linux-kernel - Re: [syzbot] [perf?] WARNING: suspicious RCU usage in get_callchain

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Message-Id: <20260128091538.1892516-1-wangqing7171@gmail.com>
Date: Wed, 28 Jan 2026 17:15:38 +0800
From: Qing Wang <wangqing7171@...il.com>
To: peterz@...radead.org
Cc: acme@...nel.org,
	adrian.hunter@...el.com,
	alexander.shishkin@...ux.intel.com,
	irogers@...gle.com,
	jolsa@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	mark.rutland@....com,
	mingo@...hat.com,
	namhyung@...nel.org,
	syzbot+72a43cdb78469f7fbad1@...kaller.appspotmail.com,
	syzkaller-bugs@...glegroups.com,
	wangqing7171@...il.com
Subject: Re: [syzbot] [perf?] WARNING: suspicious RCU usage in get_callchain_entry

On Wed, 28 Jan 2026 at 16:52, Peter Zijlstra <peterz@...radead.org> wrote:
> This is just papering over more bugs. There was a series out there
> somewhere trying to fix up this code, let me see if I can find it in
> this shitshow called an inbox :/

Thank you for reminding me. I found that fix you said.

https://lore.kernel.org/bpf/fb745675-e25c-4dcc-be4b-4a4411056755@linux.dev/T/#mf901967ebe77506f1bd6e3d876c2a85824d9519d

Let's ignore this patch :)

--
Best regards,
Qing