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GFS2: Fix an unchecked error from gfs2_rs_alloc 

Check the return value of gfs2_rs_alloc(ip) and avoid a possible null
pointer dereference.

Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Andrew Price 2012-10-12 16:45:08 +01:00 committed by Steven Whitehouse
parent ddffeb8c4d
commit aaaf68c562
1 changed files with 5 additions and 2 deletions
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7
fs/gfs2/quota.c
View File

@ -497,8 +497,11 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
struct gfs2_quota_data **qd;
int error;
if (ip->i_res == NULL)
gfs2_rs_alloc(ip);
if (ip->i_res == NULL) {
error = gfs2_rs_alloc(ip);
if (error)
return error;
}
qd = ip->i_res->rs_qa_qd;