------------[ cut here ]------------
WARNING: CPU: 1 PID: 5344 at kernel/rcu/tree_stall.h:937 rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:929
Modules linked in:
CPU: 1 PID: 5344 Comm: kworker/1:14 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:937
Code: ff ff ff 48 c7 c7 20 3c 32 96 be 04 00 00 00 e8 ca ef 58 00 48 89 df b8 01 00 00 00 87 05 ec c7 cc 14 85 c0 0f 85 19 ff ff ff <0f> 0b 48 81 ff c0 37 32 8c 74 47 48 c7 c0 84 3a 8a 8d 48 c1 e8 03
RSP: 0018:ffffc90000dd0c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff8c3237c0 RCX: ffffffff81657426
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8c3237c0
RBP: ffffc90000dd0ed0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff2c64784 R12: 0000000000002904
R13: ffff8880b913b258 R14: 0000000000000a02 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3a659b CR3: 0000000020569000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
rcu_core+0x62b/0x1670 kernel/rcu/tree.c:2758
handle_softirqs+0x339/0x830 kernel/softirq.c:576
do_softirq+0x142/0x210 kernel/softirq.c:477
</IRQ>
<TASK>
__local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:401
spin_unlock_bh include/linux/spinlock.h:409 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:736 [inline]
nsim_dev_trap_report_work+0x7cf/0xb50 drivers/net/netdevsim/dev.c:762
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>