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Author SHA1 Message Date
Abel Wu
9cf7a11183 mm/slub: make add_full() condition more explicit 
The commit below is incomplete, as it didn't handle the add_full() part.
commit a4d3f8916c ("slub: remove useless kmem_cache_debug() before
remove_full()")

This patch checks for SLAB_STORE_USER instead of kmem_cache_debug(), since
that should be the only context in which we need the list_lock for
add_full().

Signed-off-by: Abel Wu <wuyun.wu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Liu Xiang <liu.xiang6@zte.com.cn>
Link: https://lkml.kernel.org/r/20200811020240.1231-1-wuyun.wu@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Abel Wu
9f986d998a mm/slub: fix missing ALLOC_SLOWPATH stat when bulk alloc 
The ALLOC_SLOWPATH statistics is missing in bulk allocation now.  Fix it
by doing statistics in alloc slow path.

Signed-off-by: Abel Wu <wuyun.wu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Hewenliang <hewenliang4@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Link: http://lkml.kernel.org/r/20200811022427.1363-1-wuyun.wu@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Abel Wu
c270cf3041 mm/slub.c: branch optimization in free slowpath 
The two conditions are mutually exclusive and gcc compiler will optimise
this into if-else-like pattern.  Given that the majority of free_slowpath
is free_frozen, let's provide some hint to the compilers.

Tests (perf bench sched messaging -g 20 -l 400000, executed 10x
after reboot) are done and the summarized result:

	un-patched	patched
max.	192.316		189.851
min.	187.267		186.252
avg.	189.154		188.086
stdev.	1.37		0.99

Signed-off-by: Abel Wu <wuyun.wu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Hewenliang <hewenliang4@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Link: http://lkml.kernel.org/r/20200813101812.1617-1-wuyun.wu@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
tangjianqiang
d7cff4ded8 include/linux/slab.h: fix a typo error in comment 
fix a typo error in slab.h
"allocagtor" -> "allocator"

Signed-off-by: tangjianqiang <tangjianqiang@xiaomi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Souptick Joarder <jrdr.linux@gmail.com>
Link: https://lkml.kernel.org/r/1600230053-24303-1-git-send-email-tangjianqiang@xiaomi.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Mateusz Nosek
c1ff3f9549 mm/slab.c: clean code by removing redundant if condition 
The removed code was unnecessary and changed nothing in the flow, since in
case of returning NULL by 'kmem_cache_alloc_node' returning 'freelist'
from the function in question is the same as returning NULL.

Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lkml.kernel.org/r/20200915230329.13002-1-mateusznosek0@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Luo Jiaxing
97383c741b fs_parse: mark fs_param_bad_value() as static 
We found the following warning when build kernel with W=1:

fs/fs_parser.c:192:5: warning: no previous prototype for `fs_param_bad_value' [-Wmissing-prototypes]
int fs_param_bad_value(struct p_log *log, struct fs_parameter *param)
     ^
CC      drivers/usb/gadget/udc/snps_udc_core.o

And no header file define a prototype for this function, so we should mark
it as static.

Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/1601293463-25763-1-git-send-email-luojiaxing@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Randy Dunlap
da5c1c0bb3 fs/xattr.c: fix kernel-doc warnings for setxattr & removexattr 
Fix kernel-doc warnings in fs/xattr.c:

../fs/xattr.c:251: warning: Function parameter or member 'dentry' not described in '__vfs_setxattr_locked'
../fs/xattr.c:251: warning: Function parameter or member 'name' not described in '__vfs_setxattr_locked'
../fs/xattr.c:251: warning: Function parameter or member 'value' not described in '__vfs_setxattr_locked'
../fs/xattr.c:251: warning: Function parameter or member 'size' not described in '__vfs_setxattr_locked'
../fs/xattr.c:251: warning: Function parameter or member 'flags' not described in '__vfs_setxattr_locked'
../fs/xattr.c:251: warning: Function parameter or member 'delegated_inode' not described in '__vfs_setxattr_locked'
../fs/xattr.c:458: warning: Function parameter or member 'dentry' not described in '__vfs_removexattr_locked'
../fs/xattr.c:458: warning: Function parameter or member 'name' not described in '__vfs_removexattr_locked'
../fs/xattr.c:458: warning: Function parameter or member 'delegated_inode' not described in '__vfs_removexattr_locked'

Fixes: 08b5d5014a ("xattr: break delegations in {set,remove}xattr")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Frank van der Linden <fllinden@amazon.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Link: http://lkml.kernel.org/r/7a3dd5a2-5787-adf3-d525-c203f9910ec4@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Gang He
8dd71b25c5 ocfs2: fix potential soft lockup during fstrim 
When we discard unused blocks on a mounted ocfs2 filesystem, fstrim
handles each block goup with locking/unlocking global bitmap meta-file
repeatedly. we should let fstrim thread take a break(if need) between
unlock and lock, this will avoid the potential soft lockup problem,
and also gives the upper applications more IO opportunities, these
applications are not blocked for too long at writing files.

