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ceph: improve error handling in ceph_mdsmap_decode

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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>
This commit is contained in:
Emil Goode 2013-05-28 16:59:00 +02:00 committed by Sage Weil
parent 912c317d46
commit c213b50b7d
1 changed files with 3 additions and 1 deletions
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4
fs/ceph/mdsmap.c
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@ -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)