04 Mar, 2015
2 commits
-
This is a tricky story of the new atomic state handling and the legacy
code fighting over each another. The bug at hand is an underrun of the
framebuffer reference with subsequent hilarity caused by the load
detect code. Which is peculiar since the the exact same code works
fine as the implementation of the legacy setcrtc ioctl.Let's look at the ingredients:
- Currently our code is a crazy mix of legacy modeset interfaces to
set the parameters and half-baked atomic state tracking underneath.
While this transition is going we're using the transitional plane
helpers to update the atomic side (drm_plane_helper_disable/update
and friends), i.e. plane->state->fb. Since the state structure owns
the fb those functions take care of that themselves.The legacy state (specifically crtc->primary->fb) is still managed
by the old code (and mostly by the drm core), with the fb reference
counting done by callers (core drm for the ioctl or the i915 load
detect code). The relevant commit iscommit ea2c67bb4affa84080c616920f3899f123786e56
Author: Matt Roper
Date: Tue Dec 23 10:41:52 2014 -0800drm/i915: Move to atomic plane helpers (v9)
- drm_plane_helper_disable has special code to handle multiple calls
in a row - it checks plane->crtc == NULL and bails out. This is to
match the proper atomic implementation which needs the crtc to get
at the implied locking context atomic updates always need. Seecommit acf24a395c5a9290189b080383564437101d411c
Author: Daniel Vetter
Date: Tue Jul 29 15:33:05 2014 +0200drm/plane-helper: transitional atomic plane helpers
- The universal plane code split out the implicit primary plane from
the CRTC into it's own full-blown drm_plane object. As part of that
the setcrtc ioctl (which updated both the crtc mode and primary
plane) learned to set crtc->primary->crtc on modeset to make sure
the plane->crtc assignments statate up to date incommit e13161af80c185ecd8dc4641d0f5df58f9e3e0af
Author: Matt Roper
Date: Tue Apr 1 15:22:38 2014 -0700drm: Add drm_crtc_init_with_planes() (v2)
Unfortunately we've forgotten to update the load detect code. Which
wasn't a problem since the load detect modeset is temporary and
always undone before we drop the locks.- Finally there is a organically grown history (i.e. don't ask) around
who sets the legacy plane->fb for the various driver entry points.
Originally updating that was the drivers duty, but for almost all
places we've moved that (plus updating the refcounts) into the core.
Again the exception is the load detect code.Taking all together the following happens:
- The load detect code doesn't set crtc->primary->crtc. This is only
really an issue on crtcs never before used or when userspace
explicitly disabled the primary plane.- The plane helper glue code short-circuits because of that and leaves
a non-NULL fb behind in plane->state->fb and plane->fb. The state
fb isn't a real problem (it's properly refcounted on its own), it's
just the canary.- Load detect code drops the reference for that fb, but doesn't set
plane->fb = NULL. This is ok since it's still living in that old
world where drivers had to clear the pointer but the core/callers
handled the refcounting.- On the next modeset the drm core notices plane->fb and takes care of
refcounting it properly by doing another unref. This drops the
refcount to zero, leaving state->plane now pointing at freed memory.- intel_plane_duplicate_state still assume it owns a reference to that
very state->fb and bad things start to happen.Fix this all by applying the same duct-tape as for the legacy setcrtc
ioctl code and set crtc->primary->crtc properly.Cc: Matt Roper
Cc: Paul Bolle
Cc: Rob Clark
Cc: Paulo Zanoni
Cc: Sean Paul
Cc: Matt Roper
Reported-and-tested-by: Linus Torvalds
Reported-by: Paul Bolle
Signed-off-by: Daniel Vetter
Signed-off-by: Linus Torvalds
03 Mar, 2015
4 commits
-
Pull GPIO fixes from Linus Walleij:
"Two GPIO fixes:- Fix a translation problem in of_get_named_gpiod_flags()
- Fix a long standing container_of() mistake in the TPS65912 driver"
* tag 'gpio-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: tps65912: fix wrong container_of arguments
gpiolib: of: allow of_gpiochip_find_and_xlate to find more than one chip per node -
…t/evalenti/linux-soc-thermal
Pull thermal management fixes from Eduardo Valentin:
"Specifics:- Several fixes in tmon tool.
- Fixes in intel int340x for _ART and _TRT tables.
- Add id for Avoton SoC into powerclamp driver.
