pci_disable_device(pdev); pci_set_power_state(pdev, device_state); return 0; } diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c index 2542c3743904..c5da0d24b4aa 100644 --- a/drivers/staging/octeon/ethernet-tx.c +++ b/drivers/staging/octeon/ethernet-tx.c @@ -344,7 +344,7 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) } if (unlikely (skb->truesize != - sizeof(*skb) + skb_end_pointer(skb) - skb->head)) { + sizeof(*skb) + skb_end_offset(skb))) { /* printk("TX buffer truesize has been changed\n"); */ diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 7b97e7e3ede4..443547bf5407 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -190,7 +190,7 @@ static struct tty_driver *hvc_console_device(struct console *c, int *index) return hvc_driver; } -static int __init hvc_console_setup(struct console *co, char *options) +static int hvc_console_setup(struct console *co, char *options) { if (co->index < 0 || co->index >= MAX_NR_HVC_CONSOLES) return -ENODEV; diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c index 0b00091d2ae9..ff8aeeebe5fa 100644 --- a/drivers/usb/storage/shuttle_usbat.c +++ b/drivers/usb/storage/shuttle_usbat.c @@ -1846,7 +1846,7 @@ static int usbat_probe(struct usb_interface *intf, us->transport_name = "Shuttle USBAT"; us->transport = usbat_flash_transport; us->transport_reset = usb_stor_CB_reset; - us->max_lun = 1; + us->max_lun = 0; result = usb_stor_probe2(us); return result; diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 08711bc24124..49d222d965da 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -226,6 +226,20 @@ UNUSUAL_DEV( 0x0421, 0x0495, 0x0370, 0x0370, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_MAX_SECTORS_64 ), +/* Reported by Daniele Forsi */ +UNUSUAL_DEV( 0x0421, 0x04b9, 0x0350, 0x0350, + "Nokia", + "5300", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64 ), + +/* Patch submitted by Victor A. Santos */ +UNUSUAL_DEV( 0x0421, 0x05af, 0x0742, 0x0742, + "Nokia", + "305", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64), + /* Patch submitted by Mikhail Zolotaryov */ UNUSUAL_DEV( 0x0421, 0x06aa, 0x1110, 0x1110, "Nokia", diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c index ac2cf6dcc598..3b15bcac3766 100644 --- a/drivers/video/tgafb.c +++ b/drivers/video/tgafb.c @@ -192,6 +192,8 @@ tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) if (var->xres_virtual != var->xres || var->yres_virtual != var->yres) return -EINVAL; + if (var->xres * var->yres * (var->bits_per_pixel >> 3) > info->fix.smem_len) + return -EINVAL; if (var->nonstd) return -EINVAL; if (1000000000 / var->pixclock > TGA_PLL_MAX_FREQ) @@ -272,6 +274,7 @@ tgafb_set_par(struct fb_info *info) par->yres = info->var.yres; par->pll_freq = pll_freq = 1000000000 / info->var.pixclock; par->bits_per_pixel = info->var.bits_per_pixel; + info->fix.line_length = par->xres * (par->bits_per_pixel >> 3); tga_type = par->tga_type; @@ -1318,6 +1321,7 @@ tgafb_init_fix(struct fb_info *info) int tga_bus_tc = TGA_BUS_TC(par->dev); u8 tga_type = par->tga_type; const char *tga_type_name = NULL; + unsigned memory_size; switch (tga_type) { case TGA_TYPE_8PLANE: @@ -1325,21 +1329,25 @@ tgafb_init_fix(struct fb_info *info) tga_type_name = "Digital ZLXp-E1"; if (tga_bus_tc) tga_type_name = "Digital ZLX-E1"; + memory_size = 2097152; break; case TGA_TYPE_24PLANE: if (tga_bus_pci) tga_type_name = "Digital ZLXp-E2"; if (tga_bus_tc) tga_type_name = "Digital ZLX-E2"; + memory_size = 8388608; break; case TGA_TYPE_24PLUSZ: if (tga_bus_pci) tga_type_name = "Digital ZLXp-E3"; if (tga_bus_tc) tga_type_name = "Digital ZLX-E3"; + memory_size = 16777216; break; default: tga_type_name = "Unknown"; + memory_size = 16777216; break; } @@ -1351,9 +1359,8 @@ tgafb_init_fix(struct fb_info *info) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR); - info->fix.line_length = par->xres * (par->bits_per_pixel >> 3); info->fix.smem_start = (size_t) par->tga_fb_base; - info->fix.smem_len = info->fix.line_length * par->yres; + info->fix.smem_len = memory_size; info->fix.mmio_start = (size_t) par->tga_regs_base; info->fix.mmio_len = 512; @@ -1478,6 +1485,9 @@ tgafb_register(struct device *dev) modedb_tga = &modedb_tc; modedbsize_tga = 1; } + + tgafb_init_fix(info); + ret = fb_find_mode(&info->var, info, mode_option ? mode_option : mode_option_tga, modedb_tga, modedbsize_tga, NULL, @@ -1495,7 +1505,6 @@ tgafb_register(struct device *dev) } tgafb_set_par(info); - tgafb_init_fix(info); if (register_framebuffer(info) < 0) { printk(KERN_ERR "tgafb: Could not register framebuffer\n"); diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index 9c51aff02ae2..435a9be1265e 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -373,8 +373,10 @@ sort_pacl(struct posix_acl *pacl) * by uid/gid. */ int i, j; - if (pacl->a_count <= 4) - return; /* no users or groups */ + /* no users or groups */ + if (!pacl || pacl->a_count <= 4) + return; + i = 1; while (pacl->a_entries[i].e_tag == ACL_USER) i++; @@ -498,13 +500,12 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags) /* * ACLs with no ACEs are treated differently in the inheritable - * and effective cases: when there are no inheritable ACEs, we - * set a zero-length default posix acl: + * and effective cases: when there are no inheritable ACEs, + * calls ->set_acl with a NULL ACL structure. */ - if (state->empty && (flags & NFS4_ACL_TYPE_DEFAULT)) { - pacl = posix_acl_alloc(0, GFP_KERNEL); - return pacl ? pacl : ERR_PTR(-ENOMEM); - } + if (state->empty && (flags & NFS4_ACL_TYPE_DEFAULT)) + return NULL; + /* * When there are no effective ACEs, the following will end * up setting a 3-element effective posix ACL with all diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 4cef99ff2408..b2e0a5585aed 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -986,6 +986,18 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name) } memcpy(clp->cl_name.data, name.data, name.len); clp->cl_name.len = name.len; + INIT_LIST_HEAD(&clp->cl_sessions); + idr_init(&clp->cl_stateids); + atomic_set(&clp->cl_refcount, 0); + clp->cl_cb_state = NFSD4_CB_UNKNOWN; + INIT_LIST_HEAD(&clp->cl_idhash); + INIT_LIST_HEAD(&clp->cl_strhash); + INIT_LIST_HEAD(&clp->cl_openowners); + INIT_LIST_HEAD(&clp->cl_delegations); + INIT_LIST_HEAD(&clp->cl_lru); + INIT_LIST_HEAD(&clp->cl_callbacks); + spin_lock_init(&clp->cl_lock); + rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table"); return