* [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
@ 2018-04-03 21:29 ` Gustavo A. R. Silva
0 siblings, 0 replies; 6+ messages in thread
From: Gustavo A. R. Silva @ 2018-04-03 21:29 UTC (permalink / raw)
To: linux-arm-kernel
Add null check on kmalloc() return value in order to prevent
a null pointer dereference.
Addresses-Coverity-ID: 1467429 ("Dereference null return value")
Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 1e9a31f..468321a 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
struct xcast_addr *xaddr;
mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
+ if (unlikely(!mc_list))
+ return;
INIT_LIST_HEAD(&mc_list->list);
netdev_hw_addr_list_for_each(ha, &netdev->mc) {
xaddr = kmalloc(sizeof(*xaddr),
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
@ 2018-04-03 21:29 ` Gustavo A. R. Silva
0 siblings, 0 replies; 6+ messages in thread
From: Gustavo A. R. Silva @ 2018-04-03 21:29 UTC (permalink / raw)
To: Sunil Goutham, Robert Richter
Cc: linux-arm-kernel, netdev, linux-kernel, Gustavo A. R. Silva
Add null check on kmalloc() return value in order to prevent
a null pointer dereference.
Addresses-Coverity-ID: 1467429 ("Dereference null return value")
Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 1e9a31f..468321a 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
struct xcast_addr *xaddr;
mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
+ if (unlikely(!mc_list))
+ return;
INIT_LIST_HEAD(&mc_list->list);
netdev_hw_addr_list_for_each(ha, &netdev->mc) {
xaddr = kmalloc(sizeof(*xaddr),
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
2018-04-03 21:29 ` Gustavo A. R. Silva
@ 2018-04-03 21:47 ` Eric Dumazet
-1 siblings, 0 replies; 6+ messages in thread
From: Eric Dumazet @ 2018-04-03 21:47 UTC (permalink / raw)
To: linux-arm-kernel
On 04/03/2018 02:29 PM, Gustavo A. R. Silva wrote:
> Add null check on kmalloc() return value in order to prevent
> a null pointer dereference.
>
> Addresses-Coverity-ID: 1467429 ("Dereference null return value")
> Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
> drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> index 1e9a31f..468321a 100644
> --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> @@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
> struct xcast_addr *xaddr;
>
> mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
> + if (unlikely(!mc_list))
> + return;
> INIT_LIST_HEAD(&mc_list->list);
> netdev_hw_addr_list_for_each(ha, &netdev->mc) {
> xaddr = kmalloc(sizeof(*xaddr),
>
What about the second kmalloc() right there ?
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
@ 2018-04-03 21:47 ` Eric Dumazet
0 siblings, 0 replies; 6+ messages in thread
From: Eric Dumazet @ 2018-04-03 21:47 UTC (permalink / raw)
To: Gustavo A. R. Silva, Sunil Goutham, Robert Richter
Cc: linux-arm-kernel, netdev, linux-kernel
On 04/03/2018 02:29 PM, Gustavo A. R. Silva wrote:
> Add null check on kmalloc() return value in order to prevent
> a null pointer dereference.
>
> Addresses-Coverity-ID: 1467429 ("Dereference null return value")
> Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
> drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> index 1e9a31f..468321a 100644
> --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> @@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
> struct xcast_addr *xaddr;
>
> mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
> + if (unlikely(!mc_list))
> + return;
> INIT_LIST_HEAD(&mc_list->list);
> netdev_hw_addr_list_for_each(ha, &netdev->mc) {
> xaddr = kmalloc(sizeof(*xaddr),
>
What about the second kmalloc() right there ?
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
2018-04-03 21:47 ` Eric Dumazet
@ 2018-04-03 21:52 ` Gustavo A. R. Silva
-1 siblings, 0 replies; 6+ messages in thread
From: Gustavo A. R. Silva @ 2018-04-03 21:52 UTC (permalink / raw)
To: linux-arm-kernel
On 04/03/2018 04:47 PM, Eric Dumazet wrote:
>
>
> On 04/03/2018 02:29 PM, Gustavo A. R. Silva wrote:
>> Add null check on kmalloc() return value in order to prevent
>> a null pointer dereference.
>>
>> Addresses-Coverity-ID: 1467429 ("Dereference null return value")
>> Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
>> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
>> ---
>> drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> index 1e9a31f..468321a 100644
>> --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> @@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
>> struct xcast_addr *xaddr;
>>
>> mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
>> + if (unlikely(!mc_list))
>> + return;
>> INIT_LIST_HEAD(&mc_list->list);
>> netdev_hw_addr_list_for_each(ha, &netdev->mc) {
>> xaddr = kmalloc(sizeof(*xaddr),
>>
>
> What about the second kmalloc() right there ?
>
Oops. I thought I had it covered.
I'll send v2 with that change shortly.
Thanks for the feedback, Eric.
--
Gustavo
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference
@ 2018-04-03 21:52 ` Gustavo A. R. Silva
0 siblings, 0 replies; 6+ messages in thread
From: Gustavo A. R. Silva @ 2018-04-03 21:52 UTC (permalink / raw)
To: Eric Dumazet, Sunil Goutham, Robert Richter
Cc: linux-arm-kernel, netdev, linux-kernel
On 04/03/2018 04:47 PM, Eric Dumazet wrote:
>
>
> On 04/03/2018 02:29 PM, Gustavo A. R. Silva wrote:
>> Add null check on kmalloc() return value in order to prevent
>> a null pointer dereference.
>>
>> Addresses-Coverity-ID: 1467429 ("Dereference null return value")
>> Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
>> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
>> ---
>> drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> index 1e9a31f..468321a 100644
>> --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
>> @@ -1999,6 +1999,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
>> struct xcast_addr *xaddr;
>>
>> mc_list = kmalloc(sizeof(*mc_list), GFP_ATOMIC);
>> + if (unlikely(!mc_list))
>> + return;
>> INIT_LIST_HEAD(&mc_list->list);
>> netdev_hw_addr_list_for_each(ha, &netdev->mc) {
>> xaddr = kmalloc(sizeof(*xaddr),
>>
>
> What about the second kmalloc() right there ?
>
Oops. I thought I had it covered.
I'll send v2 with that change shortly.
Thanks for the feedback, Eric.
--
Gustavo
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-04-03 21:52 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2018-04-03 21:29 [PATCH] net: thunderx: nicvf_main: Fix potential NULL pointer dereference Gustavo A. R. Silva
2018-04-03 21:29 ` Gustavo A. R. Silva
2018-04-03 21:47 ` Eric Dumazet
2018-04-03 21:47 ` Eric Dumazet
2018-04-03 21:52 ` Gustavo A. R. Silva
2018-04-03 21:52 ` Gustavo A. R. Silva
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.