- Fixes in RCAR thermal driver to remove race conditions and fix fail
path- Fixes in TI thermal driver: removal of unnecessary code and build
fix if !CONFIG_PM_SLEEP- Cleanups in exynos thermal driver
- Add stubs for include/linux/thermal.h. Now drivers using thermal
calls but that also work without CONFIG_THERMAL will be able to
compile for systems that don't care about thermal.Note: I am sending this pull on Rui's behalf while he fixes issues in
his Linux box"* 'fixes-for-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal: int340x_thermal: Ignore missing _ART, _TRT tables
thermal/intel_powerclamp: add id for Avoton SoC
tools/thermal: tmon: silence 'set but not used' warnings
tools/thermal: tmon: use pkg-config to determine library dependencies
tools/thermal: tmon: support cross-compiling
tools/thermal: tmon: add .gitignore
tools/thermal: tmon: fixup tui windowing calculations
tools/thermal: tmon: tui: don't hard-code dialog window size assumptions
tools/thermal: tmon: add min/max macros
tools/thermal: tmon: add --target-temp parameter
thermal: exynos: Clean-up code to use oneline entry for exynos compatible table
thermal: rcar: Make error and remove paths symmetrical with init
thermal: rcar: Fix race condition between init and interrupt
thermal: Introduce dummy functions when thermal is not defined
ti-soc-thermal: Delete an unnecessary check before the function call "cpufreq_cooling_unregister"
thermal: ti-soc-thermal: bandgap: Fix build warning if !CONFIG_PM_SLEEP -
Pull md fixes from Neil Brown:
"Three md fixes:- fix a read-balance problem that was reported 2 years ago, but that
I never noticed the report :-(- fix for rare RAID6 problem causing incorrect bitmap updates when
two devices fail.- add __ATTR_PREALLOC annotation now that it is possible"
* tag 'md/4.0-fixes' of git://neil.brown.name/md:
md: mark some attributes as pre-alloc
raid5: check faulty flag for array status during recovery.
md/raid1: fix read balance when a drive is write-mostly. -
Pull arch/metag fix from James Hogan:
"This is just a single patch to fix the KSTK_EIP() and KSTK_ESP()
macros for metag which have always been erronously returning the PC
and stack pointer of the task's kernel context rather than from its
user context saved at entry from userland into the kernel, which
affects the contents of /proc//maps and /proc//stat"* tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix KSTK_EIP() and KSTK_ESP() macros
02 Mar, 2015
5 commits
-
Pull x86 fixes from Ingo Molnar:
"A CR4-shadow 32-bit init fix, plus two typo fixes"* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
x86/platform/intel-mid: Fix trivial printk message typo in intel_mid_arch_setup()
x86/cpu/intel: Fix trivial typo in intel_tlb_table[] -
Pull timer fixes from Ingo Molnar:
"Three clockevents/clocksource driver fixes"* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: pxa: Fix section mismatch
clocksource: mtk: Fix race conditions in probe code
clockevents: asm9260: Fix compilation error with sparc/sparc64 allyesconfig -
Pull perf fixes from Ingo Molnar:
"Two kprobes fixes and a handful of tooling fixes"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Make sparc64 arch point to sparc
perf symbols: Define EM_AARCH64 for older OSes
perf top: Fix SIGBUS on sparc64
perf tools: Fix probing for PERF_FLAG_FD_CLOEXEC flag
perf tools: Fix pthread_attr_setaffinity_np build error
perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check
perf bench: Fix order of arguments to memcpy_alloc_mem
kprobes/x86: Check for invalid ftrace location in __recover_probed_insn()
kprobes/x86: Use 5-byte NOP when the code might be modified by ftrace -
Pull locking fix from Ingo Molnar:
"An rtmutex deadlock path fixlet"* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rtmutex: Set state back to running on error -
…it/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- pthread_attr_setaffinity_np() feature detection build fixes (Adrian Hunter, Josh Boyer)
- Fix probing for PERF_FLAG_FD_CLOEXEC flag (Adrian Hunter)
- Fix order of arguments to memcpy_alloc_mem in 'perf bench' (Bruce Merry)
- Sparc64 and Aarch64 build and segfault fixes (David Ahern)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
01 Mar, 2015
18 commits
-
The "usual" path is:
- rt_mutex_slowlock()
- set_current_state()
- task_blocks_on_rt_mutex() (ret 0)
- __rt_mutex_slowlock()
- sleep or not but do return with __set_current_state(TASK_RUNNING)
- back to caller.In the early error case where task_blocks_on_rt_mutex() return
-EDEADLK we never change the task's state back to RUNNING. I
assume this is intended. Without this change after ww_mutex
using rt_mutex the selftest passes but later I get plenty of:| bad: scheduling from the idle thread!
backtraces.
