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Subject[PATCH 5.4 123/123] net/smc: cancel event worker during device removal
Date
From: Karsten Graul <kgraul@linux.ibm.com>

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>

---
net/smc/smc_ib.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -568,6 +568,7 @@ static void smc_ib_remove_dev(struct ib_
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);
}


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