rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2692 jiffies s: 243673 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17502 Comm: syz.0.12346 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x80 kernel/kcov.c:314
Code: 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 03 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 <48> 8b 04 24 65 48 8b 15 64 f9 7f 7e 65 8b 0d 65 f9 7f 7e 81 e1 00
RSP: 0018:ffffc90000007558 EFLAGS: 00000046
RAX: ffffffff818a8928 RBX: 0000000000000014 RCX: ffff888064a51dc0
RDX: 0000000000000100 RSI: 0000000000000014 RDI: 0000000000002000
RBP: ffffc90000007668 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: ffffffff8cb7fc20
R13: ffffe8ffffc346b0 R14: ffffc900000075e0 R15: ffffc90000007600
FS:  00007f7bf24946c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c31b556 CR3: 000000013fec8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_buf_alloc+0x24/0x300 kernel/trace/trace_event_perf.c:409
 perf_trace_preemptirq_template+0x143/0x320 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+0xbf/0x510 kernel/rcu/tree_plugin.h:-1
Code: 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 a0 00 00 00 0f 85 9a 03 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <49> 89 ff 42 c6 44 2b 08 00 48 c7 84 24 80 00 00 00 00 00 00 00 9c
RSP: 0018:ffffc90000007760 EFLAGS: 00000246
RAX: f2f2f2f8f1f1f1f1 RBX: 1ffff92000000ef4 RCX: ffff888064a51dc0
RDX: 0000000000000100 RSI: ffffffff8adf0c00 RDI: ffff888064a51dc0
RBP: ffffc90000007860 R08: ffff88802065df1f R09: 1ffff110040cbbe3
R10: dffffc0000000000 R11: ffffed10040cbbe4 R12: 1ffff1100c94a43f
R13: dffffc0000000000 R14: 0000000000000101 R15: dffffc0000000000
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ndisc_send_skb+0xd9d/0x14e0 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:orc_find arch/x86/kernel/unwind_orc.c:162 [inline]
RIP: 0010:unwind_next_frame+0x19b/0x20b0 arch/x86/kernel/unwind_orc.c:448
Code: 00 00 00 81 0f 92 c0 48 81 fd 08 77 60 8a 0f 93 c1 08 c1 0f 85 d6 00 00 00 48 c7 c0 00 00 00 81 49 89 ee 49 29 c6 49 c1 ee 08 <8b> 35 2f e6 2b 0b 8d 46 ff 44 39 f0 0f 86 f4 17 00 00 44 89 f0 4c
RSP: 0018:ffffc900033c7210 EFLAGS: 00000207
RAX: ffffffff81000000 RBX: ffffc900033c72e8 RCX: ffffffff96bfa100
RDX: dffffc0000000000 RSI: ffffffff8190b8b9 RDI: ffffffff8139198f
RBP: ffffffff8190b8b8 R08: ffffc900033c73b0 R09: 000000000000000a
R10: dffffc0000000000 R11: fffff52000678e69 R12: ffffffff8a898720
R13: dffffc0000000000 R14: 00000000000090b8 R15: ffffc900033c7330
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 kmem_cache_alloc_node+0x14d/0x320 mm/slub.c:3404
 alloc_vmap_area+0x18e/0x18c0 mm/vmalloc.c:1619
 __get_vm_area_node+0x158/0x330 mm/vmalloc.c:2513
 __vmalloc_node_range+0x357/0x13b0 mm/vmalloc.c:3203
 __vmalloc_node mm/vmalloc.c:3308 [inline]
 __vmalloc+0x76/0x80 mm/vmalloc.c:3322
 bpf_prog_alloc_no_stats+0x3a/0x3a0 kernel/bpf/core.c:92
 bpf_prog_alloc+0x1c/0x1b0 kernel/bpf/core.c:130
 bpf_prog_load+0x7c9/0x1560 kernel/bpf/syscall.c:2597
 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5030
 __do_sys_bpf kernel/bpf/syscall.c:5134 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5132 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5132
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7bf159aeb9
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:00007f7bf2494028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f7bf1815fa0 RCX: 00007f7bf159aeb9
RDX: 0000000000000094 RSI: 0000200000000600 RDI: 0000000000000005
RBP: 00007f7bf1608c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7bf1816038 R14: 00007f7bf1815fa0 R15: 00007ffe03784bb8
 </TASK>