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ceph: fix bad pointer dereference in ceph_fill_trace 

We dereference *in a few lines down, but only set it on rename.  It is
apparently pretty rare for this to trigger, but I have been hitting it
with a clustered MDSs.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-11-06 12:41:16 -07:00
parent df9f86faf3
commit d8b16b3d1c
1 changed files with 2 additions and 1 deletions
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3
fs/ceph/inode.c
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@ -1055,7 +1055,8 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
ininfo = rinfo->targeti.in;
vino.ino = le64_to_cpu(ininfo->ino);
vino.snap = le64_to_cpu(ininfo->snapid);
if (!dn->d_inode) {
in = dn->d_inode;
if (!in) {
in = ceph_get_inode(sb, vino);
if (IS_ERR(in)) {
pr_err("fill_trace bad get_inode "