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For the link state interrupt, we used a dummy non-threaded
irq handler, which had the same implementation as the generic
irq_default_primary_handler() function.
Give up on using our own irq handler and let the kernel use
the generic one instead.
Signed-off-by: Ioana Radulescu <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch check: PARENTHESIS_ALIGNMENT
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch warning: BRACES
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch error: CODE_IDENT
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch error: ASSIGN_IN_IF by adding an inner if in the else
path, this also avoids calling vchan_find_desc when not needed.
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch error: OPEN_BRACE
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch error: SPACING
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fixes checkpatch error: POINTER_LOCATION
Signed-off-by: Christian Lütke-Stetzkamp <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The handling of hostif_infrastructure_set_request_t and
hostif_infrastructure_set2_request_t is identical, with the exception
of the event type value. Merge the two structs so they can be handled
by a single function ('hostif_infrastructure_set_request').
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Some of the code for reading IEs is replicated multiple times in the
switch statement for get_ap_information(). Factor that code out into
read_ie().
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Instead of using memcmp() to directly compare BSSIDs, use
ether_addr_equal() from 'linux/etherdevice.h'.
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The AUTH_TYPE_OPEN_SYSTEM and AUTH_TYPE_SHARED_KEY #define lines
are duplicated in ks_hostif.h. Replace them both with one set of
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Most of the request structures defined in ks_hostif.h have common
members:
* __le16 phy_type;
* __le16 cts_mode;
* __le16 scan_type;
* __le16 capability;
* struct rate_set16_t rate_set;
Factor out these members into a common substructure of type
'hostif_request_t'. This allows a large portion of the request
initialization code in ks_hostif.c to be factored out into the
'init_request' function.
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There are several instances where comments are spaced so far to the
right they cause the line to go over the 80 character limit. Move
these comments to above the statements they describe instead.
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no reason for comment describing the BSSID check for loop
to be spaced so far to the right. Move it above the for loop.
Signed-off-by: Quytelda Kahja <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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2 gotos in error handling paths branch to the wrong label.
Fix it.
Signed-off-by: Christophe JAILLET <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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cb_pcidas64.c
This is a patch to the cb_pcidas64.c file that fixes up a multiple line
dereference warning found by the checkpatch.pl tool.
Signed-off-by: Jian Zhang <[email protected]>
Reviewed-by: Ian Abbott <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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`external_ai_queue_in_use()` is supposed to return 1 if the external
channel sequencer is in use by an AI command, else return 0. If the
"read" subdevice (which is the AI subdevice) is not busy then no AI
command is running so the external channel sequencer is not in use, so
the function should return 0. Unfortunately, the function's "read"
subdevice busy test is inverted, so the function always returns 0 when
the "read" subdevice is busy. Worse, if the "read" subdevice is
not busy the subsequent call to `use_internal_queue_6xxx()` results in a
null pointer dereference if a previous AI command used a channel list
with a length greater than 1.
Signed-off-by: Ian Abbott <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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external_ai_queue_in_use()"
This reverts commit f5f3a2c6569e ("staging: comedi: cb_pcidas64: change
params to external_ai_queue_in_use()"). The
`external_ai_queue_in_use()` was being called from `ao_cmd()` with
pointers to the "write" subdevice and AO command, but is supposed to
check whether the external AI queue is currently in use by the "read"
subdevice and AI command. In fact, the return value always indicated
that the external AI queue was not in use in this case (because the AO
command's channel list is sequential), so was fairly useless. (However,
even before the reverted commit, the logic in
`external_ai_queue_in_use()` was wrong. That will be corrected in a
subsequent commit.)
Signed-off-by: Ian Abbott <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The userspace support for fsl-mc requires a fsl_mc_allocator
cleanup function. Add the needed function.
Signed-off-by: Ioana Ciornei <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The "struct mc_command" is a very generic name for a global
kernel structure. Change its name in "struct fsl_mc_command".
