watchdog: BUG: soft lockup - CPU#0 stuck for 222s! [syz.4.103:936] Modules linked in: CPU: 0 PID: 936 Comm: syz.4.103 Not tainted 5.15.156-syzkaller-00821-g29d153aabd54 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:skb_end_pointer include/linux/skbuff.h:1496 [inline] RIP: 0010:skb_is_gso include/linux/skbuff.h:4672 [inline] RIP: 0010:__ip_finish_output+0xdb/0x360 net/ipv4/ip_output.c:300 Code: 89 ea 41 ff 14 24 41 89 c5 44 89 e8 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 8b 7d c0 4c 89 ee e8 98 62 ff ff 89 45 d4 <49> 8d bd d8 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 38 00 74 05 e8 RSP: 0018:ffffc900000067d0 EFLAGS: 00000293 RAX: 00000000000005b4 RBX: ffff88811679be20 RCX: ffff8881150b13c0 RDX: 0000000000000102 RSI: 00000000000005b4 RDI: 0000000000000000 RBP: ffffc90000006810 R08: ffffffff8423bf95 R09: ffffffff8413acb1 R10: 0000000000000003 R11: ffff8881150b13c0 R12: ffff88811679be00 R13: ffff888120558280 R14: ffff888120558280 R15: dffffc0000000000 FS: 00007f0da20686c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e11eff8 CR3: 0000000127f3b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ip_finish_output+0x31/0x210 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x1d6/0x420 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:444 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x1105/0x1c20 net/ipv4/ip_output.c:532 ip_queue_xmit+0x4c/0x70 net/ipv4/ip_output.c:546 __tcp_transmit_skb+0x1e84/0x3920 net/ipv4/tcp_output.c:1402 __tcp_send_ack+0x303/0x710 net/ipv4/tcp_output.c:4007 tcp_send_ack+0x3b/0x60 net/ipv4/tcp_output.c:4013 __tcp_ack_snd_check+0x3fc/0x970 net/ipv4/tcp_input.c:5521 tcp_ack_snd_check net/ipv4/tcp_input.c:5567 [inline] tcp_rcv_established+0x9d6/0x1ac0 net/ipv4/tcp_input.c:5992 tcp_v4_do_rcv+0x3d7/0xa00 net/ipv4/tcp_ipv4.c:1722 tcp_v4_rcv+0x23dd/0x2a70 net/ipv4/tcp_ipv4.c:2125 ip_protocol_deliver_rcu+0x32f/0x710 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_local_deliver+0x2c6/0x590 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:454 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline] ip_sublist_rcv+0x7e2/0x980 net/ipv4/ip_input.c:636 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671 __netif_receive_skb_list_ptype net/core/dev.c:5535 [inline] __netif_receive_skb_list_core+0x37b/0x890 net/core/dev.c:5573 __netif_receive_skb_list net/core/dev.c:5635 [inline] netif_receive_skb_list_internal+0x967/0xcc0 net/core/dev.c:5726 gro_normal_list net/core/dev.c:5880 [inline] gro_normal_one net/core/dev.c:5893 [inline] napi_skb_finish net/core/dev.c:6230 [inline] napi_gro_receive+0x45f/0x920 net/core/dev.c:6260 receive_buf+0x37ce/0x5720 drivers/net/virtio_net.c:1208 virtnet_receive drivers/net/virtio_net.c:1472 [inline] virtnet_poll+0x628/0x1260 drivers/net/virtio_net.c:1585 __napi_poll+0xc4/0x5a0 net/core/dev.c:7042 napi_poll net/core/dev.c:7109 [inline] net_rx_action+0x47d/0xc50 net/core/dev.c:7199 __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 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 71 7a 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 59 9d 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:ffffc90000d07b60 EFLAGS: 00000282 RAX: 0000000080000001 RBX: ffff8881150b1ef8 RCX: 0000000000000002 RDX: 0000000040000002 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000d07bb0 R08: ffffffff81920369 R09: fffffbfff0e52dcb R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f70378c0 R13: ffff8881150b13c0 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:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:190 Code: 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 94 fe b8 05 48 89 de e8 24 80 41 00 5b 5d c3 cc 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 30 03 92 7e 65 8b 15 31 03 92 7e RSP: 0018:ffffc90000d07e48 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff81bb3378 RDX: ffff8881150b13c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d07e80 R08: ffffffff81bb339b R09: ffffed1021d17f08 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000200006c0 R13: ffff88810e8bf800 R14: 0000000000000000 R15: ffff88810e8bf800 fput+0x1a/0x20 fs/file_table.c:352 fdput include/linux/file.h:46 [inline] __do_sys_ioctl fs/ioctl.c:877 [inline] __se_sys_ioctl+0x177/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f0da33eae79 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:00007f0da2068038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0da3586f80 