rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10467 ticks this GP) idle=40e4/1/0x4000000000000000 softirq=33104/33105 fqs=2990
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1380160          0            0
rcu: 	cputime:    15372      37097           65   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=45685 q=967 ncpus=2)
CPU: 1 PID: 10720 Comm: syz.1.1788 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:deref_stack_reg+0x1d1/0x240 arch/x86/kernel/unwind_orc.c:406
Code: 05 c2 4b 00 49 bf 00 00 00 00 00 fc ff df 48 89 ef e8 63 08 00 00 49 89 c6 48 8b 5c 24 20 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 c5 fd a3 00 4c 89 33 b0 01 eb 0e e8 c9 c1 4b 00
RSP: 0018:ffffc900001f02d8 EFLAGS: 00000246
RAX: 1ffff9200003e089 RBX: ffffc900001f0448 RCX: ffff888018b50000
RDX: 0000000000000100 RSI: 0000000000000001 RDI: ffffc900059dfb60
RBP: ffffc900059dfb60 R08: ffff888018b50000 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc900059e0000
R13: 1ffff9200003e083 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f3ee87f86c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfa2e17dac CR3: 00000000641d5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x1789/0x2970 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
 slab_alloc_node mm/slub.c:3495 [inline]
 slab_alloc mm/slub.c:3503 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3510 [inline]
 kmem_cache_alloc+0x11a/0x2d0 mm/slub.c:3519
 dst_alloc+0x105/0x170 net/core/dst.c:90
 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:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 60 23 33 09 e8 ab 29 30 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:ffffc900059df838 EFLAGS: 00000282
RAX: f9280b8e2b2b1e00 RBX: 0000000000000000 RCX: f9280b8e2b2b1e00
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: ffffffff8b1c9860
RBP: ffffc900059df890 R08: ffffffff911c75ff R09: 1ffffffff2238ebf
R10: dffffc0000000000 R11: fffffbfff2238ec0 R12: ffff888018b50000
R13: dffffc0000000000 R14: ffff888018b51e00 R15: ffff8880b8f3cac8
 context_switch kernel/sched/core.c:5384 [inline]
 __schedule+0x155b/0x45a0 kernel/sched/core.c:6700
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
 irqentry_exit+0x67/0x70 kernel/entry/common.c:438
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:lock_release+0xc/0x8c0 kernel/locking/lockdep.c:5762
Code: 89 df e8 27 b0 76 00 e9 0e fa ff ff bb 2f 00 00 00 e9 24 fa ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 49 89 f4 48 89 7c
RSP: 0018:ffffc900059dfc20 EFLAGS: 00000246
RAX: 1ffff92000b3bf95 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff81af3b28 RDI: ffff88802ba1f0a8
RBP: ffffc900059dfc30 R08: ffffffff911c75ff R09: 1ffffffff2238ebf
R10: dffffc0000000000 R11: fffffbfff2238ec0 R12: 1ffff92000b3bf8c
R13: 1ffff92000b3bfb8 R14: ffff88802ba1f040 R15: ffffc900059dfca0
 __mutex_unlock_slowpath+0xcc/0x6c0 kernel/locking/mutex.c:907
 __do_sys_perf_event_open kernel/events/core.c:12960 [inline]
 __se_sys_perf_event_open+0x1848/0x1c50 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: 0033:0x7f3ee799ce59
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:00007f3ee87f8028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f3ee7c16090 RCX: 00007f3ee799ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f3ee7a32d6f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3ee7c16128 R14: 00007f3ee7c16090 R15: 00007ffcb451f528
 </TASK>