Signed-off-by: Ioana Ciornei <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Merge misc fixes from Andrew Morton:
"13 fixes"
* emailed patches from Andrew Morton <[email protected]>:
mm, thp: do not cause memcg oom for thp
mm/vmscan: wake up flushers for legacy cgroups too
Revert "mm: page_alloc: skip over regions of invalid pfns where possible"
mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
mm/thp: do not wait for lock_page() in deferred_split_scan()
mm/khugepaged.c: convert VM_BUG_ON() to collapse fail
x86/mm: implement free pmd/pte page interfaces
mm/vmalloc: add interfaces to free unmapped page table
h8300: remove extraneous __BIG_ENDIAN definition
hugetlbfs: check for pgoff value overflow
lockdep: fix fs_reclaim warning
MAINTAINERS: update Mark Fasheh's e-mail
mm/mempolicy.c: avoid use uninitialized preferred_node
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"Two regression fixes, two bug fixes for older issues, two fixes for
new functionality added this cycle that have userspace ABI concerns,
and a small cleanup. These have appeared in a linux-next release and
have a build success report from the 0day robot.
* The 4.16 rework of altmap handling led to some configurations
leaking page table allocations due to freeing from the altmap
reservation rather than the page allocator.
The impact without the fix is leaked memory and a WARN() message
when tearing down libnvdimm namespaces. The rework also missed a
place where error handling code needed to be removed that can lead
to a crash if devm_memremap_pages() fails.
* acpi_map_pxm_to_node() had a latent bug whereby it could
misidentify the closest online node to a given proximity domain.
* Block integrity handling was reworked several kernels back to allow
calling add_disk() after setting up the integrity profile.
The nd_btt and nd_blk drivers are just now catching up to fix
automatic partition detection at driver load time.
* The new peristence_domain attribute, a platform indicator of
whether cpu caches are powerfail protected for example, is meant to
be a single value enum and not a set of flags.
This oversight was caught while reviewing new userspace code in
libndctl to communicate the attribute.
Fix this new enabling up so that we are not stuck with an unwanted
userspace ABI"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, nfit: fix persistence domain reporting
libnvdimm, region: hide persistence_domain when unknown
acpi, numa: fix pxm to online numa node associations
x86, memremap: fix altmap accounting at free
libnvdimm: remove redundant assignment to pointer 'dev'
libnvdimm, {btt, blk}: do integrity setup before add_disk()
kernel/memremap: Remove stale devres_free() call
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git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A bunch of fixes all over the place (core, i915, amdgpu, imx, sun4i,
ast, tegra, vmwgfx), nothing too serious or worrying at this stage.
- one uapi fix to stop multi-planar images with getfb
- Sun4i error path and clock fixes
- udl driver mmap offset fix
- i915 DP MST and GPU reset fixes
- vmwgfx mutex and black screen fixes
- imx array underflow fix and vblank fix
- amdgpu: display fixes
- exynos devicetree fix
- ast mode fix"
* tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux: (29 commits)
drm/ast: Fixed 1280x800 Display Issue
drm: udl: Properly check framebuffer mmap offsets
drm/i915: Specify which engines to reset following semaphore/event lockups
drm/vmwgfx: Fix a destoy-while-held mutex problem.
drm/vmwgfx: Fix black screen and device errors when running without fbdev
drm: Reject getfb for multi-plane framebuffers
drm/amd/display: Add one to EDID's audio channel count when passing to DC
drm/amd/display: We shouldn't set format_default on plane as atomic driver
drm/amd/display: Fix FMT truncation programming
drm/amd/display: Allow truncation to 10 bits
drm/sun4i: hdmi: Fix another error handling path in 'sun4i_hdmi_bind()'
drm/sun4i: hdmi: Fix an error handling path in 'sun4i_hdmi_bind()'
drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
drm/amd/display: fix dereferencing possible ERR_PTR()
drm/amd/display: Refine disable VGA
drm/tegra: Shutdown on driver unbind
drm/tegra: dsi: Don't disable regulator on ->exit()
drm/tegra: dc: Detach IOMMU group from domain only once
dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
drm/imx: move arming of the vblank event to atomic_flush
...
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Commit 2516035499b9 ("mm, thp: remove __GFP_NORETRY from khugepaged and
madvised allocations") changed the page allocator to no longer detect
thp allocations based on __GFP_NORETRY.
