watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz.4.972:5426]
Modules linked in:
CPU: 0 PID: 5426 Comm: syz.4.972 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:kmalloc_size_roundup+0x0/0xc0 mm/slab_common.c:740
Code: 00 49 83 de 00 eb cb 0f 0b 31 c0 eb d8 48 c7 c7 90 c7 05 87 48 89 de e8 2e 13 f4 00 eb bb 66 2e 0f 1f 84 00 00 00 00 00 66 90 <55> 48 89 e5 53 48 83 ec 10 48 89 f8 48 85 ff 74 77 48 83 f8 ff 74
RSP: 0018:ffffc90000007508 EFLAGS: 00000202
RAX: ffff8881333c4a00 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000240
RBP: ffffc90000007550 R08: 0000000000000a20 R09: ffff8881333c4a00
R10: 0000000000000015 R11: dffffc0000000001 R12: ffff888108d5e480
R13: ffff8881333c4a00 R14: 0000000000000240 R15: 0000000000000a20
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000001 CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 alloc_skb include/linux/skbuff.h:1290 [inline]
 nlmsg_new include/net/netlink.h:991 [inline]
 __neigh_notify+0x7d/0x130 net/core/neighbour.c:3504
 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:101
 neigh_del net/core/neighbour.c:225 [inline]
 neigh_remove_one+0x4d5/0x560 net/core/neighbour.c:246
 neigh_forced_gc net/core/neighbour.c:279 [inline]
 neigh_alloc net/core/neighbour.c:485 [inline]
 ___neigh_create+0x447/0x1db0 net/core/neighbour.c:648
 __neigh_create+0x32/0x40 net/core/neighbour.c:737
 ip6_finish_output2+0x9d0/0x1840 net/ipv6/ip6_output.c:125
 __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:update_stack_state+0x3cc/0x460
Code: 39 06 74 0d 48 89 df e8 42 fc ff ff 49 89 c6 eb 19 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 27 e5 84 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
RSP: 0018:ffffc90000a170d0 EFLAGS: 00000246
RAX: 1ffff92000142efb RBX: ffffc90000a177d8 RCX: 1ffff92000142e4f
RDX: 1ffff92000142e46 RSI: ffffc90000a177d0 RDI: ffffc90000a17278
RBP: ffffc90000a17188 R08: ffffc90000a17308 R09: 0000000000000004
R10: ffffc90000a17310 R11: dffffc0000000001 R12: 1ffff92000142e4c
R13: 0000000000000000 R14: ffffffff8175b9eb R15: dffffc0000000000
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:315
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 save_stack+0xf6/0x1e0 mm/page_owner.c:147
 __reset_page_owner+0x54/0x190 mm/page_owner.c:168
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
 free_the_page mm/page_alloc.c:798 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5803
 __vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
 __vfree mm/vmalloc.c:2776 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2807
 kcov_put kernel/kcov.c:428 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:524
 __fput+0x3ab/0x870 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xbd5/0x2b80 kernel/exit.c:875
 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
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:316
 irqentry_exit+0x12/0x40 kernel/entry/common.c:419
 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: 0033:0x7f0425f779f9
Code: Unable to access opcode bytes at 0x7f0425f779cf.
RSP: 002b:00007f0426daa038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f0426106058 RCX: 00007f0425f779f9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000008
RBP: 00007f0425fe58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0426106058 R15: 00007fffdac4c148
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 982 Comm: kworker/1:5 Not tainted 6.1.90-syzkaller-00004-g79436849ef1d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: wg-crypt-wg1 wg_packet_tx_worker
RIP: 0010:queued_write_lock_slowpath+0x17e/0x547 kernel/locking/qrwlock.c:85
Code: 78 2a 9d fc eb 21 f3 90 43 0f b6 44 3d 00 84 c0 74 15 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 08 4c 89 f7 e8 55 2a 9d fc 41 8b 06 <3d> 00 01 00 00 75 d5 43 0f b6 04 3c 84 c0 75 50 c7 44 24 50 00 01
RSP: 0018:ffffc90000ca73a0 EFLAGS: 00000246
RAX: 00000000000001ff RBX: 00000000000000ff RCX: ffffffff851f95cc
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff875ff4b0
RBP: ffffc90000ca7450 R08: dffffc0000000000 R09: fffffbfff0ebfe97
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000194e7e
R13: 1ffffffff0ebfe96 R14: ffffffff875ff4b0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa05a635000 CR3: 0000000006e0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline]
 _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:334
 neigh_forced_gc net/core/neighbour.c:264 [inline]
 neigh_alloc net/core/neighbour.c:485 [inline]
 ___neigh_create+0x1f6/0x1db0 net/core/neighbour.c:648
 __neigh_create+0x32/0x40 net/core/neighbour.c:737
 ip6_finish_output2+0x9d0/0x1840 net/ipv6/ip6_output.c:125
 __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]
 ip6_local_out+0x1ff/0x480 net/ipv6/output_core.c:161
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x506/0x980 net/ipv6/ip6_udp_tunnel.c:109
 send6+0x580/0x860 drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x116/0x1d0 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1d7/0x520 drivers/net/wireguard/send.c:276
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>