linux-kernel - Re: RIP: + BUG: with 6.8.11 and BTRFS

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Date: Mon, 27 May 2024 19:02:56 +0930
From: Qu Wenruo <quwenruo.btrfs@....com>
To: Toralf Förster <toralf.foerster@....de>,
 Linux Kernel <linux-kernel@...r.kernel.org>,
 "linux-btrfs@...r.kernel.org" <linux-btrfs@...r.kernel.org>
Subject: Re: RIP: + BUG: with 6.8.11 and BTRFS



在 2024/5/27 00:16, Toralf Förster 写道:
> On 5/26/24 11:08, Toralf Förster wrote:
>>
>> I upgraded yesterday from kernel 6.8.10 to 6.8.11.
>>
>> The system does not recover from reboot in moment.
>
> It recovered eventually, I switched to 6.9.2, which runs fine so far.
> But these are new log messages:

That looks exactly the one Linus recently reported
(https://lore.kernel.org/linux-btrfs/CAHk-=wgt362nGfScVOOii8cgKn2LVVHeOvOA7OBwg1OwbuJQcw@mail.gmail.com/)

Unfortunately he is reproducing it with latest master, so I'm not sure
if v6.9 is any better.

Meanwhile if you can reproduce the problem reliably, I can craft several
debug patches for you to test, but I'm afraid it's not that reproducible...

Thanks,
Qu
>
> May 26 13:44:06 mr-fox kernel: WARNING: stack recursion on stack type 4
> May 26 13:44:06 mr-fox kernel: WARNING: can't access registers at
> syscall_return_via_sysret+0x64/0xc2
> May 26 13:44:06 mr-fox sSMTP[29464]: Creating SSL connection to host
> May 26 13:44:06 mr-fox sSMTP[29464]: SSL connection using
> TLS_AES_256_GCM_SHA384
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (2635 >
> 2500), lowering kernel.perf_event_max_sample_rate to 75750
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (3323 >
> 3293), lowering kernel.perf_event_max_sample_rate to 60000
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (4168 >
> 4153), lowering kernel.perf_event_max_sample_rate to 47750
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (5273 >
> 5210), lowering kernel.perf_event_max_sample_rate to 37750
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (6600 >
> 6591), lowering kernel.perf_event_max_sample_rate to 30250
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (8318 >
> 8250), lowering kernel.perf_event_max_sample_rate to 24000
> May 26 13:44:07 mr-fox kernel: perf: interrupt took too long (10415 >
> 10397), lowering kernel.perf_event_max_sample_rate to 19000
> May 26 13:44:09 mr-fox kernel: perf: interrupt took too long (13048 >
> 13018), lowering kernel.perf_event_max_sample_rate to 15250
>
> --
> Toralf
>
>