sched: DL replenish lagged too much
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=6873, q=187 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294953478-4294942976), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g6873 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27192 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1737/0x4d30
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5918 Comm: syz.2.11 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:native_apic_msr_eoi+0xf/0x20
Code: f8 c3 cc cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 0b 08 00 00 31 c0 31 d2 0f 30 <e9> 4c 3e 01 0a cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc900001e0ba0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc900001e0be8 RCX: 000000000000080b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffff888136623b0f R09: 1ffff11026cc4761
R10: dffffc0000000000 R11: ffffed1026cc4762 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f04602966c0(0000) GS:ffff8881a3c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3b4e7c CR3: 0000000025eee000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __sysvec_apic_timer_interrupt+0x45/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 6a 20 2b f6 48 89 df e8 c2 b7 2b f6 e8 ad dc 54 f6 fb bf 01 00 00 00 <e8> 72 b5 1d f6 65 8b 05 6b 9f 27 07 85 c0 74 07 5b e9 51 4c 00 00
RSP: 0018:ffffc900001e0c90 EFLAGS: 00000286
RAX: a626c86cd5869b00 RBX: ffff888136624840 RCX: a626c86cd5869b00
RDX: 0000000000000002 RSI: ffffffff8d9792dd RDI: 0000000000000001
RBP: ffffc900001e0e10 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: dffffc0000000000
R13: ffff888136624888 R14: ffff888136624890 R15: 0000000000000000
 __run_timer_base+0x1ad/0x860
 run_timer_softirq+0x67/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
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:ffffc9000431eb60 EFLAGS: 00000206
RAX: a626c86cd5869b00 RBX: 1ffff92000863d74 RCX: a626c86cd5869b00
RDX: 0000000000000006 RSI: ffffffff8d9792dd RDI: ffffffff8be30a00
RBP: ffffc9000431ec58 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffffffff8e141800
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 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
 va_alloc+0xc8c/0xef0
 alloc_vmap_area+0x963/0x1490
 __get_vm_area_node+0x1f8/0x300
 __vmalloc_node_range_noprof+0x301/0x12f0
 vzalloc_noprof+0xb2/0xf0
 bpf_check+0x1a5/0x1d2d0
 bpf_prog_load+0x1318/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f045f38ebe9
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:00007f0460296038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f045f5b6090 RCX: 00007f045f38ebe9
RDX: 0000000000000094 RSI: 00002000000049c0 RDI: 0000000000000005
RBP: 00007f045f411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f045f5b6128 R14: 00007f045f5b6090 R15: 00007ffd41cb35d8
 </TASK>
