syzbot

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 13254 jiffies s: 2069 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5946 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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_cmp4+0x8/0x90 kernel/kcov.c:313
Code: 08 03 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 15 30 cf 7c 7e 65 8b 0d 31 cf 7c 7e 81 e1 00 01 ff 00 74
RSP: 0018:ffffc900001ef858 EFLAGS: 00000046
RAX: ffffffff8194356b RBX: 00007f7cbd79de59 RCX: ffff88802df78000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff223cea0
R10: dffffc0000000000 R11: fffffbfff223cea1 R12: ffffc900001efa8c
R13: ffffc900001ef960 R14: 00007f7cbd79de59 R15: 1ffff9200003df35
FS:  000055555b0df500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cf63fff CR3: 000000002eff0000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 rcu_read_lock include/linux/rcupdate.h:787 [inline]
 is_bpf_text_address+0x5b/0x2a0 kernel/bpf/core.c:741
 kernel_text_address+0xa0/0xd0 kernel/extable.c:125
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
 perf_callchain_kernel+0x304/0x690 arch/x86/events/core.c:2781
 get_perf_callchain+0x231/0x510 kernel/events/callchain.c:204
 perf_callchain kernel/events/core.c:7734 [inline]
 perf_sample_save_callchain include/linux/perf_event.h:1232 [inline]
 perf_prepare_sample+0x3c7/0x1db0 kernel/events/core.c:7778
 __perf_event_output kernel/events/core.c:7966 [inline]
 perf_event_output_forward+0x187/0x3e0 kernel/events/core.c:7987
 __perf_event_overflow+0x461/0x660 kernel/events/core.c:9712
 perf_swevent_overflow kernel/events/core.c:9795 [inline]
 perf_swevent_event+0x319/0x570 kernel/events/core.c:9846
 perf_tp_event+0x620/0x1550 kernel/events/core.c:10373
 perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10292
 perf_trace_preemptirq_template+0x269/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable+0xbb/0xe0 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:netif_skb_features+0xa6a/0x17f0 net/core/dev.c:3623
Code: f9 48 b9 00 00 00 00 00 fc ff df 4d 8b 3f 49 83 c7 28 4c 89 f8 48 c1 e8 03 80 3c 08 00 74 08 4c 89 ff e8 59 c7 5f f9 4d 8b 2f <4d> 85 ed 74 25 e8 dc 52 07 f9 4c 8b 64 24 08 e9 f9 fe ff ff e8 cd
RSP: 0018:ffffc900001f0320 EFLAGS: 00000246
RAX: 1ffffffff16d2ed9 RBX: 0000200000000080 RCX: dffffc0000000000
RDX: ffffffff887f90e5 RSI: ffffffff8e3cdf00 RDI: 000000000000dd86
RBP: ffffc900001f0430 R08: ffff88802df78000 R09: 0000000000000002
R10: 000000000000a888 R11: 0000000000000100 R12: 1ffff11005310416
R13: 0000000000000000 R14: ffff888029882000 R15: ffffffff8b6976c8
 validate_xmit_skb+0x88/0xf30 net/core/dev.c:3719
 __dev_queue_xmit+0x13a9/0x3630 net/core/dev.c:4444
 dev_queue_xmit include/linux/netdevice.h:3113 [inline]
 neigh_hh_output include/net/neighbour.h:527 [inline]
 neigh_output include/net/neighbour.h:541 [inline]
 ip6_finish_output2+0xdf7/0x1620 net/ipv6/ip6_output.c:141
 dst_output include/net/dst.h:467 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 ndisc_send_skb+0xbb9/0x1480 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4029
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x570/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x477/0x4e0 kernel/smp.c:418
Code: 75 11 e8 2c 00 0b 00 48 85 db 75 16 e8 22 00 0b 00 eb 15 e8 1b 00 0b 00 e8 06 b3 0f 09 48 85 db 74 ea e8 0c 00 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc900033c7a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88802df78000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033c7ad0 R08: ffffffff911e7617 R09: 1ffffffff223cec2
R10: dffffc0000000000 R11: fffffbfff223cec3 R12: 1ffff92000678f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000678f65
 smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2951
 __do_sys_perf_event_open kernel/events/core.c:12949 [inline]
 __se_sys_perf_event_open+0x1841/0x1c60 kernel/events/core.c:12601
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7cbd79de59
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:00007ffd5ba33f38 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7cbda25fa0 RCX: 00007f7cbd79de59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f7cbd833e6f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cbda25fac R14: 00007f7cbda25fa0 R15: 00007f7cbda25fa0
 </TASK>