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From 8bb562cbc4c70ea2d338db0e86d99b0578a73955 Mon Sep 17 00:00:00 2001
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From: Fam Zheng <famz@redhat.com>
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Date: Fri, 4 Apr 2014 05:55:59 +0200
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Subject: [PATCH 04/12] block/iscsi: fix segfault if writesame fails
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RH-Author: Fam Zheng <famz@redhat.com>
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Message-id: <1396590962-25815-5-git-send-email-famz@redhat.com>
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Patchwork-id: 58341
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O-Subject: [RHEL-7 0day qemu-kvm PATCH 4/7] block/iscsi: fix segfault if writesame fails
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Bugzilla: 1083413
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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From: Peter Lieven <pl@kamp.de>
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commit fa6252b0 introduced a segfault because it tries
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to read iTask.task->sense after iTask.task has been
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freed.
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Signed-off-by: Peter Lieven <pl@kamp.de>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit d9738fd2463f71530d8d92fbb52ebdd1d78074fc)
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Signed-off-by: Fam Zheng <famz@redhat.com>
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---
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block/iscsi.c | 17 +++++++++--------
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1 file changed, 9 insertions(+), 8 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/iscsi.c | 17 +++++++++--------
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1 files changed, 9 insertions(+), 8 deletions(-)
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diff --git a/block/iscsi.c b/block/iscsi.c
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index d3c8802..4a535e3 100644
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--- a/block/iscsi.c
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+++ b/block/iscsi.c
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@@ -1010,6 +1010,15 @@ retry:
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qemu_coroutine_yield();
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}
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+ if (iTask.status == SCSI_STATUS_CHECK_CONDITION &&
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+ iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST &&
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+ iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE) {
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+ /* WRITE SAME is not supported by the target */
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+ iscsilun->has_write_same = false;
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+ scsi_free_scsi_task(iTask.task);
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+ return -ENOTSUP;
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+ }
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+
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if (iTask.task != NULL) {
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scsi_free_scsi_task(iTask.task);
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iTask.task = NULL;
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@@ -1020,14 +1029,6 @@ retry:
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}
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if (iTask.status != SCSI_STATUS_GOOD) {
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- if (iTask.status == SCSI_STATUS_CHECK_CONDITION &&
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- iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST &&
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- iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE) {
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- /* WRITE SAME is not supported by the target */
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- iscsilun->has_write_same = false;
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- return -ENOTSUP;
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- }
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-
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return -EIO;
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}
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--
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1.7.1
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