INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 0, t=10502 jiffies, g=26073, c=26072, q=4) All QSes seen, last rcu_sched kthread activity 10496 (4295078299-4295067803), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.1 R running task 27632 1033 6422 0x0000000c Call Trace: sched_show_task kernel/sched/core.c:5168 [inline] sched_show_task.cold+0x335/0x399 kernel/sched/core.c:5143 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline] check_cpu_stall kernel/rcu/tree.c:1616 [inline] __rcu_pending kernel/rcu/tree.c:3390 [inline] rcu_pending kernel/rcu/tree.c:3452 [inline] rcu_check_callbacks.cold+0xd3f/0xdaa kernel/rcu/tree.c:2792 update_process_times+0x29/0x60 kernel/time/timer.c:1590 tick_sched_handle.isra.0+0x73/0x150 kernel/time/tick-sched.c:165 tick_sched_timer+0x41/0x120 kernel/time/tick-sched.c:1223 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x24b/0xb90 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x117/0x5f0 arch/x86/kernel/apic/apic.c:1100 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:deref_stack_reg+0x59/0xc0 arch/x86/kernel/unwind_orc.c:293 RSP: 0018:ffff8880aec077d8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000001 RBX: 1ffff11015d80efb RCX: 1ffff11015d80f20 RDX: ffff888029bb7ed8 RSI: ffff888029bb7ed0 RDI: ffff8880aec07900 RBP: ffff888029bb7ed0 R08: 0000000000000000 R09: 0000000000000001 R10: ffff888029bb7f00 R11: 0000000000056071 R12: ffff8880aec07930 R13: dffffc0000000000 R14: ffff8880aec07940 R15: ffff8880aec078f0 unwind_next_frame+0xfb0/0x1700 arch/x86/kernel/unwind_orc.c:478 __save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc.part.0+0x4f/0xd0 mm/kasan/kasan.c:551 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x111/0x3c0 mm/slab.c:3550 skb_clone+0x126/0x320 net/core/skbuff.c:1282 frame_get_tagged_skb net/hsr/hsr_forward.c:195 [inline] hsr_forward_do net/hsr/hsr_forward.c:283 [inline] hsr_forward_skb+0xf14/0x1898 net/hsr/hsr_forward.c:373 send_hsr_supervision_frame+0x8e3/0xf00 net/hsr/hsr_device.c:321 hsr_announce+0xf0/0x330 net/hsr/hsr_device.c:350 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279 expire_timers+0x233/0x4d0 kernel/time/timer.c:1318 __run_timers kernel/time/timer.c:1636 [inline] run_timer_softirq+0x1d8/0x5b0 kernel/time/timer.c:1649 __do_softirq+0x254/0x9bf kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5f0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:preempt_latency_start kernel/sched/core.c:3087 [inline] RIP: 0010:preempt_schedule_common+0x92/0xc0 kernel/sched/core.c:3507 RSP: 0018:ffff888029bb7560 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 1ffff110108c5b0f RBX: ffffed10108c58c8 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff888029bb75a0 RDI: ffff88808462d878 RBP: ffff88808462c640 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888029bb7d98 R11: 0000000000056071 R12: dffffc0000000000 R13: ffff88808462c640 R14: ffffffff81003d87 R15: ffff888029bb7698 ___preempt_schedule+0x16/0x18 unwind_next_frame+0xe51/0x1700 arch/x86/kernel/unwind_orc.c:502 __save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc.part.0+0x4f/0xd0 mm/kasan/kasan.c:551 kmem_cache_alloc_trace+0x14d/0x3f0 mm/slab.c:3618 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] push_stack+0x73/0x270 kernel/bpf/verifier.c:552 check_cond_jmp_op kernel/bpf/verifier.c:3294 [inline] do_check+0x43d1/0x9420 kernel/bpf/verifier.c:4360 bpf_check+0xaf3/0x1830 kernel/bpf/verifier.c:5047 bpf_prog_load+0x5e9/0xe00 kernel/bpf/syscall.c:1057 SYSC_bpf kernel/bpf/syscall.c:1512 [inline] SyS_bpf+0x12b2/0x34e0 kernel/bpf/syscall.c:1477 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cb29 RSP: 002b:00007f78df730c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004db260 RCX: 000000000045cb29 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000070 R14: 00000000004c3450 R15: 00007f78df7316d4