linux-kernel - Re: [syzbot] [bpf?] WARNING: locking bug in trie_delete

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Message-ID: <672d2a52.050a0220.15a23d.01a1.GAE@google.com>
Date: Thu, 07 Nov 2024 13:00:02 -0800
From: syzbot <syzbot+b506de56cbbb63148c33@...kaller.appspotmail.com>
To: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org, 
	daniel@...earbox.net, eddyz87@...il.com, frederic@...nel.org, 
	haoluo@...gle.com, houtao@...weicloud.com, john.fastabend@...il.com, 
	jolsa@...nel.org, kpsingh@...nel.org, linux-kernel@...r.kernel.org, 
	martin.lau@...ux.dev, peterz@...radead.org, sdf@...ichev.me, song@...nel.org, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, yonghong.song@...ux.dev
Subject: Re: [syzbot] [bpf?] WARNING: locking bug in trie_delete_elem

syzbot has bisected this issue to:

commit 4febce44cfebcb490b196d5d10ae9f403ca4c956
Author: Thomas Gleixner <tglx@...utronix.de>
Date:   Tue Oct 1 08:42:03 2024 +0000

    posix-timers: Cure si_sys_private race

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=129f2d87980000
start commit:   f9f24ca362a4 Add linux-next specific files for 20241031
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=169f2d87980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=328572ed4d152be9
dashboard link: https://syzkaller.appspot.com/bug?extid=b506de56cbbb63148c33
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1387655f980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11ac5540580000

Reported-by: syzbot+b506de56cbbb63148c33@...kaller.appspotmail.com
Fixes: 4febce44cfeb ("posix-timers: Cure si_sys_private race")

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