clp; } @@ -999,6 +1011,7 @@ free_client(struct nfs4_client *clp) list_del(&ses->se_perclnt); nfsd4_put_session(ses); } + rpc_destroy_wait_queue(&clp->cl_cb_waitq); if (clp->cl_cred.cr_group_info) put_group_info(clp->cl_cred.cr_group_info); kfree(clp->cl_principal); @@ -1163,7 +1176,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir, if (clp == NULL) return NULL; - INIT_LIST_HEAD(&clp->cl_sessions); princ = svc_gss_principal(rqstp); if (princ) { @@ -1174,21 +1186,10 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir, } } - idr_init(&clp->cl_stateids); memcpy(clp->cl_recdir, recdir, HEXDIR_LEN); - atomic_set(&clp->cl_refcount, 0); - clp->cl_cb_state = NFSD4_CB_UNKNOWN; - INIT_LIST_HEAD(&clp->cl_idhash); - INIT_LIST_HEAD(&clp->cl_strhash); - INIT_LIST_HEAD(&clp->cl_openowners); - INIT_LIST_HEAD(&clp->cl_delegations); - INIT_LIST_HEAD(&clp->cl_lru); - INIT_LIST_HEAD(&clp->cl_callbacks); - spin_lock_init(&clp->cl_lock); INIT_WORK(&clp->cl_cb_null.cb_work, nfsd4_do_callback_rpc); clp->cl_time = get_seconds(); clear_bit(0, &clp->cl_cb_slot_busy); - rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table"); copy_verf(clp, verf); rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa); clp->cl_flavor = rqstp->rq_flavor; @@ -3375,9 +3376,16 @@ out: static __be32 nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp) { - if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner))) + struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); + + if (check_for_locks(stp->st_file, lo)) return nfserr_locks_held; - release_lock_stateid(stp); + /* + * Currently there's a 1-1 lock stateid<->lockowner + * correspondance, and we have to delete the lockowner when we + * delete the lock stateid: + */ + unhash_lockowner(lo); return nfs_ok; } @@ -3812,6 +3820,10 @@ static bool same_lockowner_ino(struct nfs4_lockowner *lo, struct inode *inode, c if (!same_owner_str(&lo->lo_owner, owner, clid)) return false; + if (list_empty(&lo->lo_owner.so_stateids)) { + WARN_ON_ONCE(1); + return false; + } lst = list_first_entry(&lo->lo_owner.so_stateids, struct nfs4_ol_stateid, st_perstateowner); return lst->st_file->fi_inode == inode; diff --git a/fs/posix_acl.c b/fs/posix_acl.c index cea4623f1ed6..6c70ab22a3e3 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -155,6 +155,12 @@ posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p) umode_t mode = 0; int not_equiv = 0; + /* + * A null ACL can always be presented as mode bits. + */ + if (!acl) + return 0; + FOREACH_ACL_ENTRY(pa, acl, pe) { switch (pa->e_tag) { case ACL_USER_OBJ: diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 26eafcef75be..a3ebb09d4283 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -260,6 +260,7 @@ extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr); extern int ftrace_arch_read_dyn_info(char *buf, int size); extern int skip_trace(unsigned long ip); +extern void ftrace_module_init(struct module *mod); extern void ftrace_disable_daemon(void); extern void ftrace_enable_daemon(void); @@ -272,6 +273,7 @@ static inline void ftrace_set_filter(unsigned char *buf, int len, int reset) static inline void ftrace_disable_daemon(void) { } static inline void ftrace_enable_daemon(void) { } static inline void ftrace_release_mod(struct module *mod) {} +static inline void ftrace_module_init(struct module *mod) {} static inline int register_ftrace_command(struct ftrace_func_command *cmd) { return -EINVAL; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e6796c19dc62..f93d8c11e085 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -95,7 +95,6 @@ struct kvm_async_pf { unsigned long addr; struct kvm_arch_async_pf arch; struct page *page; - bool done; }; void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 13bd6d0e43c5..c445e5221d49 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -617,11 +617,21 @@ static inline unsigned char *skb_end_pointer(const struct sk_buff *skb) { return skb->head + skb->end; } + +static inline unsigned int skb_end_offset(const struct sk_buff *skb) +{ + return skb->end; +} #else static inline unsigned char *skb_end_pointer(const struct sk_buff *skb) { return skb->end; } + +static inline unsigned int skb_end_offset(const struct sk_buff *skb) +{ + return skb->end - skb->head; +} #endif /* Internal */ @@ -2549,7 +2559,7 @@ static inline bool skb_is_recycleable(const struct sk_buff *skb, int skb_size) return false; skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD); - if (skb_end_pointer(skb) - skb->head < skb_size) + if (skb_end_offset(skb) < skb_size) return false; if (skb_shared(skb) || skb_cloned(skb)) diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index 5e91b72fc718..4913dacd1333 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -34,6 +34,11 @@ struct route_info { #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 +/* We do not (yet ?) support IPv6 jumbograms (RFC 2675) + * Unlike IPv4, hdr->seg_len doesn't include the IPv6 header + */ +#define IP6_MAX_MTU (0xFFFF + sizeof(struct ipv6hdr)) + /* * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate * between IPV6_ADDR_PREFERENCES socket option values diff --git a/include/trace/events/module.h b/include/trace/events/module.h index 161932737416..ca298c7157ae 100644 --- a/include/trace/events/module.h +++ b/include/trace/events/module.h @@ -78,7 +78,7 @@ DECLARE_EVENT_CLASS(module_refcnt, TP_fast_assign( __entry->ip = ip; - __entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs); + __entry->refcnt = __this_cpu_read(mod->refptr->incs) - __this_cpu_read(mod->refptr->decs); __assign_str(name, mod->name); ), diff --git a/kernel/events/core.c b/kernel/events/core.c index b15b4f75131d..1d1edcb2d9a2 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4899,6 +4899,9 @@ struct swevent_htable { /* Recursion avoidance in each contexts */ int recursion[PERF_NR_CONTEXTS]; + + /* Keeps track of cpu being initialized/exited */ + bool online; }; static DEFINE_PER_CPU(struct swevent_htable, swevent_htable); @@ -5141,8 +5144,14 @@ static int perf_swevent_add(struct perf_event *event, int flags) hwc->state = !