rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (186 ticks this GP) idle=a59/1/0x4000000000000002 softirq=51039/51039 fqs=2119 
	(detected by 1, t=10502 jiffies, g=70817, q=1193)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20889 Comm: syz.8.4112 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:unwind_next_frame+0xa7/0x1cf0 arch/x86/kernel/unwind_orc.c:436
Code: 28 4c 89 6c 24 58 4c 89 64 24 38 4c 89 7c 24 30 bf 01 00 00 00 e8 29 39 1d 00 4c 8d 7b 50 4c 89 f8 48 c1 e8 03 48 89 44 24 18 <42> 80 3c 30 00 74 08 4c 89 ff e8 6a 29 89 00 4d 8b 37 4d 85 f6 74
RSP: 0018:ffffc90000006fc8 EFLAGS: 00000806
RAX: 1ffff92000000e22 RBX: ffffc900000070c0 RCX: ffffffff962f7f03
RDX: 000000000000000a RSI: 000000000000007f RDI: 0000000000000001
RBP: 1ffff92000000e1f R08: ffffc90000007df0 R09: ffffc90000007110
R10: dffffc0000000000 R11: fffff52000000e24 R12: ffffffff816851e3
R13: ffffc90000007e00 R14: dffffc0000000000 R15: ffffc90000007110
FS:  00007f7ec38536c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000007868c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_callchain_kernel+0x470/0x760 arch/x86/events/core.c:2783
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7616 [inline]
 perf_prepare_sample+0x352/0x1cb0 kernel/events/core.c:7643
 __perf_event_output kernel/events/core.c:7812 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7832
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10057
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10031
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x4e/0x4a0 kernel/rcu/tree_plugin.h:625
Code: 24 80 00 00 00 49 bd 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44 24 28 69 a0 c0 8b 48 c7 44 24 30 10 64 65 81 <48> 8d 5c 24 20 48 c1 eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04
RSP: 0018:ffffc900000079c0 EFLAGS: 00000286
RAX: 1619820328ca6900 RBX: ffff88801e853fbc RCX: ffff88801e853b80
RDX: 0000000000000100 RSI: ffffffff8a7a48a0 RDI: ffff88801e853b80
RBP: ffffc90000007aa0 R08: ffffffff901f11bf R09: 1ffffffff203e237
R10: dffffc0000000000 R11: fffffbfff203e238 R12: 1ffff11003d0a7f7
R13: dffffc0000000000 R14: ffff88801e853fc0 R15: dffffc0000000000
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 hsr_announce+0x29a/0x310 net/hsr/hsr_device.c:409
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_lock_switch+0x12f/0x290 kernel/sched/core.c:4804
Code: 83 c7 18 be ff ff ff ff e8 8e da 6c 08 85 c0 74 46 4d 85 ff 75 62 0f 1f 44 00 00 48 89 df e8 78 4a 76 08 e8 93 e3 2a 00 fb 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 2f 0e fe ff 43 80 3c 2c
RSP: 0018:ffffc900032ef7b8 EFLAGS: 00000282
RAX: 1619820328ca6900 RBX: ffff88801e851dc0 RCX: 1619820328ca6900
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a48c0
RBP: 1ffff11017207613 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 1ffff110172075c1
R13: dffffc0000000000 R14: ffff8880b903ae08 R15: 0000000000000000
 finish_task_switch+0x12f/0x650 kernel/sched/core.c:4921
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11cb/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 freezable_schedule include/linux/freezer.h:172 [inline]
 futex_wait_queue_me+0x22b/0x440 kernel/futex/core.c:2866
 futex_wait+0x256/0x680 kernel/futex/core.c:2967
 do_futex+0xdc2/0x12b0 kernel/futex/core.c:4018
 __do_sys_futex kernel/futex/core.c:4095 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4076
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7ec55fb159
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:00007f7ec38530e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f7ec5882fa8 RCX: 00007f7ec55fb159
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7ec5882fa8
RBP: 00007f7ec5882fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7ec5883038 R14: 00007ffd01d0b930 R15: 00007ffd01d0ba18
 </TASK>