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ceph: silence a checker warning in mdsc_show()

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The problem is that if ceph_mdsc_build_path() fails then we set "path"
to NULL and the "pathlen" variable is uninitialized.  Then we call
ceph_mdsc_free_path(path, pathlen) to clean up.  Since "path" is NULL,
the function is a no-op but Smatch and UBSan still complain that
"pathlen" is uninitialized.

This patch doesn't change run time, it just silence the warnings.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Dan Carpenter 2019-05-09 13:11:25 +03:00 committed by Ilya Dryomov
parent 97a385e558
commit 13c41737b9
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/debugfs.c
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@ -52,7 +52,7 @@ static int mdsc_show(struct seq_file *s, void *p)
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
struct rb_node *rp;
int pathlen;
int pathlen = 0;
u64 pathbase;
char *path;