rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (8 ticks this GP) idle=39f/1/0x4000000000000002 softirq=100668/100668 fqs=2336 
	(detected by 1, t=10504 jiffies, g=145933, q=1627)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1831 Comm: syz.8.9095 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:preempt_count_sub+0xe0/0x160 kernel/sched/core.c:5536
Code: e8 03 0f b6 04 18 84 c0 75 70 83 3d e1 ab 37 0c 00 75 98 48 c7 c7 a0 b0 2a 8a 48 c7 c6 80 b1 2a 8a e8 64 c6 5e 08 0f 0b eb 81 <48> c7 c1 80 8f 2d 96 80 e1 07 80 c1 03 38 c1 0f 8c 2e ff ff ff 89
RSP: 0018:ffffc90000006b48 EFLAGS: 00000002
RAX: 0000000000000004 RBX: dffffc0000000000 RCX: ffffc90000007878
RDX: ffffc90000006c01 RSI: ffffc90000007860 RDI: 0000000000000001
RBP: ffffc90000006cc8 R08: ffffc90000006cdf R09: ffffc90000006cd0
R10: dffffc0000000000 R11: fffff52000000d9c R12: ffffc90000000000
R13: dffffc0000000000 R14: ffffc90000006c90 R15: ffffc90000007870
FS:  00007fd4131476c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000005200000008b CR3: 0000000065e04000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x1296/0x1d90 arch/x86/kernel/unwind_orc.c:616
 perf_callchain_kernel+0x449/0x720 arch/x86/events/core.c:2783
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7606 [inline]
 perf_prepare_sample+0x352/0x1cd0 kernel/events/core.c:7633
 __perf_event_output kernel/events/core.c:7802 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2aa/0x360 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+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
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 e2 f0 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007580 EFLAGS: 00000206
RAX: f7de412a08b36600 RBX: 1ffff92000000eb4 RCX: f7de412a08b36600
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f740
RBP: ffffc90000007660 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 is_bpf_text_address+0x24f/0x270 kernel/bpf/core.c:727
 kernel_text_address kernel/extable.c:151 [inline]
 __kernel_text_address+0x9a/0x100 kernel/extable.c:105
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kmem_cache_free+0x8f/0x210 mm/slub.c:3520
 dst_destroy+0x20e/0x2e0 net/core/dst.c:120
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x9d2/0x1670 kernel/rcu/tree.c:2763
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:memory_is_nonzero mm/kasan/generic.c:101 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x5e/0x290 mm/kasan/generic.c:189
Code: bc 01 00 00 00 00 fc ff df 49 89 fe 49 c1 ee 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 16 4c 8d 44 3e ff 4d 89 c1 49 c1 e9 03 <4b> 8d 1c 21 49 89 df 4d 29 df 49 83 ff 10 7f 29 4d 85 ff 0f 84 38
RSP: 0018:ffffc9000348f610 EFLAGS: 00000a07
RAX: 0000000000000001 RBX: 0000000000000010 RCX: ffffffff89c41836
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc9000348f7c0
RBP: 0000000000000000 R08: ffffc9000348f7cf R09: 1ffff92000691ef9
R10: dffffc0000000000 R11: fffff52000691ef8 R12: dffffc0000000001
R13: dffffc0000000000 R14: 1ffff92000691ef8 R15: dffffc0000000000
 memset+0x1e/0x40 mm/kasan/shadow.c:44
 __schedule+0xb6/0x43c0 kernel/sched/core.c:6278
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6571
 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6596
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __kunmap_atomic include/linux/highmem-internal.h:220 [inline]
 clear_highpage include/linux/highmem.h:182 [inline]
 kernel_init_free_pages+0xb1/0xf0 mm/page_alloc.c:1278
 post_alloc_hook+0x106/0x220 mm/page_alloc.c:2416
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1bbd/0x1ca0 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5487
 __alloc_pages_node include/linux/gfp.h:570 [inline]
 alloc_pages_node include/linux/gfp.h:584 [inline]
 bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:99 [inline]
 bpf_ringbuf_alloc+0x25d/0x510 kernel/bpf/ringbuf.c:136
 ringbuf_map_alloc+0x1d1/0x300 kernel/bpf/ringbuf.c:176
 find_and_alloc_map kernel/bpf/syscall.c:129 [inline]
 map_create+0x485/0x2350 kernel/bpf/syscall.c:881
 __sys_bpf+0x30a/0x6f0 kernel/bpf/syscall.c:4639
 __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: 0033:0x7fd414f0ceb9
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:00007fd413147028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd415188090 RCX: 00007fd414f0ceb9
RDX: 0000000000000050 RSI: 00002000000006c0 RDI: 0000000000000000
RBP: 00007fd414f7ac1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd415188128 R14: 00007fd415188090 R15: 00007ffe62517348
 </TASK>