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(parent: 956e2a0) | 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 09:40:14 +0000 (10:40 +0100)
commit8084f57bc46894dbe08dac2a09d66553d7513a34
tree9f37838aacc89eddbd654c4c1513889cf491b25ftree | snapshot
parent956e2a0e6779824877822864ad486f08184f1a3ecommit | 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