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2016-10-11autofs: remove obsolete sb fieldsTomohiro Kusumi1-2/+0
These two were left from commit aa55ddf340c9 ("autofs4: remove unused ioctls") which removed unused ioctls. Link: http://lkml.kernel.org/r/20160812024810.12352.96377.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <ikent@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: use autofs4_free_ino() to kfree dentry dataTomohiro Kusumi1-1/+1
kfree dentry data allocated by autofs4_new_ino() with autofs4_free_ino() instead of raw kfree. (since we have the interface to free autofs_info*) This patch was modified to remove the need to set the dentry info field to NULL dew to a change in the previous patch. Link: http://lkml.kernel.org/r/20160812024805.12352.43650.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: remove ino free in autofs4_dir_symlink()Ian Kent1-2/+0
The inode allocation failure case in autofs4_dir_symlink() frees the autofs dentry info of the dentry without setting ->d_fsdata to NULL. That could lead to a double free so just get rid of the free and leave it to ->d_release(). Link: http://lkml.kernel.org/r/20160812024759.12352.10653.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: add WARN_ON(1) for non dir/link inode caseTomohiro Kusumi1-1/+2
It's invalid if the given mode is neither dir nor link, so warn on else case. Link: http://lkml.kernel.org/r/20160812024754.12352.8536.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: fix autofs4_fill_super() error exit handlingIan Kent1-3/+3
Somewhere along the line the error handling gotos have become incorrect. Link: http://lkml.kernel.org/r/20160812024749.12352.15100.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: test autofs versions first on sb initializationTomohiro Kusumi1-17/+17
This patch does what the below comment says. It could be and it's considered better to do this first before various functions get called during initialization. /* Couldn't this be tested earlier? */ Link: http://lkml.kernel.org/r/20160812024744.12352.43075.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: drop unnecessary extern in autofs_i.hTomohiro Kusumi1-1/+1
autofs4_kill_sb() doesn't need to be declared as extern, and no other functions in .h are explicitly declared as extern. Link: http://lkml.kernel.org/r/20160812024739.12352.99354.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11autofs: fix typos in Documentation/filesystems/autofs4.txtTomohiro Kusumi1-4/+4
plus minor whitespace fixes. Link: http://lkml.kernel.org/r/20160812024734.12352.17122.stgit@pluto.themaw.net Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11kprobes: include <asm/sections.h> instead of <asm-generic/sections.h>Christoph Hellwig1-1/+1
asm-generic headers are generic implementations for architecture specific code and should not be included by common code. Thus use the asm/ version of sections.h to get at the linker sections. Link: http://lkml.kernel.org/r/1473602302-6208-1-git-send-email-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: improve the octal permissions testsJoe Perches1-16/+44
The function calls with octal permissions commonly span multiple lines. The current test is line oriented and fails to find some matches. Make the test use the $stat variable instead of the $line variable to span multiple lines. Also add a few functions to the known functions with permissions list. Move the SYMBOLIC_PERMS test to a separate section to find all the S_<FOO> permissions in any form not just those that have specific function names. This can now find and fix permissions uses like: .mode = S_<FOO> | S_<BAR>; Link: http://lkml.kernel.org/r/b51bab60530912aae4ac420119d465c5b206f19f.1475030406.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Tested-by: Ramiro Oliveira <roliveir@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: add warning for unnamed function definition argumentsJoe Perches1-0/+13
Function definitions without identifiers like int foo(int) are not preferred. Emit a warning when they occur. Link: http://lkml.kernel.org/r/94fe6378504745991b650f48fc92bb4648f25706.1474925354.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: improve MACRO_ARG_PRECEDENCE testJoe Perches1-1/+19
It is possible for a multiple line macro definition to have a false positive report when an argument is used on a line after a continuation \. This line might have a leading '+' as the initial character that could be confused by checkpatch as an operator. Avoid the leading character on multiple line macro definitions. Link: http://lkml.kernel.org/r/60229d13399f9b6509db5a32e30d4c16951a60cd.1473836073.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: add --strict test for precedence challenged macro argumentsJoe Perches1-1/+8
