netdev - Re: [syzbot] [perf?] WARNING in perf_event

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Message-ID: <Zdh2fjuWi0sQIhpV@FVFF77S0Q05N>
Date: Fri, 23 Feb 2024 10:42:16 +0000
From: Mark Rutland <mark.rutland@....com>
To: syzbot <syzbot+07144c543a5c002c7305@...kaller.appspotmail.com>
Cc: acme@...nel.org, adrian.hunter@...el.com,
	alexander.shishkin@...ux.intel.com, eadavis@...com,
	irogers@...gle.com, jolsa@...nel.org, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org, mingo@...hat.com,
	namhyung@...nel.org, netdev@...r.kernel.org, olsajiri@...il.com,
	peterz@...radead.org, syzkaller-bugs@...glegroups.com,
	xrivendell7@...il.com
Subject: Re: [syzbot] [perf?] WARNING in perf_event_open

On Thu, Feb 22, 2024 at 07:58:02PM -0800, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit 7e2c1e4b34f07d9aa8937fab88359d4a0fce468e
> Author: Mark Rutland <mark.rutland@....com>
> Date:   Fri Dec 15 11:24:50 2023 +0000
> 
>     perf: Fix perf_event_validate_size() lockdep splat
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=157c509c180000
> start commit:   5abde6246522 bpf: Avoid unnecessary use of comma operator ..
> git tree:       bpf-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8f565e10f0b1e1fc
> dashboard link: https://syzkaller.appspot.com/bug?extid=07144c543a5c002c7305
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16ba8929e80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17be7265e80000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: perf: Fix perf_event_validate_size() lockdep splat

I believe syzbot is correct; this is fixed by commit:

  7e2c1e4b34f07d9a ("perf: Fix perf_event_validate_size() lockdep splat")

... so:

#syz fix: perf: Fix perf_event_validate_size() lockdep splat

Mark.