diff options
| author | Jeff Mahoney <jeffm@suse.com> | 2010-10-14 17:53:37 +0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2010-10-14 17:53:37 +0400 |
| commit | ee52716245877b821f5ddbb3ace85b73084fb450 (patch) | |
| tree | 3d85d8fce3bde7b1601878074cdec622705d1af2 /fs/hfsplus/brec.c | |
| parent | 40de9a7cebc4e0b23cd6863c84c2279f0ccadebb (diff) | |
| download | linux-ee52716245877b821f5ddbb3ace85b73084fb450.tar.xz | |
hfsplus: fix oops on mount with corrupted btree extent records
A particular fsfuzzer run caused an hfs file system to crash on mount. This
is due to a corrupted MDB extent record causing a miscalculation of
HFSPLUS_I(inode)->first_blocks for the extent tree. If the extent records
are zereod out, then it won't trigger the first_blocks special case and
instead falls through to the extent code, which we're in the middle
of initializing.
This patch catches the 0 size extent records, reports the corruption,
and fails the mount.
[hch: ported of commit 47f365eb575735c6b2edf5d08e0d16d26a9c23bd from hfs]
Reported-by: Ramon de Carvalho Valle <rcvalle@linux.vnet.ibm.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/brec.c')
0 files changed, 0 insertions, 0 deletions