Add a test for macro arguents that have a non-comma leading or trailing operator where the argument isn't parenthesized to avoid possible precedence issues. Link: http://lkml.kernel.org/r/47715508972f8d786f435e583ff881dbeee3a114.1473745855.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: add --strict test for macro argument reuseJoe Perches1-8/+35
If a macro argument is used multiple times in the macro definition, the macro argument may have an unexpected side-effect. Add a test (MACRO_ARG_REUSE) for that condition which is only emitted with command-line option --strict. Link: http://lkml.kernel.org/r/b6d67a87cafcafd15499e91780dc63b15dec0aa0.1473744906.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: improve the block comment * alignment testJoe Perches1-7/+12
An "uninitialized value" is emitted when a block comment starts on the same line as a statement. Fix this and make the test use a little fewer cpu cycles too. Link: http://lkml.kernel.org/r/3c9993320c2182d37f53ac540878cfef59c3f62d.1473365956.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Charlemagne Lasse <charlemagnelasse@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: speed up checking for filenames in sections marked obsoleteJoe Perches1-1/+1
Adding -f to the get_maintainer.pl invocation means git isn't invoked by get_maintainer.pl for known filenames. This reduces the overall time to run checkpatch. Link: http://lkml.kernel.org/r/22991e3a295aeb399b43af0478b6e5809106ccee.1472684066.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11const_structs.checkpatch: add frequently used from Julia Lawall's listJoe Perches1-0/+25
Using const is generally a good idea. Julia Lawall has created a list of always const and almost always const structs in the kernel sources. Link: https://lkml.org/lkml/2016/8/28/95 Add the most frequently used (> 50 cases) that are almost always or always const. Link: http://lkml.kernel.org/r/1e16020f8027654db0095bbfbcc11da51025365c.1472664220.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: externalize the structs that should be constJoe Perches2-40/+63
Make it easier to add new structs that should be const. Link: http://lkml.kernel.org/r/e5a8da43e7c11525bafbda1ca69a8323614dd942.1472664220.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Kees Cook <keescook@chromium.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: don't test for prefer ether_addr_<foo>Joe Perches1-35/+35
< sigh > Comment these tests out. These are just too enticing to people that don't verify that both source and dest addresses really must be __aligned(2). It helps make Dan Carpenter happy too. Link: http://lkml.kernel.org/r/dc32ec66d24647f4cdf824c8dfbbc59aa7ce7b7d.1472665676.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Greg <gvrose8192@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: test multiple line block comment alignmentJoe Perches1-0/+19
Warn when block comments are not aligned on the * /* * block comment, no warning */ /* * block comment, emit warning */ Link: http://lkml.kernel.org/r/edb57bd330adfe024b95ec2a807d4aa7f0c8b112.1472261299.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: look for symbolic permissions and suggest octal insteadJoe Perches1-6/+43
S_<FOO> uses should be avoided where octal is more intelligible. Linus didst say: : It's *much* easier to parse and understand the octal numbers, while the : symbolic macro names are just random line noise and hard as hell to : understand. You really have to think about it. : : So we should rather go the other way: convert existing bad symbolic : permission bit macro use to just use the octal numbers. : : The symbolic names are good for the *other* bits (ie sticky bit, and the : inode mode _type_ numbers etc), but for the permission bits, the symbolic : names are just insane crap. Nobody sane should ever use them. Not in the : kernel, not in user space. (http://lkml.kernel.org/r/CA+55aFw5v23T-zvDZp-MmD_EYxF8WbafwwB59934FV7g21uMGQ@mail.gmail.com) Link: http://lkml.kernel.org/r/7232ef011d05a92f4caa86a5e9830d87966a2eaf.1470180926.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11checkpatch: see if modified files are marked obsolete in MAINTAINERSJoe Perches1-0/+14
Use get_maintainer to check the status of individual files. If "obsolete", suggest leaving the files alone. Link: http://lkml.kernel.org/r/7ceaa510dc9d2df05ec4b456baed7bb1415550b3.1471889575.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: SF Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11lib/bitmap.c: enhance bitmap syntaxNoam Camus2-18/+82
