syzbot


BUG: workqueue leaked atomic, lock or RCU: irq/NUM-virtio1-[NUM]

Status: closed as invalid on 2026/04/23 02:33
Subsystems: kernel
[Documentation on labels]
First crash: 68d, last: 68d

Sample crash report:
BUG: workqueue leaked atomic, lock or RCU: irq/31-virtio1-[1184]
     preempt=0x00000000 lock=3->0 RCU=2->2 workfn=tcp_tsq_workfn
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 1184 Comm: irq/31-virtio1- Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 process_one_work kernel/workqueue.c:3309 [inline]
 process_scheduled_works+0x1283/0x18c0 kernel/workqueue.c:3371
 bh_worker+0x47e/0x880 kernel/workqueue.c:3674
 tasklet_action+0xc/0x70 kernel/softirq.c:952
 handle_softirqs+0x1de/0x6f0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 __local_bh_enable_ip+0x170/0x2b0 kernel/softirq.c:302
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 irq_forced_thread_fn+0xe9/0x120 kernel/irq/manage.c:1168
 irq_thread+0x4c9/0x740 kernel/irq/manage.c:1271
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/13 20:19 upstream 26ff969926a0 9530ccf9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs BUG: workqueue leaked atomic, lock or RCU: irq/NUM-virtio1-[NUM]
* Struck through repros no longer work on HEAD.