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| author | Ursula Braun <ubraun@linux.ibm.com> | 2019-11-12 16:03:41 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-12 12:15:29 -0800 |
| commit | 6d6dd528d5af05dc2d0c773951ed68d630a0c3f1 (patch) | |
| tree | 033e0605bed205b839924f045c4a7c552fc08733 | |
| parent | 1d4639567d970de087a893521f7f50a32740b595 (diff) | |
| download | linux-6d6dd528d5af05dc2d0c773951ed68d630a0c3f1.tar.bz2 | |
net/smc: fix refcount non-blocking connect() -part 2
If an SMC socket is immediately terminated after a non-blocking connect()
has been called, a memory leak is possible.
Due to the sock_hold move in
commit 301428ea3708 ("net/smc: fix refcounting for non-blocking connect()")
an extra sock_put() is needed in smc_connect_work(), if the internal
TCP socket is aborted and cancels the sk_stream_wait_connect() of the
connect worker.
Reported-by: syzbot+4b73ad6fc767e576e275@syzkaller.appspotmail.com
Fixes: 301428ea3708 ("net/smc: fix refcounting for non-blocking connect()")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/smc/af_smc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 47946f489fd4..8edf1619f0e4 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -796,6 +796,7 @@ static void smc_connect_work(struct work_struct *work) smc->sk.sk_err = EPIPE; else if (signal_pending(current)) smc->sk.sk_err = -sock_intr_errno(timeo); + sock_put(&smc->sk); /* passive closing */ goto out; } |