Signed-off-by: Gang He <ghe@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Link: https://lkml.kernel.org/r/20200927015815.14904-1-ghe@suse.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Randy Dunlap
679edeb0ed ocfs2: delete repeated words in comments 
Drop duplicated words {the, and} in comments.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Link: https://lkml.kernel.org/r/20200811021845.25134-1-rdunlap@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Rustam Kovhaev
4f8c94022f ntfs: add check for mft record size in superblock 
Number of bytes allocated for mft record should be equal to the mft record
size stored in ntfs superblock as reported by syzbot, userspace might
trigger out-of-bounds read by dereferencing ctx->attr in ntfs_attr_find()

Reported-by: syzbot+aed06913f36eff9b544e@syzkaller.appspotmail.com
Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: syzbot+aed06913f36eff9b544e@syzkaller.appspotmail.com
Acked-by: Anton Altaparmakov <anton@tuxera.com>
Link: https://syzkaller.appspot.com/bug?extid=aed06913f36eff9b544e
Link: https://lkml.kernel.org/r/20200824022804.226242-1-rkovhaev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:27 -07:00
Borislav Petkov
d72e720a19 scripts/decodecode: add the capability to supply the program counter 
So that comparing with objdump output from vmlinux can ease pinpointing
where the trapping instruction actually is.  An example is better than a
thousand words:

  $ PC=0xffffffff8329a927 ./scripts/decodecode < ~/tmp/syz/gfs2.splat
  [ 477.379104][T23917] Code: 48 83 ec 28 48 89 3c 24 48 89 54 24 08 e8 c1 b4 4a fe 48 8d bb 00 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 97 05 00 00 48 8b 9b 00 01 00 00 48 85 db 0f 84
  All code
  ========
  ffffffff8329a8fd:       48 83 ec 28             sub    $0x28,%rsp
  ffffffff8329a901:       48 89 3c 24             mov    %rdi,(%rsp)
  ffffffff8329a905:       48 89 54 24 08          mov    %rdx,0x8(%rsp)
  ffffffff8329a90a:       e8 c1 b4 4a fe          callq  0xffffffff81745dd0
  ffffffff8329a90f:       48 8d bb 00 01 00 00    lea    0x100(%rbx),%rdi
  ffffffff8329a916:       48 b8 00 00 00 00 00    movabs $0xdffffc0000000000,%rax
  ffffffff8329a91d:       fc ff df
  ffffffff8329a920:       48 89 fa                mov    %rdi,%rdx
  ffffffff8329a923:       48 c1 ea 03             shr    $0x3,%rdx
  ffffffff8329a927:*      80 3c 02 00             cmpb   $0x0,(%rdx,%rax,1)               <-- trapping instruction
  ffffffff8329a92b:       0f 85 97 05 00 00       jne    0xffffffff8329aec8
  ffffffff8329a931:       48 8b 9b 00 01 00 00    mov    0x100(%rbx),%rbx
  ffffffff8329a938:       48 85 db                test   %rbx,%rbx
  ffffffff8329a93b:       0f                      .byte 0xf
  ffffffff8329a93c:       84                      .byte 0x84

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Marc Zyngier <maz@misterjones.org>
Cc: Will Deacon <will@kernel.org>
Cc: Rabin Vincent <rabin@rab.in>
Link: https://lkml.kernel.org/r/20200930111416.GF6810@zn.tnic
Link: https://lkml.kernel.org/r/20200929113238.GC21110@zn.tnic
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Naoki Hayama
33c5bb375e scripts/spelling.txt: add "arbitrary" typo 
Add "abitrary||arbitrary".