It did not, however, modify the mem cgroup try_charge() path to avoid
oom kill for either khugepaged collapsing or thp faulting. It is never
expected to oom kill a process to allocate a hugepage for thp; reclaim
is governed by the thp defrag mode and MADV_HUGEPAGE, but allocations
(and charging) should fallback instead of oom killing processes.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 2516035499b9 ("mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocations")
Signed-off-by: David Rientjes <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Johannes Weiner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Commit 726d061fbd36 ("mm: vmscan: kick flushers when we encounter dirty
pages on the LRU") added flusher invocation to shrink_inactive_list()
when many dirty pages on the LRU are encountered.
However, shrink_inactive_list() doesn't wake up flushers for legacy
cgroup reclaim, so the next commit bbef938429f5 ("mm: vmscan: remove old
flusher wakeup from direct reclaim path") removed the only source of
flusher's wake up in legacy mem cgroup reclaim path.
This leads to premature OOM if there is too many dirty pages in cgroup:
# mkdir /sys/fs/cgroup/memory/test
# echo $$ > /sys/fs/cgroup/memory/test/tasks
# echo 50M > /sys/fs/cgroup/memory/test/memory.limit_in_bytes
# dd if=/dev/zero of=tmp_file bs=1M count=100
Killed
dd invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0
Call Trace:
dump_stack+0x46/0x65
dump_header+0x6b/0x2ac
oom_kill_process+0x21c/0x4a0
out_of_memory+0x2a5/0x4b0
mem_cgroup_out_of_memory+0x3b/0x60
mem_cgroup_oom_synchronize+0x2ed/0x330
pagefault_out_of_memory+0x24/0x54
__do_page_fault+0x521/0x540
page_fault+0x45/0x50
Task in /test killed as a result of limit of /test
memory: usage 51200kB, limit 51200kB, failcnt 73
memory+swap: usage 51200kB, limit 9007199254740988kB, failcnt 0
kmem: usage 296kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /test: cache:49632KB rss:1056KB rss_huge:0KB shmem:0KB
mapped_file:0KB dirty:49500KB writeback:0KB swap:0KB inactive_anon:0KB
active_anon:1168KB inactive_file:24760KB active_file:24960KB unevictable:0KB
Memory cgroup out of memory: Kill process 3861 (bash) score 88 or sacrifice child
Killed process 3876 (dd) total-vm:8484kB, anon-rss:1052kB, file-rss:1720kB, shmem-rss:0kB
oom_reaper: reaped process 3876 (dd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Wake up flushers in legacy cgroup reclaim too.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: bbef938429f5 ("mm: vmscan: remove old flusher wakeup from direct reclaim path")
Signed-off-by: Andrey Ryabinin <[email protected]>
Tested-by: Shakeel Butt <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This reverts commit b92df1de5d28 ("mm: page_alloc: skip over regions of
invalid pfns where possible"). The commit is meant to be a boot init
speed up skipping the loop in memmap_init_zone() for invalid pfns.
But given some specific memory mapping on x86_64 (or more generally
theoretically anywhere but on arm with CONFIG_HAVE_ARCH_PFN_VALID) the
implementation also skips valid pfns which is plain wrong and causes
'kernel BUG at mm/page_alloc.c:1389!'
crash> log | grep -e BUG -e RIP -e Call.Trace -e move_freepages_block -e rmqueue -e freelist -A1
kernel BUG at mm/page_alloc.c:1389!
