ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt

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[ Upstream commit 993bf0f4c3 ]

Determine if bb_fragments is 0 instead of determining bb_free to eliminate
the risk of dividing by zero when the block bitmap is corrupted.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240104142040.2835097-6-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Baokun Li 2024-01-04 22:20:37 +08:00 • committed by Greg Kroah-Hartman

parent a600d7f0c1

commit 8b40eb2e71

1 changed files with 1 additions and 1 deletions

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fs/ext4/mballoc.c

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