hsr0: VLAN not yet supported
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (0 ticks this GP) idle=1b64/1/0x4000000000000000 softirq=23770/23770 fqs=5246
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  5937250          0            0
rcu: 	cputime:    21257          0            0   ==> 52510(ms)
rcu: 	(detected by 0, t=10502 jiffies, g=25061, q=1064 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8453 Comm: syz.4.679 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__lock_acquire+0x157/0x7d40 kernel/locking/lockdep.c:5009
Code: 6c 24 70 44 89 b4 24 b8 00 00 00 48 89 5c 24 20 41 83 ff 01 77 30 44 89 f8 4c 8d 74 c7 08 4c 89 f0 48 c1 e8 03 42 80 3c 00 00 <74> 12 4c 89 f7 e8 af 28 77 00 49 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0000:ffffc9000e4bf300 EFLAGS: 00000046
RAX: 1ffffffff1a26415 RBX: ffff88802b86bc00 RCX: 1ffff92001c97e84
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d1320a0
RBP: ffffc9000e4bf548 R08: dffffc0000000000 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: 0000000000000001
R13: 0000000000000002 R14: ffffffff8d1320a8 R15: 0000000000000000
FS:  00007f1fe74c56c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000029c0 CR3: 000000005f9bc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754
 rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 rcu_read_lock include/linux/rcupdate.h:786 [inline]
 __perf_event_output kernel/events/core.c:7972 [inline]
 perf_event_output_forward+0xda/0x3e0 kernel/events/core.c:7995
 __perf_event_overflow+0x447/0x630 kernel/events/core.c:9720
 perf_swevent_overflow kernel/events/core.c:9803 [inline]
 perf_swevent_event+0x319/0x570 kernel/events/core.c:9854
 perf_tp_event+0x5f9/0x1520 kernel/events/core.c:10381
 perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10300
 perf_trace_preemptirq_template+0x269/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable+0xbb/0xe0 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0010:preempt_schedule_irq+0xba/0x150 kernel/sched/core.c:7010
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 51 e6 cd f6 e8 7c f3 fe f6 fb bf 01 00 00 00 <e8> f1 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0000:ffffc9000e4bfda0 EFLAGS: 00000286
RAX: 063318941cf37700 RBX: 0000000000000000 RCX: 063318941cf37700
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: 0000000000000001
RBP: ffffc9000e4bfe50 R08: ffffffff8e8b14ef R09: 1ffffffff1d1629d
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001c97fb4
 irqentry_exit+0x67/0x70 kernel/entry/common.c:438
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:exit_to_user_mode_loop+0x40/0x110 kernel/entry/common.c:164
Code: fb eb 1d e8 d2 96 12 09 65 48 8b 05 ba dc 8f 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 f5 ba 19 00 fb 41 f6 c6 08 <74> 05 e8 09 c2 1a 09 41 f7 c6 00 10 00 00 74 08 48 89 df e8 58 a0
RSP: 0000:ffffc9000e4bff10 EFLAGS: 00000202
RAX: 063318941cf37700 RBX: ffffc9000e4bff58 RCX: 063318941cf37700
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8e60
RBP: 0000000000000000 R08: ffffffff8e8b14ef R09: 1ffffffff1d1629d
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000008 R15: ffff88802b86bc00
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x30 kernel/entry/common.c:315
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0033:0x7f1fe659c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1fe74c5028 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f1fe6815fa0 RCX: 00007f1fe659c819
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f1fe6632c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1fe6816038 R14: 00007f1fe6815fa0 R15: 00007ffe9b9f8c18
 </TASK>