invalid opcode: 0000 [#1] SMP
--
RIP: 0010: move_freepages+0x15e/0x160
--
Call Trace:
move_freepages_block+0x73/0x80
__rmqueue+0x263/0x460
get_page_from_freelist+0x7e1/0x9e0
__alloc_pages_nodemask+0x176/0x420
--
crash> page_init_bug -v | grep RAM
<struct resource 0xffff88067fffd2f8> 1000 - 9bfff System RAM (620.00 KiB)
<struct resource 0xffff88067fffd3a0> 100000 - 430bffff System RAM ( 1.05 GiB = 1071.75 MiB = 1097472.00 KiB)
<struct resource 0xffff88067fffd410> 4b0c8000 - 4bf9cfff System RAM ( 14.83 MiB = 15188.00 KiB)
<struct resource 0xffff88067fffd480> 4bfac000 - 646b1fff System RAM (391.02 MiB = 400408.00 KiB)
<struct resource 0xffff88067fffd560> 7b788000 - 7b7fffff System RAM (480.00 KiB)
<struct resource 0xffff88067fffd640> 100000000 - 67fffffff System RAM ( 22.00 GiB)
crash> page_init_bug | head -6
<struct resource 0xffff88067fffd560> 7b788000 - 7b7fffff System RAM (480.00 KiB)
<struct page 0xffffea0001ede200> 1fffff00000000 0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32 4096 1048575
<struct page 0xffffea0001ede200> 505736 505344 <struct page 0xffffea0001ed8000> 505855 <struct page 0xffffea0001edffc0>
<struct page 0xffffea0001ed8000> 0 0 <struct pglist_data 0xffff88047ffd9000> 0 <struct zone 0xffff88047ffd9000> DMA 1 4095
<struct page 0xffffea0001edffc0> 1fffff00000400 0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32 4096 1048575
BUG, zones differ!
crash> kmem -p 77fff000 78000000 7b5ff000 7b600000 7b787000 7b788000
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
ffffea0001e00000 78000000 0 0 0 0
ffffea0001ed7fc0 7b5ff000 0 0 0 0
ffffea0001ed8000 7b600000 0 0 0 0 <<<<
ffffea0001ede1c0 7b787000 0 0 0 0
ffffea0001ede200 7b788000 0 0 1 1fffff00000000
Link: http://lkml.kernel.org/r/[email protected]
Fixes: b92df1de5d28 ("mm: page_alloc: skip over regions of invalid pfns where possible")
Signed-off-by: Daniel Vacek <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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shmem_unused_huge_shrink() gets called from reclaim path. Waiting for
page lock may lead to deadlock there.
There was a bug report that may be attributed to this:
http://lkml.kernel.org/r/[email protected]
Replace lock_page() with trylock_page() and skip the page if we failed
to lock it. We will get to the page on the next scan.
We can test for the PageTransHuge() outside the page lock as we only
need protection against splitting the page under us. Holding pin oni
the page is enough for this.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 779750d20b93 ("shmem: split huge pages beyond i_size under memory pressure")
Signed-off-by: Kirill A. Shutemov <[email protected]>
Reported-by: Eric Wheeler <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Tetsuo Handa <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: <[email protected]> [4.8+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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deferred_split_scan() gets called from reclaim path. Waiting for page
lock may lead to deadlock there.
Replace lock_page() with trylock_page() and skip the page if we failed
to lock it. We will get to the page on the next scan.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 9a982250f773 ("thp: introduce deferred_split_huge_page()")
Signed-off-by: Kirill A. Shutemov <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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khugepaged is not yet able to convert PTE-mapped huge pages back to PMD
mapped. We do not collapse such pages. See check
khugepaged_scan_pmd().
But if between khugepaged_scan_pmd() and __collapse_huge_page_isolate()
somebody managed to instantiate THP in the range and then split the PMD
back to PTEs we would have a problem --
VM_BUG_ON_PAGE(PageCompound(page)) will get triggered.
It's possible since we drop mmap_sem during collapse to re-take for
write.
Replace the VM_BUG_ON() with graceful collapse fail.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: b1caa957ae6d ("khugepaged: ignore pmd tables with THP mapped with ptes")
Signed-off-by: Kirill A. Shutemov <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Jerome Marchand <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Implement pud_free_pmd_page() and pmd_free_pte_page() on x86, which
clear a given pud/pmd entry and free up lower level page table(s).
The address range associated with the pud/pmd entry must have been
purged by INVLPG.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings")
Signed-off-by: Toshi Kani <[email protected]>
Reported-by: Lei Li <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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On architectures with CONFIG_HAVE_ARCH_HUGE_VMAP set, ioremap() may
create pud/pmd mappings. A kernel panic was observed on arm64 systems
with Cortex-A75 in the following steps as described by Hanjun Guo.
1. ioremap a 4K size, valid page table will build,
2. iounmap it, pte0 will set to 0;
3. ioremap the same address with 2M size, pgd/pmd is unchanged,
then set the a new value for pmd;
4. pte0 is leaked;
5. CPU may meet exception because the old pmd is still in TLB,
which will lead to kernel panic.
