netdev - [syzbot] [net?] WARNING in rcu_note_context

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Message-ID: <67362fb0.050a0220.2a2fcc.0069.GAE@google.com>
Date: Thu, 14 Nov 2024 09:13:20 -0800
From: syzbot <syzbot+094799fb39e31554d5ee@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, horms@...nel.org, 
	jhs@...atatu.com, jiri@...nulli.us, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzkaller-bugs@...glegroups.com, xiyou.wangcong@...il.com
Subject: [syzbot] [net?] WARNING in rcu_note_context_switch (3)

Hello,

syzbot found the following issue on:

HEAD commit:    de2f378f2b77 Merge tag 'nfsd-6.12-4' of git://git.kernel.o..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11d654e8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=34db67f35f954904
dashboard link: https://syzkaller.appspot.com/bug?extid=094799fb39e31554d5ee
compiler:       aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, 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 (non-bootable): https://storage.googleapis.com/syzbot-assets/384ffdcca292/non_bootable_disk-de2f378f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7f87c581ec66/vmlinux-de2f378f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/93ad0017ba33/Image-de2f378f.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+094799fb39e31554d5ee@...kaller.appspotmail.com

------------[ cut here ]------------
Voluntary context switch within RCU read-side critical section!
WARNING: CPU: 1 PID: 62 at kernel/rcu/tree_plugin.h:331 rcu_note_context_switch+0x354/0x49c kernel/rcu/tree_plugin.h:331
Modules linked in:
CPU: 1 UID: 0 PID: 62 Comm: kworker/u8:3 Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0
Hardware name: linux,dummy-virt (DT)
Workqueue: bond0 bond_mii_monitor
pstate: 614000c9 (nZCv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : rcu_note_context_switch+0x354/0x49c kernel/rcu/tree_plugin.h:331
lr : rcu_note_context_switch+0x354/0x49c kernel/rcu/tree_plugin.h:331
sp : ffff800082f7ba00
x29: ffff800082f7ba00 x28: 0000000000000003 x27: f3f0000004214900
x26: 0000000000000000 x25: fff000007f8ee800 x24: 0000000000000000
x23: 0000000000000000 x22: f3f0000004214900 x21: 0000000000000000
x20: ffff8000827006c0 x19: fff000007f8ef6c0 x18: fffffffffffdbe58
x17: fff07ffffd1ef000 x16: ffff800080008000 x15: 0000000000000048
x14: fffffffffffdbea0 x13: ffff80008274e5d0 x12: 00000000000012cc
x11: 0000000000000644 x10: ffff800082807c30 x9 : ffff80008274e5d0
x8 : 00000000ffffdfff x7 : ffff8000827fe5d0 x6 : 0000000000000644
x5 : fff000007f8e43c8 x4 : 40000000ffffe644 x3 : fff07ffffd1ef000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : f3f0000004214900
Call trace:
 rcu_note_context_switch+0x354/0x49c kernel/rcu/tree_plugin.h:331
 __schedule+0xb8/0x8fc kernel/sched/core.c:6570
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x34/0x104 kernel/sched/core.c:6782
 synchronize_rcu_expedited+0x17c/0x1f0 kernel/rcu/tree_exp.h:991
 synchronize_net+0x18/0x34 net/core/dev.c:11286
 dev_deactivate_many+0x120/0x278 net/sched/sch_generic.c:1377
 dev_deactivate+0x60/0xac net/sched/sch_generic.c:1403
 linkwatch_do_dev+0x78/0xec net/core/link_watch.c:175
 linkwatch_sync_dev+0x8c/0xc8 net/core/link_watch.c:263
 ethtool_op_get_link+0x18/0x34 net/ethtool/ioctl.c:62
 bond_check_dev_link+0x68/0x154 drivers/net/bonding/bond_main.c:873
 bond_miimon_inspect drivers/net/bonding/bond_main.c:2717 [inline]
 bond_mii_monitor+0x110/0x91c drivers/net/bonding/bond_main.c:2939
 process_one_work+0x15c/0x29c kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x24c/0x354 kernel/workqueue.c:3391
 kthread+0x114/0x118 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
---[ end trace 0000000000000000 ]---


---
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