From: Christian Heusel <christian@heusel.eu>
To: "Ned T. Crigler" <crigler@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
regressions@lists.linux.dev, Jeff LaBundy <jeff@labundy.com>,
Benjamin Tissoires <bentiss@kernel.org>
Subject: Re: [REGRESSION] disabling and re-enabling magic sysrq fails after kernel 6.11
Date: Sun, 27 Oct 2024 15:06:09 +0100 [thread overview]
Message-ID: <69b6119c-3c3a-406f-9375-3e55fba9b732@heusel.eu> (raw)
In-Reply-To: <Zx2iQp6csn42PJA7@xavtug>
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On 24/10/26 07:15PM, Ned T. Crigler wrote:
> Hi,
Hey Ned,
> It looks like starting with kernel 6.11, disabling and re-enabling
> magic
> sysrq fails with these errors in dmesg:
>
> kernel: input: input_handler_check_methods: only one event processing
> method can be defined (sysrq)
> kernel: sysrq: Failed to register input handler, error -22
>
> after doing:
>
> # echo 0 > /proc/sys/kernel/sysrq
> # echo 438 > /proc/sys/kernel/sysrq
> # echo 0 > /proc/sys/kernel/sysrq
> # echo 438 > /proc/sys/kernel/sysrq
> # echo 0 > /proc/sys/kernel/sysrq
> # echo 438 > /proc/sys/kernel/sysrq
I have found that this issue is also present in the latest mainline
release and bisected it to the following commit:
d469647bafd9 ("Input: simplify event handling logic")
The additional authors / maintainers have been added to the recipients
lists.
I hope I didn't overlook any pending fixes.
> --
> Ned T. Crigler
Cheers,
Chris
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next prev parent reply other threads:[~2024-10-27 14:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-27 2:15 [REGRESSION] disabling and re-enabling magic sysrq fails after kernel 6.11 Ned T. Crigler
2024-10-27 14:06 ` Christian Heusel [this message]
2024-10-27 15:37 ` Peter Seiderer
2024-10-27 17:02 ` Ned T. Crigler
2024-10-28 5:30 ` Dmitry Torokhov
2024-10-28 8:38 ` Peter Seiderer
2024-10-29 0:58 ` Ned T. Crigler
2024-11-04 12:06 ` Christian Heusel
2024-11-05 5:43 ` Dmitry Torokhov
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