diff mbox series

iavf: fix double unlock of crit_lock

Message ID 20210824100639.60076-1-sassmann@kpanic.de (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series iavf: fix double unlock of crit_lock | expand

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netdev/cc_maintainers fail 2 blamed authors not CCed: jan.sokolowski@intel.com jakub.pawlak@intel.com; 5 maintainers not CCed: davem@davemloft.net jan.sokolowski@intel.com kuba@kernel.org jesse.brandeburg@intel.com jakub.pawlak@intel.com
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 7 lines checked
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Commit Message

Stefan Assmann Aug. 24, 2021, 10:06 a.m. UTC
The crit_lock mutex could be unlocked twice as reported here
https://lists.osuosl.org/pipermail/intel-wired-lan/Week-of-Mon-20210823/025525.html

Remove the superfluous unlock. Technically the problem was already
present before 5ac49f3c2702 as that commit only replaced the locking
primitive, but no functional change.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 5ac49f3c2702 ("iavf: use mutexes for locking of critical sections")
Fixes: bac8486116b0 ("iavf: Refactor the watchdog state machine")
Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
---
 drivers/net/ethernet/intel/iavf/iavf_main.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 23762a7ef740..cada4e0e40b4 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -1965,7 +1965,6 @@  static void iavf_watchdog_task(struct work_struct *work)
 		}
 		adapter->aq_required = 0;
 		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
-		mutex_unlock(&adapter->crit_lock);
 		queue_delayed_work(iavf_wq,
 				   &adapter->watchdog_task,
 				   msecs_to_jiffies(10));