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(parent: 304749c) | patch
ext4: correct grp validation in ext4_mb_good_group
authorKemeng Shi <shikemeng@huaweicloud.com>
Tue, 1 Aug 2023 14:31:55 +0000 (22:31 +0800)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 3 Aug 2023 14:47:29 +0000 (10:47 -0400)
commita9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93
treef4747c211ee7f5a627e936ab730f185408428745tree | snapshot
parent304749c0d5e216479ea4d553ad04ba1390d5c707commit | diff
ext4: correct grp validation in ext4_mb_good_group

Group corruption check will access memory of grp and will trigger kernel
crash if grp is NULL. So do NULL check before corruption check.

Fixes: 5354b2af3406 ("ext4: allow ext4_get_group_info() to fail")
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20230801143204.2284343-2-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/mballoc.c diff | blob | history
Domain: System / Kernel;