sched: DL replenish lagged too much
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=f554/1/0x4000000000000000 softirq=15794/44501 fqs=7
rcu: 	(t=10501 jiffies g=8685 q=810 ncpus=2)
rcu: rcu_preempt kthread starved for 10485 jiffies! g8685 f0x0 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:26632 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 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>
CPU: 1 UID: 0 PID: 6256 Comm: syz.2.160 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:note_gp_changes+0x25f/0x300
Code: 1f 00 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 f6 44 24 41 02 75 4f 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <4a> c7 04 2b 00 00 00 00 66 42 c7 44 2b 09 00 00 42 c6 44 2b 0b 00
RSP: 0018:ffffc900001e0b00 EFLAGS: 00000206
RAX: 2b9a5351de4a8000 RBX: 1ffff9200003c164 RCX: 2b9a5351de4a8000
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc900001e0bd0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff88813663afd4
R13: dffffc0000000000 R14: 0000000000000a02 R15: ffff88813663afc0
FS:  00007f8a816a36c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000010e9a4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x29d/0x1710
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900042c73a0 EFLAGS: 00000286
RAX: 2b9a5351de4a8000 RBX: 0000000000000000 RCX: 2b9a5351de4a8000
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc900042c7450 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000858e74
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:clear_page_rep+0xb/0x20
Code: ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 00 02 00 00 31 c0 <f3> 48 ab c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900042c7510 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000000001a8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88811de572c0
RBP: 1ffffffff1b76c87 R08: ffffffff8fa1e8f7 R09: 0000000000000000
R10: ffffed1023bca000 R11: fffffbfff1f43d1f R12: fffa80011de57000
R13: fffa800000000000 R14: 1ffffffff1b76c85 R15: 0000000000000009
 post_alloc_hook+0x1bd/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 __alloc_pages_noprof+0xa/0x30
 ___kmalloc_large_node+0x85/0x210
 __kmalloc_large_node_noprof+0x18/0x90
 __kvmalloc_node_noprof+0x6d/0x5f0
 netlink_alloc_large_skb+0x5d/0x110
 netlink_sendmsg+0x5c6/0xb30
 __sock_sendmsg+0x21c/0x270
 sock_write_iter+0x258/0x330
 vfs_write+0x54b/0xa90
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8a8078e9a9
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:00007f8a816a3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8a809b5fa0 RCX: 00007f8a8078e9a9
RDX: 000000000000fe33 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f8a80810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8a809b5fa0 R15: 00007ffe133e0548
 </TASK>