This panic is not reproducible on x86. INVLPG, called from iounmap,
purges all levels of entries associated with purged address on x86. x86
still has memory leak.
The patch changes the ioremap path to free unmapped page table(s) since
doing so in the unmap path has the following issues:
- The iounmap() path is shared with vunmap(). Since vmap() only
supports pte mappings, making vunmap() to free a pte page is an
overhead for regular vmap users as they do not need a pte page freed
up.
- Checking if all entries in a pte page are cleared in the unmap path
is racy, and serializing this check is expensive.
- The unmap path calls free_vmap_area_noflush() to do lazy TLB purges.
Clearing a pud/pmd entry before the lazy TLB purges needs extra TLB
purge.
Add two interfaces, pud_free_pmd_page() and pmd_free_pte_page(), which
clear a given pud/pmd entry and free up a page for the lower level
entries.
This patch implements their stub functions on x86 and arm64, which work
as workaround.
[[email protected]: fix typo in pmd_free_pte_page() stub]
Link: http://lkml.kernel.org/r/[email protected]
Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings")
Reported-by: Lei Li <[email protected]>
Signed-off-by: Toshi Kani <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Wang Xuefeng <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Hanjun Guo <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Chintan Pandya <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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A bugfix I did earlier caused a build regression on h8300, which defines
the __BIG_ENDIAN macro in a slightly different way than the generic
code:
arch/h8300/include/asm/byteorder.h:5:0: warning: "__BIG_ENDIAN" redefined
We don't need to define it here, as the same macro is already provided
by the linux/byteorder/big_endian.h, and that version does not conflict.
While this is a v4.16 regression, my earlier patch also got backported
to the 4.14 and 4.15 stable kernels, so we need the fixup there as well.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 101110f6271c ("Kbuild: always define endianess in kconfig.h")
Signed-off-by: Arnd Bergmann <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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A vma with vm_pgoff large enough to overflow a loff_t type when
converted to a byte offset can be passed via the remap_file_pages system
call. The hugetlbfs mmap routine uses the byte offset to calculate
reservations and file size.
A sequence such as:
mmap(0x20a00000, 0x600000, 0, 0x66033, -1, 0);
remap_file_pages(0x20a00000, 0x600000, 0, 0x20000000000000, 0);
will result in the following when task exits/file closed,
kernel BUG at mm/hugetlb.c:749!
Call Trace:
hugetlbfs_evict_inode+0x2f/0x40
evict+0xcb/0x190
__dentry_kill+0xcb/0x150
__fput+0x164/0x1e0
task_work_run+0x84/0xa0
exit_to_usermode_loop+0x7d/0x80
do_syscall_64+0x18b/0x190
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
The overflowed pgoff value causes hugetlbfs to try to set up a mapping
with a negative range (end < start) that leaves invalid state which
causes the BUG.
The previous overflow fix to this code was incomplete and did not take
the remap_file_pages system call into account.
[[email protected]: v3]
Link: http://lkml.kernel.org/r/[email protected]
[[email protected]: include mmdebug.h]
[[email protected]: fix -ve left shift count on sh]
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 045c7a3f53d9 ("hugetlbfs: fix offset overflow in hugetlbfs mmap")
Signed-off-by: Mike Kravetz <[email protected]>
Reported-by: Nic Losby <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: "Kirill A . Shutemov" <[email protected]>
Cc: Yisheng Xie <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Dave Jones reported fs_reclaim lockdep warnings.
