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28 lines
902 B
28 lines
902 B
From: Dominic Curran <dominic.curran@citrix.com>
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Subject: blktap: Fix reference to freed struct request
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Patch-mainline: tbd
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The request will be freed by the call to __blktap_end_rq(), so rq->q
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is invalid before spin_unlock_irq().
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Signed-off-by: Dominic Curran <dominic.curran@citrix.com>
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Acked-by: Daniel Stodden <daniel.stodden@citrix.com>
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Acked-by: jbeulich@novell.com
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--- head-2011-03-11.orig/drivers/xen/blktap2-new/device.c 2011-02-24 16:31:17.000000000 +0100
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+++ head-2011-03-11/drivers/xen/blktap2-new/device.c 2011-03-11 00:00:00.000000000 +0100
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@@ -135,9 +135,11 @@ __blktap_end_rq(struct request *rq, int
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static inline void
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blktap_end_rq(struct request *rq, int err)
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{
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- spin_lock_irq(rq->q->queue_lock);
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+ struct request_queue *q = rq->q;
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+
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+ spin_lock_irq(q->queue_lock);
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__blktap_end_rq(rq, err);
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- spin_unlock_irq(rq->q->queue_lock);
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+ spin_unlock_irq(q->queue_lock);
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}
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void
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