rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10352 ticks this GP) idle=403c/1/0x4000000000000000 softirq=27757/27796 fqs=5080
rcu: hardirqs softirqs csw/system
rcu: number: 1645496 120 0
rcu: cputime: 18030 34459 30 ==> 52490(ms)
rcu: (t=10500 jiffies g=32057 q=2136 ncpus=2)
CPU: 1 PID: 8931 Comm: syz.3.858 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:unwind_get_return_address+0x80/0xc0 arch/x86/kernel/unwind_orc.c:369
Code: 8b 3b e8 13 d8 1d 00 89 c5 31 ff 89 c6 e8 68 f2 4a 00 85 ed 74 20 e8 af ee 4a 00 43 80 3c 37 00 74 08 48 89 df e8 90 5c a2 00 <48> 8b 03 eb 0e e8 96 ee 4a 00 eb 05 e8 8f ee 4a 00 31 c0 5b 41 5e
RSP: 0018:ffffc900001f0040 EFLAGS: 00000246
RAX: ffffffff813aa211 RBX: ffffc900001f00b0 RCX: ffff888028403c00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff888028403c00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff815c1416
R13: 1ffff9200003e090 R14: dffffc0000000000 R15: 1ffff9200003e016
FS: 00007f546ef6d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000005f1bb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
__call_rcu_common kernel/rcu/tree.c:2721 [inline]
call_rcu+0x158/0x930 kernel/rcu/tree.c:2837
refdst_drop include/net/dst.h:270 [inline]
skb_dst_drop include/net/dst.h:282 [inline]
__dev_queue_xmit+0x90b/0x35a0 net/core/dev.c:4380
dev_queue_xmit include/linux/netdevice.h:3113 [inline]
neigh_hh_output include/net/neighbour.h:527 [inline]
neigh_output include/net/neighbour.h:541 [inline]
ip6_finish_output2+0xdf5/0x1650 net/ipv6/ip6_output.c:141
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xbed/0x14b0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2bc/0x600 net/ipv6/addrconf.c:4006
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x52d/0x7d0 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+0xc7/0x190 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:finish_task_switch+0x27e/0x920 kernel/sched/core.c:5254
Code: 4c 8b 75 d0 4c 89 e7 e8 80 ca 14 09 e8 4b a4 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 0f 85 e2 02 00 00 41 80 a4 24 fb 15 00 00 bf 49 8d 9c 24 58
RSP: 0018:ffffc9000453f7f8 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 951d86af07841600
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffff8880284051f8
RBP: ffffc9000453f850 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: ffff888028403c00
R13: dffffc0000000000 R14: ffff8880306f3c00 R15: ffff8880b8f3cac8
context_switch kernel/sched/core.c:5383 [inline]
__schedule+0x14da/0x44d0 kernel/sched/core.c:6699
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6866
preempt_schedule+0xab/0xc0 kernel/sched/core.c:6890
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
class_preempt_destructor include/linux/preempt.h:478 [inline]
try_to_wake_up+0x756/0x1140 kernel/sched/core.c:4355
wake_up_process kernel/sched/core.c:4480 [inline]
wake_up_q+0xb6/0x100 kernel/sched/core.c:1031
futex_wake+0x40d/0x4b0 kernel/futex/waitwake.c:184
do_futex+0x35d/0x3e0 kernel/futex/syscalls.c:139
__do_sys_futex kernel/futex/syscalls.c:211 [inline]
__se_sys_futex+0x36f/0x3f0 kernel/futex/syscalls.c:192
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f546e18f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f546ef6d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f546e3e5fa8 RCX: 00007f546e18f749
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f546e3e5fac
RBP: 00007f546e3e5fa0 R08: 0000000000745a93 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f546e3e6038 R14: 00007fffa0ee2da0 R15: 00007fffa0ee2e88