rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10499 ticks this GP) idle=df9c/1/0x4000000000000000 softirq=27616/27618 fqs=5233
rcu: hardirqs softirqs csw/system
rcu: number: 1220826 0 0
rcu: cputime: 18533 33956 68 ==> 52500(ms)
rcu: (t=10501 jiffies g=34057 q=2444 ncpus=2)
CPU: 1 PID: 9313 Comm: syz.3.930 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rcu_read_unlock_special+0x83/0x4d0 kernel/rcu/tree_plugin.h:763
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 be b3 91 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001f0380 EFLAGS: 00000206
RAX: 0ab82536a5227200 RBX: 1ffff9200003e074 RCX: 0ab82536a5227200
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: ffffffff8b1d32e0
RBP: ffffc900001f0448 R08: ffffffff911ed5ff R09: 1ffffffff223dabf
R10: dffffc0000000000 R11: fffffbfff223dac0 R12: ffffffff8d137000
R13: dffffc0000000000 R14: ffff8880b8f3d1d0 R15: 1ffff110171e7a3a
FS: 00007fb9877f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2fd44a CR3: 000000003119e000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
is_bpf_text_address+0x27e/0x2a0 kernel/bpf/core.c:744
kernel_text_address+0xa0/0xd0 kernel/extable.c:125
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
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+0x6a/0x4d0 mm/slab.h:770
slab_alloc_node mm/slub.c:3495 [inline]
kmem_cache_alloc_node+0x1af/0x310 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1316 [inline]
ndisc_alloc_skb+0xa6/0x450 net/ipv6/ndisc.c:423
ndisc_send_rs+0x27d/0x690 net/ipv6/ndisc.c:707
addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4036
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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:preempt_schedule_irq+0xba/0x150 kernel/sched/core.c:7011
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 21 8c c5 f6 e8 ec 86 f6 f6 fb bf 01 00 00 00 31 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc90018967ac0 EFLAGS: 00000282
RAX: 0ab82536a5227200 RBX: 0000000000000000 RCX: 0ab82536a5227200
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 0000000000000001
RBP: ffffc90018967b70 R08: ffffffff8e8c772f R09: 1ffffffff1d18ee5
R10: dffffc0000000000 R11: fffffbfff1d18ee6 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200312cf58
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:37
Code: e8 75 8c a3 08 31 ed eb d4 cc f3 0f 1e fa 89 f6 48 8b 0c 24 31 d2 e9 ff ea ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 dc ea ff ff 66 2e
RSP: 0018:ffffc90018967c38 EFLAGS: 00000256
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8a97ad57
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90018967cc0
RBP: ffffc90018967d30 R08: ffff888026ed9437 R09: 1ffff11004ddb286
R10: dffffc0000000000 R11: ffffed1004ddb287 R12: 1ffff9200312cf8c
R13: ffff888026ed9430 R14: 1ffffffff1d1957e R15: ffffc90018967cc0
instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
atomic_long_try_cmpxchg_release include/linux/atomic/atomic-instrumented.h:4445 [inline]
__mutex_unlock_slowpath+0x1b4/0x6c0 kernel/locking/mutex.c:924
__do_sys_perf_event_open kernel/events/core.c:12961 [inline]
__se_sys_perf_event_open+0x19c3/0x1c60 kernel/events/core.c:12601
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: 0033:0x7fb98959e0d9
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:00007fb9877f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fb989825fa0 RCX: 00007fb98959e0d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007fb989635024 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb989826038 R14: 00007fb989825fa0 R15: 00007ffc7158bee8