Signed-off-by: Sebastian Andrzej Siewior
Acked-by: Mike Galbraith
Cc: Linus Torvalds
Cc: Maarten Lankhorst
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Fixes: afffc6c1805d ("locking/rtmutex: Optimize setting task running after being blocked")
Link: http://lkml.kernel.org/r/1425056229-22326-4-git-send-email-bigeasy@linutronix.de
Signed-off-by: Ingo Molnar -
Pull drm fixes from Dave Airlie:
"Just general fixes: radeon, i915, atmel, tegra, amdkfd and one core
fix"* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
drm: atmel-hlcdc: remove clock polarity from crtc driver
drm/radeon: only enable DP audio if the monitor supports it
drm/radeon: fix atom aux payload size check for writes (v2)
drm/radeon: fix 1 RB harvest config setup for TN/RL
drm/radeon: enable SRBM timeout interrupt on EG/NI
drm/radeon: enable SRBM timeout interrupt on SI
drm/radeon: enable SRBM timeout interrupt on CIK v2
drm/radeon: dump full IB if we hit a packet error
drm/radeon: disable mclk switching with 120hz+ monitors
drm/radeon: use drm_mode_vrefresh() rather than mode->vrefresh
drm/radeon: enable native backlight control on old macs
drm/i915: Fix frontbuffer false positve.
drm/i915: Align initial plane backing objects correctly
drm/i915: avoid processing spurious/shared interrupts in low-power states
drm/i915: Check obj->vma_list under the struct_mutex
drm/i915: Fix a use after free, and unbalanced refcounting
drm: atmel-hlcdc: remove useless pm_runtime_put_sync in probe
drm: atmel-hlcdc: reset layer A2Q and UPDATE bits when disabling it
drm: Fix deadlock due to getconnector locking changes
drm/i915: Dell Chromebook 11 has PWM backlight
... -
Pull block layer fixes from Jens Axboe:
"Two smaller fixes for this cycle:- A fixup from Keith so that NVMe compiles without BLK_INTEGRITY,
basically just moving the code around appropriately.- A fixup for shm, fixing an oops in shmem_mapping() for mapping with
no inode. From Sasha"[ The shmem fix doesn't look block-layer-related, but fixes a bug that
happened due to the backing_dev_info removal.. - Linus ]* 'for-linus' of git://git.kernel.dk/linux-block:
mm: shmem: check for mapping owner before dereferencing
NVMe: Fix for BLK_DEV_INTEGRITY not set -
Pull xfs fixes from Dave Chinner:
"These are fixes for regressions/bugs introduced in the 4.0 merge cycle
and problems discovered during the merge window that need to be pushed
back to stable kernels ASAP.This contains:
- ensure quota type is reset in on-disk dquots
- fix missing partial EOF block data flush on truncate extension
- fix transaction leak in error handling for new pnfs block layout
support
- add missing target_ip check to RENAME_EXCHANGE"* tag 'xfs-for-linus-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: cancel failed transaction in xfs_fs_commit_blocks()
xfs: Ensure we have target_ip for RENAME_EXCHANGE
xfs: ensure truncate forces zeroed blocks to disk
xfs: Fix quota type in quota structures when reusing quota file -
Merge misc fixes from Andrew Morton:
"13 fixes"* emailed patches from Andrew Morton :
mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
mm: page_alloc: revert inadvertent !__GFP_FS retry behavior change
kernel/sys.c: fix UNAME26 for 4.0
mm: memcontrol: use "max" instead of "infinity" in control knobs
zram: use proper type to update max_used_pages
drivers/rtc/rtc-ds1685.c: fix conditional in ds1685_rtc_sysfs_time_regs_{show,store}
nilfs2: fix potential memory overrun on inode
scripts/gdb: add empty package initialization script
rtc: ds1685: remove superfluous checks for out-of-range u8 values
rtc: ds1685: fix ds1685_rtc_alarm_irq_enable build error
memcg: fix low limit calculation
mm/nommu: fix memory leak
ocfs2: update web page + git tree in documentation -
Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded. Usually, these defines are provided by
and .But some architectures fold page table levels in a custom way. They
need to define these macros themself. This patch adds missing defines.The patch fixes mm->nr_pmds underflow and eliminates dead __pmd_alloc()
and __pud_alloc() on architectures without these page table levels.Signed-off-by: Kirill A. Shutemov
Cc: Aaro Koskinen
Cc: David Howells
Cc: Geert Uytterhoeven
Cc: Heiko Carstens
Cc: Helge Deller
Cc: "James E.J. Bottomley"
Cc: Koichi Yasutake
