diff options
| author | Jeff Layton <jlayton@kernel.org> | 2020-04-08 08:41:38 -0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2020-04-13 19:33:47 +0200 |
| commit | 2a575f138d003fff0f4930b5cfae4a1c46343b8f (patch) | |
| tree | 81df5b30d09f3b0360216ef0842dc0e26c7c77f7 /fs/ceph/file.c | |
| parent | 8ae0299a4b72f2f9ad2b755da91c6a2beabaee62 (diff) | |
ceph: fix potential bad pointer deref in async dirops cb's
The new async dirops callback routines can pass ERR_PTR values to
ceph_mdsc_free_path, which could cause an oops. Make ceph_mdsc_free_path
ignore ERR_PTR values. Also, ensure that the pr_warn messages look sane
even if ceph_mdsc_build_path fails.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/file.c')
| -rw-r--r-- | fs/ceph/file.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 4a5ccbb7e808..afdfca965a7f 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -527,8 +527,8 @@ static void ceph_async_create_cb(struct ceph_mds_client *mdsc, if (result) { struct dentry *dentry = req->r_dentry; - int pathlen; - u64 base; + int pathlen = 0; + u64 base = 0; char *path = ceph_mdsc_build_path(req->r_dentry, &pathlen, &base, 0); |