ext4: fix possible use-after-free in ext4_remove_li_request()

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We need to take reference to the s_li_request after we take a mutex,
because it might be freed since then, hence result in accessing old
already freed memory. Also we should protect the whole
ext4_remove_li_request() because ext4_li_info might be in the process of
being freed in ext4_lazyinit_thread().

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>

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Lukas Czerner 2011-05-20 13:55:29 -04:00 • committed by Theodore Ts'o

parent 51ce651156

commit 1bb933fb1f

1 changed files with 6 additions and 4 deletions

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fs/ext4/super.c

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