ext4: set type of ac_groups_linear_remaining to __u32 to avoid overflow

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Now ac_groups_linear_remaining is of type __u16 and s_mb_max_linear_groups
is of type unsigned int, so an overflow occurs when setting a value above
65535 through the mb_max_linear_groups sysfs interface. Therefore, the
type of ac_groups_linear_remaining is set to __u32 to avoid overflow.

Fixes: 196e402adf ("ext4: improve cr 0 / cr 1 group scanning")
CC: stable@kernel.org
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240319113325.3110393-8-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Baokun Li 2024-03-19 19:33:23 +08:00 • committed by Theodore Ts'o

parent 63bfe84105

commit 9a9f3a9842

1 changed files with 1 additions and 1 deletions

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fs/ext4/mballoc.h

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