- 05 Jan, 2013 35 commits
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Roland Dreier authored
print_prefix() passes a NULL buf to print_time() to get the length of the time prefix; when printk times are enabled, the current code just returns the constant 15, which matches the format "[%5lu.%06lu] " used to print the time value. However, this is obviously incorrect when the whole seconds part of the time gets beyond 5 digits (100000 seconds is a bit more than a day of uptime). The simple fix is to use snprintf(NULL, 0, ...) to calculate the actual length of the time prefix. This could be micro-optimized but it seems better to have simpler, more readable code here. The bug leads to the syslog system call miscomputing which messages fit into the userspace buffer. If there are enough messages to fill log_buf_len and some have a timestamp >= 100000, dmesg may fail with: # dmesg klogctl: Bad address When this happens, strace shows that the failure is indeed EFAULT due to the kernel mistakenly accessing past the end of dmesg's buffer, since dmesg asks the kernel how big a buffer it needs, allocates a bit more, and then gets an error when it asks the kernel to fill it: syslog(0xa, 0, 0) = 1048576 mmap(NULL, 1052672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa4d25d2000 syslog(0x3, 0x7fa4d25d2010, 0x100008) = -1 EFAULT (Bad address) As far as I can see, the bug has been there as long as print_time(), which comes from commit 084681d1 ("printk: flush continuation lines immediately to console") in 3.5-rc5. Signed-off-by:Roland Dreier <roland@purestorage.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Cc: Sylvain Munaut <s.munaut@whatever-company.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Tony Prisk authored
tm_mon is 0..11, whereas vt8500 expects 1..12 for the month field, causing invalid date errors for January, and causing the day field to roll over incorrectly. The century flag is only handled in vt8500_rtc_read_time, but not set in vt8500_rtc_set_time. This patch corrects the behaviour of the century flag. Signed-off-by:
Edgar Toernig <froese@gmx.de> Signed-off-by:
Tony Prisk <linux@prisktech.co.nz> Cc: <stable@vger.kernel.org> Signed-off-by:
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Tony Prisk authored
Control register bitfield for 12H/24H mode is handled incorrectly. Setting CR_24H actually enables 12H mode. This patch renames the define and changes the initialization code to correctly set 24H mode. Signed-off-by:
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Laxman Dewangan authored
Add an RTC driver for TPS6586X chips by TI. This driver supports: - Setting and getting time and date. - Setting and reading alarm time. - Alarm and interrupt functionlity. [akpm@linux-foundation.org: remove stray semicolons] [akpm@linux-foundation.org: start epoch in 2009] Signed-off-by:
Laxman Dewangan <ldewangan@nvidia.com> Tested-by:
Marc Dietrich <marvin24@gmx.de> Signed-off-by:
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Cesar Eduardo Barros authored
This directory was moved to drivers/staging/sm7xxfb/ by commit 925aa660 ("staging: sm7xxfb: sm7xx becomes sm7xxfb"). Signed-off-by:
Cesar Eduardo Barros <cesarb@cesarb.net> Cc: Teddy Wang <teddy.wang@siliconmotion.com.cn> Acked-by:
Javier Muñoz <jmunhoz@igalia.com> Signed-off-by:
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Cesar Eduardo Barros authored
Added by commit 200efedd ("pwm: Take over maintainership of the PWM subsystem"), but I could not find any trace of that file being ever added to the repository. Signed-off-by:
Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by:
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Cesar Eduardo Barros authored
This pattern only matched arch/frv/lib/perf_event.c, which was removed by commit e360adbe ("irq_work: Add generic hardirq context callbacks"). Signed-off-by:
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Cesar Eduardo Barros authored
This driver was removed by commit 6187fee4 ("mmc: remove imxmmc driver"). Signed-off-by:
Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by:
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Cesar Eduardo Barros authored
The documentation was moved to Documentation/misc-devices/mei/ instead. Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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Cesar Eduardo Barros authored
These files were removed by commit 1a8359e4 ("x86/mid: Remove Intel Moorestown"). Signed-off-by:
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Cesar Eduardo Barros authored
