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authorJim Meyering <meyering@redhat.com>2012-08-08 17:11:52 +0200
committerAnand Avati <avati@redhat.com>2012-08-08 23:01:43 -0700
commit94271805633a1ee5487b036dfd81b63c0250df39 (patch)
treeb7f679a4961b07c95dd0738af2483a0b2432a455 /xlators/mgmt/glusterd/src/glusterd-geo-rep.c
parentbfac66f129646bc78f1ed3a7dccb3010114e57aa (diff)
geo-rep: don't leak or segfault upon OOM
In glusterd_urltransform, a failed GF_REALLOC would clobber the would-be-realloc'd buffer, linearr, with a NULL pointer, (thus leaking that memory) and then control would pass to the error-handling code that would attempt to free (via glusterd_urltransform_free) linearr[i], which is almost guaranteed to segfault when linearr is NULL. Change-Id: Ia75bf70fd8ff893a18804d49688048ef96db6037 BUG: 846755 Signed-off-by: Jim Meyering <meyering@redhat.com> Reviewed-on: http://review.gluster.com/3791 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-geo-rep.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-geo-rep.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
index 901e5e1e6c2..db0ab9cc83a 100644
--- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
+++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
@@ -249,13 +249,15 @@ glusterd_urltransform (runner_t *runner, char ***linearrp)
line[len - 1] = '\0';
if (arr_idx == arr_len) {
+ void *p = linearr;
arr_len <<= 1;
- linearr = GF_REALLOC (linearr, arr_len);
- if (!linearr) {
+ p = GF_REALLOC (linearr, arr_len);
+ if (!p) {
GF_FREE (line);
error = _gf_true;
goto out;
}
+ linearr = p;
}
linearr[arr_idx] = line;