Today there are platforms with many CPUs (up to 4K). Trying to boot only part of the CPUs may result in too long string. For example lets take NPS platform that is part of arch/arc. This platform have SMP system with 256 cores each with 16 HW threads (SMT machine) where HW thread appears as CPU to the kernel. In this example there is total of 4K CPUs. When one tries to boot only part of the HW threads from each core the string representing the map may be long... For example if for sake of performance we decided to boot only first half of HW threads of each core the map will look like: 0-7,16-23,32-39,...,4080-4087 This patch introduce new syntax to accommodate with such use case. I added an optional postfix to a range of CPUs which will choose according to given modulo the desired range of reminders i.e.: <cpus range>:sed_size/group_size For example, above map can be described in new syntax like this: 0-4095:8/16 Note that this patch is backward compatible with current syntax. [akpm@linux-foundation.org: rework documentation] Link: http://lkml.kernel.org/r/1473579629-4283-1-git-send-email-noamca@mellanox.com Signed-off-by: Noam Camus <noamca@mellanox.com> Cc: David Decotigny <decot@googlers.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: David S. Miller <davem@davemloft.net> Cc: Pan Xinhui <xinhui@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11lib/kstrtox.c: smaller _parse_integer()Alexey Dobriyan1-5/+1
Set "overflow" bit upon encountering it instead of postponing to the end of the conversion. Somehow gcc unwedges itself and generates better code: $ ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux _parse_integer 177 139 -38 Inspired by patch from Zhaoxiu Zeng. Link: http://lkml.kernel.org/r/20160826221920.GA1909@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11include/linux/ctype.h: make isdigit() table lookuplessAlexey Dobriyan1-1/+4
Make isdigit into a simple range checking inline function: return '0' <= c && c <= '9'; This code is 1 branch, not 2 because any reasonable compiler can optimize this code into SUB+CMP, so the code while (isdigit((c = *s++))) ... remains 1 branch per iteration HOWEVER it suddenly doesn't do table lookup priming cacheline nobody cares about. Link: http://lkml.kernel.org/r/20160826190047.GA12536@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11lib: harden strncpy_from_userMark Rutland1-0/+2
The strncpy_from_user() accessor is effectively a copy_from_user() specialised to copy strings, terminating early at a NUL byte if possible. In other respects it is identical, and can be used to copy an arbitrarily large buffer from userspace into the kernel. Conceptually, it exposes a similar attack surface. As with copy_from_user(), we check the destination range when the kernel is built with KASAN, but unlike copy_from_user() we do not check the destination buffer when using HARDENED_USERCOPY. As strncpy_from_user() calls get_user() in a loop, we must call check_object_size() explicitly. This patch adds this instrumentation to strncpy_from_user(), per the same rationale as with the regular copy_from_user(). In the absence of hardened usercopy this will have no impact as the instrumentation expands to an empty static inline function. Link: http://lkml.kernel.org/r/1472221903-31181-1-git-send-email-mark.rutland@arm.com Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11radix-tree tests: properly initialize mutexRoss Zwisler1-1/+1
The pthread_mutex_t in regression1.c wasn't being initialized properly. Link: http://lkml.kernel.org/r/20160815194237.25967-4-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11radix-tree tests: add iteration testRoss Zwisler4-1/+184
There are four cases I can see where we could end up with a NULL 'slot' in radix_tree_next_slot(). This unit test exercises all four of them, making sure that if in the future we have an unsafe path through radix_tree_next_slot(), we'll catch it. Here are details on the four cases: 1) radix_tree_iter_retry() via a non-tagged iteration like radix_tree_for_each_slot(). In this case we currently aren't seeing a bug because radix_tree_iter_retry() sets iter->next_index = iter->index; which means that in in the else case in radix_tree_next_slot(), 'count' is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 2) radix_tree_iter_retry() via tagged iteration like radix_tree_for_each_tagged(). This case was giving us NULL pointer dereferences in testing, and was fixed with this commit: commit 3cb9185c6730 ("radix-tree: fix radix_tree_iter_retry() for tagged iterators.") This fix doesn't explicitly check for 'slot' being NULL, though, it works around the NULL pointer dereference by instead zeroing iter->tags in radix_tree_iter_retry(), which makes us bail out of the if() case in radix_tree_next_slot() before we dereference 'slot'. 3) radix_tree_iter_next() via via a non-tagged iteration like radix_tree_for_each_slot(). This currently happens in shmem_tag_pins() and shmem_partial_swap_usage(). As with non-tagged iteration, 'count' in the else case of radix_tree_next_slot() is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 4) radix_tree_iter_next() via tagged iteration like radix_tree_for_each_tagged(). This happens in shmem_wait_for_pins(). radix_tree_iter_next() zeros out iter->tags, so we end up exiting radix_tree_next_slot() here: if (flags & RADIX_TREE_ITER_TAGGED) { void *canon = slot; iter->tags >>= 1; if (unlikely(!iter->tags)) return NULL; Link: http://lkml.kernel.org/r/20160815194237.25967-3-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11radix-tree: 'slot' can be NULL in radix_tree_next_slot()Ross Zwisler1-0/+8
