From: Karsten Graul <kgraul@linux.ibm.com>
Date: Tue, 10 Mar 2020 09:33:30 +0100
Subject: net/smc: cancel event worker during device removal
Git-commit: ece0d7bd74615773268475b6b64d6f1ebbd4b4c6
Patch-mainline: v5.6-rc6
References: git-fixes
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>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
net/smc/smc_ib.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -582,6 +582,7 @@ static void smc_ib_remove_dev(struct ib_
smc_smcr_terminate_all(smcibdev);
smc_ib_cleanup_per_ibdev(smcibdev);
ib_unregister_event_handler(&smcibdev->event_handler);
+ cancel_work_sync(&smcibdev->port_event_work);
kfree(smcibdev);
}