RBP: 00007f7bc4915f80 R08: 00007ffe523810b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7bc4915f8c
R13: 0000000000000000 R14: 00007ffe5233eb30 R15: 00007ffe5233ec18
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.4.18:375]
Modules linked in:
CPU: 0 PID: 375 Comm: syz.4.18 Not tainted 6.1.90-syzkaller-00004-g79436849ef1d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:unwind_next_frame+0x3bc/0x700 arch/x86/kernel/unwind_frame.c:315
Code: 98 74 0b 48 8b 7d d0 e8 62 03 00 00 eb 1c 48 8b 5d d0 48 89 d8 48 c1 e8 03 80 3c 10 00 74 08 48 89 df e8 47 ec 84 00 48 8b 03 <4c> 89 f7 48 89 45 d0 48 89 c6 e8 45 03 00 00 89 c1 b0 01 84 c9 0f
RSP: 0018:ffffc900000075b8 EFLAGS: 00000246
RAX: ffffc9000b28ee88 RBX: ffffc90000007fe8 RCX: ffffffff877a1000
RDX: dffffc0000000000 RSI: ffffffff8518f3da RDI: ffffc9000b28ff48
RBP: ffffc90000007630 R08: ffffc90000007728 R09: 000000000000000c
R10: ffffc90000007730 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000007690 R14: ffffc90000007640 R15: 1ffff92000000ec8
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa186045000 CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 ref_tracker_alloc+0x175/0x450 lib/ref_tracker.c:91
 __netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 netdev_hold include/linux/netdevice.h:4092 [inline]
 dst_init+0xe1/0x400 net/core/dst.c:52
 dst_alloc+0x18a/0x1e0 net/core/dst.c:96
 ip6_dst_alloc net/ipv6/route.c:345 [inline]
 icmp6_dst_alloc+0xf8/0x510 net/ipv6/route.c:3266
 ndisc_send_skb+0x28b/0xdc0 net/ipv6/ndisc.c:489
 ndisc_send_rs+0x47d/0x5f0 net/ipv6/ndisc.c:719
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3984
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1826
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
 __do_softirq+0x1d8/0x661 kernel/softirq.c:617
 invoke_softirq kernel/softirq.c:472 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:700
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:712
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5295
Code: 74 08 4c 89 ff e8 11 5c 6c 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 39 ff ce 03 fb 49 8d 9d 48 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:ffffc9000b28ef40 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881118eb3c8 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc9000b28ef90 R08: ffffffff819b54a0 R09: fffffbfff0ee5117
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7037c80
R13: ffff8881118ea880 R14: 1ffff1103ee070fc R15: ffff8881f70387e0
 context_switch kernel/sched/core.c:5421 [inline]
 __schedule+0xcaf/0x1550 kernel/sched/core.c:6744
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:7056
 raw_irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:396
 irqentry_exit+0x30/0x40 kernel/entry/common.c:439
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x34/0x80 kernel/kcov.c:311
Code: 8b 0d c0 c6 8c 7e 65 8b 05 c1 c6 8c 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 57 83 b9 6c 0b 00 00 00 74 4e 8b 81 48 0b 00 00 <83> f8 03 75 43 48 8b 91 50 0b 00 00 44 8b 89 4c 0b 00 00 49 c1 e1
RSP: 0018:ffffc9000b28f250 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000080000 RCX: ffff8881118ea880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000b28f250 R08: ffffffff81ba19ca R09: fffff9400090e2d9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00048716c0
R13: 4000000000000002 R14: 1ffffd400090e2d8 R15: dffffc0000000000
 constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
 arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
 folio_test_swapbacked include/linux/page-flags.h:508 [inline]
 folio_test_swapcache include/linux/page-flags.h:549 [inline]
 free_swap_cache+0x9a/0x170 mm/swap_state.c:285
 free_pages_and_swap_cache+0x63/0xa0 mm/swap_state.c:314
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xfe/0x1d0 mm/mmu_gather.c:261
 zap_pte_range mm/memory.c:1540 [inline]
 zap_pmd_range mm/memory.c:1589 [inline]
 zap_pud_range mm/memory.c:1618 [inline]
 zap_p4d_range mm/memory.c:1639 [inline]
 unmap_page_range+0x219d/0x2480 mm/memory.c:1660
 unmap_single_vma mm/memory.c:1706 [inline]
 unmap_vmas+0x4e4/0x660 mm/memory.c:1746
 exit_mmap+0x2d1/0x940 mm/mmap.c:3336
 __mmput+0x95/0x310 kernel/fork.c:1298
 mmput+0x56/0x170 kernel/fork.c:1321
 exit_mm kernel/exit.c:566 [inline]
 do_exit+0xb29/0x2b80 kernel/exit.c:862
 do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
 get_signal+0x169d/0x1820 kernel/signal.c:2880
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7bc47799f9
Code: Unable to access opcode bytes at 0x7f7bc47799cf.