There are four cases I can see where we could end up with a NULL 'slot' in radix_tree_next_slot(). Yet radix_tree_next_slot() never actually checks whether 'slot' is NULL. It just happens that for the cases where 'slot' is NULL, some other combination of factors prevents us from dereferencing it. It would be very easy for someone to unwittingly change one of these factors without realizing that we are implicitly depending on it to save us from a NULL pointer dereference. Add a comment documenting the things that allow 'slot' to be safely passed as NULL to radix_tree_next_slot(). Here are details on the four cases: 1) radix_tree_iter_retry() via a non-tagged iteration like radix_tree_for_each_slot(). In this case we currently aren't seeing a bug because radix_tree_iter_retry() sets iter->next_index = iter->index; which means that in in the else case in radix_tree_next_slot(), 'count' is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 2) radix_tree_iter_retry() via tagged iteration like radix_tree_for_each_tagged(). This case was giving us NULL pointer dereferences in testing, and was fixed with this commit: commit 3cb9185c6730 ("radix-tree: fix radix_tree_iter_retry() for tagged iterators.") This fix doesn't explicitly check for 'slot' being NULL, though, it works around the NULL pointer dereference by instead zeroing iter->tags in radix_tree_iter_retry(), which makes us bail out of the if() case in radix_tree_next_slot() before we dereference 'slot'. 3) radix_tree_iter_next() via via a non-tagged iteration like radix_tree_for_each_slot(). This currently happens in shmem_tag_pins() and shmem_partial_swap_usage(). As with non-tagged iteration, 'count' in the else case of radix_tree_next_slot() is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 4) radix_tree_iter_next() via tagged iteration like radix_tree_for_each_tagged(). This happens in shmem_wait_for_pins(). radix_tree_iter_next() zeros out iter->tags, so we end up exiting radix_tree_next_slot() here: if (flags & RADIX_TREE_ITER_TAGGED) { void *canon = slot; iter->tags >>= 1; if (unlikely(!iter->tags)) return NULL; Link: http://lkml.kernel.org/r/20160815194237.25967-2-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11fs/select: add vmalloc fallback for select(2)Vlastimil Babka1-3/+11
The select(2) syscall performs a kmalloc(size, GFP_KERNEL) where size grows with the number of fds passed. We had a customer report page allocation failures of order-4 for this allocation. This is a costly order, so it might easily fail, as the VM expects such allocation to have a lower-order fallback. Such trivial fallback is vmalloc(), as the memory doesn't have to be physically contiguous and the allocation is temporary for the duration of the syscall only. There were some concerns, whether this would have negative impact on the system by exposing vmalloc() to userspace. Although an excessive use of vmalloc can cause some system wide performance issues - TLB flushes etc. - a large order allocation is not for free either and an excessive reclaim/compaction can have a similar effect. Also note that the size is effectively limited by RLIMIT_NOFILE which defaults to 1024 on the systems I checked. That means the bitmaps will fit well within single page and thus the vmalloc() fallback could be only excercised for processes where root allows a higher limit. Note that the poll(2) syscall seems to use a linked list of order-0 pages, so it doesn't need this kind of fallback. [eric.dumazet@gmail.com: fix failure path logic] [akpm@linux-foundation.org: use proper type for size] Link: http://lkml.kernel.org/r/20160927084536.5923-1-vbabka@suse.cz Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11block: implement (some of) fallocate for block devicesDarrick J. Wong2-1/+79
After much discussion, it seems that the fallocate feature flag FALLOC_FL_ZERO_RANGE maps nicely to SCSI WRITE SAME; and the feature FALLOC_FL_PUNCH_HOLE maps nicely to the devices that have been whitelisted for zeroing SCSI UNMAP. Punch still requires that FALLOC_FL_KEEP_SIZE is set. A length that goes past the end of the device will be clamped to the device size if KEEP_SIZE is set; or will return -EINVAL if not. Both start and length must be aligned to the device's logical block size. Since the semantics of fallocate are fairly well established already, wire up the two pieces. The other fallocate variants (collapse range, insert range, and allocate blocks) are not supported. Link: http://lkml.kernel.org/r/147518379992.22791.8849838163218235007.stgit@birch.djwong.org Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Mike Snitzer <snitzer@redhat.com> # tweaked header Cc: Brian Foster <bfoster@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Hannes Reinecke <hare@suse.de> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11block: require write_same and discard requests align to logical block sizeDarrick J. Wong1-0/+15
