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authorEmil Goode <emilgoode@gmail.com>2013-05-28 16:59:00 +0200
committerSage Weil <sage@inktank.com>2013-07-01 18:52:02 +0200
commitc213b50b7dcbf06abcfbf1e4eee5b76586718bd9 (patch)
tree66a2ae00a8e9e6e619d4722b5c2a0e53380765fd /fs/ceph/mdsmap.c
parentrbd: drop original request earlier for existence check (diff)
downloadlinux-c213b50b7dcbf06abcfbf1e4eee5b76586718bd9.tar.xz
linux-c213b50b7dcbf06abcfbf1e4eee5b76586718bd9.zip
ceph: improve error handling in ceph_mdsmap_decode
This patch makes the following improvements to the error handling in the ceph_mdsmap_decode function: - Add a NULL check for return value from kcalloc - Make use of the variable err Signed-off-by: Emil Goode <emilgoode@gmail.com> Signed-off-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph/mdsmap.c')
-rw-r--r--fs/ceph/mdsmap.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 9278dec9e940..d4d38977dcbb 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -138,6 +138,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
m->m_info[mds].export_targets =
kcalloc(num_export_targets, sizeof(u32),
GFP_NOFS);
+ if (m->m_info[mds].export_targets == NULL)
+ goto badmem;
for (j = 0; j < num_export_targets; j++)
m->m_info[mds].export_targets[j] =
ceph_decode_32(&pexport_targets);
@@ -170,7 +172,7 @@ bad:
DUMP_PREFIX_OFFSET, 16, 1,
start, end - start, true);
ceph_mdsmap_destroy(m);
- return ERR_PTR(-EINVAL);
+ return ERR_PTR(err);
}
void ceph_mdsmap_destroy(struct ceph_mdsmap *m)