watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.2:7859] Modules linked in: irq event stamp: 44017 hardirqs last enabled at (44016): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 hardirqs last disabled at (44017): [] sysvec_apic_timer_interrupt+0xf/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (8716): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (8716): [] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 softirqs last disabled at (16921): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (16921): [] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 CPU: 0 PID: 7859 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x20 kernel/kcov.c:289 Code: 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 f8 fe ff ff 0f 1f 84 00 00 00 00 00 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 RSP: 0000:ffffc90000007618 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff8880526125e0 RCX: 0000000000000100 RDX: ffff888042f022e0 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888042f02000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0200000000000000 R12: dffffc0000000000 R13: ffff888042f022e0 R14: ffff888042f022f0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7f6db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002f731000 CR3: 000000007e630000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:69 [inline] list_add_tail include/linux/list.h:102 [inline] list_move_tail include/linux/list.h:230 [inline] fq_pie_qdisc_dequeue+0x71a/0x9c0 net/sched/sch_fq_pie.c:248 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x1b2/0x1780 net/sched/sch_generic.c:415 __dev_xmit_skb net/core/dev.c:3868 [inline] __dev_queue_xmit+0x2215/0x3b10 net/core/dev.c:4210 dev_queue_xmit include/linux/netdevice.h:3085 [inline] neigh_connected_output+0x3c2/0x550 net/core/neighbour.c:1581 neigh_output include/net/neighbour.h:544 [inline] ip6_finish_output2+0x55a/0x1560 net/ipv6/ip6_output.c:134 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline] ip6_finish_output+0x69a/0x1170 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:458 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] ndisc_send_skb+0xa63/0x1850 net/ipv6/ndisc.c:508 ndisc_send_rs+0x132/0x6f0 net/ipv6/ndisc.c:718 addrconf_rs_timer+0x3f1/0x870 net/ipv6/addrconf.c:3936 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:lock_is_held_type+0x103/0x140 kernel/locking/lockdep.c:5781 Code: 00 00 b8 ff ff ff ff 65 0f c1 05 68 ad f2 75 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48 RSP: 0000:ffffc900050b7780 EFLAGS: 00000292 RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8c7990c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000094001 R12: ffff888042545940 R13: 0000000000000001 R14: 00000000ffffffff R15: ffff888042546430 xa_entry include/linux/xarray.h:1198 [inline] xas_reload+0x29a/0x490 include/linux/xarray.h:1577 next_uptodate_page+0x154/0x4a0 mm/filemap.c:3444 next_map_page mm/filemap.c:3479 [inline] filemap_map_pages+0xd42/0x13d0 mm/filemap.c:3551 do_fault_around mm/memory.c:4493 [inline] do_read_fault mm/memory.c:4525 [inline] do_fault mm/memory.c:4659 [inline] do_pte_missing mm/memory.c:3647 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault+0x285f/0x41c0 mm/memory.c:5089 handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x60a/0x10e0 mm/gup.c:1147 populate_vma_page_range+0x2df/0x420 mm/gup.c:1543 __mm_populate+0x105/0x3b0 mm/gup.c:1652 mm_populate include/linux/mm.h:3153 [inline] vm_mmap_pgoff+0x2c2/0x3b0 mm/util.c:548 ksys_mmap_pgoff+0x7d/0x5a0 mm/mmap.c:1440 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f93579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f6d5cc EFLAGS: 00000296 ORIG_RAX: 00000000000000c0 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000b36000 RDX: 0000000001000005 RSI: 0000000000008031 RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 6.4.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: netns cleanup_net RIP: 0010:kvm_wait+0xa8/0x110 arch/x86/kernel/kvm.c:1064 Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 66 0f b6 07 40 38 c6 74 1b 48 83 c4 10 c3 c3 e8 53 9f 52 00 66 90 0f 00 2d 0a 47 11 09 fb f4 <48> 83 c4 10 c3 66 90 0f 00 2d fa 46 11 09 f4 48 83 c4 10 c3 89 74 RSP: 0018:ffffc900001e0b48 EFLAGS: 00000242 RAX: 00000000005b3d2c RBX: 0000000000000000 RCX: 1ffffffff22ae54e RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000 RBP: ffff888042f020f0 R08: 0000000000000001 R09: ffffffff91529dc7 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: ffffed10085e041e R14: 0000000000000001 R15: ffff8880b993d440 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020297000 CR3: 0000000049214000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:598 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8cb/0xb50 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x204/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:350 [inline] fq_pie_timer+0x96/0x2a0 net/sched/sch_fq_pie.c:377 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:207 Code: 81 e1 00 01 00 00 65 48 8b 14 25 c0 bb 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 0c 16 00 00 85 c0 74 2b 8b 82 e8 15 00 00 <83> f8 02 75 20 48 8b 8a f0 15 00 00 8b 92 ec 15 00 00 48 8b 01 48 RSP: 0018:ffffc90000a9fb20 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888017673b80 RSI: ffffffff88904369 RDI: 0000000000000005 RBP: ffffffff89536fe0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 1ffffffff18f47d1 R12: ffffffff8e41fca0 R13: ffffc90000a9fca8 R14: dffffc0000000000 R15: 000000000004eb5b rcu_read_unlock include/linux/rcupdate.h:802 [inline] inet_twsk_purge+0x7c9/0x900 net/ipv4/inet_timewait_sock.c:336 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:614 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308