rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (8500 ticks this GP) idle=1aac/1/0x4000000000000000 softirq=15946/15948 fqs=4985
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   989663         12            0
rcu: 	cputime:    37368      15121           50   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=9341 q=3756 ncpus=2)
CPU: 0 UID: 0 PID: 6483 Comm: syz.0.151 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_acquire+0x16c/0x340
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 d4 38 e0 10 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90000007128 EFLAGS: 00000206
RAX: 729424e528d03100 RBX: 0000000000000000 RCX: 729424e528d03100
RDX: 00000000a42637f2 RSI: ffffffff8d97916f RDI: ffffffff8bc082e0
RBP: ffffffff81d0ef66 R08: ffffffff81d0ef66 R09: ffffffff8df41a20
R10: ffffc90000007310 R11: fffff52000000e64 R12: 0000000000000002
R13: ffffffff8df41a20 R14: 0000000000000000 R15: 0000000000000246
FS:  00007f756e7906c0(0000) GS:ffff88818e835000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f756e78ffc8 CR3: 0000000112cea000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 is_bpf_text_address+0x47/0x2b0
 kernel_text_address+0xa5/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 perf_callchain_kernel+0x2b8/0x600
 get_perf_callchain+0x23c/0x820
 bpf_get_stackid+0x113/0x1e0
 bpf_get_stackid_raw_tp+0x196/0x210
 bpf_prog_53f0063d4d7f65ce+0x2a/0x32
 bpf_trace_run3+0x298/0x4f0
 __traceiter_kmem_cache_free+0x38/0x60
 kmem_cache_free+0x5ae/0x620
 skb_release_data+0x62d/0x7c0
 sk_skb_reason_drop+0x127/0x170
 __netif_receive_skb_core+0x2a6e/0x2f90
 __netif_receive_skb+0x72/0x380
 process_backlog+0x622/0x1500
 __napi_poll+0xae/0x320
 net_rx_action+0x672/0xe50
 handle_softirqs+0x27d/0x850
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 ab 16 34 f6 e8 46 94 6c f6 fb bf 01 00 00 00 <e8> 1b a8 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900044e7900 EFLAGS: 00000286
RAX: 729424e528d03100 RBX: 0000000000000000 RCX: 729424e528d03100
RDX: 0000000000000007 RSI: ffffffff8d792409 RDI: 0000000000000001
RBP: ffffc900044e79b0 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee
R10: dffffc0000000000 R11: fffffbfff1f043ef R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200089cf20
 irqentry_exit+0x5d8/0x660
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x16c/0x340
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 d4 38 e0 10 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900044e7ac0 EFLAGS: 00000206
RAX: 729424e528d03100 RBX: 0000000000000000 RCX: 729424e528d03100
RDX: 00000000b01be600 RSI: ffffffff8d97916f RDI: ffffffff8bc082e0
RBP: ffffffff81f373c2 R08: ffffffff81f373c2 R09: ffffffff998f3298
R10: dffffc0000000000 R11: ffffed1034d8d5c3 R12: 0000000000000002
R13: ffffffff998f3298 R14: 0000000000000001 R15: 0000000000000246
 perf_event_alloc+0x1086/0x2d50
 __se_sys_perf_event_open+0x756/0x1d90
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f756d98f7c9
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:00007f756e790038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f756dbe6090 RCX: 00007f756d98f7c9
RDX: ffefffffffffffff RSI: 0000000000000000 RDI: 0000200000000700
RBP: 00007f756d9f297f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f756dbe6128 R14: 00007f756dbe6090 R15: 00007ffdc5f3eae8
 </TASK>
sched: DL replenish lagged too much
