rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2687 jiffies s: 114169 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: 30793 Comm: syz.1.8312 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__lock_acquire+0x20f/0x7d10 kernel/locking/lockdep.c:4957
Code: 8b 6d 20 48 c7 c0 00 b1 47 90 49 29 c7 49 c1 ff 06 48 ba ab aa aa aa aa aa aa aa 49 0f af d7 41 89 d7 48 8b 44 24 60 48 85 c0 <4c> 89 a4 24 88 00 00 00 0f 84 3d 01 00 00 4d 8d b4 24 e0 0a 00 00
RSP: 0018:ffffc900001dfec0 EFLAGS: 00000002
RAX: 0000000000000004 RBX: ffffffff8cb2d6e0 RCX: ffffffff96bfa103
RDX: 0000000000000015 RSI: 0000000000000000 RDI: ffffffff8cb2d6e0
RBP: ffffc900001e0110 R08: dffffc0000000000 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1c3f866 R12: ffff8880251c3b80
R13: 0000000000000000 R14: ffff8880251c4658 R15: 0000000000000015
FS:  00007f0c0c42d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000063adc000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:883 [inline]
 pfn_valid include/linux/mmzone.h:1857 [inline]
 __virt_addr_valid+0x1a5/0x540 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140
 rcu_read_unlock_special+0x3c9/0x510 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997
 perf_trace_preemptirq_template+0x268/0x320 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+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 92 30 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0760 EFLAGS: 00000206
RAX: 3752e4e4310bd100 RBX: 1ffff9200003c0f4 RCX: 3752e4e4310bd100
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0c20
RBP: ffffc900001e0860 R08: ffffffff90af3337 R09: 1ffffffff215e666
R10: dffffc0000000000 R11: fffffbfff215e667 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+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:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:234
Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> 0f 1f 80 00 00 00 00 48 8b 04 24 65 48 8b 15 64 fc 7f 7e 65 8b
RSP: 0018:ffffc9000ce576d8 EFLAGS: 00000283
RAX: ffffffff813a0c5d RBX: ffff88807ddda000 RCX: 0000000000080000
RDX: ffffc9000ca09000 RSI: 0000000000003912 RDI: 0000000000003913
RBP: ffff88805e1b93c0 R08: ffff88805e1b9280 R09: 00000000800c0009
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: ffff888017442140
R13: dffffc0000000000 R14: ffffffff81d3698b R15: ffff888017442140
 __phys_addr+0xd/0x170 arch/x86/mm/physaddr.c:16
 virt_to_folio include/linux/mm.h:913 [inline]
 virt_to_slab mm/slab.h:175 [inline]
 ___cache_free+0x16/0x150 mm/slub.c:3694
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:306
 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+0x140/0x260 mm/slub.c:3398
 kmalloc_node_trace+0x22/0xe0 mm/slab_common.c:1039
 kmalloc_node include/linux/slab.h:585 [inline]
 kzalloc_node include/linux/slab.h:710 [inline]
 __get_vm_area_node+0x122/0x330 mm/vmalloc.c:2506
 __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: 0033:0x7f0c0b59aeb9
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:00007f0c0c42d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f0c0b815fa0 RCX: 00007f0c0b59aeb9
RDX: 0000000000000042 RSI: 00002000000006c0 RDI: 0000000000000005
RBP: 00007f0c0b608c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0c0b816038 R14: 00007f0c0b815fa0 R15: 00007fff545e41d8
 </TASK>