linux-kernel - Re: [syzbot] [block?] [ext4?] [btrfs?] INFO: rcu detected stall in sys

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Message-ID: <20250827213813.5905-1-hdanton@sina.com>
Date: Thu, 28 Aug 2025 05:38:12 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+4507914ec56d21bb39ed@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] [ext4?] [btrfs?] INFO: rcu detected stall in sys_mount (8)

> Date: Wed, 27 Aug 2025 06:07:31 -0700	[thread overview]
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    8f5ae30d69d7 Linux 6.17-rc1
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=16a85ef0580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb
> dashboard link: https://syzkaller.appspot.com/bug?extid=4507914ec56d21bb39ed
> compiler:       Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
> userspace arch: arm64
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1455a462580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12229462580000

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git  fixes