============================================
WARNING: possible recursive locking detected
4.15.0-rc9-backup-debug+ #1 Not tainted
--------------------------------------------
sshd/24800 is trying to acquire lock:
(fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30
but task is already holding lock:
(fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(fs_reclaim);
lock(fs_reclaim);
*** DEADLOCK ***
May be due to missing lock nesting notation
2 locks held by sshd/24800:
#0: (sk_lock-AF_INET6){+.+.}, at: [<000000001a069652>] tcp_sendmsg+0x19/0x40
#1: (fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30
stack backtrace:
CPU: 3 PID: 24800 Comm: sshd Not tainted 4.15.0-rc9-backup-debug+ #1
Call Trace:
dump_stack+0xbc/0x13f
__lock_acquire+0xa09/0x2040
lock_acquire+0x12e/0x350
fs_reclaim_acquire.part.102+0x29/0x30
kmem_cache_alloc+0x3d/0x2c0
alloc_extent_state+0xa7/0x410
__clear_extent_bit+0x3ea/0x570
try_release_extent_mapping+0x21a/0x260
__btrfs_releasepage+0xb0/0x1c0
btrfs_releasepage+0x161/0x170
try_to_release_page+0x162/0x1c0
shrink_page_list+0x1d5a/0x2fb0
shrink_inactive_list+0x451/0x940
shrink_node_memcg.constprop.88+0x4c9/0x5e0
shrink_node+0x12d/0x260
try_to_free_pages+0x418/0xaf0
__alloc_pages_slowpath+0x976/0x1790
__alloc_pages_nodemask+0x52c/0x5c0
new_slab+0x374/0x3f0
___slab_alloc.constprop.81+0x47e/0x5a0
__slab_alloc.constprop.80+0x32/0x60
__kmalloc_track_caller+0x267/0x310
__kmalloc_reserve.isra.40+0x29/0x80
__alloc_skb+0xee/0x390
sk_stream_alloc_skb+0xb8/0x340
tcp_sendmsg_locked+0x8e6/0x1d30
tcp_sendmsg+0x27/0x40
inet_sendmsg+0xd0/0x310
sock_write_iter+0x17a/0x240
__vfs_write+0x2ab/0x380
vfs_write+0xfb/0x260
SyS_write+0xb6/0x140
do_syscall_64+0x1e5/0xc05
entry_SYSCALL64_slow_path+0x25/0x25
This warning is caused by commit d92a8cfcb37e ("locking/lockdep:
Rework FS_RECLAIM annotation") which replaced the use of
lockdep_{set,clear}_current_reclaim_state() in __perform_reclaim()
and lockdep_trace_alloc() in slab_pre_alloc_hook() with
fs_reclaim_acquire()/ fs_reclaim_release().
Since __kmalloc_reserve() from __alloc_skb() adds __GFP_NOMEMALLOC |
__GFP_NOWARN to gfp_mask, and all reclaim path simply propagates
__GFP_NOMEMALLOC, fs_reclaim_acquire() in slab_pre_alloc_hook() is
trying to grab the 'fake' lock again when __perform_reclaim() already
grabbed the 'fake' lock.
The
/* this guy won't enter reclaim */
if ((current->flags & PF_MEMALLOC) && !(gfp_mask & __GFP_NOMEMALLOC))
return false;
test which causes slab_pre_alloc_hook() to try to grab the 'fake' lock
was added by commit cf40bd16fdad ("lockdep: annotate reclaim context
(__GFP_NOFS)"). But that test is outdated because PF_MEMALLOC thread
won't enter reclaim regardless of __GFP_NOMEMALLOC after commit
341ce06f69ab ("page allocator: calculate the alloc_flags for allocation
only once") added the PF_MEMALLOC safeguard (
/* Avoid recursion of direct reclaim */
if (p->flags & PF_MEMALLOC)
goto nopage;
in __alloc_pages_slowpath()).
Thus, let's fix outdated test by removing __GFP_NOMEMALLOC test and
allow __need_fs_reclaim() to return false.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: d92a8cfcb37ecd13 ("locking/lockdep: Rework FS_RECLAIM annotation")
Signed-off-by: Tetsuo Handa <[email protected]>
Reported-by: Dave Jones <[email protected]>
Tested-by: Dave Jones <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Nikolay Borisov <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: <[email protected]> [4.14+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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I'd like to use my personal e-mail for Ocfs2 requests and review.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Mark Fasheh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Alexander reported a use of uninitialized memory in __mpol_equal(),
which is caused by incorrect use of preferred_node.
When mempolicy in mode MPOL_PREFERRED with flags MPOL_F_LOCAL, it uses
numa_node_id() instead of preferred_node, however, __mpol_equal() uses
preferred_node without checking whether it is MPOL_F_LOCAL or not.
