rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=6444/1/0x4000000000000000 softirq=13255/13255 fqs=0
rcu: 	(t=10500 jiffies g=6685 q=2848 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g6685 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=2880
rcu: rcu_preempt kthread starved for 10500 jiffies! g6685 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26704 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: 6019 Comm: syz.1.59 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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 92 37 f8 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:ffffc900001e0640 EFLAGS: 00000206
RAX: 7d6855ae0671c600 RBX: 1ffff9200003c0d0 RCX: 7d6855ae0671c600
RDX: 0000000000000003 RSI: ffffffff8d9986f9 RDI: ffffffff8be29f80
RBP: ffffc900001e0740 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007fe16af3b6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc9a0cfe40 CR3: 000000002fc7e000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 netif_receive_skb_list_internal+0xa4f/0xcc0
 napi_complete_done+0x2f2/0x7c0
 e1000_clean+0xd0b/0x2b00
 __napi_poll+0xc7/0x480
 net_rx_action+0x707/0xe30
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 common_interrupt+0xbb/0xe0
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40
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 5b 22 21 f6 e8 96 f5 57 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:ffffc9000653f740 EFLAGS: 00000286
RAX: 7d6855ae0671c600 RBX: 0000000000000000 RCX: 7d6855ae0671c600
RDX: 0000000000000007 RSI: ffffffff8d9986f9 RDI: 0000000000000001
RBP: ffffc9000653f7e0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000ca7ee8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__slab_free+0x1ee/0x400
Code: 89 de 0f 85 c2 01 00 00 49 89 c4 4c 8b 16 41 c1 ea 09 41 83 e2 01 4d 89 f9 4c 89 f7 44 8b 44 24 08 4c 89 e8 48 21 f8 44 89 e9 <81> e1 00 00 ff ff 44 09 c1 41 89 cf 49 09 c7 48 8b 04 24 f6 40 0a
RSP: 0018:ffffc9000653f8a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000653f958 RCX: 00000000800c000c
RDX: ffff8880260c0a00 RSI: ffffea0000983000 RDI: ffffffff00000000
RBP: 0000000000000000 R08: 000000000000000b R09: 0000000000000000
R10: 0000000000000000 R11: ffffed1026cc7fa9 R12: 0000000000000000
R13: 00000000800c000c R14: 0000000000000000 R15: ffff8880260c0a00
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_noprof+0x224/0x4f0
 security_task_alloc+0x4d/0x360
 copy_process+0x14f8/0x3b80
 kernel_clone+0x21e/0x870
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe16a18e9a9
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:00007fe16af3afe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe16a3b5fa0 RCX: 00007fe16a18e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000008010e000
RBP: 00007fe16a210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe16a3b5fa0 R15: 00007ffcff6951b8
 </TASK>
sched: DL replenish lagged too much