Cc: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Historically, !__GFP_FS allocations were not allowed to invoke the OOM
killer once reclaim had failed, but nevertheless kept looping in the
allocator.Commit 9879de7373fc ("mm: page_alloc: embed OOM killing naturally into
allocation slowpath"), which should have been a simple cleanup patch,
accidentally changed the behavior to aborting the allocation at that
point. This creates problems with filesystem callers (?) that currently
rely on the allocator waiting for other tasks to intervene.Revert the behavior as it shouldn't have been changed as part of a
cleanup patch.Fixes: 9879de7373fc ("mm: page_alloc: embed OOM killing naturally into allocation slowpath")
Signed-off-by: Johannes Weiner
Acked-by: Michal Hocko
Reported-by: Tetsuo Handa
Cc: Theodore Ts'o
Cc: Dave Chinner
Acked-by: David Rientjes
Cc: Oleg Nesterov
Cc: Mel Gorman
Cc: [3.19.x]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There's a uname workaround for broken userspace which can't handle kernel
versions of 3.x. Update it for 4.x.Signed-off-by: Jon DeVree
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The memcg control knobs indicate the highest possible value using the
symbolic name "infinity", which is long and awkward to type.Switch to the string "max", which is just as descriptive but shorter and
sweeter.This changes a user interface, so do it before the release and before
the development flag is dropped from the default hierarchy.Signed-off-by: Johannes Weiner
Cc: Michal Hocko
Cc: Tejun Heo
Cc: Vladimir Davydov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
max_used_pages is defined as atomic_long_t so we need to use unsigned
long to keep temporary value for it rather than int which is smaller
than unsigned long in a 64 bit system.Signed-off-by: Joonsoo Kim
Cc: Minchan Kim
Cc: Jerome Marchand
Cc: Nitin Gupta
Cc: Sergey Senozhatsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix a conditional statement checking for NULL in both
ds1685_rtc_sysfs_time_regs_show and ds1685_rtc_sysfs_time_regs_store
that was using a logical AND when it should be using a logical OR so
that we fail out of the function properly if the condition ever
evaluates to true.Fixes: aaaf5fbf56f1 ("rtc: add driver for DS1685 family of real time clocks")
Signed-off-by: Joshua Kinard
Reported-by: Dan Carpenter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Each inode of nilfs2 stores a root node of a b-tree, and it turned out to
have a memory overrun issue:Each b-tree node of nilfs2 stores a set of key-value pairs and the number
of them (in "bn_nchildren" member of nilfs_btree_node struct), as well as
a few other "bn_*" members.Since the value of "bn_nchildren" is used for operations on the key-values
within the b-tree node, it can cause memory access overrun if a large
number is incorrectly set to "bn_nchildren".For instance, nilfs_btree_node_lookup() function determines the range of
binary search with it, and too large "bn_nchildren" leads
nilfs_btree_node_get_key() in that function to overrun.As for intermediate b-tree nodes, this is prevented by a sanity check
performed when each node is read from a drive, however, no sanity check
has been done for root nodes stored in inodes.This patch fixes the issue by adding missing sanity check against b-tree
root nodes so that it's called when on-memory inodes are read from ifile,
inode metadata file.Signed-off-by: Ryusuke Konishi
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This got lost during the initial merge process: Python requires an
__init__.py script, even if empty, in order to accept a directory as
package. Add it, this time as a non-empty file.Signed-off-by: Jan Kiszka
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
drivers/rtc/rtc-ds1685.c: In function `ds1685_rtc_read_alarm':
drivers/rtc/rtc-ds1685.c:402: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:409: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:416: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c: In function `ds1685_rtc_set_alarm':
drivers/rtc/rtc-ds1685.c:475: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:478: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:481: warning: comparison is always true due to limited range of data typeu8 cannot contain a value larger than 0xff, hence drop the checks.