RSP: 002b:00007f7bc55480e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f7bc4915f88 RCX: 00007f7bc47799f9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f7bc4915f8c
RBP: 00007f7bc4915f80 R08: 00007ffe523810b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7bc4915f8c
R13: 0000000000000000 R14: 00007ffe5233eb30 R15: 00007ffe5233ec18
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 516 Comm: syz.4.40 Not tainted 6.1.90-syzkaller-00004-g79436849ef1d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:perf_prepare_sample+0xdc8/0x1ca0 kernel/events/core.c:7541
Code: 29 e8 bc b5 d9 ff 49 8d 5c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 21 d4 20 00 48 c7 03 00 00 00 00 eb 05 <e8> 93 b5 d9 ff 48 8b 5c 24 30 48 89 de 48 81 e6 00 80 00 00 31 ff
RSP: 0018:ffffc900001aff00 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888117b82880
RDX: 0000000000010101 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001afff0 R08: ffffffff819bece4 R09: ffffc900001b0040
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900001b0200
R13: ffffc900001b00a6 R14: ffffc900001b00a0 R15: dffffc0000000000
FS:  00007f46a66f36c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff63df1bfc CR3: 000000012f7e5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __perf_event_output kernel/events/core.c:7641 [inline]
 perf_event_output_forward+0xdb/0x1b0 kernel/events/core.c:7661
 __perf_event_overflow+0x458/0x630 kernel/events/core.c:9409
 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10817
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x41a/0xad0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x40c/0xaa0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:ipv6_addr_is_multicast include/net/ipv6.h:790 [inline]
RIP: 0010:ip6_finish_output2+0x222/0x1840 net/ipv6/ip6_output.c:81
Code: df 42 0f b6 04 30 84 c0 0f 85 f3 10 00 00 44 0f b7 3b 4b 8d 54 3d 18 48 89 d0 48 c1 e8 03 42 0f b6 04 30 84 c0 48 89 54 24 08 <0f> 85 ed 10 00 00 0f b6 1a bf ff 00 00 00 89 de e8 39 cb 00 fd 81
RSP: 0018:ffffc900001b0720 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888133020ab8 RCX: 1ffff1102660415c
RDX: ffff88812106d428 RSI: 0000000000000010 RDI: 0000000000000010
RBP: ffffc900001b0868 R08: ffffffff8474da8d R09: ffffffff8433c8e1
R10: 0000000000000003 R11: ffff888117b82880 R12: ffff8881330223c0
R13: ffff88812106d400 R14: dffffc0000000000 R15: 0000000000000010
 __ip6_finish_output net/ipv6/ip6_output.c:201 [inline]
 ip6_finish_output+0x50f/0xa60 net/ipv6/ip6_output.c:212
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:233
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x7cf/0xdc0 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x47d/0x5f0 net/ipv6/ndisc.c:719
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3984
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1826
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
 __do_softirq+0x1d8/0x661 kernel/softirq.c:617
 invoke_softirq kernel/softirq.c:472 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:700
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:712
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:schedule_debug kernel/sched/core.c:5985 [inline]
RIP: 0010:__schedule+0x136/0x1550 kernel/sched/core.c:6637
Code: 74 08 48 89 df e8 7a 40 9f fc 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 61 40 9f fc 48 81 3b 9d 6e ac 57 <0f> 85 27 0f 00 00 65 8b 05 85 ed e4 7a 25 ff ff ff 7f 83 f8 01 0f
RSP: 0018:ffffc900009f7880 EFLAGS: 00000246
RAX: 1ffff9200013e000 RBX: ffffc900009f0000 RCX: 1ffff9200013ef20
RDX: 0000000000000000 RSI: ffffffff85c9f9e0 RDI: ffffffff85c9f9a0
RBP: ffffc900009f7990 R08: dffffc0000000000 R09: ffffed1022f70511
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888117b82880 R15: ffff8881f7100000
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:7056
 raw_irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:396
 irqentry_exit+0x30/0x40 kernel/entry/common.c:439
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:uprobe_deny_signal+0x45/0x230 kernel/events/uprobes.c:1973
Code: d5 ff 65 4c 8b 35 fb cc 61 7e 49 8d 9e 98 0b 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ae 1f 1c 00 4c 8b 23 <4d> 85 e4 74 28 49 8d 5c 24 20 48 89 d8 48 c1 e8 03 42 80 3c 28 00
RSP: 0018:ffffc900009f7b20 EFLAGS: 00000246
RAX: 1ffff11022f70683 RBX: ffff888117b83418 RCX: 0000000000040000
RDX: ffffc9000f571000 RSI: 0000000000000088 RDI: 0000000000000089
RBP: ffffc900009f7b50 R08: ffffffff81487e3c R09: ffffed1022f70511
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888117b82880 R15: dffffc0000000000
 get_signal+0x163/0x1820 kernel/signal.c:2662
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f46a59799f9
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:00007f46a66f3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f46a5b15f80 RCX: 00007f46a59799f9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007f46a59e78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f46a5b15f80 R15: 00007ffd59045f18
 </TASK>