RCX: 00007f0da33eae79 RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000003 RBP: 00007f0da345893e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0da3586f80 R15: 00007ffd3e7afca8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 758 Comm: syz.0.84 Not tainted 5.15.156-syzkaller-00821-g29d153aabd54 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__sanitizer_cov_trace_cmp8+0x7c/0x80 kernel/kcov.c:265 Code: c1 e1 05 48 8d 41 28 4c 39 c8 77 1e 48 c7 44 11 08 06 00 00 00 48 89 7c 11 10 48 89 74 11 18 4c 89 44 11 20 49 ff c2 4c 89 12 <5d> c3 66 90 55 48 89 e5 4c 8b 45 08 65 48 8b 15 a0 00 92 7e 65 8b RSP: 0018:ffffc900001d0008 EFLAGS: 00000046 RAX: 0000000000010101 RBX: ffff8881225fbcd0 RCX: ffff88810d09e2c0 RDX: 0000000000010101 RSI: 0000006c09d692db RDI: 0000006c09d6b9eb RBP: ffffc900001d0008 R08: ffffffff8160c4ab R09: fffffbfff0e52cd6 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000006c09d692db R13: 0000006c09d6b9eb R14: 1ffff110244bf79a R15: 0000000000002710 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0da2047d58 CR3: 000000012d99a000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_add_expires include/linux/hrtimer.h:270 [inline] hrtimer_forward+0x19b/0x2c0 kernel/time/hrtimer.c:1066 hrtimer_forward_now include/linux/hrtimer.h:509 [inline] perf_swevent_hrtimer+0x4b8/0x560 kernel/events/core.c:10724 __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:update_stack_state+0x3bf/0x460 arch/x86/kernel/unwind_frame.c:242 Code: 37 a8 7d 00 65 48 8b 05 5f 68 cd 7e 49 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 07 a8 7d 00 4c 8b 33 48 8b 5d d0 48 83 c3 48 48 RSP: 0018:ffffc900001d0610 EFLAGS: 00000246 RAX: 1ffff92000170e7f RBX: ffffc90000b873f8 RCX: 1ffff9200003a0f7 RDX: 1ffff9200003a0ee RSI: ffffc90000b873f0 RDI: ffffc900001d07b8 RBP: ffffc900001d06c8 R08: ffffc900001d0848 R09: 0000000000000016 R10: ffffc900001d0850 R11: dffffc0000000001 R12: 1ffff9200003a0f4 R13: 0000000000000000 R14: ffffc900001d0788 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:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc_track_caller+0x139/0x260 mm/slub.c:4950 kmalloc_reserve net/core/skbuff.c:357 [inline] __alloc_skb+0x10c/0x550 net/core/skbuff.c:428 alloc_skb include/linux/skbuff.h:1183 [inline] ndisc_alloc_skb+0xf3/0x2d0 net/ipv6/ndisc.c:421 ndisc_send_rs+0x26c/0x6a0 net/ipv6/ndisc.c:687 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 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 71 7a 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 59 9d 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:ffffc90000b87060 EFLAGS: 00000282 RAX: 0000000080000001 RBX: ffff88810d09edf8 RCX: 0000000000000002 RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000b870b0 R08: ffffffff81920369 R09: fffffbfff0e52dcb R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0 R13: ffff88810d09e2c0 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:unwind_get_return_address+0x0/0x90 arch/x86/kernel/unwind_frame.c:15 Code: 5d c3 48 c7 c1 00 85 ad 86 80 e1 07 80 c1 03 38 c1 7c af 48 c7 c7 00 85 ad 86 e8 fb b3 7d 00 eb a1 cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df RSP: 0018:ffffc90000b87358 EFLAGS: 00000202 RAX: 0000000000b87301 RBX: ffffc90000b87360 RCX: 0000000000b87301 RDX: 1ffff92000170e6e RSI: ffffc90000b87c90 RDI: ffffc90000b87360 RBP: ffffc90000b873f0 R08: ffffc90000b87448 R09: 000000000000000b R10: ffffc90000b87450 R11: dffffc0000000001 R12: ffff88810d09e2c0 R13: ffffffff815f8530 R14: ffffc90000b87440 R15: 0000000000000000 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 save_stack+0xf6/0x1e0 mm/page_owner.c:139 __reset_page_owner+0x36/0x190 mm/page_owner.c:156 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: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 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320 irqentry_exit+0x12/0x40 kernel/entry/common.c:411 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: 0033:0x7faf4bf43e79 Code: Unable to access opcode bytes at RIP 0x7faf4bf43e4f. RSP: 002b:00007faf4aba00e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007faf4c0e0060 RCX: 00007faf4bf43e79 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faf4c0e0060 RBP: 00007faf4c0e0058 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf4c0e0064 R13: 0000000000000000 R14: 00007ffe46bac5f0 R15: 00007ffe46bac6d8