rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P8748 0-.... } 2658 jiffies s: 21825 root: 0x1/T
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8753 Comm: syz.4.1186 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:-1 [inline]
RIP: 0010:unwind_next_frame+0x1887/0x20b0 arch/x86/kernel/unwind_orc.c:629
Code: 89 d2 0c 00 75 3e c6 05 90 89 d2 0c 01 48 c7 c7 c0 79 89 8a e9 9d fa ff ff bf 01 00 00 00 e8 90 3a 1f 00 65 8b 0d 11 f2 c9 7e <b0> 01 85 c9 75 75 e8 5e 03 c8 ff eb 6e 80 3d 5e 89 d2 0c 00 0f 84
RSP: 0018:ffffc90000006d08 EFLAGS: 00000013
RAX: 0000000000000103 RBX: ffffc90000006e40 RCX: 0000000000000102
RDX: ffffc90003427f00 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffffff8f3a4f62 R08: 0000000000000004 R09: ffffc90000006e90
R10: fffff52000000dd4 R11: 1ffff92000000dd2 R12: ffffc90003420000
R13: dffffc0000000000 R14: ffffc90000006e50 R15: 00007f14c7176038
FS:  00007f14c71766c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000002 CR3: 000000004819b000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_callchain_kernel+0x461/0x5c0 arch/x86/events/core.c:2805
 get_perf_callchain+0x376/0x480 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7512 [inline]
 perf_prepare_sample+0x399/0x2040 kernel/events/core.c:7545
 __perf_event_output kernel/events/core.c:7730 [inline]
 perf_event_output_forward+0x163/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 0d 93 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007740 EFLAGS: 00000206
RAX: 1eaadce2f87d3d00 RBX: 1ffff92000000ef0 RCX: 1eaadce2f87d3d00
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef3a0
RBP: ffffc90000007840 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 netif_receive_skb_list_internal+0x9e1/0xc50 net/core/dev.c:5816
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x37d/0x830 net/core/dev.c:6156
 virtqueue_napi_complete drivers/net/virtio_net.c:403 [inline]
 virtnet_poll+0x991/0x1150 drivers/net/virtio_net.c:1717
 __napi_poll+0xc0/0x460 net/core/dev.c:6590
 napi_poll net/core/dev.c:6657 [inline]
 net_rx_action+0x5b1/0xad0 net/core/dev.c:6771
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5123
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 10 5e c9 08 e8 1b b4 2e 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900034278d8 EFLAGS: 00000286
RAX: 1eaadce2f87d3d00 RBX: 0000000000000000 RCX: 1eaadce2f87d3d00
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef3a0
RBP: ffffc90003427930 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: ffff88801a29bb80
R13: dffffc0000000000 R14: ffff88813fec0000 R15: ffff8880b8e3b590
 context_switch kernel/sched/core.c:5247 [inline]
 __schedule+0x10f4/0x40b0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xce/0xaf0 kernel/locking/mutex.c:747
Code: 00 e8 36 9a 38 f7 2e 2e 2e 31 c0 48 c7 c0 40 91 be 96 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 6b 09 00 00 83 3d 42 d5 9d 0c 00 <75> 21 48 8d 7b 60 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8 99
RSP: 0018:ffffc90003427c40 EFLAGS: 00000246
RAX: 0000000000000004 RBX: ffff88801a29cfb8 RCX: ffffffff96be9103
RDX: ffff88801a29bb80 RSI: ffffffff8a8c1700 RDI: ffffffff8adef3a0
RBP: ffffc90003427d90 R08: ffffffff81a404e0 R09: ffffed1003453776
R10: ffffed1003453776 R11: 1ffff11003453775 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888074a0f200 R15: 0000000000000000
 __do_sys_perf_event_open kernel/events/core.c:12796 [inline]
 __se_sys_perf_event_open+0x1af0/0x1e60 kernel/events/core.c:12378
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f14c638efc9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f14c7176038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f14c65e6180 RCX: 00007f14c638efc9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f14c6411f91 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f14c65e6218 R14: 00007f14c65e6180 R15: 00007ffdd5d9b5e8
 </TASK>