From: Andrew Morton <akpm@linux-foundation.org>
To: Breno Leitao <leitao@debian.org>
Cc: Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH] mm/kfence: add reboot notifier to disable KFENCE on shutdown
Date: Thu, 27 Nov 2025 11:19:40 -0800 [thread overview]
Message-ID: <20251127111940.8549bd7aa82cfae5e9be1b0e@linux-foundation.org> (raw)
In-Reply-To: <nqzny5rxn27exzhfzaaxg4tfbshhmr5aum76ygficd46b54c4r@tqrelxeucsti>
On Thu, 27 Nov 2025 03:12:10 -0800 Breno Leitao <leitao@debian.org> wrote:
> > > This fixes a late kexec CSD lockup[1] when kfence is trying to IPI a CPU
> > > that is busy in a IRQ-disabled context printing characters to the
> > > console.
> > >
> > > Link: https://lore.kernel.org/all/sqwajvt7utnt463tzxgwu2yctyn5m6bjwrslsnupfexeml6hkd@v6sqmpbu3vvu/ [1]
> >
> > 6.13 kernels and earlier, so I assume we'll want a cc:stable on this.
> > And I assume there's really no identifiable Fixes: target.
>
> This infrastructure showed up when kfence was created, so, a possible
> Fixes: target would point to commit 0ce20dd84089 ("mm: add Kernel
> Electric-Fence infrastructure")
Great, thanks, I added that.
prev parent reply other threads:[~2025-11-27 19:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-26 17:46 Breno Leitao
2025-11-26 17:49 ` Marco Elver
2025-11-26 18:14 ` Andrew Morton
2025-11-27 11:12 ` Breno Leitao
2025-11-27 19:19 ` Andrew Morton [this message]
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