ext4: avoid negative min_clusters in find_group_orlov()

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[ Upstream commit bb0a12c343 ]

min_clusters is signed integer and will be converted to unsigned
integer when compared with unsigned number stats.free_clusters.
If min_clusters is negative, it will be converted to a huge unsigned
value in which case all groups may not meet the actual desired free
clusters.
Set negative min_clusters to 0 to avoid unexpected behavior.

Fixes: ac27a0ec11 ("[PATCH] ext4: initial copy of files from ext3")
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Link: https://patch.msgid.link/20240820132234.2759926-4-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Kemeng Shi 2024-08-20 21:22:30 +08:00 • committed by Greg Kroah-Hartman

parent a2037e06b8

commit bf4cabdf3a

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fs/ext4/ialloc.c

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