rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=f7d4/1/0x4000000000000000 softirq=92563/92564 fqs=5205
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     8458          0            0
rcu: 	cputime:      236      52243            6   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=80781 q=2971 ncpus=2)
CPU: 1 UID: 0 PID: 17865 Comm: syz.4.3076 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:217
Code: 5b e9 13 d2 5a 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 f0 76 92 <65> 8b 15 b8 a5 b5 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75
RSP: 0018:ffffc90000a08b38 EFLAGS: 00000202
RAX: ffffffff8961fe40 RBX: 0000000000000000 RCX: ffff88802c00db80
RDX: 0000000000000100 RSI: 0000000000000010 RDI: 0000000000000008
RBP: 1ffff1100a39d86a R08: ffffffff89615756 R09: ffffffff8df41cc0
R10: 0000000000000001 R11: ffffffff89549fc0 R12: dffffc0000000000
R13: ffff888051cec354 R14: 0000000000000010 R15: 0000000000000002
FS:  00007ff719e986c0(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f759edf5f98 CR3: 0000000073d82000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 taprio_dequeue_tc_priority+0x2d0/0x750 net/sched/sch_taprio.c:803
 taprio_dequeue+0x186/0x550 net/sched/sch_taprio.c:-1
 dequeue_skb net/sched/sch_generic.c:297 [inline]
 qdisc_restart net/sched/sch_generic.c:402 [inline]
 __qdisc_run+0x23f/0x1510 net/sched/sch_generic.c:420
 qdisc_run+0xc7/0x300 include/net/pkt_sched.h:120
 net_tx_action+0x7ac/0x9f0 net/core/dev.c:5781
 handle_softirqs+0x27d/0x850 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x1315/0x2390 arch/x86/kernel/unwind_orc.c:494
Code: 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 <4c> 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49 8d 47 fc 48 0f 47 d8
RSP: 0018:ffffc900035a7198 EFLAGS: 00000246
RAX: fffffffff16e035c RBX: ffffffff8f91feb4 RCX: dffffc0000000000
RDX: ffffffff8f91fe30 RSI: ffffffff9009d3ee RDI: ffffffff8bbfc600
RBP: ffffffff8f91fe30 R08: 0000000000000022 R09: ffffffff8df41cc0
R10: ffffc900035a72b8 R11: ffffffff81ad4ad0 R12: ffffffff8100012f
R13: ffffffff8f91fe30 R14: ffffc900035a7268 R15: ffffffff8f91fe70
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x8d/0x4c0 mm/page_owner.c:332
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x234/0x290 mm/page_alloc.c:1845
 prep_new_page mm/page_alloc.c:1853 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3879
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 ___alloc_pages_bulk mm/kasan/shadow.c:345 [inline]
 __kasan_populate_vmalloc mm/kasan/shadow.c:370 [inline]
 kasan_populate_vmalloc+0xd1/0x270 mm/kasan/shadow.c:435
 alloc_vmap_area+0xd4e/0x1470 mm/vmalloc.c:2098
 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3193
 get_vm_area+0x80/0xb0 mm/vmalloc.c:3235
 arena_map_alloc+0x256/0x520 kernel/bpf/arena.c:125
 map_create+0xafd/0x16a0 kernel/bpf/syscall.c:1514
 __sys_bpf+0x5f0/0x860 kernel/bpf/syscall.c:6146
 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6272 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff718f8f749
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:00007ff719e98038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff7191e5fa0 RCX: 00007ff718f8f749
RDX: 0000000000000048 RSI: 0000200000003940 RDI: 0000000000000000
RBP: 00007ff719013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff7191e6038 R14: 00007ff7191e5fa0 R15: 00007ffe4132a188
 </TASK>
sched: DL replenish lagged too much