From: Kees Cook <kees@kernel.org>
To: linux-kernel@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>
Cc: Kees Cook <kees@kernel.org>, paulmck@kernel.org
Subject: Re: [PATCH v2] lkdtm/bugs: add test for hung smp_call_function_single()
Date: Mon, 17 Jun 2024 11:19:00 -0700 [thread overview]
Message-ID: <171864833734.3344563.14327987606116557799.b4-ty@kernel.org> (raw)
In-Reply-To: <20240515120828.375585-1-mark.rutland@arm.com>
On Wed, 15 May 2024 13:08:28 +0100, Mark Rutland wrote:
> The CONFIG_CSD_LOCK_WAIT_DEBUG option enables debugging of hung
> smp_call_function*() calls (e.g. when the target CPU gets stuck within
> the callback function). Testing this option requires triggering such
> hangs.
>
> This patch adds an lkdtm test with a hung smp_call_function_single()
> callback, which can be used to test CONFIG_CSD_LOCK_WAIT_DEBUG and NMI
> backtraces (as CONFIG_CSD_LOCK_WAIT_DEBUG will attempt an NMI backtrace
> of the hung target CPU).
>
> [...]
Applied to for-next/hardening, thanks!
[1/1] lkdtm/bugs: add test for hung smp_call_function_single()
https://git.kernel.org/kees/c/51005a59bcbe
Take care,
--
Kees Cook
prev parent reply other threads:[~2024-06-17 18:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-15 12:08 Mark Rutland
2024-06-17 10:47 ` Mark Rutland
2024-06-17 18:19 ` Kees Cook [this message]
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