* [dpdk-dev] [PATCH] vhost: fix unchecked return value
@ 2017-09-22 12:17 Kuba Kozak
2017-10-02 14:18 ` Jastrzebski, MichalX K
2017-10-09 3:10 ` Yuanhan Liu
0 siblings, 2 replies; 3+ messages in thread
From: Kuba Kozak @ 2017-09-22 12:17 UTC (permalink / raw)
To: yliu, maxime.coquelin; +Cc: dev, Kuba Kozak, jan.wickbom, stable
Add return value check for poll() call.
Coverity issue: 140740
Fixes: 59317cef249c ("vhost: allow many vhost-user ports")
Cc: jan.wickbom@ericsson.com
Cc: stable@dpdk.org
Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
---
lib/librte_vhost/fd_man.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/librte_vhost/fd_man.c b/lib/librte_vhost/fd_man.c
index 2ceacc9..4c6fed4 100644
--- a/lib/librte_vhost/fd_man.c
+++ b/lib/librte_vhost/fd_man.c
@@ -222,6 +222,7 @@ fdset_event_dispatch(void *arg)
int remove1, remove2;
int need_shrink;
struct fdset *pfdset = arg;
+ int val;
if (pfdset == NULL)
return NULL;
@@ -239,7 +240,9 @@ fdset_event_dispatch(void *arg)
numfds = pfdset->num;
pthread_mutex_unlock(&pfdset->fd_mutex);
- poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
+ val = poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
+ if (val < 0)
+ continue;
need_shrink = 0;
for (i = 0; i < numfds; i++) {
--
2.7.4
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] vhost: fix unchecked return value
2017-09-22 12:17 [dpdk-dev] [PATCH] vhost: fix unchecked return value Kuba Kozak
@ 2017-10-02 14:18 ` Jastrzebski, MichalX K
2017-10-09 3:10 ` Yuanhan Liu
1 sibling, 0 replies; 3+ messages in thread
From: Jastrzebski, MichalX K @ 2017-10-02 14:18 UTC (permalink / raw)
To: Kozak, KubaX, yliu, maxime.coquelin
Cc: dev, Kozak, KubaX, jan.wickbom, stable
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Kuba Kozak
> Sent: Friday, September 22, 2017 2:18 PM
> To: yliu@fridaylinux.org; maxime.coquelin@redhat.com
> Cc: dev@dpdk.org; Kozak, KubaX <kubax.kozak@intel.com>;
> jan.wickbom@ericsson.com; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] vhost: fix unchecked return value
>
> Add return value check for poll() call.
>
> Coverity issue: 140740
> Fixes: 59317cef249c ("vhost: allow many vhost-user ports")
> Cc: jan.wickbom@ericsson.com
> Cc: stable@dpdk.org
>
> Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
> ---
> lib/librte_vhost/fd_man.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_vhost/fd_man.c b/lib/librte_vhost/fd_man.c
> index 2ceacc9..4c6fed4 100644
> --- a/lib/librte_vhost/fd_man.c
> +++ b/lib/librte_vhost/fd_man.c
> @@ -222,6 +222,7 @@ fdset_event_dispatch(void *arg)
> int remove1, remove2;
> int need_shrink;
> struct fdset *pfdset = arg;
> + int val;
>
> if (pfdset == NULL)
> return NULL;
> @@ -239,7 +240,9 @@ fdset_event_dispatch(void *arg)
> numfds = pfdset->num;
> pthread_mutex_unlock(&pfdset->fd_mutex);
>
> - poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
> + val = poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
> + if (val < 0)
> + continue;
>
> need_shrink = 0;
> for (i = 0; i < numfds; i++) {
> --
> 2.7.4
Hi Yu / Maxime,
I would like to ask for a feedback regarding proposed fix.
If everything is ok with it, please send acked-by.
Best regards
Michal.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] vhost: fix unchecked return value
2017-09-22 12:17 [dpdk-dev] [PATCH] vhost: fix unchecked return value Kuba Kozak
2017-10-02 14:18 ` Jastrzebski, MichalX K
@ 2017-10-09 3:10 ` Yuanhan Liu
1 sibling, 0 replies; 3+ messages in thread
From: Yuanhan Liu @ 2017-10-09 3:10 UTC (permalink / raw)
To: Kuba Kozak; +Cc: maxime.coquelin, dev, jan.wickbom, stable
On Fri, Sep 22, 2017 at 02:17:40PM +0200, Kuba Kozak wrote:
> Add return value check for poll() call.
>
> Coverity issue: 140740
> Fixes: 59317cef249c ("vhost: allow many vhost-user ports")
> Cc: jan.wickbom@ericsson.com
> Cc: stable@dpdk.org
>
> Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Applied to dpdk-next-virtio.
Thanks.
--yliu
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-09-22 12:17 [dpdk-dev] [PATCH] vhost: fix unchecked return value Kuba Kozak
2017-10-02 14:18 ` Jastrzebski, MichalX K
2017-10-09 3:10 ` Yuanhan Liu
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