watchdog: BUG: soft lockup - CPU#1 stuck for 242s! [syz.1.250:1739]
Modules linked in:
CPU: 1 PID: 1739 Comm: syz.1.250 Not tainted 5.15.157-syzkaller-00896-g38761ec9fc9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:ndisc_constructor+0x29a/0x830 net/ipv6/ndisc.c:350
Code: 00 00 0f 85 cf 00 00 00 e8 13 89 15 fd 49 8d bc 24 95 00 00 00 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 0f 85 9a 04 00 00 41 c6 84 24 95 00 00 00 40 49 8d b4 24 a8
RSP: 0018:ffffc900001d0550 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff88811db68000 RCX: dffffc0000000000
RDX: 0000000000000301 RSI: 0000000000000003 RDI: ffff888127772495
RBP: ffffc900001d05b8 R08: ffffffff845ae347 R09: ffffed102416f7e8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888127772400
R13: 1ffff11023b6d044 R14: ffff88811db68220 R15: 1ffff11024eee492
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33f19ff8 CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ___neigh_create+0xb6a/0x1bd0 net/core/neighbour.c:603
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3978
 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
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 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:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5024
Code: 74 08 4c 89 ff e8 b1 88 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 99 aa 98 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:ffffc90000c97420 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881337b4678 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000c97470 R08: ffffffff81921469 R09: fffffbfff0e52e2b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0
R13: ffff8881337b3b40 R14: 1ffff1103ee27081 R15: ffff8881f7138408
 context_switch kernel/sched/core.c:5155 [inline]
 __schedule+0xcd4/0x1590 kernel/sched/core.c:6512
 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:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:free_unref_page+0x2ba/0x750 mm/page_alloc.c:3648
Code: 8b 4c 24 20 44 8b 44 24 04 e8 f2 0e 00 00 4c 89 f7 48 89 de e8 47 95 38 03 bf 01 00 00 00 e8 9d 0a 9f ff 65 8b 05 fe 21 55 7e <85> c0 48 b9 00 00 00 00 00 fc ff df 0f 85 a5 00 00 00 e8 93 3f 53
RSP: 0018:ffffc90000c97700 EFLAGS: 00000297
RAX: 0000000080000000 RBX: 0000000000000246 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000246 RDI: 0000000000000001
RBP: ffffc90000c977f8 R08: dffffc0000000000 R09: fffffbfff0e4acd8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff87256180
R13: 0000000000000640 R14: ffff8881f703c558 R15: ffffea00049da2c0
 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:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x3fe/0x910 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:878
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 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: 0033:0x7f58881baeb9
Code: Unable to access opcode bytes at RIP 0x7f58881bae8f.
RSP: 002b:00007f5886e350e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f5888373f88 RCX: 00007f58881baeb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5888373f88
RBP: 00007f5888373f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5888373f8c
R13: 0000000000000000 R14: 00007fff26a963d0 R15: 00007fff26a964b8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.157-syzkaller-00896-g38761ec9fc9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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 f6 a8 0a 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 07 e8 31 a5 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 15 a5
RSP: 0018:ffffc90000087840 EFLAGS: 00000293
RAX: ffffffff8165c7eb RBX: 1ffff1103ee2784d RCX: ffff888100268000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000087958 R08: ffffffff8165c7ba 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: 00007fa28b526dc4 CR3: 0000000006a0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 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:300
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 1739 Comm: syz.1.250 Tainted: G             L    5.15.157-syzkaller-00896-g38761ec9fc9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_preemption_disabled+0x0/0x110 lib/smp_processor_id.c:13
Code: 05 3d cd 6f 02 5d c3 cc cc cc 55 48 89 e5 48 c7 c7 a0 2f a3 85 48 c7 c6 e0 2f a3 85 e8 09 00 00 00 5d c3 0f 1f 80 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00
RSP: 0018:ffffc90000007128 EFLAGS: 00000046
RAX: 1ffff92000000e3d RBX: ffffc900000071d8 RCX: dffffc0000000000
RDX: 0000000000000018 RSI: ffffffff85894b00 RDI: ffffffff85a33000
RBP: ffffc90000007130 R08: dffffc0000000000 R09: ffffc900000071c0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000071c0
R13: 1ffff92000000e30 R14: dffffc0000000000 R15: ffff88812577b820
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd026eecd8 CR3: 000000010c6c6000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 get_irq_regs include/asm-generic/irq_regs.h:21 [inline]
 perf_swevent_hrtimer+0x1fa/0x560 kernel/events/core.c:10715
 __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:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x319/0x700 arch/x86/kernel/unwind_frame.c:295
Code: 00 00 00 49 83 c6 48 4c 89 f0 48 c1 e8 03 80 3c 10 00 74 08 4c 89 f7 e8 b5 be 7d 00 49 c7 06 00 00 00 00 b0 01 e9 8c 02 00 00 <4d> 8d 6e 50 4c 89 eb 48 c1 eb 03 80 3c 13 00 74 12 4c 89 ef e8 ee
RSP: 0018:ffffc900000076d8 EFLAGS: 00000283
RAX: ffffc90000c97f30 RBX: ffffc90000c97eb0 RCX: 0000000000007701
RDX: dffffc0000000000 RSI: ffffffff815f3ef0 RDI: ffffc90000c97f48
RBP: ffffc90000007750 R08: ffffc90000007848 R09: 0000000000000022
R10: ffffc90000007850 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffc90000c98000 R14: ffffc90000007760 R15: 1ffff92000000eec
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3519 [inline]
 kmem_cache_free+0x116/0x2e0 mm/slub.c:3535
 __d_free+0x23/0x30 fs/dcache.c:273
 rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2523
 rcu_core+0x517/0x1020 kernel/rcu/tree.c:2763
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 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:finish_task_switch+0x16f/0x7b0 kernel/sched/core.c:5024
Code: 74 08 4c 89 ff e8 b1 88 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 99 aa 98 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:ffffc90000c97420 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881337b4678 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000c97470 R08: ffffffff81921469 R09: fffffbfff0e52e2b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f70378c0
R13: ffff8881337b3b40 R14: 1ffff1103ee07081 R15: ffff8881f7038408
 context_switch kernel/sched/core.c:5155 [inline]
 __schedule+0xcd4/0x1590 kernel/sched/core.c:6512
 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:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:free_unref_page+0x2ba/0x750 mm/page_alloc.c:3648
Code: 8b 4c 24 20 44 8b 44 24 04 e8 f2 0e 00 00 4c 89 f7 48 89 de e8 47 95 38 03 bf 01 00 00 00 e8 9d 0a 9f ff 65 8b 05 fe 21 55 7e <85> c0 48 b9 00 00 00 00 00 fc ff df 0f 85 a5 00 00 00 e8 93 3f 53
RSP: 0018:ffffc90000c97700 EFLAGS: 00000297
RAX: 0000000080000000 RBX: 0000000000000246 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000246 RDI: 0000000000000001
RBP: ffffc90000c977f8 R08: dffffc0000000000 R09: fffffbfff0e4acd8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff87256180
R13: 0000000000000640 R14: ffff8881f703c558 R15: ffffea00049da2c0
 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:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x3fe/0x910 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:878
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 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: 0033:0x7f58881baeb9
Code: Unable to access opcode bytes at RIP 0x7f58881bae8f.
RSP: 002b:00007f5886e350e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f5888373f88 RCX: 00007f58881baeb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5888373f88
RBP: 00007f5888373f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5888373f8c
R13: 0000000000000000 R14: 00007fff26a963d0 R15: 00007fff26a964b8
 </TASK>