(flags & PERF_EF_START); head = find_swevent_head(swhash, event); - if (WARN_ON_ONCE(!head)) + if (!head) { + /* + * We can race with cpu hotplug code. Do not + * WARN if the cpu just got unplugged. + */ + WARN_ON_ONCE(swhash->online); return -EINVAL; + } hlist_add_head_rcu(&event->hlist_entry, head); @@ -6301,6 +6310,9 @@ SYSCALL_DEFINE5(perf_event_open, if (attr.freq) { if (attr.sample_freq > sysctl_perf_event_sample_rate) return -EINVAL; + } else { + if (attr.sample_period & (1ULL << 63)) + return -EINVAL; } /* @@ -7078,6 +7090,7 @@ static void __cpuinit perf_event_init_cpu(int cpu) struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu); mutex_lock(&swhash->hlist_mutex); + swhash->online = true; if (swhash->hlist_refcount > 0) { struct swevent_hlist *hlist; @@ -7135,6 +7148,7 @@ static void perf_event_exit_cpu(int cpu) perf_event_exit_cpu_context(cpu); mutex_lock(&swhash->hlist_mutex); + swhash->online = false; swevent_hlist_release(swhash); mutex_unlock(&swhash->hlist_mutex); } diff --git a/kernel/futex.c b/kernel/futex.c index 8888815c578b..1bb37d0f3d7a 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -588,6 +588,55 @@ void exit_pi_state_list(struct task_struct *curr) raw_spin_unlock_irq(&curr->pi_lock); } +/* + * We need to check the following states: + * + * Waiter | pi_state | pi->owner | uTID | uODIED | ? + * + * [1] NULL | --- | --- | 0 | 0/1 | Valid + * [2] NULL | --- | --- | >0 | 0/1 | Valid + * + * [3] Found | NULL | -- | Any | 0/1 | Invalid + * + * [4] Found | Found | NULL | 0 | 1 | Valid + * [5] Found | Found | NULL | >0 | 1 | Invalid + * + * [6] Found | Found | task | 0 | 1 | Valid + * + * [7] Found | Found | NULL | Any | 0 | Invalid + * + * [8] Found | Found | task | ==taskTID | 0/1 | Valid + * [9] Found | Found | task | 0 | 0 | Invalid + * [10] Found | Found | task | !=taskTID | 0/1 | Invalid + * + * [1] Indicates that the kernel can acquire the futex atomically. We + * came came here due to a stale FUTEX_WAITERS/FUTEX_OWNER_DIED bit. + * + * [2] Valid, if TID does not belong to a kernel thread. If no matching + * thread is found then it indicates that the owner TID has died. + * + * [3] Invalid. The waiter is queued on a non PI futex + * + * [4] Valid state after exit_robust_list(), which sets the user space + * value to FUTEX_WAITERS | FUTEX_OWNER_DIED. + * + * [5] The user space value got manipulated between exit_robust_list() + * and exit_pi_state_list() + * + * [6] Valid state after exit_pi_state_list() which sets the new owner in + * the pi_state but cannot access the user space value. + * + * [7] pi_state->owner can only be NULL when the OWNER_DIED bit is set. + * + * [8] Owner and user space value match + * + * [9] There is no transient state which sets the user space TID to 0 + * except exit_robust_list(), but this is indicated by the + * FUTEX_OWNER_DIED bit. See [4] + * + * [10] There is no transient state which leaves owner and user space + * TID out of sync. + */ static int lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, union futex_key *key, struct futex_pi_state **ps) @@ -603,12 +652,13 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, plist_for_each_entry_safe(this, next, head, list) { if (match_futex(&this->key, key)) { /* - * Another waiter already exists - bump up - * the refcount and return its pi_state: + * Sanity check the waiter before increasing + * the refcount and attaching to it. */ pi_state = this->pi_state; /* - * Userspace might have messed up non-PI and PI futexes + * Userspace might have messed up non-PI and + * PI futexes [3] */ if (unlikely(!pi_state)) return -EINVAL; @@ -616,34 +666,70 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, WARN_ON(!atomic_read(&pi_state->refcount)); /* - * When pi_state->owner is NULL then the owner died - * and another waiter is on the fly. pi_state->owner - * is fixed up by the task which acquires - * pi_state->rt_mutex. - * - * We do not check for pid == 0 which can happen when - * the owner died and robust_list_exit() cleared the - * TID. + * Handle the owner died case: */ - if (pid && pi_state->owner) { + if (uval & FUTEX_OWNER_DIED) { + /* + * exit_pi_state_list sets owner to NULL and + * wakes the topmost waiter. The task which + * acquires the pi_state->rt_mutex will fixup + * owner. + */ + if (!pi_state->owner) { + /* + * No pi state owner, but the user + * space TID is not 0. Inconsistent + * state. [5] + */ + if (pid) + return -EINVAL; + /* + * Take a ref on the state and + * return. [4] + */ + goto out_state; + } + /* - * Bail out if user space manipulated the - * futex value. + * If TID is 0, then either the dying owner + * has not yet executed exit_pi_state_list() + * or some waiter acquired the rtmutex in the + * pi state, but did not yet fixup the TID in + * user space. + * + * Take a ref on the state and return. [6] */ - if (pid != task_pid_vnr(pi_state->owner)) + if (!pid) + goto out_state; + } else { + /* + * If the owner died bit is not set, + * then the pi_state must have an + * owner. [7] + */ + if (!pi_state->owner) return -EINVAL; } + /* + * Bail out if user space manipulated the + * futex value. If pi state exists then the + * owner TID must be the same as the user + * space TID. [9/10] + */ + if (pid != task_pid_vnr(pi_state->owner)) + return -EINVAL; + + out_state: atomic_inc(&pi_state->refcount); *ps = pi_state; - return 0; } } /* * We are the first waiter - try to look up the real owner and attach - * the new pi_state to it, but bail out when TID = 0 + * the new pi_state to it, but bail out when TID = 0 [1] */ if (!pid) return -ESRCH; @@ -651,6 +737,11 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, if (!p) return -ESRCH; + if (!p->mm) { + put_task_struct(p); + return -EPERM; + } + /* * We need to look at the task state flags to figure out, * whether the task is exiting. To protect against the do_exit @@ -671,6 +762,9 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, return ret; } + /* + * No existing pi state. First waiter. [2] + */ pi_state = alloc_pi_state(); /* @@ -742,10 +836,18 @@ retry: return -EDEADLK; /* - * Surprise - we got the lock. Just return to userspace: + * Surprise - we got the lock, but we do not trust user space at all. */ - if (unlikely(!curval)) - return 1; + if (unlikely(!curval)) { + /* + * We verify whether there is kernel state for this + * futex. If not, we can safely assume, that the 0 -> + * TID transition is correct. If state exists, we do + * not bother to fixup the user space state as it was + * corrupted already. + */ + return futex_top_waiter(hb, key) ? -EINVAL : 1; + } uval = curval; @@ -875,6 +977,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this) struct task_struct *new_owner; struct futex_pi_state *pi_state = this->pi_state; u32 uninitialized_var(curval), newval; + int ret = 0; if (!pi_state) return -EINVAL; @@ -898,23 +1001,19 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this) new_owner = this->task; /* - * We pass it to the next owner. (The WAITERS bit is always - * kept enabled while there is PI state around. We must also - * preserve the owner died bit.) + * We pass it to the next owner. The WAITERS bit is always + * kept enabled while there is PI state around. We cleanup the + * owner died bit, because we are the owner. */ - if (!