Wrapping the checks in unlikely() indicated some sense of humor, though ;-)Signed-off-by: Geert Uytterhoeven
Acked-by: Joshua Kinard
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The newly added ds1685 driver causes a build error when enabled without
CONFIG_RTC_INTF_DEV:drivers/rtc/rtc-ds1685.c:919:22: error: 'ds1685_rtc_alarm_irq_enable' undeclared here (not in a function)
.alarm_irq_enable = ds1685_rtc_alarm_irq_enable,Apparently the driver was incorrectly changed to reflect the interface
change from 16380c153a69c ("RTC: Convert rtc drivers to use the
alarm_irq_enable method"), which removed the respective #ifdef from all
other rtc drivers.This does the same change that was merged for the other drivers before and
removes the #ifdef, allowing the interrupts to be enabled through the
in-kernel rtc interface independent of the existence of /dev/rtc.Fixes: aaaf5fbf56f ("rtc: add driver for DS1685 family of real time clocks")
Signed-off-by: Arnd Bergmann
Acked-by: Joshua Kinard
Cc: Ralf Baechle
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A memcg is considered low limited even when the current usage is equal to
the low limit. This leads to interesting side effects e.g.
groups/hierarchies with no memory accounted are considered protected and
so the reclaim will emit MEMCG_LOW event when encountering them.Another and much bigger issue was reported by Joonsoo Kim. He has hit a
NULL ptr dereference with the legacy cgroup API which even doesn't have
low limit exposed. The limit is 0 by default but the initial check fails
for memcg with 0 consumption and parent_mem_cgroup() would return NULL if
use_hierarchy is 0 and so page_counter_read would try to dereference NULL.I suppose that the current implementation is just an overlook because the
documentation in Documentation/cgroups/unified-hierarchy.txt says:"The memory.low boundary on the other hand is a top-down allocated
reserve. A cgroup enjoys reclaim protection when it and all its
ancestors are below their low boundaries"Fix the usage and the low limit comparision in mem_cgroup_low accordingly.
Fixes: 241994ed8649 (mm: memcontrol: default hierarchy interface for memory)
Reported-by: Joonsoo Kim
Signed-off-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Maxime reported the following memory leak regression due to commit
dbc8358c7237 ("mm/nommu: use alloc_pages_exact() rather than its own
implementation").On v3.19, I am facing a memory leak. Each time I run a command one page
is lost. Here an example with busybox's free command:/ # free
total used free shared buffers cached
Mem: 7928 1972 5956 0 0 492
-/+ buffers/cache: 1480 6448
/ # free
total used free shared buffers cached
Mem: 7928 1976 5952 0 0 492
-/+ buffers/cache: 1484 6444
/ # free
total used free shared buffers cached
Mem: 7928 1980 5948 0 0 492
-/+ buffers/cache: 1488 6440
/ # free
total used free shared buffers cached
Mem: 7928 1984 5944 0 0 492
-/+ buffers/cache: 1492 6436
/ # free
total used free shared buffers cached
Mem: 7928 1988 5940 0 0 492
-/+ buffers/cache: 1496 6432At some point, the system fails to sastisfy 256KB allocations:
free: page allocation failure: order:6, mode:0xd0
CPU: 0 PID: 67 Comm: free Not tainted 3.19.0-05389-gacf2cf1-dirty #64
Hardware name: STM32 (Device Tree Support)
show_stack+0xb/0xc
warn_alloc_failed+0x97/0xbc
__alloc_pages_nodemask+0x295/0x35c
__get_free_pages+0xb/0x24
alloc_pages_exact+0x19/0x24
do_mmap_pgoff+0x423/0x658
vm_mmap_pgoff+0x3f/0x4e
load_flat_file+0x20d/0x4f8
load_flat_binary+0x3f/0x26c
search_binary_handler+0x51/0xe4
do_execveat_common+0x271/0x35c
do_execve+0x19/0x1c
ret_fast_syscall+0x1/0x4a
Mem-info:
Normal per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:0 isolated_file:0
unevictable:123 dirty:0 writeback:0 unstable:0
free:1515 slab_reclaimable:17 slab_unreclaimable:139
mapped:0 shmem:0 pagetables:0 bounce:0
free_cma:0
Normal free:6060kB min:352kB low:440kB high:528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:492kB isolated(anon):0ks
lowmem_reserve[]: 0 0
Normal: 23*4kB (U) 22*8kB (U) 24*16kB (U) 23*32kB (U) 23*64kB (U) 23*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 6060kB
123 total pagecache pages
2048 pages of RAM
1538 free pages
66 reserved pages
109 slab pages
-46 pages shared
0 pages swap cached
nommu: Allocation of length 221184 from process 67 (free) failed
Normal per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:0 isolated_file:0
unevictable:123 dirty:0 writeback:0 unstable:0
free:1515 slab_reclaimable:17 slab_unreclaimable:139
mapped:0 shmem:0 pagetables:0 bounce:0
free_cma:0
Normal free:6060kB min:352kB low:440kB high:528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:492kB isolated(anon):0ks
lowmem_reserve[]: 0 0
Normal: 23*4kB (U) 22*8kB (U) 24*16kB (U) 23*32kB (U) 23*64kB (U) 23*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 6060kB
123 total pagecache pages
Unable to allocate RAM for process text/data, errno 12 SEGVThis problem happens because we allocate ordered page through
__get_free_pages() in do_mmap_private() in some cases and we try to free
individual pages rather than ordered page in free_page_series(). In
this case, freeing pages whose refcount is not 0 won't be freed to the
page allocator so memory leak happens.To fix the problem, this patch changes __get_free_pages() to
alloc_pages_exact() since alloc_pages_exact() returns
physically-contiguous pages but each pages are refcounted.Fixes: dbc8358c7237 ("mm/nommu: use alloc_pages_exact() rather than its own implementation").
