net/smc: cancel event worker during device removal
commit ece0d7bd74615773268475b6b64d6f1ebbd4b4c6 upstream.
During IB device removal, cancel the event worker before the device
structure is freed.
Fixes: a4cf0443c414 ("smc: introduce SMC as an IB-client")
Reported-by: syzbot+b297c6825752e7a07272@syzkaller.appspotmail.com
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index c9c192c..d74a71d 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -568,6 +568,7 @@
spin_unlock(&smc_ib_devices.lock);
smc_ib_cleanup_per_ibdev(smcibdev);
ib_unregister_event_handler(&smcibdev->event_handler);
+ cancel_work_sync(&smcibdev->port_event_work);
kfree(smcibdev);
}
