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block/iscsi: fix deadlock on scsi check condition

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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
View file

@ -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;
}