rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (9789 ticks this GP) idle=471/1/0x4000000000000000 softirq=10515/10515 fqs=4647
(t=10500 jiffies g=13857 q=4777)
NMI backtrace for cpu 0
CPU: 0 PID: 5279 Comm: syz.3.124 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_dump_cpu_stacks+0x22f/0x380 kernel/rcu/tree_stall.h:349
print_cpu_stall+0x31d/0x5f0 kernel/rcu/tree_stall.h:633
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3936 [inline]
rcu_sched_clock_irq+0x6d8/0x1110 kernel/rcu/tree.c:2619
update_process_times+0x193/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4fe/0xc40 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:seqcount_lockdep_reader_access+0x17b/0x1c0 include/linux/seqlock.h:106
Code: 00 4d 85 e4 75 16 e8 54 cc 0f 00 eb 15 e8 4d cc 0f 00 e8 88 30 41 08 4d 85 e4 74 ea e8 3e cc 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc90000007980 EFLAGS: 00000246
RAX: ffffffff8167fe12 RBX: 0000000000000000 RCX: ffff888073679dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a38 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff92000000f30 R15: dffffc0000000000
ktime_get_with_offset+0x90/0x320 kernel/time/timekeeping.c:872
ktime_get_real include/linux/timekeeping.h:79 [inline]
__net_timestamp include/linux/skbuff.h:3970 [inline]
netif_receive_skb_list_internal+0x30c/0xb90 net/core/dev.c:5737
netif_receive_skb_list+0x50/0x3e0 net/core/dev.c:5811
ieee80211_rx_napi+0x324/0x360 net/mac80211/rx.c:5013
ieee80211_rx include/net/mac80211.h:4573 [inline]
ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:237
tasklet_action_common+0x298/0x400 kernel/softirq.c:806
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_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:preempt_schedule_irq+0xac/0x150 kernel/sched/core.c:6799
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 70 bf 01 00 00 00 e8 0f f7 9f f7 e8 ea 6e cc f7 fb bf 01 00 00 00 ef b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000306efc0 EFLAGS: 00000282
RAX: 2ce8ad61ea24e800 RBX: 0000000000000000 RCX: 2ce8ad61ea24e800
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: 0000000000000001
RBP: ffffc9000306f060 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200060ddf8
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:slab_pre_alloc_hook+0x5c/0xc0 mm/slab.h:501
Code: ae 93 9f 8b be d1 00 00 00 31 d2 e8 2e 8e 97 ff 2e 2e 2e 31 c0 4c 89 f7 89 ee e8 2f 9c ec ff 89 c1 31 c0 85 c9 74 09 5b 41 5c <41> 5e 41 5f 5d c3 4c 89 f0 66 90 f7 c5 00 00 40 00 75 0a 4c 89 f0
RSP: 0018:ffffc9000306f128 EFLAGS: 00000246
RAX: ffff8880168413c0 RBX: ffffffff818ae525 RCX: 0000000000000000
RDX: ffff888073679dc0 RSI: 0000000000000010 RDI: ffffffff8c1f1020
RBP: 0000000000100cc0 R08: dffffc0000000000 R09: fffffbfff1ad32b6
R10: fffffbfff1ad32b6 R11: 1ffffffff1ad32b5 R12: ffff8881477f1868
R13: 0000000000000010 R14: ffff8880168413c0 R15: 0000000000000001
slab_alloc_node mm/slub.c:3139 [inline]
slab_alloc mm/slub.c:3233 [inline]
__kmalloc_track_caller+0x69/0x330 mm/slub.c:4930
copy_array kernel/bpf/verifier.c:778 [inline]
copy_verifier_state+0xd1/0xc90 kernel/bpf/verifier.c:959
push_stack+0x1a5/0x510 kernel/bpf/verifier.c:1057
check_cond_jmp_op kernel/bpf/verifier.c:9362 [inline]
do_check+0xc414/0xeac0 kernel/bpf/verifier.c:11493
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: 0033:0x7fc9ec71dec9
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:00007fc9ebd8d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc9ec974fa0 RCX: 00007fc9ec71dec9
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007fc9ec7a0f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc9ec975038 R14: 00007fc9ec974fa0 R15: 00007ffe2facf288