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(parent: 3995881) | 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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 6 Jan 2017 10:16:13 +0000 (11:16 +0100)
commitf655b3575c4746679553a46559a97fb4afb29ce1
treedaa270486a5022a6a51284bedbf565b7db47edfftree | snapshot
parent3995881b0f722cde317c06a098a11d20a9805ee9commit | diff
ext4: add sanity checking to count_overhead()

commit c48ae41bafe31e9a66d8be2ced4e42a6b57fa814 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ext4/super.c diff | blob | history
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