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| author | Christoph Hellwig <hch@lst.de> | 2009-01-19 02:04:16 +0100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@sgi.com> | 2009-01-19 04:45:11 +0100 |
| commit | b828d8c33867dd6479644c06500975570bfd525c (patch) | |
| tree | 7788c8a92da9c9859cf40fdd0c1c471debf5035c /fs/xfs/xfs_iomap.c | |
| parent | xfs: fix bad_features2 fixups for the root filesystem (diff) | |
| download | linux-b828d8c33867dd6479644c06500975570bfd525c.tar.xz linux-b828d8c33867dd6479644c06500975570bfd525c.zip | |
xfs: sanity check attr fork size
Recently we have quite a few kerneloops reports about dereferencing a NULL
if_data in the attribute fork. From looking over the code this can only
happen if we pass a 0 size argument to xfs_iformat_local. This implies some
sort of corruption and in fact the only mailinglist report about this from
earlier this year was after a powerfail presumably on a system with write
cache and without barriers.
Add a quick sanity check for the attr fork size in xfs_iformat to catch
these early and without an oops.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
0 files changed, 0 insertions, 0 deletions