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qemu-patch-raspberry4
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commit: Add NULL check for overlay_bs 

I can't see how overlay_bs could become NULL with the current code, but
other code in this function already checks it and we can make Coverity
happy with this check, so let's add it.

Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit b1e1fa0c3a)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
stable-2.9
Kevin Wolf 2017-07-10 13:42:35 +02:00 committed by Michael Roth
parent 70da03f10c
commit 2e40aad231
1 changed files with 3 additions and 1 deletions
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4
block/commit.c
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@ -91,7 +91,9 @@ static void commit_complete(BlockJob *job, void *opaque)
/* Make sure overlay_bs and top stay around until bdrv_set_backing_hd() */
bdrv_ref(top);
bdrv_ref(overlay_bs);
if (overlay_bs) {
bdrv_ref(overlay_bs);
}
/* Remove base node parent that still uses BLK_PERM_WRITE/RESIZE before
* the normal backing chain can be restored. */