Make sure that the offset and length arguments that we're using to construct WRITE SAME and DISCARD requests are actually aligned to the logical block size. Failure to do this causes other errors in other parts of the block layer or the SCSI layer because disks don't support partial logical block writes. Link: http://lkml.kernel.org/r/147518379026.22791.4437508871355153928.stgit@birch.djwong.org Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Mike Snitzer <snitzer@redhat.com> # tweaked header Cc: Brian Foster <bfoster@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11block: invalidate the page cache when issuing BLKZEROOUTDarrick J. Wong1-6/+12
Patch series "fallocate for block devices", v11. This is a patchset to fix page cache coherency with BLKZEROOUT and implement fallocate for block devices. The first patch is a fix to the existing BLKZEROOUT ioctl to invalidate the page cache if the zeroing command to the underlying device succeeds. Without this patch we still have the pagecache coherence bug that's been in the kernel forever. The second patch changes the internal block device functions to reject attempts to discard or zeroout that are not aligned to the logical block size. Previously, we only checked that the start/len parameters were 512-byte aligned, which caused kernel BUG_ONs for unaligned IOs to 4k-LBA devices. The third patch creates an fallocate handler for block devices, wires up the FALLOC_FL_PUNCH_HOLE flag to zeroing-discard, and connects FALLOC_FL_ZERO_RANGE to write-same so that we can have a consistent fallocate interface between files and block devices. It also allows the combination of PUNCH_HOLE and NO_HIDE_STALE to invoke non-zeroing discard. Test cases for the new block device fallocate are now in xfstests as generic/349-351. This patch (of 3): Invalidate the page cache (as a regular O_DIRECT write would do) to avoid returning stale cache contents at a later time. Link: http://lkml.kernel.org/r/147518378313.22791.16649519283678515021.stgit@birch.djwong.org Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Brian Foster <bfoster@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11ocfs2: fix memory leak in dlm_migrate_request_handler()Guozhonghua1-0/+3
In the dlm_migrate_request_handler(), when `ret' is -EEXIST, the mle should be freed, otherwise the memory will be leaked. Link: http://lkml.kernel.org/r/71604351584F6A4EBAE558C676F37CA4A3D3522A@H3CMLB12-EX.srv.huawei-3com.com Signed-off-by: Guozhonghua <guozhonghua@h3c.com> Reviewed-by: Mark Fasheh <mfasheh@versity.com> Cc: Eric Ren <zren@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11Fix off-by-one in __pipe_get_pages()Al Viro1-2/+2
it actually worked only when requested area ended on the page boundary... Reported-by: Marco Grassi <marco.gra@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds57-1206/+1421
Pull networking fixes from David Miller: 1) Netfilter list handling fix, from Linus. 2) RXRPC/AFS bug fixes from David Howells (oops on call to serviceless endpoints, build warnings, missing notifications, etc.) From David Howells. 3) Kernel log message missing newlines, from Colin Ian King. 4) Don't enter direct reclaim in netlink dumps, the idea is to use a high order allocation first and fallback quickly to a 0-order allocation if such a high-order one cannot be done cheaply and without reclaim. From Eric Dumazet. 5) Fix firmware download errors in btusb bluetooth driver, from Ethan Hsieh. 6) Missing Kconfig deps for QCOM_EMAC, from Geert Uytterhoeven. 7) Fix MDIO_XGENE dup Kconfig entry. From Laura Abbott. 8) Constrain ipv6 rtr_solicits sysctl values properly, from Maciej ┼╗enczykowski. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits) netfilter: Fix slab corruption. be2net: Enable VF link state setting for BE3 be2net: Fix TX stats for TSO packets be2net: Update Copyright string in be_hw.h be2net: NCSI FW section should be properly updated with ethtool for BE3 be2net: Provide an alternate way to read pf_num for BEx chips wan/fsl_ucc_hdlc: Fix size used in dma_free_coherent() net: macb: NULL out phydev after removing mdio bus xen-netback: make sure that hashes are not send to unaware frontends Fixing a bug in team driver due to incorrect 'unsigned int' to 'int' conversion MAINTAINERS: add myself as a maintainer of xen-netback ipv6 addrconf: disallow rtr_solicits < -1 Bluetooth: btusb: Fix atheros firmware download error drivers: net: phy: Correct duplicate MDIO_XGENE entry ethernet: qualcomm: QCOM_EMAC should depend on HAS_DMA and HAS_IOMEM net: ethernet: mediatek: remove hwlro property in the device tree net: ethernet: mediatek: get hw lro capability by the chip id instead of by the dtsi net: ethernet: mediatek: get the chip id by ETHDMASYS registers net: bgmac: Fix errant feature flag check netlink: do not enter direct reclaim from netlink_dump() ...
