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] [PATCHv3 15/20] block/get_block_status: avoid segfault if there is no backing_hd
Date: Tue, 24 Sep 2013 15:35:09 +0200 [thread overview]
Message-ID: <1380029714-5239-16-git-send-email-pl@kamp.de> (raw)
In-Reply-To: <1380029714-5239-1-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 3499c90..3bf1163 100644
--- a/block.c
+++ b/block.c
@@ -3266,7 +3266,7 @@ 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:[~2013-09-24 13:38 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-24 13:34 [Qemu-devel] [PATCHv3 00/20] block: logical block provisioning enhancements Peter Lieven
2013-09-24 13:34 ` [Qemu-devel] [PATCHv3 01/20] block: make BdrvRequestFlags public Peter Lieven
2013-09-24 13:34 ` [Qemu-devel] [PATCHv3 02/20] block: add flags to bdrv_*_write_zeroes Peter Lieven
2013-10-02 15:32 ` Eric Blake
2013-09-24 13:34 ` [Qemu-devel] [PATCHv3 03/20] block: introduce BDRV_REQ_MAY_UNMAP request flag Peter Lieven
2013-09-24 13:34 ` [Qemu-devel] [PATCHv3 04/20] block: introduce bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes Peter Lieven
2013-10-02 15:41 ` Eric Blake
2013-09-24 13:34 ` [Qemu-devel] [PATCHv3 05/20] block/raw: add " Peter Lieven
2013-10-02 15:43 ` Eric Blake
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 06/20] block: add BlockLimits structure to BlockDriverState Peter Lieven
2013-10-02 15:53 ` Eric Blake
2013-10-07 8:10 ` Stefan Hajnoczi
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 07/20] block: honour BlockLimits in bdrv_co_do_write_zeroes Peter Lieven
2013-10-02 16:37 ` Eric Blake
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 08/20] block: honour BlockLimits in bdrv_co_discard Peter Lieven
2013-10-02 16:41 ` Eric Blake
2013-10-07 8:29 ` Stefan Hajnoczi
2013-10-07 8:36 ` Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 09/20] iscsi: simplify iscsi_co_discard Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 10/20] iscsi: set limits in BlockDriverState Peter Lieven
2013-10-02 16:43 ` Eric Blake
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes Peter Lieven
2013-10-02 16:45 ` Eric Blake
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 12/20] iscsi: add bdrv_co_write_zeroes Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 13/20] block: introduce bdrv_zeroize Peter Lieven
2013-10-02 16:51 ` Eric Blake
2013-10-07 8:34 ` Stefan Hajnoczi
2013-10-07 8:39 ` Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 14/20] block/get_block_status: set *pnum = 0 on error Peter Lieven
2013-09-24 13:35 ` Peter Lieven [this message]
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 16/20] block/get_block_status: avoid redundant callouts on raw devices Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 17/20] block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 18/20] qemu-img: add support for fully allocated images Peter Lieven
2013-10-02 17:01 ` Eric Blake
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 19/20] qemu-img: conditionally zero out target on convert Peter Lieven
2013-09-24 13:35 ` [Qemu-devel] [PATCHv3 20/20] block/raw: copy BlockLimits on raw_open Peter Lieven
2013-10-02 17:11 ` Eric Blake
2013-10-07 8:38 ` Stefan Hajnoczi
2013-10-07 8:40 ` Peter Lieven
2013-10-07 8:42 ` [Qemu-devel] [PATCHv3 00/20] block: logical block provisioning enhancements Stefan Hajnoczi
2013-10-07 8:47 ` Peter Lieven
2013-10-07 9:42 ` Paolo Bonzini
2013-10-08 7:02 ` Stefan Hajnoczi
2013-10-08 8:01 ` Peter Lieven
2013-10-08 8:59 ` Stefan Hajnoczi
2013-10-08 9:12 ` Peter Lieven
2013-10-08 9:26 ` Stefan Hajnoczi
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