rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2631 jiffies s: 136901 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: 21857 Comm: syz.3.5627 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:rcu_lockdep_current_cpu_online+0x33/0x120 kernel/rcu/tree.c:768
Code: 4b 96 7e b0 01 f7 c1 00 00 f0 00 0f 85 d5 00 00 00 83 3d f3 ec b3 0c 00 0f 84 c8 00 00 00 65 ff 05 9a 4b 96 7e e8 1d cb be 08 <89> c3 83 f8 08 0f 83 c2 00 00 00 49 be 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc900001e0030 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000000 RCX: bf312217eb64e500
RDX: ffff8880539cda00 RSI: ffffffff8adee180 RDI: ffffffff8adee140
RBP: ffffc900001e0158 R08: dffffc0000000000 R09: 1ffffffff215e448
R10: dffffc0000000000 R11: fffffbfff215e449 R12: ffffffff8cb80280
R13: 1ffff9200003c018 R14: ffff888030672300 R15: 0000000000000000
FS:  00007ff1f93f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3334f3 CR3: 0000000023860000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
 bpf_prog_run_array include/linux/bpf.h:1658 [inline]
 trace_call_bpf+0x1f2/0x6b0 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 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_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 e2 82 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0380 EFLAGS: 00000206
RAX: bf312217eb64e500 RBX: 1ffff9200003c078 RCX: bf312217eb64e500
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adee1a0
RBP: ffffc900001e0480 R08: ffffffff90af22cf R09: 1ffffffff215e459
R10: dffffc0000000000 R11: fffffbfff215e45a R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ip6_dst_lookup_tail+0x1010/0x1600 net/ipv6/ip6_output.c:1140
 icmpv6_route_lookup+0xfe/0x5a0 net/ipv6/icmp.c:366
 icmp6_send+0x1091/0x1a60 net/ipv6/icmp.c:603
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_link_failure+0x37/0x4c0 net/ipv6/route.c:2831
 dst_link_failure include/net/dst.h:423 [inline]
 ndisc_error_report+0x10e/0x160 net/ipv6/ndisc.c:733
 neigh_invalidate+0x23b/0x460 net/core/neighbour.c:1064
 neigh_timer_handler+0x929/0x1090 net/core/neighbour.c:1151
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:___slab_alloc+0x393/0x1240 mm/slub.c:3107
Code: 48 c7 44 24 70 00 00 00 00 9c 8f 44 24 70 f7 44 24 70 00 02 00 00 0f 85 de 02 00 00 f7 c5 00 02 00 00 74 01 fb 49 83 7d 18 00 <0f> 84 71 05 00 00 48 c7 44 24 70 00 00 00 00 9c 8f 44 24 70 48 8b
RSP: 0018:ffffc90005c0fce8 EFLAGS: 00000246
RAX: bf312217eb64e500 RBX: ffff888142a4f8c0 RCX: bf312217eb64e500
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adee1a0
RBP: 0000000000000246 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: ffff8880539cda00
R13: ffff8880b8f446f0 R14: ffffffff7fff0000 R15: ffff8880b8f44710
 __slab_alloc mm/slub.c:3240 [inline]
 slab_alloc_node mm/slub.c:3325 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc_lru+0x104/0x2e0 mm/slub.c:3390
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 sock_alloc_inode+0x24/0xc0 net/socket.c:306
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x5f/0x1c0 fs/inode.c:1063
 sock_alloc net/socket.c:631 [inline]
 __sock_create+0x129/0x940 net/socket.c:1514
 sock_create net/socket.c:1606 [inline]
 __sys_socket_create net/socket.c:1643 [inline]
 __sys_socket+0xc4/0x190 net/socket.c:1671
 __do_sys_socket net/socket.c:1684 [inline]
 __se_sys_socket net/socket.c:1682 [inline]
 __x64_sys_socket+0x76/0x80 net/socket.c:1682
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff1fb19ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff1f93f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ff1fb415fa0 RCX: 00007ff1fb19ce59
RDX: 0000000000000002 RSI: 0000000000000003 RDI: 000000000000000f
RBP: 00007ff1fb232e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff1fb416038 R14: 00007ff1fb415fa0 R15: 00007fff6cdede58
 </TASK>