This directory was removed by commit 7d99b3ab ("isci, firmware: Remove isci fallback parameter blob and generator"). Signed-off-by:
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Cesar Eduardo Barros authored
This directory was moved to drivers/net/ieee802154/ by commit 31d178bf ("drivers/ieee802154: move ieee802154 drivers to net folder"). Signed-off-by:
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Cesar Eduardo Barros authored
This file was moved to include/linux/platform_data/video-imxfb.h by commit 82906b13 ("ARM: imx: move platform_data definitions"). Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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Cesar Eduardo Barros authored
This driver was removed by commit 1c3a918f ("ARM: clps711x: Remove board support for CEIVA"). Signed-off-by:
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Cesar Eduardo Barros authored
This driver was never at dvb-usb-v2, as far as I could see. Signed-off-by:
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Cesar Eduardo Barros authored
Several headers were moved or split to uapi/. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Cesar Eduardo Barros authored
This file was moved to drivers/media/platform/soc_camera/atmel-isi.c by commit b47ff4a3 ("[media] move soc_camera to its own directory"). Signed-off-by:
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Cesar Eduardo Barros authored
This file was moved to include/linux/platform_data/dma-atmel.h by commit 7cdc39ee ("ARM: at91: move platform_data definitions"). Signed-off-by:
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Cesar Eduardo Barros authored
Signed-off-by:
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Cesar Eduardo Barros authored
These files were merged into plat-samsung. Signed-off-by:
Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
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Cesar Eduardo Barros authored
This file was moved to arch/arm/mach-rpc/time.c by commit a1be5d64 ("ARM: riscpc: move time-acorn.c to mach-rpc"), and the pattern for arch/arm/mach-rpc/ already exists. Signed-off-by:
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Cesar Eduardo Barros authored
This subdirectory entry was added by commit 8a5700cd ("MAINTAINERS: add drivers/platform/msm to MSM subsystem") back in 2011, but I could not find any trace of that directory being ever added to the repository. Signed-off-by:
David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Signed-off-by:
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Michal Hocko authored
Since commit e303297e ("mm: extended batches for generic mmu_gather") we are batching pages to be freed until either tlb_next_batch cannot allocate a new batch or we are done. This works just fine most of the time but we can get in troubles with non-preemptible kernel (CONFIG_PREEMPT_NONE or CONFIG_PREEMPT_VOLUNTARY) on large machines where too aggressive batching might lead to soft lockups during process exit path (exit_mmap) because there are no scheduling points down the free_pages_and_swap_cache path and so the freeing can take long enough to trigger the soft lockup. The lockup is harmless except when the system is setup to panic on softlockup which is not that unusual. The simplest way to work around this issue is to limit the maximum number of batches in a single mmu_gather. 10k of collected pages should be safe to prevent from soft lockups (we would have 2ms for one) even if they are all freed without an explicit scheduling point. This patch doesn't add any new explicit scheduling points because it relies on zap_pmd_range during page tables zapping which calls cond_resched per PMD. The following lockup has been reported for 3.0 kernel with a huge process (in order of hundreds gigs but I do know any more details). BUG: soft lockup - CPU#56 stuck for 22s! [kernel:31053] Modules linked in: af_packet nfs lockd fscache auth_rpcgss nfs_acl sunrpc mptctl mptbase autofs4 binfmt_misc dm_round_robin dm_multipath bonding cpufreq_conservative cpufreq_userspace cpufreq_powersave pcc_cpufreq mperf microcode fuse loop osst sg sd_mod crc_t10dif st qla2xxx scsi_transport_fc scsi_tgt netxen_nic i7core_edac iTCO_wdt joydev e1000e serio_raw pcspkr edac_core iTCO_vendor_support acpi_power_meter rtc_cmos hpwdt hpilo button container usbhid hid dm_mirror dm_region_hash dm_log linear uhci_hcd ehci_hcd usbcore usb_common scsi_dh_emc scsi_dh_alua scsi_dh_hp_sw scsi_dh_rdac scsi_dh dm_snapshot pcnet32 mii edd dm_mod raid1 ext3 mbcache jbd fan thermal processor thermal_sys hwmon cciss scsi_mod Supported: