rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2691 jiffies s: 122261 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 23421 Comm: syz.4.5019 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:get_current kernel/rcu/tree_plugin.h:401 [inline]
RIP: 0010:rcu_preempt_read_enter kernel/rcu/tree_plugin.h:379 [inline]
RIP: 0010:__rcu_read_lock+0x0/0x50 kernel/rcu/tree_plugin.h:402
Code: f7 e8 f4 5d 66 00 e9 8d fb ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 18 fb ff ff 4c 89 e7 e8 29 5e 66 00 e9 0b fb ff ff 0f 1f 40 00 <53> 65 48 8b 1d 67 84 95 7e 48 81 c3 3c 04 00 00 48 89 d8 48 c1 e8
RSP: 0018:ffffc90000007398 EFLAGS: 00000046
RAX: ffffffff81a4bd65 RBX: 1ffff92000000e78 RCX: ffff888055238000
RDX: 0000000000000100 RSI: ffffc90000007680 RDI: ffff88803b740000
RBP: ffffc900000074b0 R08: ffff88803b74047b R09: 1ffff110076e808f
R10: dffffc0000000000 R11: ffffed10076e8090 R12: ffffc90000007680
R13: ffffc90000007440 R14: dffffc0000000000 R15: ffff88803b740000
FS:  00007f00b7b4a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91da1faa10 CR3: 0000000028df8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock include/linux/rcupdate.h:789 [inline]
 __perf_event_output kernel/events/core.c:7728 [inline]
 perf_event_output_forward+0xb7/0x2f0 kernel/events/core.c:7750
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9496
 perf_swevent_overflow kernel/events/core.c:9579 [inline]
 perf_swevent_event+0x315/0x570 kernel/events/core.c:9630
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10064
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032
 perf_trace_preemptirq_template+0x268/0x320 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+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 e2 82 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206
RAX: 2f748509b90b7b00 RBX: 1ffff92000000f60 RCX: 2f748509b90b7b00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adee1a0
RBP: ffffc90000007bc0 R08: ffffffff90af22df R09: 1ffffffff215e45b
R10: dffffc0000000000 R11: fffffbfff215e45c R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3bb00 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_rx_napi+0x23d/0x3c0 net/mac80211/rx.c:5339
 ieee80211_rx include/net/mac80211.h:4849 [inline]
 ieee80211_handle_queued_frames+0x104/0x1a0 net/mac80211/main.c:317
 tasklet_action_common+0x2d0/0x460 kernel/softirq.c:827
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:debug_smp_processor_id+0xe/0x10 lib/smp_processor_id.c:60
Code: 48 c7 c7 80 a1 bc 8c 4c 89 f6 e8 6d b8 0c fa e9 6e ff ff ff 00 00 cc cc 00 00 cc cc 48 c7 c7 40 e1 de 8a 48 c7 c6 80 e1 de 8a <eb> 00 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48
RSP: 0018:ffffc9000d1374b8 EFLAGS: 00000282
RAX: ffffffff81dda7dd RBX: ffffffff81dda7ad RCX: 0000000000000002
RDX: ffff888055238000 RSI: ffffffff8adee180 RDI: ffffffff8adee140
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff215e448
R10: dffffc0000000000 R11: fffffbfff215e449 R12: dffffc0000000000
R13: ffff88802ebb4040 R14: 0000000000077e99 R15: ffff88813fff91c0
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:721
 rcu_read_lock_sched include/linux/rcupdate.h:884 [inline]
 pfn_valid+0x106/0x420 include/linux/mmzone.h:1857
 page_table_check_set+0x25/0x6d0 mm/page_table_check.c:108
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2586/0x3a60 mm/memory.c:1332
 dup_mmap kernel/fork.c:703 [inline]
 dup_mm kernel/fork.c:1547 [inline]
 copy_mm+0xeb0/0x1680 kernel/fork.c:1596
 copy_process+0x19a6/0x40c0 kernel/fork.c:2357
 kernel_clone+0x24b/0x900 kernel/fork.c:2764
 __do_sys_clone kernel/fork.c:2905 [inline]
 __se_sys_clone kernel/fork.c:2889 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2889
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f00b6b9ce59
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:00007f00b7b49fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f00b6e15fa0 RCX: 00007f00b6b9ce59
RDX: 0000200000001fc0 RSI: 0000200000001fc0 RDI: 0000000000042000
RBP: 00007f00b6c32e6f R08: 0000200000002040 R09: 0000200000002040
R10: 0000200000002000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f00b6e16038 R14: 00007f00b6e15fa0 R15: 00007ffdf8c122c8
 </TASK>