rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2669 jiffies s: 200489 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: 0 Comm: swapper/0 Not tainted 6.8.0-rc5-syzkaller-00128-gb0b1210bc150 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:42 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:235 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:304
Code: 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 15 60 4d 70 7e 65 8b 05 61 4d 70 7e a9 00 01 ff 00 74 10
RSP: 0018:ffffc90000006938 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000102
RDX: ffffffff8de94680 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff11007a6cd15 R08: ffffffff8a12625e R09: ffffc90000006c70
R10: ffffc90000006c60 R11: fffff52000000d5a R12: ffff88803d3a0000
R13: ffff88803d3668bf R14: 1ffff11007a6cd17 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00008ffc0 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __in6_dev_get include/net/addrconf.h:323 [inline]
 ip6_ignore_linkdown include/net/addrconf.h:414 [inline]
 find_match+0xee/0xbe0 net/ipv6/route.c:742
 __find_rr_leaf+0x275/0x8e0 net/ipv6/route.c:830
 find_rr_leaf net/ipv6/route.c:851 [inline]
 rt6_select net/ipv6/route.c:895 [inline]
 fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2183
 ip6_pol_route+0x268/0x14b0 net/ipv6/route.c:2219
 pol_lookup_func include/net/ip6_fib.h:576 [inline]
 fib6_rule_lookup+0x3c2/0x790 net/ipv6/fib6_rules.c:121
 ip6_route_output_flags_noref net/ipv6/route.c:2627 [inline]
 ip6_route_output_flags+0x38e/0x610 net/ipv6/route.c:2639
 ip6_dst_lookup_tail+0x26b/0x11a0 net/ipv6/ip6_output.c:1147
 ip6_dst_lookup_flow+0xb9/0x180 net/ipv6/ip6_output.c:1250
 sctp_v6_get_dst+0x1054/0x1e20 net/sctp/ipv6.c:384
 sctp_transport_route+0x12c/0x2e0 net/sctp/transport.c:455
 sctp_packet_config+0x460/0xdb0 net/sctp/output.c:103
 sctp_packet_singleton+0x14d/0x320 net/sctp/outqueue.c:777
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x6f1/0x3e60 net/sctp/outqueue.c:1212
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169
 sctp_generate_timeout_event+0x22e/0x360 net/sctp/sm_sideeffect.c:295
 call_timer_fn+0x17e/0x600 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x621/0x830 kernel/time/timer.c:2038
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2051
 __do_softirq+0x2bb/0x942 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x20/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 a8 b9 9c 74 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d d6 04 a1 00 f3 0f 1e fa fb f4 <fa> c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffffff8de07ca8 EFLAGS: 00000246
RAX: ffffffff8de94680 RBX: ffff88801ca88864 RCX: 0000000000195749
RDX: 0000000000000001 RSI: ffff88801ca88800 RDI: ffff88801ca88864
RBP: 0000000000038f98 R08: ffff8880b9436d8b R09: 1ffff11017286db1
R10: dffffc0000000000 R11: ffffffff8b670120 R12: ffff888018b94800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8e8984e0
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x118/0x490 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:134 [inline]
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x374/0x5d0 kernel/sched/idle.c:312
 cpu_startup_entry+0x41/0x60 kernel/sched/idle.c:410
 rest_init+0x2e0/0x300 init/main.c:730
 arch_call_rest_init+0xe/0x10 init/main.c:827
 start_kernel+0x474/0x500 init/main.c:1072
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555
 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:536
 secondary_startup_64_no_verify+0x171/0x17b
 </TASK>