(uval & FUTEX_OWNER_DIED)) { - int ret = 0; + newval = FUTEX_WAITERS | task_pid_vnr(new_owner); - newval = FUTEX_WAITERS | task_pid_vnr(new_owner); - - if (cmpxchg_futex_value_locked(&curval, uaddr, uval, newval)) - ret = -EFAULT; - else if (curval != uval) - ret = -EINVAL; - if (ret) { - raw_spin_unlock(&pi_state->pi_mutex.wait_lock); - return ret; - } + if (cmpxchg_futex_value_locked(&curval, uaddr, uval, newval)) + ret = -EFAULT; + else if (curval != uval) + ret = -EINVAL; + if (ret) { + raw_spin_unlock(&pi_state->pi_mutex.wait_lock); + return ret; } raw_spin_lock_irq(&pi_state->owner->pi_lock); @@ -1193,7 +1292,7 @@ void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key, * * Returns: * 0 - failed to acquire the lock atomicly - * 1 - acquired the lock + * >0 - acquired the lock, return value is vpid of the top_waiter * <0 - error */ static int futex_proxy_trylock_atomic(u32 __user *pifutex, @@ -1204,7 +1303,7 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex, { struct futex_q *top_waiter = NULL; u32 curval; - int ret; + int ret, vpid; if (get_futex_value_locked(&curval, pifutex)) return -EFAULT; @@ -1232,11 +1331,13 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex, * the contended case or if set_waiters is 1. The pi_state is returned * in ps in contended cases. */ + vpid = task_pid_vnr(top_waiter->task); ret = futex_lock_pi_atomic(pifutex, hb2, key2, ps, top_waiter->task, set_waiters); - if (ret == 1) + if (ret == 1) { requeue_pi_wake_futex(top_waiter, key2, hb2); - + return vpid; + } return ret; } @@ -1268,10 +1369,16 @@ static int futex_requeue(u32 __user *uaddr1, unsigned int flags, struct futex_hash_bucket *hb1, *hb2; struct plist_head *head1; struct futex_q *this, *next; - u32 curval2; if (requeue_pi) { /* + * Requeue PI only works on two distinct uaddrs. This + * check is only valid for private futexes. See below. + */ + if (uaddr1 == uaddr2) + return -EINVAL; + + /* * requeue_pi requires a pi_state, try to allocate it now * without any locks in case it fails. */ @@ -1309,6 +1416,15 @@ retry: if (unlikely(ret != 0)) goto out_put_key1; + /* + * The check above which compares uaddrs is not sufficient for + * shared futexes. We need to compare the keys: + */ + if (requeue_pi && match_futex(&key1, &key2)) { + ret = -EINVAL; + goto out_put_keys; + } + hb1 = hash_futex(&key1); hb2 = hash_futex(&key2); @@ -1354,16 +1470,25 @@ retry_private: * At this point the top_waiter has either taken uaddr2 or is * waiting on it. If the former, then the pi_state will not * exist yet, look it up one more time to ensure we have a - * reference to it. + * reference to it. If the lock was taken, ret contains the + * vpid of the top waiter task. */ - if (ret == 1) { + if (ret > 0) { WARN_ON(pi_state); drop_count++; task_count++; - ret = get_futex_value_locked(&curval2, uaddr2); - if (!ret) - ret = lookup_pi_state(curval2, hb2, &key2, - &pi_state); + /* + * If we acquired the lock, then the user + * space value of uaddr2 should be vpid. It + * cannot be changed by the top waiter as it + * is blocked on hb2 lock if it tries to do + * so. If something fiddled with it behind our + * back the pi state lookup might unearth + * it. So we rather use the known value than + * rereading and handing potential crap to + * lookup_pi_state. + */ + ret = lookup_pi_state(ret, hb2, &key2, &pi_state); } switch (ret) { @@ -2133,9 +2258,10 @@ retry: /* * To avoid races, try to do the TID -> 0 atomic transition * again. If it succeeds then we can return without waking - * anyone else up: + * anyone else up. We only try this if neither the waiters nor + * the owner died bit are set. */ - if (!(uval & FUTEX_OWNER_DIED) && + if (!(uval & ~FUTEX_TID_MASK) && cmpxchg_futex_value_locked(&uval, uaddr, vpid, 0)) goto pi_faulted; /* @@ -2167,11 +2293,9 @@ retry: /* * No waiters - kernel unlocks the futex: */ - if (!(uval & FUTEX_OWNER_DIED)) { - ret = unlock_futex_pi(uaddr, uval); - if (ret == -EFAULT) - goto pi_faulted; - } + ret = unlock_futex_pi(uaddr, uval); + if (ret == -EFAULT) + goto pi_faulted; out_unlock: spin_unlock(&hb->lock); @@ -2331,6 +2455,15 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, if (ret) goto out_key2; + /* + * The check above which compares uaddrs is not sufficient for + * shared futexes. We need to compare the keys: + */ + if (match_futex(&q.key, &key2)) { + ret = -EINVAL; + goto out_put_keys; + } + /* Queue the futex_q, drop the hb lock, wait for wakeup. */ futex_wait_queue_me(hb, &q, to); diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 60f7e326b6c8..20e88afba69b 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -232,6 +232,11 @@ again: goto again; } timer->base = new_base; + } else { + if (cpu != this_cpu && hrtimer_check_target(timer, new_base)) { + cpu = this_cpu; + goto again; + } } return new_base; } @@ -567,6 +572,23 @@ hrtimer_force_reprogram(struct hrtimer_cpu_base *cpu_base, int skip_equal) cpu_base->expires_next.tv64 = expires_next.tv64; + /* + * If a hang was detected in the last timer interrupt then we + * leave the hang delay active in the hardware. We want the + * system to make progress. That also prevents the following + * scenario: + * T1 expires 50ms from now + * T2 expires 5s from now + * + * T1 is removed, so this code is called and would reprogram + * the hardware to 5s from now. Any hrtimer_start after that + * will not reprogram the hardware due to hang_detected being + * set. So we'd effectivly block all timers until the T2 event + * fires. + */ + if (cpu_base->hang_detected) + return; + if (cpu_base->expires_next.tv64 != KTIME_MAX) tick_program_event(cpu_base->expires_next, 1); } @@ -958,11 +980,8 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, /* Remove an active timer from the queue: */ ret = remove_hrtimer(timer, base); - /* Switch the timer base, if necessary: */ - new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED); - if (mode & HRTIMER_MODE_REL) { - tim = ktime_add_safe(tim, new_base->get_time()); + tim = ktime_add_safe(tim, base->get_time()); /* * CONFIG_TIME_LOW_RES is a temporary way for architectures * to signal that they simply return xtime in @@ -977,6 +996,9 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, hrtimer_set_expires_range_ns(timer, tim, delta_ns); + /* Switch the timer base, if necessary: */ + new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED); + timer_stats_hrtimer_set_start_info(timer); leftmost = enqueue_hrtimer(timer, new_base); diff --git a/kernel/module.c b/kernel/module.c index 65362d9ab783..95ecd9ffc91f 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2888,6 +2888,9 @@ static struct module *load_module(void __user *umod, /* This has to be done once we're sure module name is unique. */ dynamic_debug_setup(info.debug, info.num_debug); + /* Ftrace init must be called in the MODULE_STATE_UNFORMED state */ + ftrace_module_init(mod); + /* Find duplicate symbols */ err = verify_export_symbols(mod); if (err < 0) diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c index a86cf9d9eb11..1f4afddf158a 100644 --- a/kernel/sched_cpupri.c +++ b/kernel/sched_cpupri.c @@ -68,8 +68,7 @@ int cpupri_find(struct cpupri *cp, struct task_struct *p, int idx = 0; int task_pri = convert_prio(p->prio); - if (task_pri >= MAX_RT_PRIO) - return 0; + BUG_ON(task_pri >= CPUPRI_NR_PRIORITIES); for (idx = 0; idx < task_pri; idx++) { struct cpupri_vec *vec = &cp->pri_to_cpu[idx]; diff --git a/kernel/timer.c b/kernel/timer.c index f8b05a467883..349953ee9027 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -769,7 +769,7 @@ unsigned long apply_slack(struct timer_list *timer, unsigned long expires) bit = find_last_bit(&mask, BITS_PER_LONG); - mask = (1 << bit) - 1; + mask = (1UL << bit) - 1; expires_limit = expires_limit & ~(mask); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index a65fa363c024..dcbafedc38ae 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3542,16 +3542,11 @@ static void ftrace_init_module(struct module *mod, ftrace_process_locs(mod, start, end); } -static int ftrace_module_notify_enter(struct notifier_block *self, - unsigned long val, void *data) +void ftrace_module_init(struct module *mod) { - struct module *mod = data; - - if (val == MODULE_STATE_COMING) - ftrace_init_module(mod, mod->ftrace_callsites, - mod->ftrace_callsites + - mod->num_ftrace_callsites); - return 0; + ftrace_init_module(mod, mod->ftrace_callsites, + mod->ftrace_callsites + + mod->num_ftrace_callsites); } static int ftrace_module_notify_exit(struct notifier_block *self, @@ -3565,11 +3560,6 @@ static int ftrace_module_notify_exit(struct notifier_block *self, return 0; } #else -static int ftrace_module_notify_enter(struct notifier_block *self, - unsigned long val, void *data) -{ - return 0; -} static int ftrace_module_notify_exit(struct notifier_block *self, unsigned long val, void *data) { @@ -3577,11 +3567,6 @@ static int ftrace_module_notify_exit(struct notifier_block *self, } #endif /* CONFIG_MODULES */ -struct notifier_block ftrace_module_enter_nb = { - .notifier_call = ftrace_module_notify_enter, - .priority = INT_MAX, /* Run before anything that can use kprobes */ -}; - struct notifier_block ftrace_module_exit_nb = { .notifier_call = ftrace_module_notify_exit, .priority = INT_MIN, /* Run after anything that can remove kprobes */ @@ -3618,10 +3603,6 @@ void __init ftrace_init(void) __start_mcount_loc, __stop_mcount_loc); - ret = register_module_notifier(&ftrace_module_enter_nb); - if (ret) - pr_warning("Failed to register trace ftrace module enter notifier\n"); - ret = register_module_notifier(&ftrace_module_exit_nb); if (ret) pr_warning("Failed to register trace ftrace module exit notifier\n"); diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index 41b25a0ed616..088fbc525ef4 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -638,6 +638,9 @@ static int tracepoint_module_coming(struct module *mod) struct tp_module *tp_mod, *iter; int ret = 0; + if (!mod->num_tracepoints) + return 0; + /* * We skip modules that taint the kernel, especially those with different * module headers (for forced load), to make sure we don't cause a crash. @@ -681,6 +684,9 @@ static int tracepoint_module_going(struct module *mod) { struct tp_module *pos; + if (!mod->num_tracepoints) + return 0; + mutex_lock(&tracepoints_mutex); tracepoint_update_probe_range(mod->tracepoints_ptrs, mod->tracepoints_ptrs + mod->num_tracepoints); diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 96c4bcf188b1..51901b184872 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1033,15 +1033,16 @@ int __memory_failure(unsigned long pfn, int trapno, int flags) return 0; } else if (PageHuge(hpage)) { /* - * Check "just unpoisoned", "filter hit", and - * "race with other subpage." + * Check "filter hit" and "race with other subpage." */ lock_page(hpage); - if (!PageHWPoison(hpage) - || (hwpoison_filter(p) && TestClearPageHWPoison(p)) - || (p != hpage && TestSetPageHWPoison(hpage))) { - atomic_long_sub(nr_pages, &mce_bad_pages); - return 0; + if (PageHWPoison(hpage)) { + if ((hwpoison_filter(p) && TestClearPageHWPoison(p)) + || (p != hpage && TestSetPageHWPoison(hpage))) { + atomic_long_sub(nr_pages, &mce_bad_pages); + unlock_page(hpage); + return 0; + } } set_page_hwpoison_huge_page(hpage); res = dequeue_hwpoisoned_huge_page(hpage); @@ -1093,6 +1094,8 @@ int __memory_failure(unsigned long pfn, int trapno, int flags) */ if (!PageHWPoison(p)) { printk(KERN_ERR "MCE %#lx: just unpoisoned\n", pfn); + atomic_long_sub(nr_pages, &mce_bad_pages); + put_page(hpage); res = 0; goto out; } diff --git a/mm/page-writeback.c b/mm/page-writeback.c index b5cd796fcd6c..d2ac057008f2 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -559,7 +559,7 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi, * => fast response on large errors; small oscillation near setpoint */ setpoint = (freerun + limit) / 2; - x = div_s64((setpoint - dirty) << RATELIMIT_CALC_SHIFT, + x = div64_s64(((s64)setpoint - (s64)dirty) << RATELIMIT_CALC_SHIFT, limit - setpoint + 1); pos_ratio = x; pos_ratio = pos_ratio * x >> RATELIMIT_CALC_SHIFT; @@ -625,7 +625,7 @@ static unsigned long bdi_position_ratio(struct backing_dev_info *bdi, x_intercept = bdi_setpoint + span; if (bdi_dirty < x_intercept - span / 4) { - pos_ratio = div_u64(pos_ratio * (x_intercept - bdi_dirty), + pos_ratio = div64_u64(pos_ratio * (x_intercept - bdi_dirty), x_intercept - bdi_setpoint + 1); } else pos_ratio /= 4; diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index aa1264910c4e..4d99d42f30ff 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -610,14 +610,17 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { struct hci_cp_auth_requested cp; - /* encrypt must be pending if auth is also pending */ - set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); - cp.handle = cpu_to_le16(conn->handle); hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); + + /* If we're already encrypted set the REAUTH_PEND flag, + * otherwise set the ENCRYPT_PEND. + */ if (conn->key_type != 0xff) set_bit(HCI_CONN_REAUTH_PEND, &conn->pend); + else + set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); } return 0; diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index cbf9ccd45784..99a48a39c009 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -211,11 +211,26 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[]) return 0; } +static int br_dev_newlink(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[]) +{ + struct net_bridge *br = netdev_priv(dev); + + if (tb[IFLA_ADDRESS]) { + spin_lock_bh(&br->lock); + br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); + spin_unlock_bh(&br->lock); + } + + return register_netdevice(dev); +} + struct rtnl_link_ops br_link_ops __read_mostly = { .kind = "bridge", .priv_size = sizeof(struct net_bridge), .setup = br_dev_setup, .validate = br_validate, + .newlink = br_dev_newlink, .dellink = br_dev_delete, }; diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 5864cc491369..45f93f8a10c8 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1044,10 +1044,9 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl, if (repl->num_counters && copy_to_user(repl->counters, counterstmp, repl->num_counters * sizeof(struct ebt_counter))) { - ret = -EFAULT; + /* Silent error, can't fail, new table is already in place */ + net_warn_ratelimited("ebtables: counters copy to user failed while replacing table\n"); } - else - ret = 0; /* decrease module count and free resources */ EBT_ENTRY_ITERATE(table->entries, table->entries_size, diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index ad5b70801f37..20ba2d59dc23 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -284,6 +284,37 @@ static int ceph_tcp_sendmsg(struct socket *sock, struct kvec *iov, return r; } +static int __ceph_tcp_sendpage(struct socket *sock, struct page *page, + int offset, size_t size, bool more) +{ + int flags = MSG_DONTWAIT | MSG_NOSIGNAL | (more ? MSG_MORE : MSG_EOR); + int ret; + + ret = kernel_sendpage(sock, page, offset, size, flags); + if (ret == -EAGAIN) + ret = 0; + + return ret; +} + +static int ceph_tcp_sendpage(struct socket *sock, struct page *page, + int offset, size_t size, bool more) +{ + int ret; + struct kvec iov; + + /* sendpage cannot properly handle pages with page_count == 0, + * we need to fallback to sendmsg if that's the case */ + if (page_count(page) >= 1) + return __ceph_tcp_sendpage(sock, page, offset, size, more); + + iov.iov_base = kmap(page) + offset; + iov.iov_len = size; + ret = ceph_tcp_sendmsg(sock, &iov, 1, size, more); + kunmap(page); + + return ret; +} /* * Shutdown/close the socket for the given connection. @@ -851,18 +882,14 @@ static int write_partial_msg_pages(struct ceph_connection *con) cpu_to_le32(crc32c(tmpcrc, base, len)); con->out_msg_pos.did_page_crc = 1; } - ret = kernel_sendpage(con->sock, page, + ret = ceph_tcp_sendpage(con->sock, page, con->out_msg_pos.page_pos + page_shift, - len, - MSG_DONTWAIT | MSG_NOSIGNAL | - MSG_MORE); + len, 1); if (crc && (msg->pages || msg->pagelist || msg->bio || in_trail)) kunmap(page); - if (ret == -EAGAIN) - ret = 0; if (ret <= 0) goto out; diff --git a/net/core/dev.c b/net/core/dev.c index 7bcf37df0ce9..854da1571997 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3648,6 +3648,7 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb) skb->vlan_tci = 0; skb->dev = napi->dev; skb->skb_iif = 0; + skb->truesize = SKB_TRUESIZE(skb_end_offset(skb)); napi->skb = skb; } diff --git a/net/core/filter.c b/net/core/filter.c index 5dea45279215..9c88080e4049 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -320,6 +320,8 @@ load_b: if (skb_is_nonlinear(skb)) return 0; + if (skb->len < sizeof(struct nlattr)) + return 0; if (A > skb->len - sizeof(struct nlattr)) return 0; @@ -336,11 +338,13 @@ load_b: if (skb_is_nonlinear(skb)) return 0; + if (skb->len < sizeof(struct nlattr)) + return 0; if (A > skb->len - sizeof(struct nlattr)) return 0; nla = (struct nlattr *)&skb->data[A]; - if (nla->nla_len > A - skb->len) + if (nla->nla_len > skb->len - A) return 0; nla = nla_find_nested(nla, X); diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 5b7d5f25d43e..7beaf10cc837 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -744,7 +744,8 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev, return 0; } -static size_t rtnl_port_size(const struct net_device *dev) +static size_t rtnl_port_size(const struct net_device *dev, + u32 ext_filter_mask) { size_t port_size = nla_total_size(4) /* PORT_VF */ + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ @@ -760,7 +761,8 @@ static size_t rtnl_port_size(const struct net_device *dev) size_t port_self_size = nla_total_size(sizeof(struct nlattr)) + port_size; - if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) + if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || + !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; if (dev_num_vf(dev->dev.parent)) return port_self_size + vf_ports_size + @@ -791,7 +793,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(ext_filter_mask & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ - + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ + + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */ } @@ -851,11 +853,13 @@ static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) return 0; } -static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) +static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, + u32 ext_filter_mask) { int err; - if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) + if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || + !