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From 6c6316c53a1e2ddd34c31ecf5d757646482c4202 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Tue, 5 Nov 2013 14:09:15 +0100
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Subject: [PATCH 62/87] sd: Avoid access to NULL BlockDriverState
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1383660558-32096-22-git-send-email-kwolf@redhat.com>
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Patchwork-id: 55400
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 21/24] sd: Avoid access to NULL BlockDriverState
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Bugzilla: 978402
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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From: Andreas Färber <afaerber@suse.de>
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Commit 4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf (blockdev: Remove IF_*
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check for read-only blockdev_init) added a usage of bdrv_is_read_only()
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to sd_init(), which is called for versatilepb, versatileab and
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xilinx-zynq-a9 machines among others with NULL argument by default,
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causing the new qom-test to fail.
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Add a check to prevent this.
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Suggested-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 794cbc26eb94ce13c75d105eea9ff0afff56e2c2)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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hw/sd/sd.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/sd/sd.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/hw/sd/sd.c b/hw/sd/sd.c
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index e816c78..c9651b9 100644
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--- a/hw/sd/sd.c
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+++ b/hw/sd/sd.c
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@@ -492,7 +492,7 @@ SDState *sd_init(BlockDriverState *bs, bool is_spi)
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{
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SDState *sd;
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- if (bdrv_is_read_only(bs)) {
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+ if (bs && bdrv_is_read_only(bs)) {
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fprintf(stderr, "sd_init: Cannot use read-only drive\n");
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return NULL;
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}
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--
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1.7.1
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