watchdog: BUG: soft lockup - CPU#0 stuck for 226s! [syz.3.1606:6184] Modules linked in: CPU: 0 PID: 6184 Comm: syz.3.1606 Not tainted 5.15.161-syzkaller-00425-gb92c0d35d015 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:validate_xmit_vlan net/core/dev.c:3661 [inline] RIP: 0010:validate_xmit_skb+0xad/0xce0 net/core/dev.c:3694 Code: 8d b7 82 00 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 20 42 0f b6 04 20 84 c0 0f 85 c7 09 00 00 41 0f b7 1e 89 de 83 e6 01 31 ff 9e a9 89 fd f6 c3 01 4c 89 6c 24 28 4c 89 74 24 18 75 0f e8 6a RSP: 0018:ffffc900000073e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000008000 RCX: ffff88810f3fbb40 RDX: 0000000000000501 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900000074b0 R08: ffffffff83e6ac43 R09: ffffffff83e692ec R10: 0000000000000002 R11: ffff88810f3fbb40 R12: dffffc0000000000 R13: 000061164fdd19e9 R14: ffff888127aa1442 R15: ffff888127aa13c0 FS: 00007fa044c3a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ed18ff8 CR3: 0000000128744000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __dev_queue_xmit+0x12d2/0x2e70 net/core/dev.c:4246 dev_queue_xmit+0x17/0x20 net/core/dev.c:4288 neigh_hh_output include/net/neighbour.h:501 [inline] neigh_output include/net/neighbour.h:515 [inline] ip6_finish_output2+0xf5e/0x16e0 net/ipv6/ip6_output.c:126 __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 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565 __do_softirq kernel/softirq.c:603 [inline] invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664 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:__schedule+0x0/0x1590 kernel/sched/core.c:6390 Code: 4c 89 25 f3 e6 1e 02 eb 05 e8 cc 3f 8c fc 48 c7 c7 c0 94 57 87 e8 d0 df 01 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 00 RSP: 0018:ffffc90000cb78d8 EFLAGS: 00000246 RAX: 1ffff11021e7f8be RBX: 1ffff92000196f20 RCX: ffffffff84e60e00 RDX: 1ffffffff0e99800 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000cb7968 R08: ffffffff874cc000 R09: ffffffff874cc008 R10: ffffffff874cc018 R11: ffffffff874cc010 R12: ffffc90000cb7900 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000196f1c 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:do_vfs_ioctl+0x2243/0x2a80 fs/ioctl.c:858 Code: 4c 89 ff e8 9f b3 f2 ff 48 8b 4c 24 70 48 8b 7c 24 18 be 11 00 00 00 4c 89 f2 e8 d8 83 f9 ff 89 c3 48 c7 44 24 40 0e 36 e0 45 <41> c7 45 00 00 00 00 00 41 c7 45 0a 00 00 00 00 41 c7 45 14 00 00 RSP: 0018:ffffc90000cb7a60 EFLAGS: 00000287 RAX: ffffffff81bfe3ce RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc90004970000 RSI: 0000000000000021 RDI: 0000000000000022 RBP: ffffc90000cb7e98 R08: ffffffff81bfe3c0 R09: ffffed1021248b85 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 R13: fffff52000196f54 R14: 0000000000000000 R15: ffff88811a7b81a8 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl+0x99/0x190 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: 0033:0x7fa045fc0ef9 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:00007fa044c3a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa046178f80 RCX: 00007fa045fc0ef9 RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000008 RBP: 00007fa046033b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa046178f80 R15: 00007ffc11f04ae8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6054 Comm: syz.2.1590 Not tainted 5.15.161-syzkaller-00425-gb92c0d35d015 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:asm_sysvec_apic_timer_interrupt+0x0/0x20 arch/x86/include/asm/idtentry.h:637 Code: e8 d5 be df ff e9 b0 04 00 00 0f 01 ca fc 6a ff e8 b5 03 00 00 48 89 c4 48 8d 6c 24 01 48 89 e7 e8 05 be df ff e9 90 04 00 00 <0f> 01 ca fc 6a ff e8 95 03 00 00 48 89 c4 48 8d 6c 24 01 48 89 e7 RSP: 0018:ffffc900001d0498 EFLAGS: 00000046 RAX: 651ed624fc8c6800 RBX: 0000000000000020 RCX: ffffffff815c7c10 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881f7138c08 RBP: ffffc900001d06b8 R08: dffffc0000000000 R09: ffffed103ee27182 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811e69fe18 R13: ffff888126f37280 R14: ffff88811e69fe42 R15: 1ffff11023cd3fc3 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb22f7bf98 CR3: 000000010cd61000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: dev_queue_xmit+0x17/0x20 net/core/dev.c:4288 neigh_hh_output include/net/neighbour.h:501 [inline] neigh_output include/net/neighbour.h:515 [inline] ip6_finish_output2+0xf5e/0x16e0 net/ipv6/ip6_output.c:126 __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 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565 __do_softirq kernel/softirq.c:603 [inline] invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664 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 91 70 65 00 49 8b 1f 48 85 db 4c 8b 6d c0 0f 85 ce 00 00 00 4c 89 e7 e8 89 c9 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:ffffc90000d87040 EFLAGS: 00000282 RAX: 0000000080000001 RBX: ffff888123830b38 RCX: 0000000000000002 RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000d87090 R08: ffffffff8191fd19 R09: fffffbfff0e52e93 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0 R13: ffff888123830000 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:_compound_head include/linux/page-flags.h:201 [inline] RIP: 0010:release_pages+0x227/0x1370 mm/swap.c:953 Code: bf 7e d4 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 9c c5 16 00 4c 8b 2b <4c> 89 ee 48 83 e6 01 31 ff e8 cb 82 d4 ff 4c 89 e8 48 83 e0 01 0f RSP: 0018:ffffc90000d87320 EFLAGS: 00000246 RAX: 1ffffd40008ee901 RBX: ffffea0004774808 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d87430 R08: ffffffff819be1ec R09: fffff9400095fccf R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000068 R13: 0000000000000000 R14: 0000000000000000 R15: ffffea0004774800 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:320 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xd0/0x180 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1510 [inline] zap_pmd_range mm/memory.c:1559 [inline] zap_pud_range mm/memory.c:1588 [inline] zap_p4d_range mm/memory.c:1609 [inline] unmap_page_range+0x1c70/0x1ed0 mm/memory.c:1630 unmap_single_vma mm/memory.c:1675 [inline] unmap_vmas+0x389/0x560 mm/memory.c:1707 exit_mmap+0x3e4/0x940 mm/mmap.c:3215 __mmput+0x95/0x310 kernel/fork.c:1179 mmput+0x5b/0x170 kernel/fork.c:1202 exit_mm kernel/exit.c:552 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:865 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: 0033:0x7fb1b7fa1ef9 Code: Unable to access opcode bytes at RIP 0x7fb1b7fa1ecf. RSP: 002b:00007fb1b6c1b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 00007fb1b8159f88 RCX: 00007fb1b7fa1ef9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb1b8159f8c RBP: 00007fb1b8159f80 R08: 00007ffffbae60b0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1b8159f8c R13: 0000000000000000 R14: 00007ffffbad7930 R15: 00007ffffbad7a18