* [Qemu-devel] [PATCH] blkdebug: Delete BH in bdrv_aio_cancel
@ 2014-08-22 4:45 Fam Zheng
2014-08-22 9:07 ` Kevin Wolf
0 siblings, 1 reply; 2+ messages in thread
From: Fam Zheng @ 2014-08-22 4:45 UTC (permalink / raw)
To: qemu-devel; +Cc: Kevin Wolf, Stefan Hajnoczi
Otherwise error_callback_bh will access the already released acb.
Signed-off-by: Fam Zheng <famz@redhat.com>
---
block/blkdebug.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 1586ed9..dac7666 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -449,6 +449,10 @@ static void error_callback_bh(void *opaque)
static void blkdebug_aio_cancel(BlockDriverAIOCB *blockacb)
{
BlkdebugAIOCB *acb = container_of(blockacb, BlkdebugAIOCB, common);
+ if (acb->bh) {
+ qemu_bh_delete(acb->bh);
+ acb->bh = NULL;
+ }
qemu_aio_release(acb);
}
--
2.0.3
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2014-08-22 4:45 [Qemu-devel] [PATCH] blkdebug: Delete BH in bdrv_aio_cancel Fam Zheng
2014-08-22 9:07 ` Kevin Wolf
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