rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2667 jiffies s: 63761 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: 22212 Comm: syz.6.5738 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:perf_hw_regs arch/x86/events/core.c:2783 [inline]
RIP: 0010:perf_callchain_kernel+0x164/0x690 arch/x86/events/core.c:2797
Code: 90 00 00 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 1d 4c d2 00 4d 8b 36 4c 89 f6 48 83 e6 02 31 ff e8 fc 29 81 00 <49> 83 e6 02 75 4f 65 4c 8b 35 ae 73 01 7f 49 81 c4 98 00 00 00 4c
RSP: 0018:ffffc90000006b80 EFLAGS: 00000046
RAX: ffffffff8100fb84 RBX: dffffc0000000000 RCX: ffff888028853c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000006cb0 R08: ffffc90000006c3f R09: ffffc90000006be0
R10: dffffc0000000000 R11: fffff52000000d88 R12: ffff8880b8e35558
R13: ffffc90000006be0 R14: 0000000000000000 R15: 1ffff92000000d78
FS:  00007f5a5d9356c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32023ffc CR3: 0000000057000000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000b6e DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 get_perf_callchain+0x236/0x490 kernel/events/callchain.c:204
 perf_callchain kernel/events/core.c:7512 [inline]
 perf_prepare_sample+0x399/0x2020 kernel/events/core.c:7545
 __perf_event_output kernel/events/core.c:7730 [inline]
 perf_event_output_forward+0x197/0x2f0 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 52 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:ffffc900000075a0 EFLAGS: 00000206
RAX: e40bf741e32f4300 RBX: 1ffff92000000ebc RCX: e40bf741e32f4300
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc90000007690 R08: ffffffff90b1027f R09: 1ffffffff216204f
R10: dffffc0000000000 R11: fffffbfff2162050 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]
 is_bpf_text_address+0x27a/0x2a0 kernel/bpf/core.c:737
 kernel_text_address+0x9c/0xd0 kernel/extable.c:125
 __kernel_text_address+0x9/0x30 kernel/extable.c:79
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709
 rcu_do_batch kernel/rcu/tree.c:2297 [inline]
 rcu_core+0x9a3/0x1740 kernel/rcu/tree.c:2557
 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:perf_trace_init+0x19e/0x2d0 kernel/trace/trace_event_perf.c:222
Code: f8 13 03 00 84 c0 0f 85 9c 00 00 00 e8 fb 01 f8 ff 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 d5 27 49 00 48 8b 1b <48> 81 fb e0 2c b8 8c 74 45 e8 d4 01 f8 ff e9 d1 fe ff ff 44 89 e1
RSP: 0018:ffffc90003fa7c38 EFLAGS: 00000246
RAX: 1ffffffff19e81fc RBX: ffffffff8cf40f20 RCX: 0000000000080000
RDX: ffffc9001c1f1000 RSI: 000000000000c1fe RDI: 000000000000c1ff
RBP: 0000000000000002 R08: ffffffff8e2121af R09: 1ffffffff1c42435
R10: dffffc0000000000 R11: fffffbfff1c42436 R12: 00000000000004f0
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000060340
 perf_tp_event_init+0x89/0x110 kernel/events/core.c:10119
 perf_try_init_event+0x12b/0x3d0 kernel/events/core.c:11634
 perf_init_event kernel/events/core.c:11698 [inline]
 perf_event_alloc+0xea0/0x21e0 kernel/events/core.c:11990
 __do_sys_perf_event_open kernel/events/core.c:12526 [inline]
 __se_sys_perf_event_open+0x5dc/0x1ec0 kernel/events/core.c:12418
 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: 0033:0x7f5a5c99de99
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:00007f5a5d935028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f5a5cc25fa0 RCX: 00007f5a5c99de99
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000200000000800
RBP: 00007f5a5ca33eaf R08: 000000000000000a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5a5cc26038 R14: 00007f5a5cc25fa0 R15: 00007ffc39830158
 </TASK>