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android_kernel_xiaomi_sm8450/fs/pstore
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Qiujun Huang 44cf50587e pstore/zone: Use GFP_ATOMIC to allocate zone buffer 
commit 99b3b837855b987563bcfb397cf9ddd88262814b upstream.

There is a case found when triggering a panic_on_oom, pstore fails to dump
kmsg. Because psz_kmsg_write_record can't get the new buffer.

Handle this by using GFP_ATOMIC to allocate a buffer at lower watermark.

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Fixes: 335426c6dc ("pstore/zone: Provide way to skip "broken" zone for MTD devices")
Cc: WeiXiong Liao <gmpy.liaowx@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/CAJRQjofRCF7wjrYmw3D7zd5QZnwHQq+F8U-mJDJ6NZ4bddYdLA@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-14 10:16:26 +01:00
..
blk.c pstore/blk: Introduce "best_effort" mode 2020-05-31 19:49:01 -07:00
ftrace.c pstore/ftrace: Provide ftrace log merging routine 2020-05-30 10:34:02 -07:00
inode.c pstore: Fix warning in pstore_kill_sb() 2021-03-25 09:04:08 +01:00
internal.h pstore/ftrace: Provide ftrace log merging routine 2020-05-30 10:34:02 -07:00
Kconfig pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES 2023-01-14 10:16:22 +01:00
Makefile pstore/blk: Introduce backend for block devices 2020-05-30 10:34:03 -07:00
platform.c pstore: Don't use semaphores in always-atomic-context code 2022-04-08 14:39:56 +02:00
pmsg.c pstore: Switch pmsg_lock to an rt_mutex to avoid priority inversion 2023-01-14 10:16:22 +01:00
ram_core.c pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP 2023-01-14 10:15:14 +01:00
ram.c pstore/ram: Fix error return code in ramoops_probe() 2023-01-14 10:15:14 +01:00
zone.c pstore/zone: Use GFP_ATOMIC to allocate zone buffer 2023-01-14 10:16:26 +01:00