* [PATCH] block/amend: Check whether the node exists
@ 2020-07-10 9:50 Max Reitz
2020-07-12 11:47 ` Maxim Levitsky
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Max Reitz @ 2020-07-10 9:50 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Maxim Levitsky, qemu-devel, Max Reitz
We should check whether the user-specified node-name actually refers to
a node. The simplest way to do that is to use bdrv_lookup_bs() instead
of bdrv_find_node() (the former wraps the latter, and produces an error
message if necessary).
Reported-by: Coverity (CID 1430268)
Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block/amend.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/block/amend.c b/block/amend.c
index f4612dcf08..392df9ef83 100644
--- a/block/amend.c
+++ b/block/amend.c
@@ -69,8 +69,12 @@ void qmp_x_blockdev_amend(const char *job_id,
BlockdevAmendJob *s;
const char *fmt = BlockdevDriver_str(options->driver);
BlockDriver *drv = bdrv_find_format(fmt);
- BlockDriverState *bs = bdrv_find_node(node_name);
+ BlockDriverState *bs;
+ bs = bdrv_lookup_bs(NULL, node_name, errp);
+ if (!bs) {
+ return;
+ }
if (!drv) {
error_setg(errp, "Block driver '%s' not found or not supported", fmt);
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] block/amend: Check whether the node exists
2020-07-10 9:50 [PATCH] block/amend: Check whether the node exists Max Reitz
@ 2020-07-12 11:47 ` Maxim Levitsky
2020-07-23 17:56 ` Peter Maydell
2020-07-24 7:08 ` Max Reitz
2 siblings, 0 replies; 5+ messages in thread
From: Maxim Levitsky @ 2020-07-12 11:47 UTC (permalink / raw)
To: Max Reitz, qemu-block; +Cc: Kevin Wolf, qemu-devel
On Fri, 2020-07-10 at 11:50 +0200, Max Reitz wrote:
> We should check whether the user-specified node-name actually refers to
> a node. The simplest way to do that is to use bdrv_lookup_bs() instead
> of bdrv_find_node() (the former wraps the latter, and produces an error
> message if necessary).
>
> Reported-by: Coverity (CID 1430268)
> Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
> block/amend.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/block/amend.c b/block/amend.c
> index f4612dcf08..392df9ef83 100644
> --- a/block/amend.c
> +++ b/block/amend.c
> @@ -69,8 +69,12 @@ void qmp_x_blockdev_amend(const char *job_id,
> BlockdevAmendJob *s;
> const char *fmt = BlockdevDriver_str(options->driver);
> BlockDriver *drv = bdrv_find_format(fmt);
> - BlockDriverState *bs = bdrv_find_node(node_name);
> + BlockDriverState *bs;
>
> + bs = bdrv_lookup_bs(NULL, node_name, errp);
> + if (!bs) {
> + return;
> + }
>
> if (!drv) {
> error_setg(errp, "Block driver '%s' not found or not supported", fmt);
Yep, this looks like a real bug, sorry about that.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Best regards,
Maxim Levitsky
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] block/amend: Check whether the node exists
2020-07-10 9:50 [PATCH] block/amend: Check whether the node exists Max Reitz
2020-07-12 11:47 ` Maxim Levitsky
@ 2020-07-23 17:56 ` Peter Maydell
2020-07-24 7:01 ` Max Reitz
2020-07-24 7:08 ` Max Reitz
2 siblings, 1 reply; 5+ messages in thread
From: Peter Maydell @ 2020-07-23 17:56 UTC (permalink / raw)
To: Max Reitz; +Cc: Kevin Wolf, QEMU Developers, Qemu-block, Maxim Levitsky
On Fri, 10 Jul 2020 at 10:51, Max Reitz <mreitz@redhat.com> wrote:
>
> We should check whether the user-specified node-name actually refers to
> a node. The simplest way to do that is to use bdrv_lookup_bs() instead
> of bdrv_find_node() (the former wraps the latter, and produces an error
> message if necessary).
>
> Reported-by: Coverity (CID 1430268)
> Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe
> Signed-off-by: Max Reitz <mreitz@redhat.com>
Hi; has this patch got lost? (I'm just running through the Coverity
issues marked as fix-submitted to check the patches made it into
master, and it looks like this one hasn't yet.)
thanks
-- PMM
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] block/amend: Check whether the node exists
2020-07-23 17:56 ` Peter Maydell
@ 2020-07-24 7:01 ` Max Reitz
0 siblings, 0 replies; 5+ messages in thread
From: Max Reitz @ 2020-07-24 7:01 UTC (permalink / raw)
To: Peter Maydell; +Cc: Kevin Wolf, QEMU Developers, Qemu-block, Maxim Levitsky
[-- Attachment #1.1: Type: text/plain, Size: 816 bytes --]
On 23.07.20 19:56, Peter Maydell wrote:
> On Fri, 10 Jul 2020 at 10:51, Max Reitz <mreitz@redhat.com> wrote:
>>
>> We should check whether the user-specified node-name actually refers to
>> a node. The simplest way to do that is to use bdrv_lookup_bs() instead
>> of bdrv_find_node() (the former wraps the latter, and produces an error
>> message if necessary).
>>
>> Reported-by: Coverity (CID 1430268)
>> Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe
>> Signed-off-by: Max Reitz <mreitz@redhat.com>
>
> Hi; has this patch got lost? (I'm just running through the Coverity
> issues marked as fix-submitted to check the patches made it into
> master, and it looks like this one hasn't yet.)
Well, not strictly speaking lost, but I did forget to merge it, yes.
Thanks for the reminder!
Max
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] block/amend: Check whether the node exists
2020-07-10 9:50 [PATCH] block/amend: Check whether the node exists Max Reitz
2020-07-12 11:47 ` Maxim Levitsky
2020-07-23 17:56 ` Peter Maydell
@ 2020-07-24 7:08 ` Max Reitz
2 siblings, 0 replies; 5+ messages in thread
From: Max Reitz @ 2020-07-24 7:08 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, qemu-devel, Maxim Levitsky
[-- Attachment #1.1: Type: text/plain, Size: 550 bytes --]
On 10.07.20 11:50, Max Reitz wrote:
> We should check whether the user-specified node-name actually refers to
> a node. The simplest way to do that is to use bdrv_lookup_bs() instead
> of bdrv_find_node() (the former wraps the latter, and produces an error
> message if necessary).
>
> Reported-by: Coverity (CID 1430268)
> Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
> block/amend.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
Applied to my block branch.
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-07-24 7:09 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-10 9:50 [PATCH] block/amend: Check whether the node exists Max Reitz
2020-07-12 11:47 ` Maxim Levitsky
2020-07-23 17:56 ` Peter Maydell
2020-07-24 7:01 ` Max Reitz
2020-07-24 7:08 ` Max Reitz
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.