rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (8742 ticks this GP) idle=9434/1/0x4000000000000000 softirq=17640/17643 fqs=4943
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1207003         10            0
rcu: 	cputime:    32864      19625           46   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=11321 q=3636 ncpus=2)
CPU: 0 UID: 0 PID: 6335 Comm: syz.0.106 Not tainted 6.17.0-rc1-syzkaller-00207-g815957293639 #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:sctp_do_sm+0x3fbb/0x5a20
Code: 06 14 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 64 44 6e f7 48 c7 03 0a 00 00 00 48 89 9c 24 20 02 00 00 <45> 31 ff 45 85 ff 0f 85 0f 12 00 00 e8 04 da 0a f7 e9 df c2 ff ff
RSP: 0018:ffffc900000071c0 EFLAGS: 00000246
RAX: 369113529aac3500 RBX: ffff88803b8b1b08 RCX: 369113529aac3500
RDX: 0000000000000002 RSI: ffffffff8d9b6e87 RDI: ffffffff8be33400
RBP: ffffc900000074a0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffff8880223b6c00
R13: dffffc0000000000 R14: ffffc900000073d0 R15: 000000000000000d
FS:  00007f1b4bd826c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 00000000214ae000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 sctp_endpoint_bh_rcv+0x591/0x7e0
 sctp_rcv+0x11c1/0x1820
 ip_protocol_deliver_rcu+0x2e0/0x440
 ip_local_deliver_finish+0x3bb/0x6f0
 NF_HOOK+0x30c/0x3a0
 NF_HOOK+0x30c/0x3a0
 __netif_receive_skb+0x143/0x380
 process_backlog+0x60e/0x14f0
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 cf d7 ea 09 e8 3a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90006706bb8 EFLAGS: 00000286
RAX: 369113529aac3500 RBX: 0000000000000000 RCX: 369113529aac3500
RDX: 0000000000000007 RSI: ffffffff8d9b6e87 RDI: ffffffff8be33400
RBP: ffffc90006706c10 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffff888109fb1cc0
R13: dffffc0000000000 R14: ffff888023678000 R15: ffff88804b03ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock_irqrestore+0xfd/0x110
 rcu_preempt_deferred_qs_irqrestore+0x8bd/0xce0
 rcu_read_unlock_special+0x3a2/0x4b0
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __reset_page_owner+0x71/0x1f0
 __free_frozen_pages+0xbc4/0xd30
 __put_partials+0x156/0x1a0
 put_cpu_partial+0x17c/0x250
 __slab_free+0x2d5/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 __alloc_skb+0x112/0x2d0
 netlink_sendmsg+0x5c6/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b4af8ebe9
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:00007f1b4bd82038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1b4b1b6180 RCX: 00007f1b4af8ebe9
RDX: 0000000000040000 RSI: 0000200000000600 RDI: 0000000000000009
RBP: 00007f1b4b011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b4b1b6218 R14: 00007f1b4b1b6180 R15: 00007ffd2bc87238
 </TASK>
sched: DL replenish lagged too much
