rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (9797 ticks this GP) idle=e6ec/1/0x4000000000000000 softirq=10414/10502 fqs=1415 rcu: hardirqs softirqs csw/system rcu: number: 113691 0 0 rcu: cputime: 1316 2860 3 ==> 4190(ms) rcu: (t=10502 jiffies g=7837 q=2839 ncpus=2) CPU: 0 PID: 5885 Comm: syz.1.2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0x136/0x1c0 kernel/softirq.c:413 Code: 8a e8 9e 50 1d 09 65 66 8b 05 86 24 b2 7e 66 85 c0 75 54 bf 01 00 00 00 e8 67 db 09 00 e8 32 5f 3a 00 fb 65 8b 05 52 24 b2 7e <85> c0 75 05 e8 71 08 af ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc900000075e0 EFLAGS: 00000282 RAX: 0000000000000101 RBX: 0000000000000200 RCX: e67733a5044b3400 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffffffff8afc6b00 RBP: ffffc90000007670 R08: ffffffff90da85ff R09: 1ffffffff21b50bf R10: dffffc0000000000 R11: fffffbfff21b50c0 R12: ffffffff893fa365 R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000000ebc FS: 00007f15e5d056c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000005b15a000 CR4: 00000000003506f0 Call Trace: local_bh_enable include/linux/bottom_half.h:33 [inline] ip6t_do_table+0x1344/0x1500 net/ipv6/netfilter/ip6_tables.c:375 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline] nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:259 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0x136a/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:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x52d/0x7d0 kernel/time/timer.c:2022 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035 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+0x272/0x920 kernel/sched/core.c:5254 Code: db 0f 85 56 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 70 25 1c 09 e8 1b a3 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 RSP: 0018:ffffc90004a6f7f8 EFLAGS: 00000282 RAX: e67733a5044b3400 RBX: 0000000000000000 RCX: e67733a5044b3400 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffff888022c551f8 RBP: ffffc90004a6f850 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad R10: dffffc0000000000 R11: fffffbfff1c951ae R12: ffff888022c53c00 R13: dffffc0000000000 R14: ffff88807d5b3c00 R15: ffff8880b8e3ccc8 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:111 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex+0x36f/0x3f0 kernel/futex/syscalls.c:164 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: 0033:0x7f15e4d8f6c9 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:00007f15e5d050e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f15e4fe5fa8 RCX: 00007f15e4d8f6c9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f15e4fe5fac RBP: 00007f15e4fe5fa0 R08: 0000000000745a46 R09: 0000000000000000 R10: 000000000000000b R11: 0000000000000246 R12: 0000000000000000 R13: 00007f15e4fe6038 R14: 00007fffe2124c10 R15: 00007fffe2124cf8