From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Waiman Long <longman@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Clark Williams <clrkwllms@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev
Subject: Re: [PATCH] arm64/entry: Don't disable preemption in debug_exception_enter() with RT kernel
Date: Wed, 20 May 2026 08:19:20 +0200 [thread overview]
Message-ID: <20260520061920.XCqBHe0x@linutronix.de> (raw)
In-Reply-To: <20260519222524.886454-1-longman@redhat.com>
On 2026-05-19 18:25:24 [-0400], Waiman Long wrote:
> Commit d8bb6718c4db ("arm64: Make debug exception handlers visible from
> RCU") introduces debug_exception_enter() and debug_exception_exit()
> where preemption is explicitly disabled. With a PREEMPT_RT debug kernel,
> the following bug report can happen.
…
What kernel is this? I have backport (which is being tested) for v6.6
and v6.12, the patches are from v6.17-rc1.
Sebastian
next prev parent reply other threads:[~2026-05-20 6:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 22:25 [PATCH] arm64/entry: Don't disable preemption in debug_exception_enter() with RT kernel Waiman Long
2026-05-20 0:23 ` Luis Claudio R. Goncalves
2026-05-20 6:19 ` Sebastian Andrzej Siewior [this message]
2026-05-20 11:23 ` Luis Claudio R. Goncalves
2026-05-20 21:01 ` Waiman Long
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