linux-kernel - Re: [PATCH 04/19] perf: Simplify perf_event

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Message-ID: <Z8rZeAjWSpjsrPCn@gmail.com>
Date: Fri, 7 Mar 2025 12:33:12 +0100
From: Ingo Molnar <mingo@...nel.org>
To: "Lai, Yi" <yi1.lai@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>, lucas.demarchi@...el.com,
	linux-kernel@...r.kernel.org, willy@...radead.org, acme@...nel.org,
	namhyung@...nel.org, mark.rutland@....com,
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
	irogers@...gle.com, adrian.hunter@...el.com,
	kan.liang@...ux.intel.com, yi1.lai@...el.com
Subject: Re: [PATCH 04/19] perf: Simplify perf_event_alloc() error path


* Lai, Yi <yi1.lai@...ux.intel.com> wrote:

> On Thu, Mar 06, 2025 at 10:24:35AM +0100, Ingo Molnar wrote:
> > 
> > * Lai, Yi <yi1.lai@...ux.intel.com> wrote:
> > 
> > > Hi Peter Zijlstra ,
> > > 
> > > Greetings!
> > > 
> > > I used Syzkaller and found that in linux-next (tag: next-20250303), there are two issues and the first bad commit for both issues is
> > > 
> > > "
> > > 02be310c2d24 perf/core: Simplify the perf_event_alloc() error path
> > > "
> > 
> > We've had a number of fixes in this area, could you please check 
> > whether you can reproduce this crash with the latest perf tree:
> > 
> >   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
> > 
> Tested the tip tree perf/core branch - HEAD 7a310c644cf571fbdb1d447a1dc39cf048634589:
> 
> Above two issues cannot be reproduced.

Thank you!

	Ingo