Signed-off-by: Naoki Hayama <naoki.hayama@lineo.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Link: https://lkml.kernel.org/r/6bf6520d-787d-5749-09b5-ff92185f501f@lineo.co.jp
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Wang Qing
2c92406f33 scripts/spelling.txt: increase error-prone spell checking 
Increase direcly,ununsed,manger spelling error check

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Wang Qing <wangqing@vivo.com>
Cc: Xiong <xndchn@gmail.com>
Cc: SeongJae Park <sjpark@amazon.de>
Cc: Jonathan Neuschfer <j.neuschaefer@gmx.net>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Joe Perches <joe@perches.com>
Link: https://lkml.kernel.org/r/1601085397-27586-1-git-send-email-wangqing@vivo.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Lukas Bulwahn
eb38f37c3c kbuild: doc: describe proper script invocation 
During an investigation to fix up the execute bits of scripts in the
kernel repository, Andrew Morton and Kees Cook pointed out that the
execute bit should not matter, and that build scripts cannot rely on that.
Kees could not point to any documentation, though.

Masahiro Yamada explained the convention of setting execute bits to make
it easier for manual script invocation.

Provide some basic documentation how the build shall invoke scripts, such
that the execute bits do not matter, and acknowledge that execute bits are
useful nonetheless.

This serves as reference for further clean-up patches in the future.

Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ujjwal Kumar <ujjwalkumar0501@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/lkml/20200830174409.c24c3f67addcce0cea9a9d4c@linux-foundation.org/
Link: https://lore.kernel.org/lkml/202008271102.FEB906C88@keescook/
Link: https://lore.kernel.org/linux-kbuild/CAK7LNAQdrvMkDA6ApDJCGr+5db8SiPo=G+p8EiOvnnGvEN80gA@mail.gmail.com/
Link: https://lkml.kernel.org/r/20201001075723.24246-1-lukas.bulwahn@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
4d6fb34acb export.h: fix section name for CONFIG_TRIM_UNUSED_KSYMS for Clang 
When enabling CONFIG_TRIM_UNUSED_KSYMS, the linker will warn about the
orphan sections:

(".discard.ksym") is being placed in '".discard.ksym"'

repeatedly when linking vmlinux.  This is because the stringification
operator, `#`, in the preprocessor escapes strings.  GCC and Clang differ
in how they treat section names that contain \".

The portable solution is to not use a string literal with the preprocessor
stringification operator.

Fixes: commit bbda5ec671 ("kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS")
Reported-by: kbuild test robot <lkp@intel.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Matthias Maennich <maennich@google.com>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Will Deacon <will@kernel.org>
Link: https://bugs.llvm.org/show_bug.cgi?id=42950
Link: https://github.com/ClangBuiltLinux/linux/issues/1166
Link: https://lkml.kernel.org/r/20200929190701.398762-1-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
a25c13b3aa compiler.h: avoid escaped section names 
The stringification operator, `#`, in the preprocessor escapes strings.
For example, `# "foo"` becomes `"\"foo\""`.  GCC and Clang differ in how
they treat section names that contain \".

The portable solution is to not use a string literal with the preprocessor
stringification operator.

In this case, since __section unconditionally uses the stringification
operator, we actually want the more verbose
__attribute__((__section__())).

Fixes: commit e04462fb82 ("Compiler Attributes: remove uses of __attribute__ from compiler.h")
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://bugs.llvm.org/show_bug.cgi?id=42950
Link: https://lkml.kernel.org/r/20200929194318.548707-1-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
c8db3b0a7b compiler-gcc: improve version error 
As Kees suggests, doing so provides developers with two useful pieces of
information:
- The kernel build was attempting to use GCC.
  (Maybe they accidentally poked the wrong configs in a CI.)
- They need 4.9 or better.
  ("Upgrade to what version?" doesn't need to be dug out of documentation,
   headers, etc.)

Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-8-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Marco Elver
527f6750d9 kasan: remove mentions of unsupported Clang versions 
Since the kernel now requires at least Clang 10.0.1, remove any mention of
old Clang versions and simplify the documentation.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-7-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
3511af0a72 Partially revert "ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer" 
This partially reverts commit b0fe66cf09.

The minimum supported version of clang is now clang 10.0.1. We still
want to pass -meabi=gnu.

Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-6-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
3759da22e5 Revert "arm64: vdso: Fix compilation with clang older than 8" 
This reverts commit 3acf4be235.

The minimum supported version of clang is clang 10.0.1.

Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-5-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
2980e6070e Revert "arm64: bti: Require clang >= 10.0.1 for in-kernel BTI support" 
This reverts commit b9249cba25.

The minimum supported version of clang is now 10.0.1.

Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-4-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
4c207c50ea Revert "kbuild: disable clang's default use of -fmerge-all-constants" 
This reverts commit 87e0d4f0f3.

-fno-merge-all-constants has been the default since clang-6; the minimum
supported version of clang in the kernel is clang-10 (10.0.1).

Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200902225911.209899-3-ndesaulniers@google.com
Link: https://reviews.llvm.org/rL329300.
Link: https://github.com/ClangBuiltLinux/linux/issues/9
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Nick Desaulniers
1f7a44f63e compiler-clang: add build check for clang 10.0.1 
Patch series "set clang minimum version to 10.0.1", v3.

Adds a compile time #error to compiler-clang.h setting the effective
minimum supported version to clang 10.0.1.  A separate patch has already
been picked up into the Documentation/ tree also confirming the version.

Next are a series of reverts. One for 32b arm is a partial revert.

Then Marco suggested fixes to KASAN docs.

Finally, improve the warning for GCC too as per Kees.

This patch (of 7):

During Plumbers 2020, we voted to just support the latest release of Clang
for now.  Add a compile time check for this.

We plan to remove workarounds for older versions now, which will break in
subtle and not so subtle ways.

Suggested-by: Sedat Dilek <sedat.dilek@gmail.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: Marco Elver <elver@google.com>
Acked-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lkml.kernel.org/r/20200902225911.209899-1-ndesaulniers@google.com
Link: https://lkml.kernel.org/r/20200902225911.209899-2-ndesaulniers@google.com
Link: https://github.com/ClangBuiltLinux/linux/issues/9
Link: https://github.com/ClangBuiltLinux/linux/issues/941
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-10-13 18:38:26 -07:00
Cong Wang
fdafed4599 ip_gre: set dev->hard_header_len and dev->needed_headroom properly 
GRE tunnel has its own header_ops, ipgre_header_ops, and sets it
conditionally. When it is set, it assumes the outer IP header is
already created before ipgre_xmit().

This is not true when we send packets through a raw packet socket,
where L2 headers are supposed to be constructed by user. Packet
socket calls dev_validate_header() to validate the header. But
GRE tunnel does not set dev->hard_header_len, so that check can
be simply bypassed, therefore uninit memory could be passed down
to ipgre_xmit(). Similar for dev->needed_headroom.

dev->hard_header_len is supposed to be the length of the header
created by dev->header_ops->create(), so it should be used whenever
header_ops is set, and dev->needed_headroom should be used when it
is not set.

Reported-and-tested-by: syzbot+4a2c52677a8a1aa283cb@syzkaller.appspotmail.com
Cc: William Tu <u9012063@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 18:35:29 -07:00
Jonathan Marek
80a18f4a85 clk: qcom: Add display clock controller driver for SM8150 and SM8250 
Add support for the display clock controller found on SM8150 and SM8250.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> (SM8250)
Link: https://lore.kernel.org/r/20200927190653.13876-3-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:18:06 -07:00
Jonathan Marek
d05a58047c dt-bindings: clock: add QCOM SM8150 and SM8250 display clock bindings 
Add device tree bindings for display clock controller for
Qualcomm Technology Inc's SM8150 and SM8250 SoCs.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> (SM8250)
Link: https://lore.kernel.org/r/20200927190653.13876-2-jonathan@marek.ca
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:18:06 -07:00
Jonathan Marek
0e94711a1f clk: qcom: add video clock controller driver for SM8250 
Add support for the video clock controller found on SM8250 based devices.

Derived from the downstream driver.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200923160635.28370-6-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:05:04 -07:00
Jonathan Marek
5658e8cf1a clk: qcom: add video clock controller driver for SM8150 
Add support for the video clock controller found on SM8150 based devices.

Derived from the downstream driver.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200923160635.28370-5-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:05:04 -07:00
Jonathan Marek
dafb992a95 dt-bindings: clock: add SM8250 QCOM video clock bindings 
Add device tree bindings for video clock controller for SM8250 SoCs.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200923160635.28370-4-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:05:04 -07:00
Jonathan Marek
df3f61d2cd dt-bindings: clock: add SM8150 QCOM video clock bindings 
Add device tree bindings for video clock controller for SM8150 SoCs.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200923160635.28370-3-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:05:03 -07:00
Jonathan Marek
70d795d2d8 dt-bindings: clock: combine qcom,sdm845-videocc and qcom,sc7180-videocc 
These two bindings are almost identical, so combine them into one. This
will make it easier to add the sm8150 and sm8250 videocc bindings.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200923160635.28370-2-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:05:03 -07:00
Konrad Dybcio
8c18b41b39 clk: qcom: gcc-msm8994: Add missing clocks, resets and GDSCs 
This change adds GDSCs, resets and most of the missing
clocks to the msm8994 GCC driver. The remaining ones
are of local_vote_clk and gate_clk type, which are not
yet supported upstream. Also reorder them to match the
original downstream driver.

Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Link: https://lore.kernel.org/r/20201005145855.149206-1-konradybcio@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 18:04:36 -07:00
Julia Lawall
3270ee1455 clk: meson: use semicolons rather than commas to separate statements 
Replace commas with semicolons.  What is done is essentially described by
the following Coccinelle semantic patch (http://coccinelle.lip6.fr/):

// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1601233948-11629-11-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 17:43:07 -07:00
Julia Lawall
39443a27cb clk: mvebu: ap80x-cpu: use semicolons rather than commas to separate statements 
Replace commas with semicolons.  What is done is essentially described by
the following Coccinelle semantic patch (http://coccinelle.lip6.fr/):

// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1601233948-11629-10-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 17:43:05 -07:00
Julia Lawall
4f8a13e1c2 clk: uniphier: use semicolons rather than commas to separate statements 
Replace commas with semicolons.  What is done is essentially described by
the following Coccinelle semantic patch (http://coccinelle.lip6.fr/):

// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1601233948-11629-2-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2020-10-13 17:43:03 -07:00
Jakub Kicinski
a003ec1f47 Merge branch 'net-add-and-use-function-dev_fetch_sw_netstats-for-fetching-pcpu_sw_netstats' 
Heiner Kallweit says:

====================
net: add and use function dev_fetch_sw_netstats for fetching pcpu_sw_netstats

In several places the same code is used to populate rtnl_link_stats64
fields with data from pcpu_sw_netstats. Therefore factor out this code
to a new function dev_fetch_sw_netstats().
====================

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:37:37 -07:00
Heiner Kallweit
5fc3594d36 xfrm: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/a6b816f4-bbf2-9db0-d59a-7e4e9cc808fe@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
3569939a81 net: openvswitch: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/5e52dc91-97b1-82b0-214b-65d404e4a2ec@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
6401297e76 mac80211: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/93dda477-70ae-0ccf-71b4-bfebb66c9beb@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
cf89f18fa4 iptunnel: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/050f9a83-b195-a3d6-edbd-91a59040be21@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
a0d2698101 net: dsa: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/b6047017-8226-6b7e-a3cd-064e69fdfa27@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
f3f04f0f3a net: bridge: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/d1c3ff29-5691-9d54-d164-16421905fa59@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
1f68b2096f qtnfmac: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/166259f2-084c-45d7-e610-2de2a0bdae06@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
ab2b3ff21b net: usbnet: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/70ad3e33-8ea6-e12e-31de-5fec7a3c4f6e@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:49 -07:00
Heiner Kallweit
ec173778e9 net: usb: qmi_wwan: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Link: https://lore.kernel.org/r/2c97b75b-107e-0ab6-d9ef-9f38bb03f495@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:48 -07:00
Heiner Kallweit
9d0151673e net: macsec: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/0d81e0f7-7784-42df-8e10-d0b77ca5b7ee@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:48 -07:00
Heiner Kallweit
3b51788a2d IB/hfi1: use new function dev_fetch_sw_netstats 
Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6cad1a04-f021-d94b-45fd-7cc7cf07367d@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:48 -07:00
Heiner Kallweit
44fa32f008 net: add function dev_fetch_sw_netstats for fetching pcpu_sw_netstats 
In several places the same code is used to populate rtnl_link_stats64
fields with data from pcpu_sw_netstats. Therefore factor out this code
to a new function dev_fetch_sw_netstats().

v2:
- constify argument netstats
- don't ignore netstats being NULL or an ERRPTR
- switch to EXPORT_SYMBOL_GPL

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6d16a338-52f5-df69-0020-6bc771a7d498@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:33:48 -07:00
Tonghao Zhang
3618ad2a7c virtio-net: ethtool configurable RXCSUM 
Allow user configuring RXCSUM separately with ethtool -K,
reusing the existing virtnet_set_guest_offloads helper
that configures RXCSUM for XDP. This is conditional on
VIRTIO_NET_F_CTRL_GUEST_OFFLOADS.

If Rx checksum is disabled, LRO should also be disabled.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20201012015820.62042-1-xiangxia.m.yue@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-10-13 17:27:05 -07:00
Rishabh Bhatnagar
526b9e0cf3 remoteproc: Add recovery configuration to the sysfs interface 
Add recovery configuration to the sysfs interface. This will
allow usage of this configuration feature in production
devices where access to debugfs might be limited.

Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Link: https://lore.kernel.org/r/1601662144-5964-4-git-send-email-rishabhb@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
 2020-10-13 19:22:51 -05:00