[[email protected]: slight comment tweak]
Link: http://lkml.kernel.org/r/[email protected]
Fixes: fc36b8d3d819 ("mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local Policy")
Signed-off-by: Yisheng Xie <[email protected]>
Reported-by: Alexander Potapenko <[email protected]>
Tested-by: Alexander Potapenko <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Dmitriy Vyukov <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The original ast driver cannot display properly if the resolution is 1280x800 and the pixel clock is 83.5MHz.
Here is the update to fix it.
Signed-off-by: Y.C. Chen <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These revert one recent commit that added incorrect battery quirks for
some Asus systems and fix an off-by-one error in the watchdog driver
based on the ACPI WDAT table.
Specifics:
- Revert the recent change adding battery quirks for Asus GL502VSK
and UX305LA as these quirks turn out to be inadequate and possibly
premature (Daniel Drake).
- Fix an off-by-one error in the resource allocation part of the
watchdog driver based on the ACPI WDAT table (Takashi Iwai)"
* tag 'acpi-4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / watchdog: Fix off-by-one error at resource assignment
Revert "ACPI / battery: Add quirk for Asus GL502VSK and UX305LA"
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules fix from Jessica Yu:
"Propagate error in modules_open() to avoid possible later NULL
dereference if seq_open() had failed"
* tag 'modules-for-v4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: propagate error in modules_open()
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* acpi-wdat:
ACPI / watchdog: Fix off-by-one error at resource assignment
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Pull networking fixes from David Miller:
1) Always validate XFRM esn replay attribute, from Florian Westphal.
2) Fix RCU read lock imbalance in xfrm_get_tos(), from Xin Long.
3) Don't try to get firmware dump if not loaded in iwlwifi, from Shaul
Triebitz.
4) Fix BPF helpers to deal with SCTP GSO SKBs properly, from Daniel
Axtens.
5) Fix some interrupt handling issues in e1000e driver, from Benjamin
Poitier.
6) Use strlcpy() in several ethtool get_strings methods, from Florian
Fainelli.
7) Fix rhlist dup insertion, from Paul Blakey.
8) Fix SKB leak in netem packet scheduler, from Alexey Kodanev.
9) Fix driver unload crash when link is up in smsc911x, from Jeremy
Linton.
10) Purge out invalid socket types in l2tp_tunnel_create(), from Eric
Dumazet.
11) Need to purge the write queue when TCP connections are aborted,
otherwise userspace using MSG_ZEROCOPY can't close the fd. From
Soheil Hassas Yeganeh.
12) Fix double free in error path of team driver, from Arkadi
Sharshevsky.
13) Filter fixes for hv_netvsc driver, from Stephen Hemminger.
14) Fix non-linear packet access in ipv6 ndisc code, from Lorenzo
Bianconi.
15) Properly filter out unsupported feature flags in macvlan driver,
from Shannon Nelson.
16) Don't request loading the diag module for a protocol if the protocol
itself is not even registered. From Xin Long.
17) If datagram connect fails in ipv6, make sure the socket state is
consistent afterwards. From Paolo Abeni.
18) Use after free in qed driver, from Dan Carpenter.
19) If received ipv4 PMTU is less than the min pmtu, lock the mtu in the
entry. From Sabrina Dubroca.
20) Fix sleep in atomic in tg3 driver, from Jonathan Toppins.
21) Fix vlan in vlan untagging in some situations, from Toshiaki Makita.
22) Fix double SKB free in genlmsg_mcast(). From Nicolas Dichtel.
23) Fix NULL derefs in error paths of tcf_*_init(), from Davide Caratti.
24) Unbalanced PM runtime calls in FEC driver, from Florian Fainelli.
25) Memory leak in gemini driver, from Igor Pylypiv.
26) IDR leaks in error paths of tcf_*_init() functions, from Davide
Caratti.
27) Need to use GFP_ATOMIC in seg6_build_state(), from David Lebrun.
