RBP: 00007f90a7340040 R08: 00007ffc2abfb080 R09: 00007ffc2abfb0b0 R10: 000000000000f1fe R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f90a8e8efa0 R15: 00007ffc2aba8708 watchdog: BUG: soft lockup - CPU#1 stuck for 265s! [syz.9.275:1480] Modules linked in: CPU: 1 PID: 1480 Comm: syz.9.275 Not tainted 5.15.169-syzkaller-00085-g548ca9fbf844 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:selinux_sk_getsecid+0x5a/0xb0 Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 1b 96 77 ff 48 8b 1b 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 3f 8b 1b 0a e8 df 3d 35 ff bb 08 00 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 RSP: 0018:ffffc900001d0980 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88811c29bb40 RDX: 0000000000000100 RSI: ffffc900001d0b20 RDI: ffff88813d1b1600 RBP: ffffc900001d0998 R08: dffffc0000000000 R09: fffff5200003a169 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffffff85da1440 R14: ffffc900001d0b20 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa831b75d60 CR3: 0000000136cdb000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: security_sk_classify_flow+0x50/0x90 security/security.c:2325 icmpv6_flow_init+0xce/0x130 net/ipv6/icmp.c:1037 ndisc_send_skb+0x25b/0xc90 net/ipv6/ndisc.c:490 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457 expire_timers kernel/time/timer.c:1502 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1773 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565 __do_softirq kernel/softirq.c:603 [inline] invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5024 Code: 74 08 4c 89 ff e8 91 73 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 c9 06 9a 03 fb 49 8d 9d 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30 RSP: 0018:ffffc90000af7380 EFLAGS: 00000282 RAX: 0000000080000001 RBX: ffff88811c29c678 RCX: 0000000000000002 RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000af73d0 R08: ffffffff819206d9 R09: fffffbfff0e53473 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0 R13: ffff88811c29bb40 R14: 1ffff1103ee27081 R15: ffff8881f7138408 context_switch kernel/sched/core.c:5155 [inline] __schedule+0xcd4/0x1590 kernel/sched/core.c:6512 schedule+0x11f/0x1e0 kernel/sched/core.c:6595 schedule_timeout+0xa9/0x370 kernel/time/timer.c:1896 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common+0x285/0x420 kernel/sched/completion.c:117 wait_for_completion+0x18/0x20 kernel/sched/completion.c:138 rcu_barrier+0x376/0x400 kernel/rcu/tree.c:4151 netdev_run_todo+0x14b/0x9f0 net/core/dev.c:10634 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:112 tun_detach drivers/net/tun.c:705 [inline] tun_chr_close+0xc4/0x140 drivers/net/tun.c:3440 __fput+0x228/0x8c0 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xc48/0x2ca0 kernel/exit.c:880 do_group_exit+0x141/0x310 kernel/exit.c:1002 get_signal+0x7a3/0x1630 kernel/signal.c:2907 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320 irqentry_exit+0x12/0x40 kernel/entry/common.c:411 sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0033:0x7ffc2abff7ff Code: Unable to access opcode bytes at RIP 0x7ffc2abff7d5. RSP: 002b:00007f90a7340018 EFLAGS: 00000202 RAX: 0000000000000010 RBX: 00007f90a8d30f10 RCX: 0000000000000001 RDX: 0000000000005b27 RSI: 00007f90a7340060 RDI: 0000000000000001 RBP: 00007f90a7340040 R08: 00007ffc2abfb080 R09: 00007ffc2abfb0b0 R10: 000000000000f1fe R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f90a8e8efa0 R15: 00007ffc2aba8708 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 45 Comm: kworker/u4:2 Not tainted 5.15.169-syzkaller-00085-g548ca9fbf844 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0x843/0x9b0 kernel/smp.c:969 Code: 45 8b 7d 00 44 89 fe 83 e6 01 31 ff e8 e6 a5 0a 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 07 e8 21 a2 0a 00 eb 38 f3 90 <42> 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 05 a2 RSP: 0018:ffffc900002ef840 EFLAGS: 00000293 RAX: ffffffff8165c40b RBX: 1ffff1103ee2784d RCX: ffff8881055a3b40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900002ef958 R08: ffffffff8165c3da R09: ffffed103ee071d3 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8881f713c268 R14: ffff8881f7038e80 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a4ae2e7be CR3: 0000000006a0f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1135 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1207 [inline] text_poke_bp_batch+0x1db/0x720 arch/x86/kernel/alternative.c:1407 text_poke_flush arch/x86/kernel/alternative.c:1598 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1605 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x36a/0x380 kernel/jump_label.c:459 jump_label_update+0x3af/0x450 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:177 static_key_enable+0x1a/0x30 kernel/jump_label.c:190 toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:729 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287