Piteball/android_kernel_samsung_msm8976
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Sebastian Andrzej Siewior 3c1df29bd0 pstore/core: drop cmpxchg based updates 
commit d5a9bf0b38d2ac85c9a693c7fb851f74fd2a2494 upstream.

I have here a FPGA behind PCIe which exports SRAM which I use for
pstore. Now it seems that the FPGA no longer supports cmpxchg based
updates and writes back 0xff…ff and returns the same.  This leads to
crash during crash rendering pstore useless.
Since I doubt that there is much benefit from using cmpxchg() here, I am
dropping this atomic access and use the spinlock based version.

Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Rabin Vincent <rabinv@axis.com>
Tested-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
[kees: remove "_locked" suffix since it's the only option now]
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2019-07-27 21:42:49 +02:00
..
9p Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
adfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
affs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
afs
autofs4 move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
befs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
bfs
btrfs Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
cachefiles
ceph move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
cifs This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
coda This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
configfs configfs: fix race between dentry put and lookup 2013-11-29 11:11:53 -08:00
cramfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
crypto fscrypt: catch up to v4.11-rc1 2017-03-09 11:48:12 -08:00
debugfs BACKPORT: dentry name snapshots 2017-12-22 20:25:56 +00:00
devpts This is the 3.10.98 stable release 2017-04-18 17:17:24 +02:00
dlm
ecryptfs fs: ecryptfs: Checkout to LA.BR.1.3.6-04510-8976.0 2018-02-06 13:12:17 +01:00
efivarfs efi: Make efivarfs entries immutable by default 2016-03-16 08:41:37 -07:00
efs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
exfat Import latest Samsung release 2017-04-18 03:43:52 +02:00
exofs ore: Fix wrong math in allocation of per device BIO 2014-02-13 13:48:00 -08:00
exportfs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
ext2 it's still short a few helpers, but infrastructure should be OK now... 2018-12-03 11:52:03 +01:00
ext3 ext[34]: fix double put in tmpfile 2018-12-03 11:52:41 +01:00
ext4 ext4: sanity check the block and cluster size at mount time 2019-07-27 21:42:20 +02:00
f2fs UPSTREAM: f2fs: sanity check segment count 2017-09-08 18:49:20 +00:00
fat Import latest Samsung release 2017-04-18 03:43:52 +02:00
freevxfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
fscache FS-Cache: Increase reference of parent after registering, netfs success 2016-02-19 14:22:41 -08:00
fuse fuse: fix wrong assignment of ->flags in fuse_send_init() 2019-07-27 21:41:59 +02:00
gfs2 ANDROID: fix acl leaks 2017-04-28 21:43:17 -07:00
hfs Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hfsplus Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hostfs uml: fix hostfs mknod() 2016-03-03 15:06:23 -08:00
hpfs Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hppfs
hugetlbfs mm: larger stack guard gap, between vmas 2017-07-11 00:00:39 +00:00
isofs isofs: Do not return EACCES for unknown filesystems 2019-07-27 21:42:21 +02:00
jbd
jbd2 This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
jffs2 Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
jfs ANDROID: fix acl leaks 2017-04-28 21:43:17 -07:00
lockd lockd: create NSM handles per net namespace 2016-03-03 15:06:20 -08:00
logfs
minix it's still short a few helpers, but infrastructure should be OK now... 2018-12-03 11:52:03 +01:00
ncpfs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
nfs This is the 3.10.99 stable release 2017-04-18 17:17:46 +02:00
nfs_common
nfsd constify ->actor 2015-09-16 18:20:09 +05:30
nilfs2 This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
nls
notify vfs: Add permission2 for filesystems with per mount permissions 2018-02-06 13:12:19 +01:00
ntfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
ocfs2 Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
omfs fs, omfs: add NULL terminator in the end up the token list 2015-06-05 23:19:54 -07:00
openpromfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
proc UPSTREAM: capabilities: ambient capabilities 2018-02-06 13:12:16 +01:00
pstore pstore/core: drop cmpxchg based updates 2019-07-27 21:42:49 +02:00
qnx4 fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
qnx6 fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
quota quota: provide interface for readding allocated space into reserved space 2015-01-29 17:40:57 -08:00
ramfs
reiserfs posix_acl: Clear SGID bit when setting file permissions 2017-04-28 00:00:11 -07:00
romfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
sdcardfs ANDROID: sdcardfs: Protect set_top 2018-08-15 14:40:15 +02:00
sdfat Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
squashfs Squashfs: Add LZ4 compression configuration option 2015-09-16 18:20:12 +05:30
sysfs Import latest Samsung release 2017-04-18 03:43:52 +02:00
sysv This is the 3.10.97 stable release 2017-04-18 17:17:20 +02:00
ubifs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
udf This is the 3.10.98 stable release 2017-04-18 17:17:24 +02:00
ufs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
xfs Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
yaffs2 fs: yaffs2: initialize delayed workqueue before using it 2013-11-26 23:29:26 -08:00
aio.c Merge tag 'LA.BR.1.3.6-03510-8976.0' into HEAD 2017-04-18 12:11:50 +02:00
anon_inodes.c
attr.c vfs: Add setattr2 for filesystems with per mount permissions 2018-02-06 13:12:20 +01:00
bad_inode.c
binfmt_aout.c mm: remove free_area_cache 2014-02-07 13:49:41 -08:00
binfmt_elf.c This is the 3.10.97 stable release 2017-04-18 17:17:20 +02:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c bio-integrity: Fix bio_integrity_verify segment start bug 2014-03-23 21:38:21 -07:00
bio.c platform: msm: fix PFT when using direct-io 2014-06-23 21:38:40 +03:00
block_dev.c mm: vmscan: take page buffers dirty and locked state into account 2014-12-11 15:12:10 +05:30
buffer.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
char_dev.c
compat.c constify ->actor 2015-09-16 18:20:09 +05:30
compat_binfmt_elf.c binfmt_elf: add ELF_HWCAP2 to compat auxv entries 2015-03-19 14:52:32 -07:00
compat_ioctl.c fs: Add TTY PM IOCTLs to compat table 2014-07-30 10:25:00 -06:00
coredump.c coredump: fix unfreezable coredumping task 2019-07-27 21:42:15 +02:00
coredump.h
dcache.c fix d_walk()/non-delayed __d_free() race 2019-07-27 21:41:52 +02:00
dcookies.c fs/compat: fix lookup_dcookie() parameter handling 2014-02-13 13:48:00 -08:00
direct-io.c platform: msm: fix PFT when using direct-io 2014-06-23 21:38:40 +03:00
drop_caches.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
eventfd.c
eventpoll.c Revert "epoll: use freezable blocking call" 2014-08-29 14:20:41 -07:00
exec.c vfs: Add permission2 for filesystems with per mount permissions 2018-02-06 13:12:19 +01:00
fcntl.c vfs: add missing check for __O_TMPFILE in fcntl_init() 2018-12-03 11:52:41 +01:00
fhandle.c vfs: read file_handle only once in handle_to_path. 2015-07-22 07:25:30 -07:00
file.c Merge upstream linux-stable v3.10.36 into msm-3.10 2014-04-23 16:23:49 -07:00
file_table.c get rid of s_files and files_lock 2015-07-03 19:48:08 -07:00
filesystems.c
fs-writeback.c sync: don't block the flusher thread waiting on IO 2015-09-16 18:20:20 +05:30
fs_struct.c sdcardfs: override umask on mkdir and create 2018-02-06 13:12:18 +01:00
generic_acl.c tmpfs: clear S_ISGID when setting posix ACLs 2017-04-22 23:02:57 +02:00
inode.c allow the temp files created by open() to be linked to 2018-12-03 11:52:08 +01:00
internal.h vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
ioctl.c
ioprio.c block: fix use-after-free in sys_ioprio_get() 2016-11-19 20:01:20 -08:00
Kconfig Initial port of sdcardfs 2018-02-06 13:12:17 +01:00
Kconfig.binfmt
libfs.c move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
locks.c locks: fix unlock when fcntl_setlk races with a close 2016-03-09 15:31:53 -08:00
Makefile Initial port of sdcardfs 2018-02-06 13:12:17 +01:00
mbcache.c
mount.h vfs: Is mounted should be testing mnt_ns for NULL or error. 2014-02-06 11:08:16 -08:00
mpage.c
namei.c fs: allow open(dir, O_TMPFILE|..., 0) with mode 0 2018-12-03 11:52:42 +01:00
namespace.c vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
no-block.c
open.c fs: Fix file mode for O_TMPFILE 2018-12-03 11:52:40 +01:00
pipe.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
pnode.c ANDROID: mnt: remount should propagate to slaves of slaves 2018-02-06 13:12:20 +01:00
pnode.h ANDROID: mnt: remount should propagate to slaves of slaves 2018-02-06 13:12:20 +01:00
posix_acl.c posix_acl: Clear SGID bit when setting file permissions 2017-04-28 00:00:11 -07:00
proc_namespace.c vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
read_write.c fs: Workaround the compiler's bad optimization 2016-02-04 13:23:34 +05:30
readdir.c fs: readdir: Fix su hide patch for non-iterate filesystems 2017-07-14 21:04:43 +02:00
select.c select: use freezable blocking call 2013-07-01 15:45:28 -07:00
seq_file.c fs/seq_file: fix out-of-bounds read 2019-07-27 21:42:21 +02:00
signalfd.c signalfd: fix information leak in signalfd_copyinfo 2015-08-16 20:51:42 -07:00
splice.c splice: handle zero nr_pages in splice_to_pipe() 2016-06-07 10:42:46 +02:00
stack.c
stat.c quota: provide interface for readding allocated space into reserved space 2015-01-29 17:40:57 -08:00
statfs.c vfs: allow O_PATH file descriptors for fstatfs() 2013-10-18 07:45:44 -07:00
super.c vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
sync.c Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
timerfd.c timerfd: Protect the might cancel mechanism proper 2017-11-08 05:33:07 -08:00
utimes.c vfs: Add setattr2 for filesystems with per mount permissions 2018-02-06 13:12:20 +01:00
xattr.c ANDROID: xattr: Pass EOPNOTSUPP to permission2 2018-08-15 14:40:12 +02:00
xattr_acl.c