rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=f2a4/1/0x4000000000000000 softirq=44988/44990 fqs=5246
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1552238          0            0
rcu: 	cputime:    14503      37985           42   ==> 52520(ms)
rcu: 	(t=10504 jiffies g=52725 q=2170 ncpus=2)
CPU: 0 PID: 12796 Comm: syz.1.1863 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__read_once_word_nocheck+0xc/0x10 include/asm-generic/rwonce.h:67
Code: 89 e1 80 e1 07 38 c1 0f 8c 5d fc ff ff 4c 89 e7 e8 e9 fd a3 00 e9 50 fc ff ff 0f 1f 40 00 53 48 89 fb e8 77 bd 4b 00 48 8b 03 <5b> c3 cc cc f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48
RSP: 0018:ffffc900000074c8 EFLAGS: 00000246
RAX: ffffffff89406f4b RBX: ffffc900000078a8 RCX: ffff888041840000
RDX: 0000000000000100 RSI: 0000000000000002 RDI: ffffc900000078a8
RBP: ffffc900000075f8 R08: ffff888041840000 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc900000075a8
R13: dffffc0000000000 R14: ffffc900000078a8 R15: ffffffff8f8b5986
FS:  00007f988f43d6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73163e6000 CR3: 000000004a806000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0x15f9/0x2970 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 ref_tracker_alloc+0x1b7/0x4c0 lib/ref_tracker.c:209
 __netdev_tracker_alloc include/linux/netdevice.h:4110 [inline]
 netdev_hold include/linux/netdevice.h:4139 [inline]
 dst_init+0xd9/0x480 net/core/dst.c:52
 dst_alloc+0x12e/0x170 net/core/dst.c:94
 ip6_dst_alloc net/ipv6/route.c:344 [inline]
 icmp6_dst_alloc+0x7b/0x400 net/ipv6/route.c:3317
 ndisc_send_skb+0x44e/0x14f0 net/ipv6/ndisc.c:493
 addrconf_rs_timer+0x2d5/0x630 net/ipv6/addrconf.c:4024
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x542/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x481/0x4f0 kernel/smp.c:418
Code: 75 11 e8 c2 06 0b 00 48 85 db 75 16 e8 b8 06 0b 00 eb 15 e8 b1 06 0b 00 e8 9c 36 0c 09 48 85 db 74 ea e8 a2 06 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc9000c7b7a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff888041840000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c7b7ad0 R08: ffffffff911cd5ff R09: 1ffffffff2239abf
R10: dffffc0000000000 R11: fffffbfff2239ac0 R12: 1ffff920018f6f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920018f6f65
 smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5be/0x920 kernel/events/core.c:2959
 __do_sys_perf_event_open kernel/events/core.c:12957 [inline]
 __se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f988e59ce59
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:00007f988f43d028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f988e816090 RCX: 00007f988e59ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f988e632d6f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f988e816128 R14: 00007f988e816090 R15: 00007ffea3716108
 </TASK>