Reported-by: Maxime Coquelin
Tested-by: Maxime Coquelin
Signed-off-by: Joonsoo Kim
Cc: [3.19]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We (the Ocfs2 project) recently moved the location of our ocfs2-tools
git tree and project web page. The pertinent discussion can be seen
here:https://oss.oracle.com/pipermail/ocfs2-devel/2015-February/010579.html
The following patch updates the Ocfs2 documentation in MAINTAINERS,
ocfs2.txt, and dlmfs.txt. I added our new official web page, changed
the location of our tools git tree and removed the link to Joel's
ancient kernel git tree - Andrew has handled our patches for a while
now.Signed-off-by: Mark Fasheh
Cc: Joel Becker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Feb, 2015
11 commits
-
Commit:
1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4cccdc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt
Acked-by: Andy Lutomirski
Cc: Peter Zijlstra (Intel)
Cc: Linus Torvalds
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar -
Signed-off-by: Ingo Molnar
-
It is possible that _ART/_TRT tables are missing or have errors.
Ignore those failures, as INT3400 thermal zone is still required
for _OSC or mode switch.Signed-off-by: Srinivas Pandruvada
Signed-off-by: Zhang Rui -
Enable Intel Powerclamp driver on Atom* Processor C2000 Product
Family for Microservers (Avoton). Avoton - SoCs for micro-servers
has package C-states which can be used for idle injection.Reported-by: Jose Navarro
Suggested-by: Jacob Pan
Tested-by: Jose Carlos Venegas Munoz
Signed-off-by: Miguel Bernal Marin
Signed-off-by: Zhang Rui -
gcc complains about the 'cols' variable being unused. This is
unavoidable, given the ncurses getmaxyx() macro-based API, which wants
to assign to a variable directly, even when we're not going to use it.Warning:
gcc -O1 -Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -fstack-protector -D VERSION=\"1.0\" -c -o tui.o tui.c
tui.c: In function ‘show_dialogue’:
tui.c:288:12: warning: variable ‘cols’ set but not used [-Wunused-but-set-variable]
int rows, cols;
^So, add a hack to get rid of that warning.
Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui -
Some distros (e.g., Arch Linux) don't package the tinfo library
separately from ncurses, so don't unconditionally include it. Instead,
use pkg-config.The $(STATIC) ugliness is to handle the reported build case from commit
6b533269fb25 ("tools/thermal: tmon: fix compilation errors when building
statically"), where a developer wants to be able to build with:make LDFLAGS=-static
which requires an additional pkg-config flag.
Finally, support a lowest common denominator fallback (-lpanel
-lncurses) for build systems that don't have pkg-config entries for
ncurses.Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui -
We might want to prepare CFLAGS outside of this Makefile, so don't
overwrite its initial value.Then, support $(CROSS_COMPILE), so we can use a cross-compile toolchain.
Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui -
Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui -
The number of rows in the dialog vary according to the number of cooling
devices. However, some of the windowing computations were assuming a
fixed number of rows. This computation is OK when we have between 4 and
9 cooling devices (and they wrap to the next column), but with fewer
devices, we end up printing off the end of the window.This unifies the row computation into a single function and uses that
throughout the TUI code. This also accounts for increasing the number of
rows when there are more than 9 total cooling devices.Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui -
We can use the ncurses API to get the number of rows.
Signed-off-by: Brian Norris
Acked-by: Jacob Pan
Reviewed-by: Florian Fainelli
Signed-off-by: Zhang Rui
