From: Liu Bo <bo.li.liu@oracle.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 1/6] Btrfs: check for NULL pointer in updating reloc roots
Date: Tue, 5 Mar 2013 00:25:36 +0800 [thread overview]
Message-ID: <1362414341-17306-2-git-send-email-bo.li.liu@oracle.com> (raw)
In-Reply-To: <1362414341-17306-1-git-send-email-bo.li.liu@oracle.com>
Add a check for NULL pointer to avoid invalid reference.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
fs/btrfs/relocation.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 300e09a..d9be73b 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1269,6 +1269,8 @@ static int __update_reloc_root(struct btrfs_root *root, int del)
}
spin_unlock(&rc->reloc_root_tree.lock);
+ if (!node)
+ return 0;
BUG_ON((struct btrfs_root *)node->data != root);
if (!del) {
--
1.7.7
next prev parent reply other threads:[~2013-03-04 16:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-04 16:25 [PATCH 0/6] Several bugfixes Liu Bo
2013-03-04 16:25 ` Liu Bo [this message]
2013-03-04 16:25 ` [PATCH 2/6] Btrfs: build up error handling for merge_reloc_roots Liu Bo
2013-03-18 14:16 ` David Sterba
2013-03-19 12:16 ` Liu Bo
2013-03-28 14:15 ` David Sterba
2013-03-04 16:25 ` [PATCH 3/6] Btrfs: free all recorded tree blocks on error Liu Bo
2013-03-04 16:25 ` [PATCH 4/6] Btrfs: do not BUG_ON in prepare_to_reloc Liu Bo
2013-03-04 16:25 ` [PATCH 5/6] Btrfs: do not BUG_ON on aborted situation Liu Bo
2013-03-04 16:25 ` [PATCH 6/6] Btrfs: avoid deadlock on transaction waiting list Liu Bo
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