rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=42ac/1/0x4000000000000000 softirq=13207/13207 fqs=1478
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   335807          0            0
rcu: 	cputime:     4046       8157           15   ==> 12210(ms)
rcu: 	(t=10500 jiffies g=13009 q=1186 ncpus=2)
CPU: 1 PID: 5980 Comm: syz.1.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:arch_stack_walk+0x0/0x190 arch/x86/kernel/stacktrace.c:17
Code: ff ff e8 33 6f 54 00 31 c0 e6 d4 48 c7 c7 a0 60 15 8d 48 89 de 5b 41 5e 41 5f 5d e9 8a 41 69 09 cc cc cc cc cc cc cc cc cc cc <66> 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 48 83 ec 68 49 89 cf
RSP: 0018:ffffc900001f0078 EFLAGS: 00000246
RAX: ffffc900001f00a0 RBX: 1ffff9200003e010 RCX: 0000000000000000
RDX: ffff88802b9b3c00 RSI: ffffc900001f00a0 RDI: ffffffff81762b60
RBP: ffffc900001f0110 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffc900001f0120 R11: fffffbfff223e0b9 R12: 0000000000000000
R13: ffffc900001f0400 R14: dffffc0000000000 R15: ffffc900001f0120
FS:  000055556c49a500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d263fff CR3: 0000000075e10000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 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_save_free_info+0x28/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1811 [inline]
 slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
 slab_free mm/slub.c:3830 [inline]
 kmem_cache_free+0xf8/0x290 mm/slub.c:3852
 nsim_start_xmit+0x9e/0xc0 drivers/net/netdevsim/netdev.c:42
 __netdev_start_xmit include/linux/netdevice.h:4998 [inline]
 netdev_start_xmit include/linux/netdevice.h:5012 [inline]
 xmit_one net/core/dev.c:3649 [inline]
 dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3665
 __dev_queue_xmit+0x1be8/0x37e0 net/core/dev.c:4478
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0xf7a/0x1690 net/ipv6/ip6_output.c:143
 dst_output include/net/dst.h:470 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 ndisc_send_skb+0xbb9/0x1480 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4043
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x570/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x27d/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:check_region_inline mm/kasan/generic.c:-1 [inline]
RIP: 0010:kasan_check_range+0x12/0x290 mm/kasan/generic.c:187
Code: 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc 66 0f 1f 00 b0 01 48 85 f6 0f 84 b4 01 00 00 55 41 57 <41> 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 13 02 00 00 49 89
RSP: 0018:ffffc9000354fc68 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff88802b9b3c00 RCX: ffffffff8167ffd9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888027d9adf0
RBP: ffffc9000354fd30 R08: ffffffff8e8c626f R09: 1ffffffff1d18c4d
R10: dffffc0000000000 R11: fffffbfff1d18c4e R12: ffff888027d9ae58
R13: 1ffff920006a9f94 R14: 1ffff11004fb35cb R15: ffff888027d9adf0
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_long_read include/linux/atomic/atomic-instrumented.h:3160 [inline]
 is_rwsem_reader_owned kernel/locking/rwsem.c:193 [inline]
 __up_read+0x109/0x6b0 kernel/locking/rwsem.c:1343
 __do_sys_perf_event_open kernel/events/core.c:12973 [inline]
 __se_sys_perf_event_open+0x187b/0x1d40 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: 0033:0x7f8305f9e159
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:00007ffd12610868 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f8306225fa0 RCX: 00007f8305f9e159
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f830603506b R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8306225fac R14: 00007f8306225fa0 R15: 00007f8306225fa0
 </TASK>