watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.3.1372:5038] Modules linked in: CPU: 0 PID: 5038 Comm: syz.3.1372 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__memcpy+0x0/0x20 arch/x86/lib/memcpy_64.S:31 Code: e1 07 38 c1 7c b2 4c 89 f7 e8 ec a3 44 fd eb a8 66 2e 0f 1f 84 00 00 00 00 00 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 RSP: 0018:ffff8881f6e09980 EFLAGS: 00000256 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff8881da2047c4 RCX: ffffffff8382c224 RDX: 0000000000000044 RSI: ffffffff8524c500 RDI: ffff8881da204780 RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed103b4408f9 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881ed7bfdc0 R13: ffff8881da204780 R14: ffffffff8524c501 R15: ffffffff8524c500 FS: 00007f98ceab16c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020018000 CR3: 00000001e717a000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: dst_cow_metrics_generic+0xa4/0x1b0 net/core/dst.c:208 dst_metrics_write_ptr include/net/dst.h:118 [inline] dst_metric_set include/net/dst.h:179 [inline] icmp6_dst_alloc+0x349/0x550 net/ipv6/route.c:3197 ndisc_send_skb+0x262/0xc30 net/ipv6/ndisc.c:489 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3953 call_timer_fn+0x36/0x390 kernel/time/timer.c:1448 expire_timers kernel/time/timer.c:1493 [inline] __run_timers+0x879/0xbe0 kernel/time/timer.c:1817 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x195/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:538 [inline] smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:unwind_next_frame+0x18cf/0x1ea0 arch/x86/kernel/unwind_orc.c:613 Code: 00 00 66 c7 43 3d 00 00 c6 43 3f 00 65 48 8b 0c 25 28 00 00 00 48 3b 8c 24 a0 02 00 00 0f 85 cd 05 00 00 48 8d 65 d8 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 49 89 d6 49 89 d5 4c 89 f8 4c 29 e8 48 89 RSP: 0018:ffff8881d0c9e938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 1ffff1103a193d4c RCX: b439156f98a93500 RDX: ffff8881d0c9eaa0 RSI: ffff8881d0c9e5e0 RDI: 0000000000000001 RBP: ffff8881d0c9e950 R08: dffffc0000000000 R09: ffff8881d0c9eab0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881d0c9ea68 R13: ffffffff867b9b25 R14: ffff8881d0c9ea60 R15: ffff8881d0c98000 __unwind_start+0x708/0x890 arch/x86/kernel/unwind_orc.c:691 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0xdd/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123 save_stack+0x95/0x880 mm/page_owner.c:122 __set_page_owner+0x33/0x1e0 mm/page_owner.c:191 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2165 [inline] prep_new_page+0x18f/0x370 mm/page_alloc.c:2171 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893 __alloc_pages include/linux/gfp.h:503 [inline] __alloc_pages_node include/linux/gfp.h:516 [inline] alloc_pages_node include/linux/gfp.h:530 [inline] alloc_zeroed_user_highpage_movable include/linux/highmem.h:211 [inline] wp_page_copy+0x20f/0x1820 mm/memory.c:2461 handle_pte_fault mm/memory.c:4044 [inline] __handle_mm_fault mm/memory.c:4152 [inline] handle_mm_fault+0x18cc/0x4990 mm/memory.c:4189 do_user_addr_fault arch/x86/mm/fault.c:1469 [inline] __do_page_fault+0x509/0xbb0 arch/x86/mm/fault.c:1530 page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1206 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x30 arch/x86/lib/copy_user_64.S:205 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 f3 a4 RSP: 0018:ffff8881d0c9f718 EFLAGS: 00050206 RAX: ffffffff822aef01 RBX: 00000000200236a0 RCX: 000000000000b6a0 RDX: 0000000000022fe0 RSI: ffff8881d6757940 RDI: 0000000020018000 RBP: ffff8881d0c9f870 R08: dffffc0000000000 R09: ffffed103acec5fc R10: 0000000000000004 R11: dffffc0000000001 R12: 00007ffffffff000 R13: 0000000000022fe0 R14: 00000000200006c0 R15: ffff8881d6740000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:74 [inline] copyout lib/iov_iter.c:142 [inline] _copy_to_iter+0x2a8/0xd50 lib/iov_iter.c:600 __skb_datagram_iter+0xd8/0x740 net/core/datagram.c:429 skb_copy_datagram_iter+0x41/0x1e0 net/core/datagram.c:537 skb_copy_datagram_msg include/linux/skbuff.h:3562 [inline] unix_dgram_recvmsg+0x725/0x1120 net/unix/af_unix.c:2172 ____sys_recvmsg net/socket.c:2538 [inline] ___sys_recvmsg+0x6a7/0xa60 net/socket.c:2579 __sys_recvmsg net/socket.c:2626 [inline] __do_sys_recvmsg net/socket.c:2636 [inline] __se_sys_recvmsg net/socket.c:2633 [inline] __x64_sys_recvmsg+0x1f4/0x2c0 net/socket.c:2633 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f98cf82fae9 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:00007f98ceab1048 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f98cf9bdfa0 RCX: 00007f98cf82fae9 RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000008 RBP: 00007f98cf8b0746 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f98cf9bdfa0 R15: 00007ffe9c965fb8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5501 Comm: syz.2.1497 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:arch_static_branch arch/x86/include/asm/msr.h:105 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:200 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:164 [inline] RIP: 0010:wrmsr arch/x86/include/asm/msr.h:275 [inline] RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:207 Code: 74 2d 83 ff 30 74 28 eb 10 81 ff d0 00 00 00 74 1e 81 ff e0 00 00 00 74 16 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <0f> 1f 44 00 00 c3 89 f6 31 d2 e9 ac 30 1a 01 66 66 2e 0f 1f 84 00 RSP: 0018:ffff8881f6f081d8 EFLAGS: 00000046 RAX: 0000000000000080 RBX: ffffffff856321e0 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000838 RBP: 0000000000000080 R08: ffffffff8157c22b R09: ffffffff8157c1b7 R10: ffff8881d0ce8fc0 R11: 0000000000000002 R12: dffffc0000000000 R13: 0000000000000002 R14: 0000000000000080 R15: dffffc0000000000 FS: 00007ff9663916c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4519673000 CR3: 00000001d7194000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: apic_write arch/x86/include/asm/apic.h:395 [inline] lapic_next_event+0x5b/0x70 arch/x86/kernel/apic/apic.c:466 clockevents_program_event+0x199/0x2c0 kernel/time/clockevents.c:334 hrtimer_interrupt+0x4b3/0x890 kernel/time/hrtimer.c:1718 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1122 [inline] smp_apic_timer_interrupt+0x110/0x460 arch/x86/kernel/apic/apic.c:1147 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:__read_once_size_nocheck+0x0/0x10 include/linux/compiler.h:286 Code: ff 89 d9 80 e1 07 38 c1 0f 8c ae fc ff ff 48 89 df e8 d4 37 64 00 48 ba 00 00 00 00 00 fc ff df e9 97 fc ff ff e8 e0 07 0b 00 <48> 8b 07 48 89 06 c3 66 0f 1f 84 00 00 00 00 00 be 17 00 00 00 48 RSP: 0018:ffff8881f6f08418 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8881f6f09220 RBX: 1ffff1103ede10ac RCX: 1ffff1103ede10e4 RDX: ffffffff86aa8ebe RSI: ffff8881f6f08560 RDI: ffff8881f6f09218 RBP: ffff8881f6f08710 R08: 0000000000000003 R09: ffff8881f6f08770 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d551d7 R13: ffff8881f6f08560 R14: ffff8881f6f09218 R15: dffffc0000000000 deref_stack_reg arch/x86/kernel/unwind_orc.c:350 [inline] unwind_next_frame+0xfab/0x1ea0 arch/x86/kernel/unwind_orc.c:526 arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123 save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0xd9/0x250 mm/slub.c:2842 skb_clone+0x1c0/0x360 net/core/skbuff.c:1467 dev_queue_xmit_nit+0x258/0xa10 net/core/dev.c:1966 xmit_one net/core/dev.c:3217 [inline] dev_hard_start_xmit+0x12b/0x6b0 net/core/dev.c:3237 sch_direct_xmit+0x28f/0xa10 net/sched/sch_generic.c:336 qdisc_restart net/sched/sch_generic.c:401 [inline] __qdisc_run+0xa14/0x1e80 net/sched/sch_generic.c:409 qdisc_run+0xf8/0x300 include/net/pkt_sched.h:122 __dev_xmit_skb net/core/dev.c:3413 [inline] __dev_queue_xmit+0xb43/0x27e0 net/core/dev.c:3768 arp_xmit_finish net/ipv4/arp.c:632 