2016-10-11netfilter: Fix slab corruption.Linus Torvalds1-75/+33
Use the correct pattern for singly linked list insertion and deletion. We can also calculate the list head outside of the mutex. Fixes: e3b37f11e6e4 ("netfilter: replace list_head with single linked list") Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Aaron Conole <aconole@bytheb.org> Signed-off-by: David S. Miller <davem@davemloft.net> net/netfilter/core.c | 108 ++++++++++++++++----------------------------------- 1 file changed, 33 insertions(+), 75 deletions(-)
2016-10-10Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds182-449/+587
Pull more vfs updates from Al Viro: ">rename2() work from Miklos + current_time() from Deepa" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Replace current_fs_time() with current_time() fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps fs: Replace CURRENT_TIME with current_time() for inode timestamps fs: proc: Delete inode time initializations in proc_alloc_inode() vfs: Add current_time() api vfs: add note about i_op->rename changes to porting fs: rename "rename2" i_op to "rename" vfs: remove unused i_op->rename fs: make remaining filesystems use .rename2 libfs: support RENAME_NOREPLACE in simple_rename() fs: support RENAME_NOREPLACE for local filesystems ncpfs: fix unused variable warning
2016-10-10Merge remote-tracking branch 'ovl/rename2' into for-linusAl Viro483-2736/+4379
2016-10-10Merge tag 'for-linus-20161008' of git://git.infradead.org/linux-mtdLinus Torvalds28-459/+1263
Pull MTD updates from Brian Norris: "I've not been very active this cycle, so these are mostly from Boris, for the NAND flash subsystem. NAND: - Add the infrastructure to automate NAND timings configuration - Provide a generic DT property to maximize ECC strength - Some refactoring in the core bad block table handling, to help with improving some of the logic in error cases. - Minor cleanups and fixes MTD: - Add APIs for handling page pairing; this is necessary for reliably supporting MLC and TLC NAND flash, where paired-page disturbance affects reliability. Upper layers (e.g., UBI) should make use of these in the near future" * tag 'for-linus-20161008' of git://git.infradead.org/linux-mtd: (35 commits) mtd: nand: fix trivial spelling error mtdpart: Propagate _get/put_device() mtd: nand: Provide nand_cleanup() function to free NAND related resources mtd: Kill the OF_MTD Kconfig option mtd: nand: mxc: Test CONFIG_OF instead of CONFIG_OF_MTD mtd: nand: Fix nand_command_lp() for 8bits opcodes mtd: nand: sunxi: Support ECC maximization mtd: nand: Support maximizing ECC when using software BCH mtd: nand: Add an option to maximize the ECC strength mtd: nand: mxc: Add timing setup for v2 controllers mtd: nand: mxc: implement onfi get/set features mtd: nand: sunxi: switch from manual to automated timing config mtd: nand: automate NAND timings selection mtd: nand: Expose data interface for ONFI mode 0 mtd: nand: Add function to convert ONFI mode to data_interface mtd: nand: convert ONFI mode into data interface mtd: nand: Introduce nand_data_interface mtd: nand: Create a NAND reset function mtd: nand: remove unnecessary 'extern' from function declarations MAINTAINERS: Add maintainer entry for Ingenic JZ4780 NAND driver ...