Yes CPU 56 Pid: 31053, comm: kernel Not tainted 3.0.31-0.9-default #1 HP ProLiant DL580 G7 RIP: 0010: _raw_spin_unlock_irqrestore+0x8/0x10 RSP: 0018:ffff883ec1037af0 EFLAGS: 00000206 RAX: 0000000000000e00 RBX: ffffea01a0817e28 RCX: ffff88803ffd9e80 RDX: 0000000000000200 RSI: 0000000000000206 RDI: 0000000000000206 RBP: 0000000000000002 R08: 0000000000000001 R09: ffff887ec724a400 R10: 0000000000000000 R11: dead000000200200 R12: ffffffff8144c26e R13: 0000000000000030 R14: 0000000000000297 R15: 000000000000000e FS: 00007ed834282700(0000) GS:ffff88c03f200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000068b240 CR3: 0000003ec13c5000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kernel (pid: 31053, threadinfo ffff883ec1036000, task ffff883ebd5d4100) Call Trace: release_pages+0xc5/0x260 free_pages_and_swap_cache+0x9d/0xc0 tlb_flush_mmu+0x5c/0x80 tlb_finish_mmu+0xe/0x50 exit_mmap+0xbd/0x120 mmput+0x49/0x120 exit_mm+0x122/0x160 do_exit+0x17a/0x430 do_group_exit+0x3d/0xb0 get_signal_to_deliver+0x247/0x480 do_signal+0x71/0x1b0 do_notify_resume+0x98/0xb0 int_signal+0x12/0x17 DWARF2 unwinder stuck at int_signal+0x12/0x17 Signed-off-by:
Michal Hocko <mhocko@suse.cz> Cc: <stable@vger.kernel.org> [3.0+] Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Commit 702d1a6e ("memory-hotplug: fix kswapd looping forever problem") added an isolated pageblocks counter (nr_pageblock_isolate in struct zone) and used it to adjust free pages counter in zone_watermark_ok_safe() to prevent kswapd looping forever problem. Then later, commit 2139cbe6 ("cma: fix counting of isolated pages") fixed accounting of isolated pages in global free pages counter. It made the previous zone_watermark_ok_safe() fix unnecessary and potentially harmful (cause now isolated pages may be accounted twice making free pages counter incorrect). This patch removes the special isolated pageblocks counter altogether which fixes zone_watermark_ok_safe() free pages check. Reported-by:
Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by:
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Cc: Minchan Kim <minchan@kernel.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Aaditya Kumar <aaditya.kumar.30@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@suse.cz> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by:
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Carlos Alberto Lopez Perez authored
Signed-off-by:
Carlos Alberto Lopez Perez <clopez@igalia.com> Cc: Rob Landley <rob@landley.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by:
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Stanislav Kinsbursky authored
Signed-off-by:
Stanislav Kinsbursky <skinsbursky@parallels.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: James Morris <jmorris@namei.org> Signed-off-by:
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Stanislav Kinsbursky authored
Remove the redundant and confusing fill_copy(). Also add copy_msg() check for error. In this case exit from the function have to be done instead of break, because further code interprets any error as EAGAIN. Also define copy_msg() for the case when CONFIG_CHECKPOINT_RESTORE is disabled. Signed-off-by:
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Stanislav Kinsbursky authored
This code works if CONFIG_CHECKPOINT_RESTORE is disabled. [akpm@linux-foundation.org: remove __maybe_unused] Signed-off-by:
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Stanislav Kinsbursky authored
Passing and checking of msgflg to free_copy() is redundant. This patch sets copy to NULL on declaration instead and checks for non-NULL in free_copy(). Note: in case of copy allocation failure, error is returned immediately. So no need to check for IS_ERR() in free_copy(). Signed-off-by:
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Stanislav Kinsbursky authored
This test can be used to check wheither kernel supports IPC message queue copy and restore features (required by CRIU project). Signed-off-by:
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Stanislav Kinsbursky authored
This patch is required for checkpoint/restore in userspace. c/r requires some way to get all pending IPC messages without deleting them from the queue (checkpoint can fail and in this case tasks will be resumed, so queue have to be valid). To achive this, new operation flag MSG_COPY for sys_msgrcv() system call was introduced. If this flag was specified, then mtype is interpreted as number of the message to copy. If MSG_COPY is set, then kernel will allocate dummy message with passed size, and then use new copy_msg() helper function to copy desired message (instead of unlinking it from the queue). Notes: 1) Return -ENOSYS if MSG_COPY is specified, but CONFIG_CHECKPOINT_RESTORE is not set. Signed-off-by:
