rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (2 ticks this GP) idle=9a5c/1/0x4000000000000000 softirq=16433/16433 fqs=5244
rcu: hardirqs softirqs csw/system
rcu: number: 9988384 0 0
rcu: cputime: 6011 46506 0 ==> 52500(ms)
rcu: (detected by 1, t=10502 jiffies, g=16717, q=22575 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6408 Comm: syz.5.119 Not tainted 6.6.101-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x8/0x80 kernel/kcov.c:320
Code: 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 20 20 7e 7e 65 8b 15 21 20 7e 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000006eb8 EFLAGS: 00000046
RAX: ffffffff813c09c9 RBX: 00000000b8e3d370 RCX: 000000000000002e
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880b8e3d37b R09: 1ffff110171c7a6f
R10: dffffc0000000000 R11: ffffed10171c7a70 R12: 0000000000000000
R13: dffffc0000000001 R14: 000000000000002e R15: 0000000000000000
FS: 00007f8565c766c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 0000000024242000 CR4: 00000000003506f0
Call Trace:
phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
__virt_addr_valid+0xb9/0x540 arch/x86/mm/physaddr.c:61
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:7969 [inline]
perf_event_output_forward+0x2e6/0x3a0 kernel/events/core.c:7978
__perf_event_overflow+0x447/0x630 kernel/events/core.c:9703
perf_swevent_overflow kernel/events/core.c:9779 [inline]
perf_swevent_event+0x2f5/0x5c0 kernel/events/core.c:-1
perf_tp_event+0x4f9/0x13a0 kernel/events/core.c:10329
perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10253
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 a9 4e 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:ffffc900000077a0 EFLAGS: 00000206
RAX: 611d18542db20a00 RBX: 1ffff92000000efc RCX: 611d18542db20a00
RDX: dffffc0000000000 RSI: ffffffff8aaaba40 RDI: ffffffff8afc6780
RBP: ffffc900000078a0 R08: ffffffff90da361f R09: 1ffffffff21b46c3
R10: dffffc0000000000 R11: fffffbfff21b46c4 R12: ffffffff8cd35400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
ndisc_send_skb+0xd9a/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:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7010
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 cb 12 e6 f6 e8 16 99 16 f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900040379c0 EFLAGS: 00000282
RAX: 611d18542db20a00 RBX: 0000000000000000 RCX: 611d18542db20a00
RDX: dffffc0000000000 RSI: ffffffff8aaaba40 RDI: 0000000000000001
RBP: ffffc90004037a70 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d
R10: dffffc0000000000 R11: fffffbfff1c9509e R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000806f38
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__rcu_read_unlock+0x3a/0xd0 kernel/rcu/tree_plugin.h:425
Code: 00 00 00 00 fc ff df 65 48 8b 3d d1 4f 93 7e 48 8d 9f 3c 04 00 00 49 89 dc 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 48 ff 0b 75 1d <4c> 8d b7 40 04 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 38 84 c0 75
RSP: 0018:ffffc90004037b30 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880240f843c RCX: 0000000000080000
RDX: ffffc90004b49000 RSI: 000000000007ffff RDI: ffff8880240f8000
RBP: 0000000000000000 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d
R10: dffffc0000000000 R11: fffffbfff1c9509e R12: 1ffff1100481f087
R13: 1ffff1100481f000 R14: dffffc0000000000 R15: dffffc0000000000
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
bpf_test_timer_leave+0x109/0x150 net/bpf/test_run.c:57
bpf_test_timer_continue+0x284/0x380 net/bpf/test_run.c:83
bpf_prog_test_run_flow_dissector+0x42d/0x600 net/bpf/test_run.c:1355
bpf_prog_test_run+0x321/0x390 kernel/bpf/syscall.c:4123
__sys_bpf+0x440/0x800 kernel/bpf/syscall.c:5485
__do_sys_bpf kernel/bpf/syscall.c:5571 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5569 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5569
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: 0033:0x7f8564d8ebe9
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:00007f8565c76038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8564fb5fa0 RCX: 00007f8564d8ebe9
RDX: 0000000000000050 RSI: 0000200000000440 RDI: 000000000000000a
RBP: 00007f8564e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8564fb6038 R14: 00007f8564fb5fa0 R15: 00007ffc76aa8e28