Re: [net-next 1/1] tipc: fix a potental access after delete in tipc_sk_join()

From: Jon Maloy <redacted>
Date: Wed, 10 Jan 2018 21:08:50 +0100

In commit d12d2e12cec2 "tipc: send out join messages as soon as new
member is discovered") we added a call to the function tipc_group_join()
without considering the case that the preceding tipc_sk_publish() might
have failed, and the group item already deleted.

We fix this by returning from tipc_sk_join() directly after the
failed tipc_sk_publish.

Reported-by: syzbot+e3eeae78ea88b8d6d858@syzkaller.appspotmail.com
Signed-off-by: Jon Maloy <redacted>

Applied, thanks Jon.

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