mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-23 02:51:47 +00:00
Code Issues Releases Wiki Activity

xfs: xfs_alloc_get_rec should return EFSCORRUPTED for obvious bnobt corruption

Browse source 
Return -EFSCORRUPTED when the bnobt/cntbt return obviously corrupt
values, rather than letting them bounce around in the internal code.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-06-03 16:10:14 -07:00
parent b3986010ce
commit a37f7b127e
1 changed files with 8 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
fs/xfs/libxfs/xfs_alloc.c
View file

@ -231,10 +231,14 @@ xfs_alloc_get_rec(
int error;
error = xfs_btree_get_rec(cur, &rec, stat);
if (!error && *stat == 1) {
*bno = be32_to_cpu(rec->alloc.ar_startblock);
*len = be32_to_cpu(rec->alloc.ar_blockcount);
}
if (error || !(*stat))
return error;
if (rec->alloc.ar_blockcount == 0)
return -EFSCORRUPTED;
*bno = be32_to_cpu(rec->alloc.ar_startblock);
*len = be32_to_cpu(rec->alloc.ar_blockcount);
return error;
}