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(parent: cd6bb35) | patch
ext4: add sanity checking to count_overhead()
authorTheodore Ts'o <tytso@mit.edu>
Fri, 18 Nov 2016 18:37:47 +0000 (13:37 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 18 Nov 2016 18:37:47 +0000 (13:37 -0500)
commitc48ae41bafe31e9a66d8be2ced4e42a6b57fa814
tree5bce12d4855399ea72f2b89dc108ab4e1c45a556tree
parentcd6bb35bf7f6d7d922509bf50265383a0ceabe96commit | diff
ext4: add sanity checking to count_overhead()

The commit "ext4: sanity check the block and cluster size at mount
time" should prevent any problems, but in case the superblock is
modified while the file system is mounted, add an extra safety check
to make sure we won't overrun the allocated buffer.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
fs/ext4/super.c diff | blob | history
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