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; err = rtnl_port_self_fill(skb, dev); @@ -1002,7 +1006,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, nla_nest_end(skb, vfinfo); } - if (rtnl_port_fill(skb, dev)) + if (rtnl_port_fill(skb, dev, ext_filter_mask)) goto nla_put_failure; if (dev->rtnl_link_ops) { @@ -1057,6 +1061,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) struct hlist_node *node; struct nlattr *tb[IFLA_MAX+1]; u32 ext_filter_mask = 0; + int err; s_h = cb->args[0]; s_idx = cb->args[1]; @@ -1077,11 +1082,17 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) hlist_for_each_entry_rcu(dev, node, head, index_hlist) { if (idx < s_idx) goto cont; - if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, - NETLINK_CB(cb->skb).pid, - cb->nlh->nlmsg_seq, 0, - NLM_F_MULTI, - ext_filter_mask) <= 0) + err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, + NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, 0, + NLM_F_MULTI, + ext_filter_mask); + /* If we ran out of room on the first message, + * we're in trouble + */ + WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); + + if (err <= 0) goto out; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 8ac4a0f3e869..9204d9b747f2 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -743,7 +743,7 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old) struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t gfp_mask) { int headerlen = skb_headroom(skb); - unsigned int size = (skb_end_pointer(skb) - skb->head) + skb->data_len; + unsigned int size = skb_end_offset(skb) + skb->data_len; struct sk_buff *n = alloc_skb(size, gfp_mask); if (!n) @@ -843,7 +843,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, { int i; u8 *data; - int size = nhead + (skb_end_pointer(skb) - skb->head) + ntail; + int size = nhead + skb_end_offset(skb) + ntail; long off; bool fastpath; @@ -2642,14 +2642,13 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features) if (unlikely(!nskb)) goto err; - hsize = skb_end_pointer(nskb) - nskb->head; + hsize = skb_end_offset(nskb); if (skb_cow_head(nskb, doffset + headroom)) { kfree_skb(nskb); goto err; } - nskb->truesize += skb_end_pointer(nskb) - nskb->head - - hsize; + nskb->truesize += skb_end_offset(nskb) - hsize; skb_release_head_state(nskb); __skb_push(nskb, doffset); } else { @@ -3197,12 +3196,14 @@ EXPORT_SYMBOL(__skb_warn_lro_forwarding); unsigned int skb_gso_transport_seglen(const struct sk_buff *skb) { const struct skb_shared_info *shinfo = skb_shinfo(skb); - unsigned int hdr_len; if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) - hdr_len = tcp_hdrlen(skb); - else - hdr_len = sizeof(struct udphdr); - return hdr_len + shinfo->gso_size; + return tcp_hdrlen(skb) + shinfo->gso_size; + + /* UFO sets gso_size to the size of the fragmentation + * payload, i.e. the size of the L4 (UDP) header is already + * accounted for. + */ + return shinfo->gso_size; } EXPORT_SYMBOL_GPL(skb_gso_transport_seglen); diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index d01f9c658dec..76da979baed0 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -752,13 +752,13 @@ struct fib_info *fib_create_info(struct fib_config *cfg) fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL); if (fi == NULL) goto failure; + fib_info_cnt++; if (cfg->fc_mx) { fi->fib_metrics = kzalloc(sizeof(u32) * RTAX_MAX, GFP_KERNEL); if (!fi->fib_metrics) goto failure; } else fi->fib_metrics = (u32 *) dst_default_metrics; - fib_info_cnt++; fi->fib_net = hold_net(net); fi->fib_protocol = cfg->fc_protocol; diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index e0d9f02fec11..7593f3a46035 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c @@ -42,12 +42,12 @@ static bool ip_may_fragment(const struct sk_buff *skb) { return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) || - !skb->local_df; + skb->local_df; } static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) { - if (skb->len <= mtu || skb->local_df) + if (skb->len <= mtu) return false; if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index fd7a3f68917f..bcb6e6197595 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -1039,8 +1039,10 @@ static int __do_replace(struct net *net, const char *name, xt_free_table_info(oldinfo); if (copy_to_user(counters_ptr, counters, - sizeof(struct xt_counters) * num_counters) != 0) - ret = -EFAULT; + sizeof(struct xt_counters) * num_counters) != 0) { + /* Silent error, can't fail, new table is already in place */ + net_warn_ratelimited("arptables: counters copy to user failed while replacing table\n"); + } vfree(counters); xt_table_unlock(t); return ret; diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 24e556e83a3b..f98a1cf54c5b 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -1227,8 +1227,10 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks, xt_free_table_info(oldinfo); if (copy_to_user(counters_ptr, counters, - sizeof(struct xt_counters) * num_counters) != 0) - ret = -EFAULT; + sizeof(struct xt_counters) * num_counters) != 0) { + /* Silent error, can't fail, new table is already in place */ + net_warn_ratelimited("iptables: counters copy to user failed while replacing table\n"); + } vfree(counters); xt_table_unlock(t); return ret; diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 00975b6db7e9..d495d4bcd745 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -203,26 +203,33 @@ static int ping_init_sock(struct sock *sk) struct net *net = sock_net(sk); gid_t group = current_egid(); gid_t range[2]; - struct group_info *group_info = get_current_groups(); - int i, j, count = group_info->ngroups; + struct group_info *group_info; + int i, j, count; + int ret = 0; inet_get_ping_group_range_net(net, range, range+1); if (range[0] <= group && group <= range[1]) return 0; + group_info = get_current_groups(); + count = group_info->ngroups; for (i = 0; i < group_info->nblocks; i++) { int cp_count = min_t(int, NGROUPS_PER_BLOCK, count); for (j = 0; j < cp_count; j++) { group = group_info->blocks[i][j]; if (range[0] <= group && group <= range[1]) - return 0; + goto out_release_group; } count -= cp_count; } - return -EACCES; + ret = -EACCES; + +out_release_group: + put_group_info(group_info); + return ret; } static void ping_close(struct sock *sk, long timeout) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 6768ce2f50b1..6526110ba784 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2142,7 +2142,7 @@ static int __mkroute_input(struct sk_buff *skb, struct in_device *out_dev; unsigned int flags = 0; __be32 spec_dst; - u32 itag; + u32 itag = 0; /* get a working reference to the output device */ out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res)); diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index b78eac2b7079..ed3d6d4a6d65 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -406,7 +406,7 @@ static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt_us) ratio -= ca->delayed_ack >> ACK_RATIO_SHIFT; ratio += cnt; - ca->delayed_ack = min(ratio, ACK_RATIO_LIMIT); + ca->delayed_ack = clamp(ratio, 1U, ACK_RATIO_LIMIT); } /* Some calls are for duplicates without timetamps */ diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 94874b0bdcdc..2e752b2f5b30 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -1249,8 +1249,10 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks, xt_free_table_info(oldinfo); if (copy_to_user(counters_ptr, counters, - sizeof(struct xt_counters) * num_counters) != 0) - ret = -EFAULT; + sizeof(struct xt_counters) * num_counters) != 0) { + /* Silent error, can't fail, new table is already in place */ + net_warn_ratelimited("ip6tables: counters copy to user failed while replacing table\n"); + } vfree(counters); xt_table_unlock(t); return ret; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 39e11f923a73..782f67a4f568 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1056,7 +1056,7 @@ static unsigned int ip6_mtu(const struct dst_entry *dst) unsigned int mtu = dst_metric_raw(dst, RTAX_MTU); if (mtu) - return mtu; + goto out; mtu = IPV6_MIN_MTU; @@ -1066,7 +1066,8 @@ static unsigned int ip6_mtu(const struct dst_entry *dst) mtu = idev->cnf.mtu6; rcu_read_unlock(); - return mtu; +out: + return min_t(unsigned int, mtu, IP6_MAX_MTU); } static struct dst_entry *icmp6_dst_gc_list; diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 969cd3eacd2b..e0f0934d6c39 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -772,9 +772,9 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr, session->deref = pppol2tp_session_sock_put; /* If PMTU discovery was enabled, use the MTU that was discovered */ - dst = sk_dst_get(sk); + dst = sk_dst_get(tunnel->sock); if (dst != NULL) { - u32 pmtu = dst_mtu(__sk_dst_get(sk)); + u32 pmtu = dst_mtu(__sk_dst_get(tunnel->sock)); if (pmtu != 0) session->mtu = session->mru = pmtu - PPPOL2TP_HEADER_OVERHEAD; diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c index e051398fdf6b..d067ed16bab1 100644 --- a/net/sched/act_mirred.c +++ b/net/sched/act_mirred.c @@ -201,13 +201,12 @@ static int tcf_mirred(struct sk_buff *skb, const struct tc_action *a, out: if (err) { m->tcf_qstats.overlimits++; - /* should we be asking for packet to be dropped? - * may make sense for redirect case only - */ - retval = TC_ACT_SHOT; - } else { + if (m->tcfm_eaction != TCA_EGRESS_MIRROR) + retval = TC_ACT_SHOT; + else + retval = m->tcf_action; + } else retval = m->tcf_action; - } spin_unlock(&m->tcf_lock); return retval; diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 6f6ad8686833..de35e01f03a9 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -528,8 +528,13 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr, continue; if ((laddr->state == SCTP_ADDR_SRC) && (AF_INET == laddr->a.sa.sa_family)) { - fl4->saddr = laddr->a.v4.sin_addr.s_addr; fl4->fl4_sport = laddr->a.v4.sin_port; + flowi4_update_output(fl4, + asoc->base.sk->sk_bound_dev_if, + RT_CONN_FLAGS(asoc->base.sk), + daddr->v4.sin_addr.s_addr, + laddr->a.v4.sin_addr.s_addr); + rt = ip_route_output_key(&init_net, fl4); if (!IS_ERR(rt)) { dst = &rt->dst; diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 619228d156c4..dc5748f3e384 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -569,12 +569,16 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname) if (strncmp(symname, "_restgpr_", sizeof("_restgpr_") - 1) == 0 || strncmp(symname, "_savegpr_", sizeof("_savegpr_") - 1) == 0 || strncmp(symname, "_rest32gpr_", sizeof("_rest32gpr_") - 1) == 0 || - strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0) + strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0 || + strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 || + strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0) return 1; if (info->hdr->e_machine == EM_PPC64) /* Special register function linked on all modules during final link of .ko */ if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 || - strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0) + strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 || + strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 || + strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0) return 1; /* Do not ignore this symbol */ return 0; diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c index 74268b4c2ee1..bdd2c0d690d6 100644 --- a/virt/kvm/async_pf.c +++ b/virt/kvm/async_pf.c @@ -75,7 +75,6 @@ static void async_pf_execute(struct work_struct *work) spin_lock(&vcpu->async_pf.lock); list_add_tail(&apf->link, &vcpu->async_pf.done); apf->page = page; - apf->done = true; spin_unlock(&vcpu->async_pf.lock); /* @@ -88,7 +87,7 @@ static void async_pf_execute(struct work_struct *work) if (waitqueue_active(&vcpu->wq)) wake_up_interruptible(&vcpu->wq); - mmdrop(mm); + mmput(mm); kvm_put_kvm(vcpu->kvm); } @@ -99,10 +98,12 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu) struct kvm_async_pf *work = list_entry(vcpu->async_pf.queue.next, typeof(*work), queue); - cancel_work_sync(&work->work); list_del(&work->queue); - if (!work->done) /* work was canceled */ + if (cancel_work_sync(&work->work)) { + mmput(work->mm); + kvm_put_kvm(vcpu->kvm); /* == work->vcpu->kvm */ kmem_cache_free(async_pf_cache, work); + } } spin_lock(&vcpu->async_pf.lock); @@ -163,13 +164,12 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, return 0; work->page = NULL; - work->done = false; work->vcpu = vcpu; work->gva = gva; work->addr = gfn_to_hva(vcpu->kvm, gfn); work->arch = *arch; work->mm = current->mm; - atomic_inc(&work->mm->mm_count); + atomic_inc(&work->mm->mm_users); kvm_get_kvm(work->vcpu->kvm); /* this can't really happen otherwise gfn_to_pfn_async @@ -187,7 +187,7 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, return 1; retry_sync: kvm_put_kvm(work->vcpu->kvm); - mmdrop(work->mm); + mmput(work->mm); kmem_cache_free(async_pf_cache, work); return 0; }