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Stanislav Kinsbursky authored
Move all message related manipulation into one function msg_fill(). Actually, two functions because of the compat one. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by:
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Stanislav Kinsbursky authored
Add 3 new variables and sysctls to tune them (by one "next_id" variable for messages, semaphores and shared memory respectively). This variable can be used to set desired id for next allocated IPC object. By default it's equal to -1 and old behaviour is preserved. If this variable is non-negative, then desired idr will be extracted from it and used as a start value to search for free IDR slot. Notes: 1) this patch doesn't guarantee that the new object will have desired id. So it's up to user space how to handle new object with wrong id. 2) After a sucessful id allocation attempt, "next_id" will be set back to -1 (if it was non-negative). [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by:
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Stanislav Kinsbursky authored
This is a cleanup patch. The assignment is redundant. Signed-off-by:
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Joseph Lo authored
After Kernel 3.7, the Tegra device will only support booting with DT. The legacy Tegra RTC platform driver will not work anymore. This patch converts the driver to support DT. Signed-off-by:
Joseph Lo <josephl@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Joseph Lo <josephl@nvidia.com> Signed-off-by:
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- 04 Jan, 2013 5 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64Linus Torvalds authored
Pull ARM64 fixes from Catalin Marinas: - Missing include in asm/compat.h. - Kconfig updates. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: Always select ARM_AMBA and GENERIC_GPIO arm64: Keep the ARM64 Kconfig selects sorted arm64: Include linux/ptrace.h in asm/compat.h
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input update from Dmitry Torokhov: "Updates for the input subsystem. Just a couple of driver fixes this time." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: gpio_keys - defer probing if GPIO probing is deferred Input: gpio_keys_polled - defer probing if GPIO probing is deferred Input: sentelic - only report position of first finger as ST coordinates
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull radeon and minor nouveau fixes from Dave Airlie: "Just a radeon pull from Alex, fixes a few regressions since 3.7 and reworks some of the reset handling, and two minor nouveau fixes I found on the list, Ben will be back next week to take care of the couple of larger nouveau patches that I see outstanding." * 'drm-next' of git://people.freedesktop.org/~airlied/linux: drm/nouveau: fix init with agpgart-uninorth drm: nouveau: Fix build warning seen if HWMON is undefined drm/radeon: switch to a finer grained reset for SI (v2) drm/radeon: switch to a finer grained reset for cayman/TN drm/radeon: switch to a finer grained reset for evergreen drm/radeon: switch to a finer grained reset for r6xx/7xx drm/radeon: add GPU reset flags drm/radeon: fix typo in evergreen dma fence drm/radeon: Properly handle DDC probe for DP bridges drm/radeon: reset dma engine on gpu reset (v2) drm/radeon: print dma status reg on lockup (v2) drm/radeon: improve ring debugfs printing drm/radeon: add debugfs file for dma rings drm/radeon/r6xx: fix DMA engine for ttm bo transfers drm/radeon: add connector table for Mac G4 Silver
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Catalin Marinas authored
Needed for most SoCs. Signed-off-by:Catalin Marinas <catalin.marinas@arm.com>
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Aaro Koskinen authored
Check that the AGP aperture can be mapped. This follows a similar change done for Radeon (commit 365048ff, drm/radeon: AGP memory is only I/O if the aperture can be mapped by the CPU.). The patch fixes the following error seen on G5 iMac: nouveau E[ DRM] failed to create kernel channel, -12 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58806 Cc: stable@vger.kernel.org Reviewed-by:
Michel Dänzer <michel@daenzer.net> Signed-off-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by:
Dave Airlie <airlied@redhat.com>
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