2016-10-10Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds80-687/+471
Pull vfs xattr updates from Al Viro: "xattr stuff from Andreas This completes the switch to xattr_handler ->get()/->set() from ->getxattr/->setxattr/->removexattr" * 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vfs: Remove {get,set,remove}xattr inode operations xattr: Stop calling {get,set,remove}xattr inode operations vfs: Check for the IOP_XATTR flag in listxattr xattr: Add __vfs_{get,set,remove}xattr helpers libfs: Use IOP_XATTR flag for empty directory handling vfs: Use IOP_XATTR flag for bad-inode handling vfs: Add IOP_XATTR inode operations flag vfs: Move xattr_resolve_name to the front of fs/xattr.c ecryptfs: Switch to generic xattr handlers sockfs: Get rid of getxattr iop sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names kernfs: Switch to generic xattr handlers hfs: Switch to generic xattr handlers jffs2: Remove jffs2_{get,set,remove}xattr macros xattr: Remove unnecessary NULL attribute name check
2016-10-10Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds77-1654/+3852
Pull crypto updates from Herbert Xu: "Here is the crypto update for 4.9: API: - The crypto engine code now supports hashes. Algorithms: - Allow keys >= 2048 bits in FIPS mode for RSA. Drivers: - Memory overwrite fix for vmx ghash. - Add support for building ARM sha1-neon in Thumb2 mode. - Reenable ARM ghash-ce code by adding import/export. - Reenable img-hash by adding import/export. - Add support for multiple cores in omap-aes. - Add little-endian support for sha1-powerpc. - Add Cavium HWRNG driver for ThunderX SoC" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (137 commits) crypto: caam - treat SGT address pointer as u64 crypto: ccp - Make syslog errors human-readable crypto: ccp - clean up data structure crypto: vmx - Ensure ghash-generic is enabled crypto: testmgr - add guard to dst buffer for ahash_export crypto: caam - Unmap region obtained by of_iomap crypto: sha1-powerpc - little-endian support crypto: gcm - Fix IV buffer size in crypto_gcm_setkey crypto: vmx - Fix memory corruption caused by p8_ghash crypto: ghash-generic - move common definitions to a new header file crypto: caam - fix sg dump hwrng: omap - Only fail if pm_runtime_get_sync returns < 0 crypto: omap-sham - shrink the internal buffer size crypto: omap-sham - add support for export/import crypto: omap-sham - convert driver logic to use sgs for data xmit crypto: omap-sham - change the DMA threshold value to a define crypto: omap-sham - add support functions for sg based data handling crypto: omap-sham - rename sgl to sgl_tmp for deprecation crypto: omap-sham - align algorithms on word offset crypto: omap-sham - add context export/import stubs ...
2016-10-10Merge tag 'dlm-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlmLinus Torvalds1-6/+2
Pull dlm fix from David Teigland: "This includes a bug fix for a bad memory access during workqueue cleanup, which can happen while shutting down the dlm networking layer" * tag 'dlm-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: free workqueues after the connections
2016-10-10Merge tag 'ceph-for-4.9-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds26-339/+1966
Pull Ceph updates from Ilya Dryomov: "The big ticket item here is support for rbd exclusive-lock feature, with maintenance operations offloaded to userspace (Douglas Fuller, Mike Christie and myself). Another block device bullet is a series fixing up layering error paths (myself). On the filesystem side, we've got patches that improve our handling of buffered vs dio write races (Neil Brown) and a few assorted fixes from Zheng. Also included a couple of random cleanups and a minor CRUSH update" * tag 'ceph-for-4.9-rc1' of git://github.com/ceph/ceph-client: (39 commits) crush: remove redundant local variable crush: don't normalize input of crush_ln iteratively libceph: ceph_build_auth() doesn't need ceph_auth_build_hello() libceph: use CEPH_AUTH_UNKNOWN in ceph_auth_build_hello() ceph: fix description for rsize and rasize mount options rbd: use kmalloc_array() in rbd_header_from_disk() ceph: use list_move instead of list_del/list_add ceph: handle CEPH_SESSION_REJECT message ceph: avoid accessing / when mounting a subpath ceph: fix mandatory flock check ceph: remove warning when ceph_releasepage() is called on dirty page ceph: ignore error from invalidate_inode_pages2_range() in direct write ceph: fix error handling of start_read() rbd: add rbd_obj_request_error() helper rbd: img_data requests don't own their page array rbd: don't call rbd_osd_req_format_read() for !img_data requests rbd: rework rbd_img_obj_exists_submit() error paths rbd: don't crash or leak on errors in rbd_img_obj_parent_read_full_callback() rbd: move bumping img_request refcount into rbd_obj_request_submit() rbd: mark the original request as done if stat request fails ...
