[PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Lukas Straub posted 1 patch 1 week ago
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git fetch https://github.com/patchew-project/qemu tags/patchew/20200731070604.0c981f41@luklap
Maintainers: Zhang Chen <chen.zhang@intel.com>, Jason Wang <jasowang@redhat.com>, Li Zhijian <lizhijian@cn.fujitsu.com>
net/colo-compare.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

[PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Posted by Lukas Straub 1 week ago
s->iothread is checked for NULL on object creation in colo_compare_complete,
so it's guaranteed not to be NULL.
This resolves a false alert from Coverity (CID 1429969).

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
---
 net/colo-compare.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/net/colo-compare.c b/net/colo-compare.c
index cc15f23dea..2c20de1537 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -1442,9 +1442,7 @@ static void colo_compare_finalize(Object *obj)
         qemu_chr_fe_deinit(&s->chr_notify_dev, false);
     }
 
-    if (s->iothread) {
-        colo_compare_timer_del(s);
-    }
+    colo_compare_timer_del(s);
 
     qemu_bh_delete(s->event_bh);
 
@@ -1470,9 +1468,7 @@ static void colo_compare_finalize(Object *obj)
         g_hash_table_destroy(s->connection_track_table);
     }
 
-    if (s->iothread) {
-        object_unref(OBJECT(s->iothread));
-    }
+    object_unref(OBJECT(s->iothread));
 
     g_free(s->pri_indev);
     g_free(s->sec_indev);
-- 
2.20.1

Re: [PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Posted by Jason Wang 1 week ago
On 2020/7/31 下午1:06, Lukas Straub wrote:
> s->iothread is checked for NULL on object creation in colo_compare_complete,
> so it's guaranteed not to be NULL.
> This resolves a false alert from Coverity (CID 1429969).
>
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> ---
>   net/colo-compare.c | 8 ++------
>   1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/net/colo-compare.c b/net/colo-compare.c
> index cc15f23dea..2c20de1537 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -1442,9 +1442,7 @@ static void colo_compare_finalize(Object *obj)
>           qemu_chr_fe_deinit(&s->chr_notify_dev, false);
>       }
>   
> -    if (s->iothread) {
> -        colo_compare_timer_del(s);
> -    }
> +    colo_compare_timer_del(s);
>   
>       qemu_bh_delete(s->event_bh);
>   
> @@ -1470,9 +1468,7 @@ static void colo_compare_finalize(Object *obj)
>           g_hash_table_destroy(s->connection_track_table);
>       }
>   
> -    if (s->iothread) {
> -        object_unref(OBJECT(s->iothread));
> -    }
> +    object_unref(OBJECT(s->iothread));
>   
>       g_free(s->pri_indev);
>       g_free(s->sec_indev);


Applied.

Thanks


RE: [PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Posted by Zhang, Chen 1 week ago

> -----Original Message-----
> From: Lukas Straub <lukasstraub2@web.de>
> Sent: Friday, July 31, 2020 1:06 PM
> To: qemu-devel <qemu-devel@nongnu.org>
> Cc: Peter Maydell <peter.maydell@linaro.org>; Jason Wang
> <jasowang@redhat.com>; Zhang, Chen <chen.zhang@intel.com>
> Subject: [PATCH] colo-compare: Remove superfluous NULL-pointer checks
> for s->iothread
> 
> s->iothread is checked for NULL on object creation in
> s->colo_compare_complete,
> so it's guaranteed not to be NULL.
> This resolves a false alert from Coverity (CID 1429969).
> 

Reviewed-by: Zhang Chen <chen.zhang@intel.com>

> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> ---
>  net/colo-compare.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/net/colo-compare.c b/net/colo-compare.c index
> cc15f23dea..2c20de1537 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -1442,9 +1442,7 @@ static void colo_compare_finalize(Object *obj)
>          qemu_chr_fe_deinit(&s->chr_notify_dev, false);
>      }
> 
> -    if (s->iothread) {
> -        colo_compare_timer_del(s);
> -    }
> +    colo_compare_timer_del(s);
> 
>      qemu_bh_delete(s->event_bh);
> 
> @@ -1470,9 +1468,7 @@ static void colo_compare_finalize(Object *obj)
>          g_hash_table_destroy(s->connection_track_table);
>      }
> 
> -    if (s->iothread) {
> -        object_unref(OBJECT(s->iothread));
> -    }
> +    object_unref(OBJECT(s->iothread));
> 
>      g_free(s->pri_indev);
>      g_free(s->sec_indev);
> --
> 2.20.1

Re: [PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Posted by Li Qiang 1 week ago
Lukas Straub <lukasstraub2@web.de> 于2020年7月31日周五 下午1:09写道:
>
> s->iothread is checked for NULL on object creation in colo_compare_complete,
> so it's guaranteed not to be NULL.
> This resolves a false alert from Coverity (CID 1429969).
>
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>

Reviewed-by: Li Qiang <liq3ea@gmail.com>

> ---
>  net/colo-compare.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/net/colo-compare.c b/net/colo-compare.c
> index cc15f23dea..2c20de1537 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -1442,9 +1442,7 @@ static void colo_compare_finalize(Object *obj)
>          qemu_chr_fe_deinit(&s->chr_notify_dev, false);
>      }
>
> -    if (s->iothread) {
> -        colo_compare_timer_del(s);
> -    }
> +    colo_compare_timer_del(s);
>
>      qemu_bh_delete(s->event_bh);
>
> @@ -1470,9 +1468,7 @@ static void colo_compare_finalize(Object *obj)
>          g_hash_table_destroy(s->connection_track_table);
>      }
>
> -    if (s->iothread) {
> -        object_unref(OBJECT(s->iothread));
> -    }
> +    object_unref(OBJECT(s->iothread));
>
>      g_free(s->pri_indev);
>      g_free(s->sec_indev);
> --
> 2.20.1

Re: [PATCH] colo-compare: Remove superfluous NULL-pointer checks for s->iothread

Posted by Philippe Mathieu-Daudé 1 week ago
On 7/31/20 7:06 AM, Lukas Straub wrote:
> s->iothread is checked for NULL on object creation in colo_compare_complete,
> so it's guaranteed not to be NULL.
> This resolves a false alert from Coverity (CID 1429969).
> 
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  net/colo-compare.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/net/colo-compare.c b/net/colo-compare.c
> index cc15f23dea..2c20de1537 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -1442,9 +1442,7 @@ static void colo_compare_finalize(Object *obj)
>          qemu_chr_fe_deinit(&s->chr_notify_dev, false);
>      }
>  
> -    if (s->iothread) {
> -        colo_compare_timer_del(s);
> -    }
> +    colo_compare_timer_del(s);
>  
>      qemu_bh_delete(s->event_bh);
>  
> @@ -1470,9 +1468,7 @@ static void colo_compare_finalize(Object *obj)
>          g_hash_table_destroy(s->connection_track_table);
>      }
>  
> -    if (s->iothread) {
> -        object_unref(OBJECT(s->iothread));
> -    }
> +    object_unref(OBJECT(s->iothread));
>  
>      g_free(s->pri_indev);
>      g_free(s->sec_indev);
>