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] arp_xmit+0xc8/0x290 net/ipv4/arp.c:641 arp_send_dst+0x2ab/0x3a0 net/ipv4/arp.c:319 arp_solicit+0x730/0x920 net/ipv4/arp.c:391 neigh_probe net/core/neighbour.c:1022 [inline] __neigh_event_send+0xdd0/0x13c0 net/core/neighbour.c:1182 neigh_event_send include/net/neighbour.h:447 [inline] neigh_resolve_output+0x1d4/0x770 net/core/neighbour.c:1491 neigh_output include/net/neighbour.h:518 [inline] ip_finish_output2+0xb92/0xfc0 net/ipv4/ip_output.c:236 NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip_output+0x19b/0x3a0 net/ipv4/ip_output.c:440 dst_output include/net/dst.h:438 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0xfaa/0x1850 net/ipv4/ip_output.c:541 __tcp_transmit_skb+0x1dfa/0x33a0 net/ipv4/tcp_output.c:1179 tcp_transmit_skb net/ipv4/tcp_output.c:1195 [inline] tcp_write_xmit+0x17b0/0x5cd0 net/ipv4/tcp_output.c:2478 tcp_send_loss_probe+0x39a/0xb50 net/ipv4/tcp_output.c:2598 tcp_write_timer_handler+0x368/0x920 net/ipv4/tcp_timer.c:615 tcp_write_timer+0xad/0x1d0 net/ipv4/tcp_timer.c:639 call_timer_fn+0x36/0x390 kernel/time/timer.c:1448 expire_timers kernel/time/timer.c:1493 [inline] __run_timers+0x879/0xbe0 kernel/time/timer.c:1817 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x195/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:538 [inline] smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x45/0x60 kernel/locking/spinlock.c:199 Code: 08 00 74 0c 48 c7 c7 90 3b eb 85 e8 75 12 43 fd 48 83 3d cd 2c 9a 01 00 74 29 48 89 df e8 e3 e7 fa fc 66 90 fb bf 01 00 00 00 66 d4 f3 fc 65 8b 05 ab 7e b1 7b 85 c0 74 02 5b c3 e8 34 45 af RSP: 0018:ffff8881d670f910 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff8881f6f57b40 RCX: dffffc0000000000 RDX: 0000000040000002 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8881d670f970 R08: ffffffff81799989 R09: fffffbfff0c96e5b R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f57b40 R13: ffff8881d0ce8fc0 R14: dffffc0000000000 R15: 0000000000000000 finish_lock_switch kernel/sched/core.c:3347 [inline] finish_task_switch+0x130/0x590 kernel/sched/core.c:3447 context_switch kernel/sched/core.c:3611 [inline] __schedule+0xb0d/0x1320 kernel/sched/core.c:4307 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:4558 retint_kernel+0x1b/0x1b RIP: 0010:atomic64_fetch_add include/asm-generic/atomic-instrumented.h:921 [inline] RIP: 0010:atomic_long_fetch_add_release include/asm-generic/atomic-long.h:94 [inline] RIP: 0010:__up_write kernel/locking/rwsem.c:1496 [inline] RIP: 0010:up_write+0xa6/0x270 kernel/locking/rwsem.c:1636 Code: 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1f 64 48 00 49 c7 45 08 00 00 00 00 4c 89 ef be 08 00 00 00 e8 fa 36 48 00 <48> c7 c0 ff ff ff ff f0 49 0f c1 45 00 a8 02 75 34 48 c7 44 24 20 RSP: 0018:ffff8881d670fbc0 EFLAGS: 00000256 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1103e222301 RBX: ffff8881f1111c80 RCX: ffffffff814bbda6 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8881f1111c78 RBP: ffff8881d670fc80 R08: dffffc0000000000 R09: ffffed103e222390 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103ace1f7c R13: ffff8881f1111c78 R14: dffffc0000000000 R15: 0000000000000003 inode_unlock include/linux/fs.h:830 [inline] perf_fasync+0x89/0xa0 kernel/events/core.c:6003 ioctl_fioasync fs/ioctl.c:579 [inline] do_vfs_ioctl+0xb93/0x1720 fs/ioctl.c:684 ksys_ioctl fs/ioctl.c:742 [inline] __do_sys_ioctl fs/ioctl.c:749 [inline] __se_sys_ioctl fs/ioctl.c:747 [inline] __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7ff96710fae9 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:00007ff966391048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff96729dfa0 RCX: 00007ff96710fae9 RDX: 00000000200015c0 RSI: 0000000000005452 RDI: 0000000000000003 RBP: 00007ff967190746 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff96729dfa0 R15: 00007ffcb66262f8