watchdog: BUG: soft lockup - CPU#0 stuck for 122s! [syz.1.1104:6063]
Modules linked in:
CPU: 0 PID: 6063 Comm: syz.1.1104 Not tainted 5.15.167-syzkaller-02003-g5e4635681cf1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ipv6_get_ifaddr+0x165/0x640 net/ipv6/addrconf.c:2053
Code: e8 f0 27 1c fd 4c 89 6c 24 20 49 8d 9e d8 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 fe 75 5e fd 48 8b 1b <48> 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 e5 75 5e fd
RSP: 0018:ffffc90000007b00 EFLAGS: 00000246
RAX: 1ffff1102679db1b RBX: ffff88811399d000 RCX: ffff88812826bb40
RDX: 0000000000000100 RSI: 0b00000000000000 RDI: 0100007f00000000
RBP: ffffc90000007bf8 R08: ffffffff8454343d R09: ffffed1022733a6e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888125dfe000 R14: ffff888133ced800 R15: 00000000000080fe
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c920008 CR3: 0000000135efa000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ndisc_send_rs+0x9a/0x6a0 net/ipv6/ndisc.c:674
 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
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__schedule+0xcd4/0x1590
Code: 44 24 48 42 0f b6 04 28 84 c0 0f 85 7f 02 00 00 41 80 24 24 fc 4c 89 f7 48 8b 74 24 08 e8 24 33 1b fc 48 89 c7 e8 ac 1d 68 fc <48> 8b 44 24 50 48 c7 44 24 60 0e 36 e0 45 49 c7 44 05 00 00 00 00
RSP: 0018:ffffc90000967360 EFLAGS: 00000282
RAX: 0000000080000001 RBX: 1ffff1103ee07081 RCX: 0000000000000002
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffffc90000967450 R08: dffffc0000000000 R09: ffffed102504d769
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88812826bb40
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881f7038408
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:6916
 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398
 irqentry_exit+0x30/0x40 kernel/entry/common.c:432
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lookup_page_ext mm/page_ext.c:265 [inline]
RIP: 0010:page_ext_get+0xa7/0x140 mm/page_ext.c:148
Code: 42 4c 89 f9 48 c1 e9 16 48 8d 1c c8 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 91 72 fa ff 48 8b 1b 48 85 db 74 20 <4d> 89 fe 49 c1 ee 0f e8 9d 20 b8 ff 41 83 e6 7f 49 c1 e6 05 4c 01
RSP: 0018:ffffc900009675f8 EFLAGS: 00000286
RAX: 1ffff11047ffec00 RBX: ffff88823fff5000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000506de00 RDI: 000000ffffffffc0
RBP: ffffc90000967618 R08: ffffffff81b8367b R09: 0000000000000010
R10: ffffc90000967450 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffea000506de00 R14: 000000ffffffffc0 R15: 0000000000141b78
 __reset_page_owner+0x41/0x190 mm/page_owner.c:157
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __vunmap+0x7bc/0x8f0 mm/vmalloc.c:2652
 __vfree mm/vmalloc.c:2700 [inline]
 vfree+0x7f/0xb0 mm/vmalloc.c:2731
 kcov_put kernel/kcov.c:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __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:2904
 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
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe2d7ad7ff9
Code: Unable to access opcode bytes at RIP 0x7fe2d7ad7fcf.
RSP: 002b:00007fe2d6751038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fe2d7c8ff80 RCX: 00007fe2d7ad7ff9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007fe2d7b4a296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe2d7c8ff80 R15: 00007ffc677c4258
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10 Comm: kworker/u4:1 Not tainted 5.15.167-syzkaller-02003-g5e4635681cf1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x10/0x60 kernel/kcov.c:206
Code: 89 fb e8 13 00 00 00 48 8b 3d 14 3e b9 05 48 89 de e8 f4 8e 41 00 5b 5d c3 cc 55 48 89 e5 48 8b 45 08 65 48 8b 0d f0 15 92 7e <65> 8b 15 f1 15 92 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75
RSP: 0018:ffffc900000a7830 EFLAGS: 00000202
RAX: ffffffff8165b57b RBX: 1ffff1103ee07af1 RCX: ffff8881002693c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900000a7830 R08: ffffffff8165b54a R09: ffffed103ee271d3
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8881f703d788 R14: ffff8881f7138e80 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0c3068018 CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 csd_lock_wait kernel/smp.c:440 [inline]
 smp_call_function_many_cond+0x85b/0x9b0 kernel/smp.c:969
 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
 </TASK>