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authorNithya Balachandran <nbalacha@redhat.com>2014-11-01 22:16:32 +0530
committerVijay Bellur <vbellur@redhat.com>2014-11-03 03:40:14 -0800
commit0da374020c17256141fb3971ae792b62097d72df (patch)
treebb5b7fc28045a0e6fbfbb15711a8860652591e04 /xlators/cluster
parentadfccb57565ff1af0bbb79efc3cf489c55509aba (diff)
Cluster/DHT : Fixed crash due to null deref
A lookup on a linkto file whose trusted.glusterfs.dht.linkto xattr points to a subvol that is not part of the volume can cause the brick process to segfault due to a null dereference. Modified to check for a non-null value before attempting to access the variable. Change-Id: Ie8f9df058f842cfc0c2b52a8f147e557677386fa BUG: 1159571 Signed-off-by: Nithya Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/9034 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: venkatesh somyajulu <vsomyaju@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/cluster')
-rw-r--r--xlators/cluster/dht/src/dht-common.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index b01ac0d0738..82b527e9141 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -1239,8 +1239,9 @@ dht_lookup_everywhere_done (call_frame_t *frame, xlator_t *this)
"subvolume. But linkto points to "
"different cached subvolume (%s) "
"path %s",
- local->skip_unlink.hash_links_to->name,
- local->loc.path);
+ (local->skip_unlink.hash_links_to ?
+ local->skip_unlink.hash_links_to->name :
+ " <nil>"), local->loc.path);
if (local->skip_unlink.opend_fd_count == 0) {