netdev - [syzbot] [kernel?] BUG: workqueue leaked atomic, lock or RCU: kworker/NUM:NUM[NUM]

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Message-ID: <6716128e.050a0220.10f4f4.0040.GAE@google.com>
Date: Mon, 21 Oct 2024 01:36:30 -0700
From: syzbot <syzbot+21814e89fd126bbfb79c@...kaller.appspotmail.com>
To: bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, 
	linux-kernel@...r.kernel.org, mingo@...hat.com, netdev@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: [syzbot] [kernel?] BUG: workqueue leaked atomic, lock or RCU: kworker/NUM:NUM[NUM]

Hello,

syzbot found the following issue on:

HEAD commit:    09cf85ef183a Merge branch 'ipv4-namespacify-ipv4-address-h..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14bc2b27980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=97682d9a9859be7a
dashboard link: https://syzkaller.appspot.com/bug?extid=21814e89fd126bbfb79c
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f07fbcff269f/disk-09cf85ef.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/27b386159ee2/vmlinux-09cf85ef.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0d9909f42c33/bzImage-09cf85ef.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+21814e89fd126bbfb79c@...kaller.appspotmail.com

BUG: workqueue leaked atomic, lock or RCU: kworker/0:4[5280]
     preempt=0x00000000 lock=0->0 RCU=0->0 workfn=nsim_dev_trap_report_work
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 5280 Comm: kworker/0:4 Not tainted 6.12.0-rc1-syzkaller-00360-g09cf85ef183a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work

Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 process_one_work kernel/workqueue.c:3250 [inline]
 process_scheduled_works+0x1158/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>


---
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