From: Peter Lieven <pl@kamp.de>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, ronniesahlberg@gmail.com,
Peter Lieven <pl@kamp.de>,
stefanha@redhat.com, anthony@codemonkey.ws, pbonzini@redhat.com
Subject: [Qemu-devel] [PATCHv2 15/20] block/get_block_status: avoid segfault if there is no backing_hd
Date: Tue, 17 Sep 2013 15:48:51 +0200 [thread overview]
Message-ID: <1379425736-11326-16-git-send-email-pl@kamp.de> (raw)
In-Reply-To: <1379425736-11326-1-git-send-email-pl@kamp.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Lieven <pl@kamp.de>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 805ee26..461a1d7 100644
--- a/block.c
+++ b/block.c
@@ -3195,7 +3195,7 @@ static int64_t coroutine_fn bdrv_co_get_block_status(BlockDriverState *bs,
if (!(ret & BDRV_BLOCK_DATA)) {
if (bdrv_has_zero_init(bs)) {
ret |= BDRV_BLOCK_ZERO;
- } else {
+ } else if (bs->backing_hd) {
BlockDriverState *bs2 = bs->backing_hd;
int64_t length2 = bdrv_getlength(bs2);
if (length2 >= 0 && sector_num >= (length2 >> BDRV_SECTOR_BITS)) {
--
1.7.9.5
next prev parent reply other threads:[~2013-09-17 13:52 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-17 13:48 [Qemu-devel] [PATCHv2 00/20] block: logical block provisioning enhancements Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 01/20] block: make BdrvRequestFlags public Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 02/20] block: add flags to bdrv_*_write_zeroes Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 03/20] block: introduce BDRV_REQ_MAY_UNMAP request flag Peter Lieven
2013-09-19 12:02 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 04/20] block: introduce bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes Peter Lieven
2013-09-19 14:46 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 05/20] block/raw: add " Peter Lieven
2013-09-19 18:48 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 06/20] block: add discard and write_zeroes limits and alignment to BlockDriverState Peter Lieven
2013-09-19 18:53 ` Eric Blake
2013-09-19 19:11 ` Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 07/20] block: honour alignment and limit in bdrv_co_do_write_zeroes Peter Lieven
2013-09-19 20:07 ` Eric Blake
2013-09-19 21:57 ` Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 08/20] block: honour alignment and limit in bdrv_co_discard Peter Lieven
2013-09-19 20:09 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 09/20] iscsi: simplify iscsi_co_discard Peter Lieven
2013-09-19 20:12 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 10/20] iscsi: set limits in BlockDriverState Peter Lieven
2013-09-19 20:14 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes Peter Lieven
2013-09-19 20:17 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 12/20] iscsi: add bdrv_co_write_zeroes Peter Lieven
2013-09-19 20:19 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 13/20] block: introduce bdrv_zeroize Peter Lieven
2013-09-19 20:26 ` Eric Blake
2013-09-19 21:52 ` Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 14/20] block/get_block_status: set *pnum = 0 on error Peter Lieven
2013-09-17 13:48 ` Peter Lieven [this message]
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 16/20] block/get_block_status: avoid redundant callouts on raw devices Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 17/20] block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks Peter Lieven
2013-09-19 20:30 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 18/20] qemu-img: add support for fully allocated images Peter Lieven
2013-09-19 20:36 ` Eric Blake
2013-09-19 21:50 ` Peter Lieven
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 19/20] qemu-img: conditionally zero out target on convert Peter Lieven
2013-09-19 20:39 ` Eric Blake
2013-09-17 13:48 ` [Qemu-devel] [PATCHv2 20/20] block/raw: copy block limits and alignment information on raw_open Peter Lieven
2013-09-18 8:48 ` Paolo Bonzini
2013-09-19 7:29 ` Peter Lieven
2013-09-19 14:44 ` Paolo Bonzini
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