watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.4.103:1083]
Modules linked in:
CPU: 1 PID: 1083 Comm: syz.4.103 Not tainted 5.10.223-syzkaller-00011-g1c5354a314ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:___neigh_create+0x10c9/0x1a10 net/core/neighbour.c:635
Code: df e8 1b de df fd 48 8b 45 c8 48 8d 50 0c 48 8b bd 58 ff ff ff 48 8b 75 b8 ff 13 41 89 c6 48 8b 85 68 ff ff ff 42 80 3c 20 00 <48> 8b 9d 60 ff ff ff 74 08 48 89 df e8 e6 dd df fd 48 8b 1b 48 83
RSP: 0000:ffffc900001705e8 EFLAGS: 00000246
RAX: 1ffff11025683002 RBX: ffffffff86d41870 RCX: ffff88810efe2780
RDX: ffff88810b89ac18 RSI: dffffc0000000000 RDI: ffff88812b418178
RBP: ffffc900001706c0 R08: ffffffff83c86079 R09: fffffbfff0da834b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffffff86d41860 R14: 00000000f0463bc2 R15: 000000000000000a
FS:  00007f9ba996b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ba994ad58 CR3: 00000001170a7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __neigh_create+0x32/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x957/0x1850 net/ipv6/ip6_output.c:142
 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:216
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:249
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3963
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:exit_to_user_mode_loop+0x41/0xd0 kernel/entry/common.c:159
Code: 89 fe eb 22 e8 90 4a 52 00 e8 2b 92 f0 00 fa 65 48 8b 05 d2 08 a9 7e 48 8b 18 f7 c3 0e 30 08 00 0f 84 87 00 00 00 fb f6 c3 08 <74> 05 e8 38 b7 57 03 f7 c3 00 10 00 00 74 08 4c 89 f7 e8 18 71 34
RSP: 0000:ffffc90001d4fee0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff88810efe2780
RDX: 1ffff11021dfc4f4 RSI: 0000000000000008 RDI: ffffc90001d4ff58
RBP: ffffc90001d4fef0 R08: ffffffff87084048 R09: ffffffff87084058
R10: ffffffff87084050 R11: ffffffff87084043 R12: ffffffff84c00c7a
R13: 0000000000000000 R14: ffffc90001d4ff58 R15: 0000000000000000
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x4e/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f9baacf1ef9
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:00007f9ba996b038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f9baaea9f80 RCX: 00007f9baacf1ef9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f9baad649f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9baaea9f80 R15: 00007ffd97d02378
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 467 Comm: syz.3.31 Not tainted 5.10.223-syzkaller-00011-g1c5354a314ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:kvm_set_cpu_l1tf_flush_l1d+0x0/0x20 arch/x86/include/asm/hardirq.h:66
Code: 83 f8 01 b8 02 00 00 00 83 d8 00 89 05 69 78 dd 05 83 f8 02 0f 84 70 ff ff ff e9 7b ff ff ff cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 48 c7 c7 20 ac 04 85 e8 b0 11 83 03 65 c6 05 3a 9a db
RSP: 0018:ffffc900000073a8 EFLAGS: 00000002
RAX: 0000000000010501 RBX: ffffc900000073d8 RCX: ffffffff8708b903
RDX: 1ffffffff0e10800 RSI: ffffffff85601e60 RDI: 0000000000010000
RBP: ffffc900000073c8 R08: ffffffff87084008 R09: ffffffff87084018
R10: ffffffff87084010 R11: ffffffff87084003 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555b124a8 CR3: 00000001378d0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:661
RIP: 0010:queued_write_lock_slowpath+0x1a1/0x390 kernel/locking/qrwlock.c:79
Code: e8 f4 48 57 00 eb 20 f3 90 42 0f b6 04 33 84 c0 74 15 44 89 f9 80 e1 07 80 c1 03 38 c1 7c 08 4c 89 ff e8 d2 48 57 00 41 8b 07 <3d> 00 01 00 00 75 d6 43 0f b6 04 34 84 c0 75 53 c7 44 24 50 00 01
RSP: 0018:ffffc90000007480 EFLAGS: 00000246
RAX: 00000000000001ff RBX: 1ffffffff0da834d RCX: ffffffff8150f89b
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff86d41a68
RBP: ffffc90000007530 R08: dffffc0000000000 R09: fffffbfff0da834e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000e9a
R13: 00000000000000ff R14: dffffc0000000000 R15: ffffffff86d41a68
 queued_write_lock include/asm-generic/qrwlock.h:95 [inline]
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
 _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:319
 ___neigh_create+0xccc/0x1a10 net/core/neighbour.c:626
 __neigh_create+0x32/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x957/0x1850 net/ipv6/ip6_output.c:142
 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:216
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:249
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3963
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:update_stack_state+0x3f2/0x460 arch/x86/kernel/unwind_frame.c:248
Code: 00 4c 8b 33 48 8b 5d d0 48 83 c3 48 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 06 25 76 00 4c 89 33 43 80 3c 3c 00 <4c> 8b 75 b0 74 08 4c 89 f7 e8 50 24 76 00 b3 01 49 83 3e 00 0f 85
RSP: 0018:ffffc90000e072d0 EFLAGS: 00000246
RAX: 1ffff920001c0e8d RBX: ffffc90000e07468 RCX: 1ffff920001c0e8f
RDX: 1ffff920001c0e86 RSI: ffffc90000e07bf8 RDI: ffffc90000e07478
RBP: ffffc90000e07388 R08: ffffc90000e07508 R09: 000000000000000a
R10: ffffc90000e07510 R11: dffffc0000000001 R12: 1ffff920001c0e8c
R13: 0000000000000000 R14: ffffffff81422470 R15: dffffc0000000000
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:305
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:121
 save_stack+0x97/0x240 mm/page_owner.c:146
 __reset_page_owner+0x36/0x150 mm/page_owner.c:174
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 free_pcp_prepare mm/page_alloc.c:1421 [inline]
 free_unref_page_prepare+0x2ae/0x2d0 mm/page_alloc.c:3336
 free_unref_page mm/page_alloc.c:3391 [inline]
 free_the_page+0x9e/0x370 mm/page_alloc.c:5407
 __free_pages+0x67/0xc0 mm/page_alloc.c:5418
 __vunmap+0x7bc/0x8f0 mm/vmalloc.c:2301
 __vfree mm/vmalloc.c:2349 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2380
 kcov_put kernel/kcov.c:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x33d/0x7b0 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x129/0x190 kernel/task_work.c:165
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc83/0x2a50 kernel/exit.c:863
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2782
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f2cdae2def9
Code: Unable to access opcode bytes at RIP 0x7f2cdae2decf.
RSP: 002b:00007f2cd9a86038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffea RBX: 00007f2cdafe6058 RCX: 00007f2cdae2def9
RDX: 0000000000000094 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f2cdaea09f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2cdafe6058 R15: 00007ffe4d4a33b8