2016-10-10Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds5-14/+8
Pull splice fixups from Al Viro: "A couple of fixups for interaction of pipe-backed iov_iter with O_DIRECT reads + constification of a couple of primitives in uio.h missed by previous rounds. Kudos to davej - his fuzzing has caught those bugs" * 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: [btrfs] fix check_direct_IO() for non-iovec iterators constify iov_iter_count() and iter_is_iovec() fix ITER_PIPE interaction with direct_IO
2016-10-10Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds136-640/+737
Pull misc vfs updates from Al Viro: "Assorted misc bits and pieces. There are several single-topic branches left after this (rename2 series from Miklos, current_time series from Deepa Dinamani, xattr series from Andreas, uaccess stuff from from me) and I'd prefer to send those separately" * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (39 commits) proc: switch auxv to use of __mem_open() hpfs: support FIEMAP cifs: get rid of unused arguments of CIFSSMBWrite() posix_acl: uapi header split posix_acl: xattr representation cleanups fs/aio.c: eliminate redundant loads in put_aio_ring_file fs/internal.h: add const to ns_dentry_operations declaration compat: remove compat_printk() fs/buffer.c: make __getblk_slow() static proc: unsigned file descriptors fs/file: more unsigned file descriptors fs: compat: remove redundant check of nr_segs cachefiles: Fix attempt to read i_blocks after deleting file [ver #2] cifs: don't use memcpy() to copy struct iov_iter get rid of separate multipage fault-in primitives fs: Avoid premature clearing of capabilities fs: Give dentry to inode_change_ok() instead of inode fuse: Propagate dentry down to inode_change_ok() ceph: Propagate dentry down to inode_change_ok() xfs: Propagate dentry down to inode_change_ok() ...
2016-10-10Merge branch 'pcmcia' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds4-102/+183
Pull ARM pcmcia updates from Russell King: "These updates lay the foundations for more generic soc_common PCMCIA support, which will result in several of the board specific drivers being elimated. As the dependencies for this are complex, the preliminary work is being submitted now, with the remainder scheduled for the next merge window" * 'pcmcia' of git://git.armlinux.org.uk/~rmk/linux-arm: pcmcia: soc_common: add driver-data pointer pcmcia: soc_common: add support for voltage sense GPIOs pcmcia: soc_common: constify pcmcia_low_level ops pointer pcmcia: soc_common: switch to a per-socket cpufreq notifier pcmcia: soc_common: add support for Vcc and Vpp regulators pcmcia: soc_common: add CF socket state helper pcmcia: soc_common: restore previous socket state on error pcmcia: soc_common: add support for reset and bus enable GPIOs pcmcia: soc_common: request legacy detect GPIO with active low pcmcia: soc_common: ignore invalid interrupts pcmcia: soc_common: switch to using gpio_descs pcmcia: soc_common: use devm_gpio_request_one()
2016-10-10Merge tag 'nios2-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2Linus Torvalds2-14/+9
Pull nios2 update from Ley Foon Tan: "Use of_property_read_bool() instead of open-coding it" * tag 'nios2-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2: nios2: use of_property_read_bool
2016-10-10Merge tag 'cris-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/crisLinus Torvalds22-217/+83
Pull CRIS updates from Jesper Nilsson. * tag 'cris-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris: cris: return of class_create should be considered CRIS: defconfig: remove MTDRAM_ABS_POS CRIS v32: remove some double unlocks Fix typos cris: migrate exception table users off module.h and onto extable.h cris: v10: axisflashmap: remove unused ifdefs cris: use generic io.h cris: fix Kconfig mismatch when building with CONFIG_PCI cris: cardbus: fix header include path cris: add dev88_defconfig cris: irq: stop loop from accessing array out of bounds cris: fasttimer: fix mixed declarations and code compile warning cris: intmem: fix pointer comparison compile warning cris: intmem: fix device_initcall compile warning
2016-10-10Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds25-50/+2127
Pull protection keys syscall interface from Thomas Gleixner: "This is the final step of Protection Keys support which adds the syscalls so user space can actually allocate keys and protect memory areas with them. Details and usage examples can be found in the documentation. The mm side of this has been acked by Mel" * 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pkeys: Update documentation x86/mm/pkeys: Do not skip PKRU register if debug registers are not used x86/pkeys: Fix pkeys build breakage for some non-x86 arches x86/pkeys: Add self-tests x86/pkeys: Allow configuration of init_pkru x86/pkeys: Default to a restrictive init PKRU pkeys: Add details of system call use to Documentation/ generic syscalls: Wire up memory protection keys syscalls x86: Wire up protection keys system calls x86/pkeys: Allocation/free syscalls x86/pkeys: Make mprotect_key() mask off additional vm_flags mm: Implement new pkey_mprotect() system call x86/pkeys: Add fault handling for PF_PK page fault bit