f2fs: fix to do sanity check in update_sit_entry

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[ Upstream commit 36959d18c3 ]

If GET_SEGNO return NULL_SEGNO for some unecpected case,
update_sit_entry will access invalid memory address,
cause system crash. It is better to do sanity check about
GET_SEGNO just like update_segment_mtime & locate_dirty_segment.

Also remove some redundant judgment code.

Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Zhiguo Niu 2024-02-28 19:59:54 +08:00 • committed by Greg Kroah-Hartman

parent b9b019acfb

commit 428fb40bd9

1 changed files with 3 additions and 2 deletions

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fs/f2fs/segment.c

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