rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2638 jiffies s: 1537 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4431 Comm: syz.1.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:preempt_count_add+0x3e/0x190 kernel/sched/core.c:5713
Code: be 96 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 eb 00 00 00 83 3d e2 da 66 15 00 75 07 65 8b 05 e1 b8 aa 7e 65 01 3d da b8 aa 7e <48> c7 c0 40 91 be 96 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e6 00
RSP: 0018:ffffc900001e03d0 EFLAGS: 00000006
RAX: 0000000000000102 RBX: ffff88804b65bfb8 RCX: ffffffff96be9103
RDX: 0000000000000100 RSI: ffffc9000347b048 RDI: 0000000000000001
RBP: 1ffff110096cb7f7 R08: dffffc0000000000 R09: fffffbfff215c449
R10: fffffbfff215c449 R11: 1ffffffff215c448 R12: 0000000000120000
R13: dffffc0000000000 R14: ffff88804b65bb80 R15: dffffc0000000000
FS:  00007efd8c8ea6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 000000007d2ab000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 migrate_enable+0x86/0x220 kernel/sched/core.c:2246
 bpf_prog_run_array include/linux/bpf.h:1672 [inline]
 trace_call_bpf+0x492/0x680 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 0d 93 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e0760 EFLAGS: 00000206
RAX: 471d5987540ae300 RBX: 1ffff9200003c0f4 RCX: 471d5987540ae300
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef3a0
RBP: ffffc900001e0860 R08: dffffc0000000000 R09: fffffbfff215c467
R10: fffffbfff215c467 R11: 1ffffffff215c466 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ndisc_send_skb+0xda7/0x1510 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5123
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 10 5e c9 08 e8 1b b4 2e 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:ffffc9000491f9b8 EFLAGS: 00000286
RAX: 471d5987540ae300 RBX: 0000000000000000 RCX: 471d5987540ae300
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef3a0
RBP: ffffc9000491fa10 R08: dffffc0000000000 R09: ffffed10171e6afa
R10: ffffed10171e6afa R11: 1ffff110171e6af9 R12: ffff88804b65bb80
R13: dffffc0000000000 R14: ffff88802fd31dc0 R15: ffff8880b8f3b590
 context_switch kernel/sched/core.c:5247 [inline]
 __schedule+0x10f4/0x40b0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:memchr_inv+0x0/0x840 lib/string.c:928
Code: c1 7c e5 48 89 fb 49 89 d4 89 f5 e8 5a 53 c8 f7 48 89 df 89 ee 4c 89 e2 eb ce 31 c0 5b 41 5c 41 5e 41 5f 5d c3 0f 1f 44 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 10 49 89 d7 49 89 fe 48 83
RSP: 0018:ffffc9000491fd28 EFLAGS: 00000246
RAX: ffffffff818f5ae7 RBX: 000000000000001a RCX: 0000000000000002
RDX: 0000000000000058 RSI: 0000000000000000 RDI: ffffc9000491fdf8
RBP: 000000000000001a R08: ffff88804b65bb80 R09: 0000000000000024
R10: 0000000000000023 R11: 0000000000000002 R12: ffffc9000491fdc0
R13: 0000000000000000 R14: 1ffff92000923fb4 R15: 00002000000001c0
 memchr_inv include/linux/fortify-string.h:573 [inline]
 bpf_map_do_batch+0x38/0x600 kernel/bpf/syscall.c:4545
 __sys_bpf+0x65f/0x6d0 kernel/bpf/syscall.c:-1
 __do_sys_bpf kernel/bpf/syscall.c:5131 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5129 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5129
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efd8b98efc9
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:00007efd8c8ea038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007efd8bbe5fa0 RCX: 00007efd8b98efc9
RDX: 0000000000000038 RSI: 00002000000001c0 RDI: 000000000000001a
RBP: 00007efd8ba11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd8bbe6038 R14: 00007efd8bbe5fa0 R15: 00007ffc22c295a8
 </TASK>