rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=d074/1/0x4000000000000000 softirq=168665/168697 fqs=4408
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   920096          0            0
rcu: 	cputime:    29110      23378           98   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=155245 q=2164 ncpus=2)
CPU: 1 UID: 0 PID: 2835 Comm: syz.5.7687 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10-dirty #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:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 b2 e8 f2 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e05e0 EFLAGS: 00000206
RAX: 5ae51adfa3108c00 RBX: 1ffff9200003c0c4 RCX: 5ae51adfa3108c00
RDX: 0000000000000000 RSI: ffffffff8d9792dd RDI: ffffffff8be30a00
RBP: ffffc900001e06d8 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffffffff8e141800
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007fb7a45f66c0(0000) GS:ffff8881a3c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000046bb4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 __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:css_rstat_updated+0xdc/0xca0
Code: 74 08 4c 89 e7 e8 c4 53 6a 00 4c 89 f8 4d 8b 7f 08 48 89 44 24 08 4c 39 e8 74 2a 49 83 c7 38 4c 89 f8 48 c1 e8 03 80 3c 18 00 <74> 08 4c 89 ff e8 9a 53 6a 00 49 83 3f 00 0f 84 24 01 00 00 e8 9b
RSP: 0018:ffffc9000264ef20 EFLAGS: 00000246
RAX: 1ffffffff1f414f8 RBX: dffffc0000000000 RCX: ffff888021fe1cc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888118d9ce00
RBP: ffffc9000264f020 R08: 0000000000000000 R09: ffffffff822b7765
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffff888118d9ce08
R13: ffff888111cf9000 R14: 1ffff110231b39c1 R15: ffffffff8fa0a7c0
 memcg_rstat_updated+0x33/0x230
 mod_memcg_state+0x113/0x2f0
 refill_obj_stock+0x4df/0x850
 __memcg_slab_free_hook+0x127/0x3d0
 kmem_cache_free+0x223/0x400
 finish_task_switch+0x3ee/0x950
 __schedule+0x173f/0x4d30
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__rcu_read_lock+0x1c/0x60
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 65 48 8b 1c 25 08 00 9a 92 48 81 c3 44 04 00 00 48 89 d8 48 c1 e8 03 <48> b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 18 ff 03 8b 03
RSP: 0018:ffffc9000264f628 EFLAGS: 00000a03
RAX: 1ffff110043fc420 RBX: ffff888021fe2104 RCX: 5ae51adfa3108c00
RDX: dffffc0000000000 RSI: ffffffff81000130 RDI: ffffc9000264f708
RBP: dffffc0000000000 R08: ffffc9000264f7d0 R09: 000000000000000c
R10: ffffc9000264f758 R11: ffffffff81ac3450 R12: 1ffff920004c9ee1
R13: ffffc9000264f740 R14: ffffc9000264f708 R15: ffffc9000264ff58
 unwind_next_frame+0x9e/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 security_file_alloc+0x34/0x330
 init_file+0x93/0x2f0
 alloc_empty_file+0x6e/0x1d0
 alloc_file_pseudo+0x13d/0x210
 anon_inode_getfd+0xca/0x1b0
 map_create+0xf5d/0x1310
 __sys_bpf+0x60f/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7a638ebe9
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:00007fb7a45f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb7a65b5fa0 RCX: 00007fb7a638ebe9
RDX: 0000000000000048 RSI: 0000200000000340 RDI: 0000000000000000
RBP: 00007fb7a6411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7a65b6038 R14: 00007fb7a65b5fa0 R15: 00007ffce3402d58
 </TASK>
sched: DL replenish lagged too much