28) Missing dev_put() in error path of macsec_newlink(), from Dan
Carpenter.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (201 commits)
macsec: missing dev_put() on error in macsec_newlink()
net: dsa: Fix functional dsa-loop dependency on FIXED_PHY
hv_netvsc: common detach logic
hv_netvsc: change GPAD teardown order on older versions
hv_netvsc: use RCU to fix concurrent rx and queue changes
hv_netvsc: disable NAPI before channel close
net/ipv6: Handle onlink flag with multipath routes
ppp: avoid loop in xmit recursion detection code
ipv6: sr: fix NULL pointer dereference when setting encap source address
ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
net: aquantia: driver version bump
net: aquantia: Implement pci shutdown callback
net: aquantia: Allow live mac address changes
net: aquantia: Add tx clean budget and valid budget handling logic
net: aquantia: Change inefficient wait loop on fw data reads
net: aquantia: Fix a regression with reset on old firmware
net: aquantia: Fix hardware reset when SPI may rarely hangup
s390/qeth: on channel error, reject further cmd requests
s390/qeth: lock read device while queueing next buffer
s390/qeth: when thread completes, wake up all waiters
...
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"A couple of MMC fixes intended for v4.16-rc7:
MMC host:
- dw_mmc: Fix the suspend/resume issue for Exynos5433
- dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit
systems
- dw_mmc: Make PIO mode work when failing with idmac when
dw_mci_reset occurs
- sdhci-acpi: Re-allow IRQ 0 to fix broken probe
MMC core:
- Update EXT_CSD caches to correctly switch partition for ioctl calls
- Fix tracepoint print of blk_addr and blksz
- Disable HPI on broken Micron (Numonyx) eMMC cards"
* tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-acpi: Fix IRQ 0
mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
mmc: core: Fix tracepoint print of blk_addr and blksz
mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards
mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433
mmc: block: fix updating ext_csd caches on ioctl call
mmc: dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit systems
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Main change is a patch to reject getfb call for multiplanar framebuffers,
then we have a couple of error path fixes on the sun4i driver. Still on that
driver there is a clk fix and finally a mmap offset fix on the udl driver.
* tag 'drm-misc-fixes-2018-03-22' of git://anongit.freedesktop.org/drm/drm-misc:
drm: udl: Properly check framebuffer mmap offsets
drm: Reject getfb for multi-plane framebuffers
drm/sun4i: hdmi: Fix another error handling path in 'sun4i_hdmi_bind()'
drm/sun4i: hdmi: Fix an error handling path in 'sun4i_hdmi_bind()'
drm/sun4i: Fix an error handling path in 'sun4i_drv_bind()'
drm/sun4i: Fix exclusivity of the TCON clocks
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git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
One fix for DP MST and one fix for GPU reset on hang check.
* tag 'drm-intel-fixes-2018-03-21' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915: Specify which engines to reset following semaphore/event lockups
drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
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git://people.freedesktop.org/~thomash/linux into drm-fixes
Two vmwgfx fixes for 4.16. Both cc'd stable.
* 'vmwgfx-fixes-4.16' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Fix a destoy-while-held mutex problem.
drm/vmwgfx: Fix black screen and device errors when running without fbdev
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git://git.pengutronix.de/git/pza/linux into drm-fixes
drm/imx: fixes for early vblank event issue, array underflow error
- fix an array underflow error by reordering the range check before the array
subscript in ipu-prg.
- make some local functions static in ipuv3-plane.
- add a missng header for ipu_planes_assign_pre in ipuv3-plane.
- move arming of the vblank event from atomic_begin to atomic_flush, to avoid
signalling atomic commit completion to userspace before plane atomic_update
has finished, due to a race condition that is likely to be hit on i.MX6QP on
PRE enabled channels.
* tag 'imx-drm-fixes-2018-03-22' of git://git.pengutronix.de/git/pza/linux:
drm/imx: move arming of the vblank event to atomic_flush
drm/imx: ipuv3-plane: Include "imx-drm.h" header file
drm/imx: ipuv3-plane: Make functions static when possible
gpu: ipu-v3: prg: avoid possible array underflow
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We moved the dev_hold(real_dev); call earlier in the function but forgot
to update the error paths.
Fixes: 0759e552bce7 ("macsec: fix negative refcnt on parent link")
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Trivial fix to spelling mistake in dev_err message text
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: f079b6406348 ("staging: mt7621-eth: add gigabit switch driver (GSW)")
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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