RBP: 00007f775988032e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f77599c5058 R15: 00007ffdf493a6f8
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.1.426:2619]
Modules linked in:
CPU: 0 PID: 2619 Comm: syz.1.426 Tainted: G        W         5.10.226-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__ipv6_chk_addr_and_flags+0x13c/0x3d0 net/ipv6/addrconf.c:1941
Code: 44 fd 4c 89 65 a8 4c 89 6d b0 49 8d 9f d8 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 07 90 82 fd 48 8b 1b <48> 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 ee 8f 82 fd
RSP: 0018:ffffc90000006c58 EFLAGS: 00000246
RAX: 1ffff11022608e9b RBX: ffff88810a65f800 RCX: ffff88810df83b40
RDX: 0000000000000501 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000006ce0 R08: ffffffff8425b6a4 R09: 0000000000000040
R10: 0000000000000003 R11: ffff88810df83b40 R12: ffff888125557c28
R13: ffff88811e98a680 R14: dffffc0000000000 R15: ffff888113047400
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd6abac88 CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ipv6_chk_addr_and_flags net/ipv6/addrconf.c:1971 [inline]
 ipv6_chk_addr+0x3b/0x50 net/ipv6/addrconf.c:1910
 icmp6_send+0x315/0x1e00 net/ipv6/icmp.c:486
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_link_failure+0x36/0x190 net/ipv6/route.c:2666
 dst_link_failure include/net/dst.h:420 [inline]
 ip6_tnl_xmit+0xffd/0x2070 net/ipv6/ip6_tunnel.c:1290
 ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1406 [inline]
 ip6_tnl_start_xmit+0xf8b/0x1690 net/ipv6/ip6_tunnel.c:1455
 __netdev_start_xmit include/linux/netdevice.h:4858 [inline]
 netdev_start_xmit include/linux/netdevice.h:4872 [inline]
 xmit_one net/core/dev.c:3607 [inline]
 dev_hard_start_xmit+0x228/0x620 net/core/dev.c:3623
 __dev_queue_xmit+0x16f1/0x28e0 net/core/dev.c:4190
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4223
 neigh_connected_output+0x417/0x450 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:517 [inline]
 ip6_finish_output2+0xf21/0x1850 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:216
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:249
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x6e9/0xc00 net/ipv6/ndisc.c:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3964
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:finish_task_switch+0x143/0x5a0 kernel/sched/core.c:3886
Code: 30 84 c0 0f 85 9f 01 00 00 c7 03 00 00 00 00 4c 89 e7 e8 50 30 69 03 49 8d 9d b8 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 30 <84> c0 0f 85 93 01 00 00 80 63 03 bf 0f 1f 44 00 00 4d 85 ff 74 69
RSP: 0018:ffffc90000f3f120 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff88810df845f8 RCX: 0000000000000002
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000f3f170 R08: ffffffff8188e699 R09: fffffbfff0dc764b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7055fc0
R13: ffff88810df83b40 R14: dffffc0000000000 R15: 0000000000000000
 context_switch kernel/sched/core.c:4049 [inline]
 __schedule+0xbee/0x1330 kernel/sched/core.c:4804
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:5065
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x4f/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:compound_head include/linux/page-flags.h:188 [inline]
RIP: 0010:PageSwapCache include/linux/page-flags.h:403 [inline]
RIP: 0010:free_swap_cache+0x30/0x230 mm/swap_state.c:327
Code: 41 56 41 55 41 54 53 50 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 50 f9 c4 ff 4c 8d 6b 08 4d 89 ef 49 c1 ef 03 43 80 3c 37 00 <74> 08 4c 89 ef e8 16 93 02 00 4d 8b 65 00 44 89 e6 83 e6 01 31 ff
RSP: 0018:ffffc90000f3f400 EFLAGS: 00000246
RAX: ffffffff81a5b3a0 RBX: ffffea000441ab00 RCX: ffff88810df83b40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000441ab00
RBP: ffffc90000f3f430 R08: ffffffff81a5b457 R09: fffff94000883559
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000f3f8c0
R13: ffffea000441ab08 R14: dffffc0000000000 R15: 1ffffd4000883561
 free_pages_and_swap_cache+0x63/0xa0 mm/swap_state.c:355
 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:1385 [inline]
 zap_pmd_range mm/memory.c:1435 [inline]
 zap_pud_range mm/memory.c:1464 [inline]
 zap_p4d_range mm/memory.c:1485 [inline]
 unmap_page_range+0x1f34/0x23b0 mm/memory.c:1506
 unmap_single_vma mm/memory.c:1551 [inline]
 unmap_vmas+0x37f/0x4f0 mm/memory.c:1583
 exit_mmap+0x2f2/0x5c0 mm/mmap.c:3355
 __mmput+0x95/0x2d0 kernel/fork.c:1153
 mmput+0x59/0x170 kernel/fork.c:1176
 exit_mm kernel/exit.c:539 [inline]
 do_exit+0xbda/0x2a50 kernel/exit.c:850
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2790
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x4e/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f775980d721
Code: Unable to access opcode bytes at RIP 0x7f775980d6f7.
RSP: 002b:00007f7758465038 EFLAGS: 00000217
RAX: 0000000000000000 RBX: 00007f77599c5058 RCX: 00007f775980d719
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 000000000000000a
RBP: 00007f775988032e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f77599c5058 R15: 00007ffdf493a6f8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1115 Comm: kworker/u4:6 Tainted: G        W         5.10.226-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
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 e4 ff 78 05 48 89 de e8 54 f0 3c 00 5b 5d c3 cc 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 80 c0 97 7e 65 8b 15 85 c0 97 7e
RSP: 0018:ffffc90000f97710 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff920001f2eed RCX: ffff888118aca780
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000f97810 R08: ffffffff815fc2a6 R09: ffffed103ee0aec9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc90000f97768 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc4d91fd2c CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 smp_call_function_many_cond+0x94e/0xa30 kernel/smp.c:653
 smp_call_function_many kernel/smp.c:716 [inline]
 smp_call_function kernel/smp.c:738 [inline]
 on_each_cpu+0xa8/0x1a0 kernel/smp.c:837
 text_poke_sync arch/x86/kernel/alternative.c:1318 [inline]
 text_poke_bp_batch+0x1d4/0x600 arch/x86/kernel/alternative.c:1509
 text_poke_flush arch/x86/kernel/alternative.c:1677 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1684
 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126
 __jump_label_update+0x36a/0x380 kernel/jump_label.c:459
 jump_label_update+0x379/0x400 kernel/jump_label.c:825
 static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:177
 static_key_enable+0x1a/0x30 kernel/jump_label.c:190
 toggle_allocation_gate+0xbf/0x450 mm/kfence/core.c:624
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298