netdev - Re: [PATCH net] igb: Avoid starting unnecessary workqueues

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Date: Wed, 23 Aug 2023 00:30:24 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Tony Nguyen <anthony.l.nguyen@...el.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, netdev@...r.kernel.org, alessio.bogani@...ttra.eu,
 richardcochran@...il.com, leon@...nel.org, rrameshbabu@...dia.com,
 arpanax.arland@...el.com
Subject: Re: [PATCH net] igb: Avoid starting unnecessary workqueues

Hello:

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

On Mon, 21 Aug 2023 10:19:27 -0700 you wrote:
> From: Alessio Igor Bogani <alessio.bogani@...ttra.eu>
> 
> If ptp_clock_register() fails or CONFIG_PTP isn't enabled, avoid starting
> PTP related workqueues.
> 
> In this way we can fix this:
>  BUG: unable to handle page fault for address: ffffc9000440b6f8
>  #PF: supervisor read access in kernel mode
>  #PF: error_code(0x0000) - not-present page
>  PGD 100000067 P4D 100000067 PUD 1001e0067 PMD 107dc5067 PTE 0
>  Oops: 0000 [#1] PREEMPT SMP
>  [...]
>  Workqueue: events igb_ptp_overflow_check
>  RIP: 0010:igb_rd32+0x1f/0x60
>  [...]
>  Call Trace:
>   igb_ptp_read_82580+0x20/0x50
>   timecounter_read+0x15/0x60
>   igb_ptp_overflow_check+0x1a/0x50
>   process_one_work+0x1cb/0x3c0
>   worker_thread+0x53/0x3f0
>   ? rescuer_thread+0x370/0x370
>   kthread+0x142/0x160
>   ? kthread_associate_blkcg+0xc0/0xc0
>   ret_from_fork+0x1f/0x30
> 
> [...]

Here is the summary with links:
  - [net] igb: Avoid starting unnecessary workqueues
    https://git.kernel.org/netdev/net/c/b888c510f7b3

You are awesome, thank you!
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