> On 05-Jan-2017, at 9:35 PM, David Miller wrote:
>
> From: Hariprasad Shenai
> Date: Thu, 5 Jan 2017 11:23:10 +0530
>
>> @@ -844,6 +848,10 @@ struct adapter {
>>struct work_struct db_drop_task;
>>bool tid_release_task_busy;
>>
>> +/* lock for mailbox cmd list */
>> +spinlo
From: Hariprasad Shenai
Date: Thu, 5 Jan 2017 11:23:10 +0530
> @@ -844,6 +848,10 @@ struct adapter {
> struct work_struct db_drop_task;
> bool tid_release_task_busy;
>
> + /* lock for mailbox cmd list */
> + spinlock_t mbox_lock;
> + struct mbox_list mlist;
> +
...
> @
Hi Hariprasad,
[auto build test ERROR on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Hariprasad-Shenai/cxgb4-Synchronize-access-to-mailbox/20170105-193032
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
wget
https
Hi Hariprasad,
[auto build test ERROR on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Hariprasad-Shenai/cxgb4-Synchronize-access-to-mailbox/20170105-193032
config: i386-randconfig-x005-201701 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
The issue comes when there are multiple threads attempting to use
the mailbox facility at the same time.
When DCB operations and interface up/down is run in a loop for every
0.1 sec, we observed mailbox collisions. And out of the two commands
one would fail with the present code, since we don't que
