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block/iscsi: fix deadlock on scsi check condition 

the retry logic was broken because the complete status
of the task structure was not reset. this resulted in
an infinite loop retrying the command over and over.

CC: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Lieven 2014-02-18 13:08:39 +01:00 committed by Paolo Bonzini
parent 7ef8cf9a08
commit 837c390137
1 changed files with 8 additions and 1 deletions
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9
block/iscsi.c
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@ -145,12 +145,13 @@ iscsi_co_generic_cb(struct iscsi_context *iscsi, int status,
if (iTask->retries-- > 0 && status == SCSI_STATUS_CHECK_CONDITION
&& task->sense.key == SCSI_SENSE_UNIT_ATTENTION) {
error_report("iSCSI CheckCondition: %s", iscsi_get_error(iscsi));
iTask->do_retry = 1;
goto out;
}
if (status != SCSI_STATUS_GOOD) {
error_report("iSCSI: Failure. %s", iscsi_get_error(iscsi));
error_report("iSCSI Failure: %s", iscsi_get_error(iscsi));
}
out:
@ -325,6 +326,7 @@ retry:
}
if (iTask.do_retry) {
iTask.complete = 0;
goto retry;
}
@ -399,6 +401,7 @@ retry:
}
if (iTask.do_retry) {
iTask.complete = 0;
goto retry;
}
@ -433,6 +436,7 @@ retry:
}
if (iTask.do_retry) {
iTask.complete = 0;
goto retry;
}
@ -683,6 +687,7 @@ retry:
scsi_free_scsi_task(iTask.task);
iTask.task = NULL;
}
iTask.complete = 0;
goto retry;
}
@ -767,6 +772,7 @@ retry:
}
if (iTask.do_retry) {
iTask.complete = 0;
goto retry;
}
@ -836,6 +842,7 @@ retry:
}
if (iTask.do_retry) {
iTask.complete = 0;
goto retry;
}