From: Emil Goode Date: Tue, 28 May 2013 14:59:00 +0000 (+0200) Subject: ceph: improve error handling in ceph_mdsmap_decode X-Git-Tag: next-20130607~95^2~7 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5c1934953536b340cc2ff1924e0b16a70d2c948a;p=karo-tx-linux.git 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 Signed-off-by: Sage Weil --- 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)