linux-kernel - Re: [syzbot] [bpf?] BUG: MAX_STACK_TRACE

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Message-ID: <66f900ce.050a0220.aab67.000f.GAE@google.com>
Date: Sun, 29 Sep 2024 00:25:02 -0700
From: syzbot <syzbot+c6c4861455fdd207f160@...kaller.appspotmail.com>
To: andrii@...nel.org, asml.silence@...il.com, ast@...nel.org, axboe@...nel.dk, 
	bpf@...r.kernel.org, daniel@...earbox.net, eddyz87@...il.com, 
	haoluo@...gle.com, john.fastabend@...il.com, jolsa@...nel.org, 
	kpsingh@...nel.org, linux-kernel@...r.kernel.org, martin.lau@...ux.dev, 
	mingo@...nel.org, netdev@...r.kernel.org, peterz@...radead.org, 
	riel@...hat.com, sdf@...ichev.me, sdf@...gle.com, song@...nel.org, 
	syzkaller-bugs@...glegroups.com, wander@...hat.com, yhs@...com, 
	yonghong.song@...ux.dev
Subject: Re: [syzbot] [bpf?] BUG: MAX_STACK_TRACE_ENTRIES too low! (4)

syzbot has bisected this issue to:

commit 893cdaaa3977be6afb3a7f756fbfd7be83f68d8c
Author: Wander Lairson Costa <wander@...hat.com>
Date:   Wed Jun 14 12:23:22 2023 +0000

    sched: avoid false lockdep splat in put_task_struct()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14a00127980000
start commit:   abf2050f51fd Merge tag 'media/v6.12-1' of git://git.kernel..
git tree:       bpf
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16a00127980000
console output: https://syzkaller.appspot.com/x/log.txt?x=12a00127980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bc30a30374b0753
dashboard link: https://syzkaller.appspot.com/bug?extid=c6c4861455fdd207f160
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14ee7107980000

Reported-by: syzbot+c6c4861455fdd207f160@...kaller.appspotmail.com
Fixes: 893cdaaa3977 ("sched: avoid false lockdep splat in put_task_struct()")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection