rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=505/1/0x4000000000000002 softirq=27976/27978 fqs=5243 
	(detected by 1, t=10502 jiffies, g=37353, q=1126)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10237 Comm: syz.5.1401 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:205
Code: 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 90 cd f1 0b 48 89 de 5b e9 47 9e 43 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d 64 a5 8a 7e 65 8b 15 65 a5 8a 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000006ff8 EFLAGS: 00000802
RAX: ffffffff819a092d RBX: ffff888075f8e578 RCX: dffffc0000000000
RDX: ffff888075f8e578 RSI: ffffc90000007340 RDI: ffffc90000007180
RBP: ffffc90000007130 R08: dffffc0000000000 R09: ffffc90000007180
R10: fffff52000000e37 R11: 1ffff92000000e30 R12: 1ffff92000000e10
R13: 0000000000000018 R14: ffffc90000007180 R15: ffffc90000007340
FS:  00007fa8719296c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8718e6f98 CR3: 00000000604de000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_output_begin_forward+0x8d/0xa30 kernel/events/ring_buffer.c:270
 __perf_event_output kernel/events/core.c:7804 [inline]
 perf_event_output_forward+0x15c/0x280 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
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 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000077a0 EFLAGS: 00000206
RAX: 75faef8923444400 RBX: 1ffff92000000ef8 RCX: 75faef8923444400
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a4c0
RBP: ffffc90000007880 R08: dffffc0000000000 R09: fffffbfff1ff7a39
R10: fffffbfff1ff7a39 R11: 1ffffffff1ff7a38 R12: ffffffff8c120b00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 ndisc_send_skb+0xdc4/0x14a0 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3956
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:984 [inline]
RIP: 0010:debug_check_no_obj_freed+0x515/0x530 lib/debugobjects.c:1003
Code: 00 00 00 00 00 fc ff df e9 59 fe ff ff 4c 8b 74 24 28 4c 8b 7c 24 20 eb 02 31 db 48 8b 7c 24 10 48 8b 74 24 08 e8 bb 67 d3 05 <3b> 1d 25 95 8a 09 0f 8e c3 fb ff ff 89 1d 19 95 8a 09 e9 b8 fb ff
RSP: 0018:ffffc9000406ee08 EFLAGS: 00000246
RAX: 75faef8923444400 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffff888066fd8000
R13: ffff888066fd0000 R14: ffff888066fd6000 R15: 0000000000000002
 free_pages_prepare mm/page_alloc.c:1345 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x237/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
 ____kasan_kmalloc mm/kasan/common.c:479 [inline]
 __kasan_krealloc+0xa7/0x1b0 mm/kasan/common.c:581
 kasan_krealloc include/linux/kasan.h:284 [inline]
 __do_krealloc mm/slab_common.c:1240 [inline]
 krealloc+0xb1/0xf0 mm/slab_common.c:1277
 push_jmp_history kernel/bpf/verifier.c:2125 [inline]
 is_state_visited kernel/bpf/verifier.c:11082 [inline]
 do_check+0x2d3d/0xeac0 kernel/bpf/verifier.c:11222
 do_check_common+0xe67/0x16c0 kernel/bpf/verifier.c:13506
 do_check_main kernel/bpf/verifier.c:13569 [inline]
 bpf_check+0x31f3/0xf090 kernel/bpf/verifier.c:14140
 bpf_prog_load+0x1043/0x1550 kernel/bpf/syscall.c:2354
 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa8736c1ec9
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:00007fa871929038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fa873918fa0 RCX: 00007fa8736c1ec9
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007fa873744f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa873919038 R14: 00007fa873918fa0 R15: 00007ffe8e1b19d8
 </TASK>