aboutsummaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
authorWengang Wang <wen.gang.wang@oracle.com>2010-06-30 20:23:30 +0800
committerJoel Becker <joel.becker@oracle.com>2010-07-12 13:56:14 -0700
commitf471c9df922a80ca9af1d9a490b4aab3f990ec19 (patch)
tree554116c78b9345c7bc0741bbc6be1fd7d5d390d4 /fs
parent693c241a5f6aa01417f5f4caf9f82e60e316398d (diff)
ocfs2/dlm: don't access beyond bitmap size
dlm->recovery_map is defined as unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)]; We should treat O2NM_MAX_NODES as the bit map size in bits. This patches fixes a bit operation that takes O2NM_MAX_NODES + 1 as bitmap size. Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/dlm/dlmrecovery.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index f8b75ce4be70..9dfaac73b36d 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -463,7 +463,7 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
if (dlm->reco.dead_node == O2NM_INVALID_NODE_NUM) {
int bit;
- bit = find_next_bit (dlm->recovery_map, O2NM_MAX_NODES+1, 0);
+ bit = find_next_bit (dlm->recovery_map, O2NM_MAX_NODES, 0);
if (bit >= O2NM_MAX_NODES || bit < 0)
dlm_set_reco_dead_node(dlm, O2NM_INVALID_NODE_NUM);
else

Privacy Policy