rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2652 jiffies s: 8617 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5148 Comm: syz.8.143 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:hlist_empty include/linux/list.h:876 [inline]
RIP: 0010:perf_trace_preemptirq_template+0x119/0x330 include/trace/events/preemptirq.h:14
Code: 03 0e 48 89 0c 24 80 3c 18 00 74 08 4c 89 e7 e8 5d d6 49 00 49 83 3c 24 00 75 23 4c 8b 34 24 4c 89 f0 48 c1 e8 03 80 3c 18 00 <74> 08 4c 89 f7 e8 3d d6 49 00 49 83 3e 00 0f 84 5e 01 00 00 48 8d
RSP: 0018:ffffc900001e0160 EFLAGS: 00000046
RAX: 1ffffd1ffffa6908 RBX: dffffc0000000000 RCX: ffffe8ffffd34840
RDX: 0000000000000000 RSI: ffffffff8adef380 RDI: ffffffff8adef340
RBP: ffffc900001e0228 R08: dffffc0000000000 R09: ffffed10171e6afa
R10: ffffed10171e6afa R11: 1ffff110171e6af9 R12: ffffffff8cb7d320
R13: ffffffff8cb7d2a0 R14: ffffe8ffffd34840 R15: 1ffff9200003c030
FS:  00007f5f7acf66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe160335000 CR3: 0000000052906000 CR4: 00000000003506e0
DR0: 0000200000000380 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:read_pnet include/net/net_namespace.h:370 [inline]
RIP: 0010:sock_net include/net/sock.h:653 [inline]
RIP: 0010:packet_rcv+0x148/0x13d0 net/packet/af_packet.c:2187
Code: be 72 d6 f8 4d 8b 3e 48 8b 44 24 08 4c 8d 70 30 e8 dd 38 1d 01 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 4c 89 f7 e8 8e 72 d6 f8 4d 3b 3e 74 21 e8 e4 43 86 f8 4d 89
RSP: 0018:ffffc900001e0320 EFLAGS: 00000246
RAX: 1ffff11003351406 RBX: ffff88807c181440 RCX: dffffc0000000000
RDX: ffff88802de43b80 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 1ffff1100f830286 R08: dffffc0000000000 R09: ffffed100f830295
R10: ffffed100f830295 R11: 1ffff1100f830294 R12: ffff88807c1813c0
R13: 1ffff1100f830288 R14: ffff888019a8a030 R15: ffff888051778000
 deliver_skb net/core/dev.c:2245 [inline]
 dev_queue_xmit_nit+0x5f2/0xbb0 net/core/dev.c:2315
 xmit_one net/core/dev.c:3666 [inline]
 dev_hard_start_xmit+0x154/0x870 net/core/dev.c:3686
 __dev_queue_xmit+0x1bf1/0x3760 net/core/dev.c:4346
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 neigh_hh_output include/net/neighbour.h:529 [inline]
 neigh_output include/net/neighbour.h:543 [inline]
 ip6_finish_output2+0xd6b/0x1590 net/ipv6/ip6_output.c:138
 dst_output include/net/dst.h:453 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xbfb/0x1510 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x56/0xa0 kernel/rcu/tree.c:721
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 10 ef 65 00 48 c7 c3 c8 57 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 2f 8b 03 65 ff 0d 85 5c 97 7e 74 0c 83 e0 04 c1 e8 02 5b
RSP: 0018:ffffc900044d6fd0 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff8880b8f357c8 RCX: 47a7c4181bda6f00
RDX: ffff88802de43b80 RSI: ffffffff8adef380 RDI: ffffffff8adef340
RBP: ffffc900044d70f8 R08: dffffc0000000000 R09: fffffbfff215c449
R10: fffffbfff215c449 R11: 1ffffffff215c448 R12: ffffffff8c9f6c80
R13: 1ffff9200089ae0c R14: ffffffff8c5e4988 R15: dffffc0000000000
 rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
 rcu_read_lock_held+0x11/0x40 kernel/rcu/update.c:309
 trace_call_bpf+0x19e/0x680 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997
 perf_trace_lock+0x2ec/0x370 include/trace/events/lock.h:50
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x89a/0x910 kernel/locking/lockdep.c:5673
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock include/linux/rcupdate.h:824 [inline]
 is_bpf_text_address+0x28b/0x2a0 kernel/bpf/core.c:737
 kernel_text_address+0x9c/0xd0 kernel/extable.c:125
 __kernel_text_address+0x9/0x30 kernel/extable.c:79
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x1f0 mm/slub.c:3700
 skb_free_head net/core/skbuff.c:762 [inline]
 skb_release_data+0x5db/0x7c0 net/core/skbuff.c:791
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb net/core/skbuff.c:870 [inline]
 consume_skb+0xa2/0x100 net/core/skbuff.c:1035
 netlink_broadcast+0xfd6/0x10d0 net/netlink/af_netlink.c:1521
 uevent_net_broadcast_tagged lib/kobject_uevent.c:372 [inline]
 kobject_uevent_net_broadcast+0x497/0x530 lib/kobject_uevent.c:412
 kobject_uevent_env+0x54c/0x8a0 lib/kobject_uevent.c:608
 device_add+0x91c/0xfb0 drivers/base/core.c:3678
 netdev_register_kobject+0x176/0x310 net/core/net-sysfs.c:2013
 register_netdevice+0x12b9/0x1aa0 net/core/dev.c:10204
 tun_set_iff+0x848/0xed0 drivers/net/tun.c:2851
 __tun_chr_ioctl+0x730/0x1e10 drivers/net/tun.c:3114
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5f79d8efc9
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:00007f5f7acf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5f79fe5fa0 RCX: 00007f5f79d8efc9
RDX: 0000200000000040 RSI: 00000000400454ca RDI: 0000000000000007
RBP: 00007f5f79e11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5f79fe6038 R14: 00007f5f79fe5fa0 R15: 00007fff9f101e68
 </TASK>