rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 5074 jiffies s: 1377 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: 4505 Comm: syz.2.40 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x4/0x80 kernel/kcov.c:293
Code: 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 04 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 48 8b 04 24 <65> 48 8b 0d e4 fa 7f 7e 65 8b 15 e5 fa 7f 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc900001e0558 EFLAGS: 00000046
RAX: ffffffff81725eca RBX: ffff8880b8f2a5c0 RCX: 1ffff110171e54c6
RDX: 1ffff110171e54c0 RSI: 7fffffffffffffff RDI: 0000001c44c7118e
RBP: 0000001c44c7118e R08: ffffffff8e1fc32f R09: 1ffffffff1c3f865
R10: dffffc0000000000 R11: fffffbfff1c3f866 R12: 7fffffffffffffff
R13: ffff8880b8f2a630 R14: dffffc0000000000 R15: 0000000000000019
FS:  00007faccd23b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fd19ff8 CR3: 000000005905e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ktime_before include/linux/ktime.h:125 [inline]
 hrtimer_interrupt+0x34a/0x9c0 kernel/time/hrtimer.c:1867
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:xfrm_pols_put include/net/xfrm.h:790 [inline]
RIP: 0010:xfrm_lookup_with_ifid+0x18bd/0x2050 net/xfrm/xfrm_policy.c:3189
Code: 83 fb 01 75 54 e8 a3 87 a2 f8 49 8d 5d 38 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 31 06 00 00 80 0b 20 e9 2f fa ff ff <e8> 7e 87 a2 f8 49 bc 00 00 00 00 00 fc ff df 4d 85 ed 0f 85 72 ff
RSP: 0018:ffffc900001e0780 EFLAGS: 00000296
RAX: ffffffff88dfe8e1 RBX: 0000000000000000 RCX: 0000000000000100
RDX: ffff888027f25940 RSI: 00000000ffffffff RDI: 00000000ffffffff
RBP: ffffc900001e0890 R08: ffffc900001e082f R09: ffffc900001e0820
R10: dffffc0000000000 R11: fffff5200003c106 R12: 00000000ffffffff
R13: ffff88802a103dc0 R14: ffffc900001e09b0 R15: 000000000000000a
 ndisc_send_skb+0x424/0x14e0 net/ipv6/ndisc.c:493
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 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:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5124
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 c0 bb dc 08 e8 ab 2a 2f 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900048cfa18 EFLAGS: 00000286
RAX: 571c47dccf006a00 RBX: 0000000000000000 RCX: 571c47dccf006a00
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0c20
RBP: ffffc900048cfa70 R08: ffff8880b8f3ab03 R09: 1ffff110171e7560
R10: dffffc0000000000 R11: ffffed10171e7561 R12: ffff888027f25940
R13: dffffc0000000000 R14: ffff888026ae9dc0 R15: ffff8880b8f3b5d0
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x11d9/0x40e0 kernel/sched/core.c:6562
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6731
 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6755
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __slab_alloc mm/slub.c:3242 [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+0x1f1/0x2f0 mm/slub.c:3383
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 lsm_inode_alloc security/security.c:596 [inline]
 security_inode_alloc+0x30/0x110 security/security.c:1040
 inode_init_always+0x8f8/0xc90 fs/inode.c:232
 alloc_inode fs/inode.c:268 [inline]
 new_inode_pseudo+0x91/0x1c0 fs/inode.c:1063
 sock_alloc net/socket.c:631 [inline]
 __sock_create+0x129/0x940 net/socket.c:1513
 sock_create net/socket.c:1605 [inline]
 __sys_socket_create net/socket.c:1642 [inline]
 __sys_socket+0xc4/0x190 net/socket.c:1670
 __do_sys_socket net/socket.c:1683 [inline]
 __se_sys_socket net/socket.c:1681 [inline]
 __x64_sys_socket+0x76/0x80 net/socket.c:1681
 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: 0033:0x7faccc39aeb9
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:00007faccd23b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007faccc615fa0 RCX: 00007faccc39aeb9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007faccc408c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faccc616038 R14: 00007faccc615fa0 R15: 00007ffd223e75f8
 </TASK>