scsi-disk: Fix crash if underlying host file or disk returns error

Commit 40dce4ee6 "scsi-disk: fix rerror/werror=ignore" introduced a
bug which causes qemu to crash with the assertion error below if the
host file or disk returns an error:

  qemu-system-x86_64: hw/scsi/scsi-bus.c:1374: scsi_req_complete:
  Assertion `req->status == -1' failed.

Kevin Wolf suggested this fix:

  < kwolf> Hm, should the final return false; in that patch
           actually be a return true?
  < kwolf> Because I think he didn't intend to change anything
           except BLOCK_ERROR_ACTION_IGNORE

Buglink: https://bugs.launchpad.net/qemu/+bug/1804323
Fixes: 40dce4ee61c68395f6d463fae792f61b7c003bce
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 6eb258d3f31bdcc63278e451e4ca8c07b78f7b66..0e9027c8f351bf87ab076de24e7e073c4ecacc60 100644 (file)
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -482,7 +482,7 @@ static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
     if (action == BLOCK_ERROR_ACTION_STOP) {
         scsi_req_retry(&r->req);
     }
-    return false;
+    return true;
 }
 
 static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)