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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2018-09-11 15:12:17 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-12 13:15:04 -0700 |
| commit | 12a78b026f870c575d3a98998b25084aac5b3c61 (patch) | |
| tree | 534aa89682961cea04a61a35c9ba357afe85088b /net/tipc | |
| parent | 6b4d24de299be72d96c1f3b318905ccaaf47b904 (diff) | |
| download | linux-12a78b026f870c575d3a98998b25084aac5b3c61.tar.bz2 | |
tipc: check return value of __tipc_dump_start()
When __tipc_dump_start() fails with running out of memory,
we have no reason to continue, especially we should avoid
calling tipc_dump_done().
Fixes: 8f5c5fcf3533 ("tipc: call start and done ops directly in __tipc_nl_compat_dumpit()")
Reported-and-tested-by: syzbot+3f8324abccfbf8c74a9f@syzkaller.appspotmail.com
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/netlink_compat.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index 82f665728382..6376467e78f8 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -185,7 +185,10 @@ static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, return -ENOMEM; buf->sk = msg->dst_sk; - __tipc_dump_start(&cb, msg->net); + if (__tipc_dump_start(&cb, msg->net)) { + kfree_skb(buf); + return -ENOMEM; + } do { int rem; |