linux-kernel - Re: [net v3] net: wwan: t7xx: Fix FSM command timeout issue

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Message-Id: 
 <173561103149.1487469.7896899204540542630.git-patchwork-notify@kernel.org>
Date: Tue, 31 Dec 2024 02:10:31 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jinjian Song <jinjian.song@...ocom.com>
Cc: chandrashekar.devegowda@...el.com, chiranjeevi.rapolu@...ux.intel.com,
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Subject: Re: [net v3] net: wwan: t7xx: Fix FSM command timeout issue

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 24 Dec 2024 12:15:52 +0800 you wrote:
> When driver processes the internal state change command, it use an
> asynchronous thread to process the command operation. If the main
> thread detects that the task has timed out, the asynchronous thread
> will panic when executing the completion notification because the
> main thread completion object has been released.
> 
> BUG: unable to handle page fault for address: fffffffffffffff8
> PGD 1f283a067 P4D 1f283a067 PUD 1f283c067 PMD 0
> Oops: 0000 [#1] PREEMPT SMP NOPTI
> RIP: 0010:complete_all+0x3e/0xa0
> [...]
> Call Trace:
>  <TASK>
>  ? __die_body+0x68/0xb0
>  ? page_fault_oops+0x379/0x3e0
>  ? exc_page_fault+0x69/0xa0
>  ? asm_exc_page_fault+0x22/0x30
>  ? complete_all+0x3e/0xa0
>  fsm_main_thread+0xa3/0x9c0 [mtk_t7xx (HASH:1400 5)]
>  ? __pfx_autoremove_wake_function+0x10/0x10
>  kthread+0xd8/0x110
>  ? __pfx_fsm_main_thread+0x10/0x10 [mtk_t7xx (HASH:1400 5)]
>  ? __pfx_kthread+0x10/0x10
>  ret_from_fork+0x38/0x50
>  ? __pfx_kthread+0x10/0x10
>  ret_from_fork_asm+0x1b/0x30
>  </TASK>
> [...]
> CR2: fffffffffffffff8
> 
> [...]

Here is the summary with links:
  - [net,v3] net: wwan: t7xx: Fix FSM command timeout issue
    https://git.kernel.org/netdev/net/c/4f619d518db9

You are awesome, thank you!
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