linux-kernel - [syzbot] [rcu?] WARNING in srcu_invoke

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Message-ID: <67b4c7af.050a0220.14d86d.000a.GAE@google.com>
Date: Tue, 18 Feb 2025 09:47:27 -0800
From: syzbot <syzbot+ae5b16688c0c675b1a1f@...kaller.appspotmail.com>
To: jiangshanlai@...il.com, josh@...htriplett.org, 
	linux-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com, 
	paulmck@...nel.org, rcu@...r.kernel.org, rostedt@...dmis.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [rcu?] WARNING in srcu_invoke_callbacks (2)

Hello,

syzbot found the following issue on:

HEAD commit:    a64dcfb451e2 Linux 6.14-rc2
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=12398f18580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c9c47badcd079906
dashboard link: https://syzkaller.appspot.com/bug?extid=ae5b16688c0c675b1a1f
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c0a862fcec77/disk-a64dcfb4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f03793fc001b/vmlinux-a64dcfb4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ae71c33eae14/Image-a64dcfb4.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ae5b16688c0c675b1a1f@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 6430 at kernel/rcu/srcutree.c:1798 srcu_invoke_callbacks+0x368/0x3d8
Modules linked in:
CPU: 0 UID: 0 PID: 6430 Comm: kworker/0:3 Not tainted 6.14.0-rc2-syzkaller-ga64dcfb451e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: rcu_gp srcu_invoke_callbacks
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : srcu_invoke_callbacks+0x368/0x3d8
lr : srcu_invoke_callbacks+0x1ec/0x3d8 kernel/rcu/srcutree.c:1791
sp : ffff8000a3497960
x29: ffff8000a3497a20 x28: ffff700014692f34 x27: ffff80009c6f6ce8
x26: 0000000000000000 x25: ffff80008b87d7e0 x24: dfff800000000000
x23: fffffdffbf6e3d08 x22: fffffdffbf6e3c80 x21: ffff8000a34979c0
x20: fffffdffbf6e3c40 x19: fffffdffbf6e3d60 x18: 1ffff0001472cf04
x17: ffff80008fbad000 x16: ffff8000804683c4 x15: 0000000000000001
x14: 1ffff000138ded9f x13: ffff8000a3498000 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000001 x7 : ffff80008044b5b8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000080 x0 : 0000000000000000
Call trace:
 srcu_invoke_callbacks+0x368/0x3d8 (P)
 process_one_work+0x810/0x1638 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3398
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 206698
hardirqs last  enabled at (206697): [<ffff800080310c38>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:394
hardirqs last disabled at (206698): [<ffff80008b7b3b54>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (206696): [<ffff80008050b40c>] local_bh_enable+0xc/0x2c include/linux/bottom_half.h:32
softirqs last disabled at (206692): [<ffff80008050b3e0>] local_bh_disable+0xc/0x2c include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---


---
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