rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 ticks this GP) idle=9ac4/1/0x4000000000000000 softirq=57984/57984 fqs=5249
rcu: hardirqs softirqs csw/system
rcu: number: 11345170 0 0
rcu: cputime: 6136 46381 0 ==> 52500(ms)
rcu: (detected by 0, t=10502 jiffies, g=63169, q=9168 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14125 Comm: syz.3.7337 Not tainted 6.6.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_preemption_disabled+0xa/0x110 lib/smp_processor_id.c:13
Code: f3 0f 1e fa 48 c7 c7 60 66 fc 8a 48 c7 c6 a0 66 fc 8a eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 41 57 41 56 53 48 83 ec 10 <65> 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 05 8d 5c 96 75 65
RSP: 0018:ffffc900001efd48 EFLAGS: 00000086
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8167810b
RDX: 0000000000000000 RSI: ffffffff8afc66a0 RDI: ffffffff8afc6660
RBP: ffffc900001efeb0 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: ffffffff813c0bcc
R13: dffffc0000000000 R14: ffffffff813c0bcc R15: 1ffff9200003dfc0
FS: 0000555581513500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb2207812f8 CR3: 000000007733c000 CR4: 00000000003506e0
Call Trace:
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xba/0x8b0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
pfn_valid include/linux/mmzone.h:2021 [inline]
__virt_addr_valid+0x439/0x540 arch/x86/mm/physaddr.c:65
kasan_addr_to_slab+0xd/0xd0 mm/kasan/common.c:35
__kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:477
irq_work_queue_on+0xf5/0x220 kernel/irq_work.c:150
rcu_read_unlock_special+0x3a7/0x4c0 kernel/rcu/tree_plugin.h:675
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
__perf_event_output kernel/events/core.c:7983 [inline]
perf_event_output_forward+0x2e6/0x3a0 kernel/events/core.c:7992
__perf_event_overflow+0x447/0x630 kernel/events/core.c:9717
perf_swevent_overflow kernel/events/core.c:9793 [inline]
perf_swevent_event+0x2f5/0x5c0 kernel/events/core.c:-1
perf_tp_event+0x4f9/0x13a0 kernel/events/core.c:10343
perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10267
perf_trace_preemptirq_template+0x281/0x340 include/trace/events/preemptirq.h:14
trace_irq_enable+0xbf/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:rcu_read_unlock_special+0x88/0x4c0 kernel/rcu/tree_plugin.h:682
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 39 58 93 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:ffffc900001f07a0 EFLAGS: 00000206
RAX: 39a7469f3ec3ba00 RBX: 1ffff9200003e0fc RCX: 39a7469f3ec3ba00
RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffffffff8afc66c0
RBP: ffffc900001f08a0 R08: ffffffff90da3607 R09: 1ffffffff21b46c0
R10: dffffc0000000000 R11: fffffbfff21b46c1 R12: ffffffff8cd35400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
ndisc_send_skb+0xd9d/0x14b0 net/ipv6/ndisc.c:521
addrconf_rs_timer+0x2bc/0x600 net/ipv6/addrconf.c:4007
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x52d/0x7d0 kernel/time/timer.c:2022
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x476/0x4f0 kernel/smp.c:418
Code: 75 11 e8 3d e6 0a 00 48 85 db 75 16 e8 33 e6 0a 00 eb 15 e8 2c e6 0a 00 e8 37 a3 f2 08 48 85 db 74 ea e8 1d e6 0a 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 66 43 c7 44 2c
RSP: 0018:ffffc9000cdbfa00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88805d810000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000cdbfad0 R08: ffffffff90da361f R09: 1ffffffff21b46c3
R10: dffffc0000000000 R11: fffffbfff21b46c4 R12: 1ffff920019b7f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920019b7f65
smp_call_function_single+0x352/0x580 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12914 [inline]
__se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12566
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f818938ebe9
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:00007fffac001038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f81895b5fa0 RCX: 00007f818938ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f8189411e19 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81895b5fa0 R14: 00007f81895b5fa0 R15: 0000000000000005