RBP: 00007f1c83f90ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1c84135fa0 R15: 00007ffca54b2618
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.1352:5334]
Modules linked in:
CPU: 0 PID: 5334 Comm: syz.4.1352 Tainted: G        W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:46 [inline]
RIP: 0010:update_stack_state+0x1e9/0x4c0 arch/x86/kernel/unwind_frame.c:224
Code: 10 48 8b 45 a8 42 0f b6 04 28 84 c0 0f 85 89 00 00 00 44 8b 2b 45 85 ed 0f 95 c0 48 8b 55 98 4c 39 fa 0f 93 c1 20 c1 4c 39 f2 <0f> 92 c0 20 c8 3c 01 75 17 48 8b 8d 60 ff ff ff 4c 39 f9 0f 97 c0
RSP: 0018:ffff8881f6e09378 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f6e094e8 RCX: 1ffff1103edc1201
RDX: ffff8881f6e099b0 RSI: 1ffff1103edc129e RDI: ffff8881f6e09540
RBP: ffff8881f6e09448 R08: dffffc0000000000 R09: ffff8881f6e094e8
R10: ffffed103edc12a9 R11: 1ffff1103edc129d R12: ffff8881f6e094f0
R13: 0000000000000002 R14: ffff8881f6e0a000 R15: ffff8881f6e02000
FS:  00007f1c825776c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c83f0e93f CR3: 00000001d4b3e000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000602
Call Trace:
 <IRQ>
 unwind_next_frame+0x3f7/0x760 arch/x86/kernel/unwind_frame.c:311
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0xf0 kernel/stacktrace.c:123
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x162/0x200 mm/kasan/common.c:529
 kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:537
 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_trace+0xe6/0x290 mm/slub.c:2854
 kmalloc include/linux/slab.h:556 [inline]
 dst_cow_metrics_generic+0x55/0x1c0 net/core/dst.c:201
 dst_metrics_write_ptr include/net/dst.h:118 [inline]
 dst_metric_set include/net/dst.h:179 [inline]
 icmp6_dst_alloc+0x38c/0x5b0 net/ipv6/route.c:3205
 ndisc_send_skb+0x270/0xba0 net/ipv6/ndisc.c:493
 ndisc_send_rs+0x6e5/0x960 net/ipv6/ndisc.c:707
 addrconf_rs_timer+0x2c7/0x600 net/ipv6/addrconf.c:3955
 call_timer_fn+0x3c/0x380 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x81d/0xb60 kernel/time/timer.c:1817
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x236/0x660 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x197/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 kernel/locking/spinlock.c:199
Code: 12 48 89 fb 48 c7 c7 b0 2d cb 85 e8 31 7f 62 fd 48 89 df 48 83 3d c6 33 a0 01 00 74 27 e8 93 37 1d fd 66 90 fb bf 01 00 00 00 <e8> 72 7a 16 fd 65 8b 05 87 93 d7 7b 85 c0 74 03 5b 5d c3 e8 7f 4d
RSP: 0018:ffff8881e61971c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8881e61971d0 R08: dffffc0000000000 R09: fffffbfff0c57781
R10: fffffbfff0c57781 R11: 1ffffffff0c57780 R12: ffff8881f6e57b40
R13: ffff8881e804ee78 R14: 0000000000000000 R15: ffff8881e03aee40
 finish_lock_switch kernel/sched/core.c:3349 [inline]
 finish_task_switch+0x12e/0x590 kernel/sched/core.c:3449
 context_switch kernel/sched/core.c:3613 [inline]
 __schedule+0xa57/0x12a0 kernel/sched/core.c:4309
 preempt_schedule_irq+0x9b/0x110 kernel/sched/core.c:4560
 retint_kernel+0x1b/0x1b
RIP: 0010:__sanitizer_cov_trace_switch+0x0/0xd0 kernel/kcov.c:290
Code: 07 00 00 00 4a 89 7c 01 10 4a 89 74 01 18 4a 89 44 01 20 48 ff c2 48 89 11 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <48> 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9 07 0f 87 b2 00 00 00
RSP: 0018:ffff8881e6197478 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103d70e896 RBX: ffff8881eb874000 RCX: ffff8881e03aee40
RDX: 0000000000000000 RSI: ffffffff861f8830 RDI: 0000000000000002
RBP: ffff8881e61974a8 R08: dffffc0000000000 R09: ffffed103eb99751
R10: ffffed103eb99751 R11: 1ffff1103eb99750 R12: ffff8881c5ef4800
R13: dffffc0000000000 R14: ffff8881e6197540 R15: 0000000000000002
 notifier_call_chain kernel/notifier.c:98 [inline]
 __raw_notifier_call_chain kernel/notifier.c:399 [inline]
 raw_notifier_call_chain+0xa0/0x120 kernel/notifier.c:406
 call_netdevice_notifiers_info net/core/dev.c:1670 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:1682 [inline]
 call_netdevice_notifiers net/core/dev.c:1696 [inline]
 dev_close_many+0x2c4/0x440 net/core/dev.c:1439
 rollback_registered_many+0x451/0xf40 net/core/dev.c:8627
 rollback_registered net/core/dev.c:8692 [inline]
 unregister_netdevice_queue+0x2e1/0x450 net/core/dev.c:9786
 unregister_netdevice include/linux/netdevice.h:2732 [inline]
 __tun_detach+0xb40/0x1340 drivers/net/tun.c:747
 tun_detach drivers/net/tun.c:763 [inline]
 tun_chr_close+0x92/0x140 drivers/net/tun.c:3563
 __fput+0x2a3/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x146/0x170 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xa43/0x2660 kernel/exit.c:861
 do_group_exit+0x13e/0x300 kernel/exit.c:984
 get_signal+0xdee/0x13d0 kernel/signal.c:2738
 do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x13e/0x170 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f1c83f0e969
Code: Bad RIP value.
RSP: 002b:00007f1c82576fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 00007f1c84135fa0 RCX: 00007f1c83f0e969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000008000
RBP: 00007f1c83f90ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1c84135fa0 R15: 00007ffca54b2618
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0x23/0x40 arch/x86/kernel/process.c:577