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[SCSI] bnx2fc: fix panic in bnx2fc_post_io_req

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System panics while accessing stale pointer - timer_work_queue - in the IO path
before bnx2fc_stop is called. Fix is to destroy the workqueue after the destroy
operation is complete.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Bhanu Prakash Gollapudi 2012-01-23 18:00:46 -08:00 committed by James Bottomley
parent 9f71af2feb
commit 2a7b29c5f2
1 changed files with 3 additions and 2 deletions
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5
drivers/scsi/bnx2fc/bnx2fc_fcoe.c
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@ -1537,6 +1537,7 @@ static void __bnx2fc_destroy(struct bnx2fc_interface *interface)
static int bnx2fc_destroy(struct net_device *netdev)
{
struct bnx2fc_interface *interface = NULL;
struct workqueue_struct *timer_work_queue;
int rc = 0;
rtnl_lock();
@ -1549,9 +1550,9 @@ static int bnx2fc_destroy(struct net_device *netdev)
goto netdev_err;
}
destroy_workqueue(interface->timer_work_queue);
timer_work_queue = interface->timer_work_queue;
__bnx2fc_destroy(interface);
destroy_workqueue(timer_work_queue);
netdev_err:
mutex_unlock(&bnx2fc_dev_lock);