rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=52a4/1/0x4000000000000000 softirq=26671/26671 fqs=4461
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1189014          0            0
rcu: 	cputime:    30624      21855           76   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=20461 q=6554 ncpus=2)
CPU: 0 UID: 0 PID: 8403 Comm: syz.0.673 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #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:kmem_cache_alloc_node_noprof+0x1e3/0x3c0
Code: 0a 00 48 89 c3 48 89 44 24 18 48 85 c0 0f 94 c0 40 80 f5 01 40 08 c5 75 0d 44 89 e2 48 89 df 31 f6 e8 61 7c 5f 09 8b 6c 24 0c <66> 90 41 f7 c6 00 00 40 00 0f 85 b4 00 00 00 41 f6 47 09 80 0f 85
RSP: 0018:ffffc90000007a68 EFLAGS: 00000246
RAX: ffff88804560aa00 RBX: ffff88804560aa00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88804560acc0
RBP: 00000000ffffffff R08: 00000000c6365937 R09: 0000000000000000
R10: ffff88804560aa00 R11: ffffffff81ac34b0 R12: 00000000000002c0
R13: ffff88804560aa00 R14: 0000000000082820 R15: ffff88801ceadc80
FS:  00007f4a4d33f6c0(0000) GS:ffff8880b862a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560148ca39e0 CR3: 000000001ab3c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 wg_packet_send_keepalive+0x65/0x2c0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 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 6f e1 e8 09 e8 1a 28 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:ffffc900067d6f98 EFLAGS: 00000282
RAX: 6d0f97963ffa7a00 RBX: 0000000000000000 RCX: 6d0f97963ffa7a00
RDX: 0000000000000006 RSI: ffffffff8d9b1618 RDI: ffffffff8be2fd00
RBP: ffffc900067d6ff0 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: ffff8880230b5640
R13: dffffc0000000000 R14: ffff888022110000 R15: ffff88804b03ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_notrace+0xd1/0x110
 preempt_schedule_notrace_thunk+0x16/0x30
 lock_release+0x3ca/0x3e0
 kmem_cache_alloc_node_noprof+0x4e/0x3c0
 __alloc_skb+0x112/0x2d0
 _sctp_make_chunk+0x5e/0x430
 sctp_make_datafrag_empty+0x122/0x230
 sctp_datamsg_from_user+0x729/0xef0
 sctp_sendmsg_to_asoc+0x1003/0x1810
 sctp_sendmsg+0x1941/0x2810
 __sock_sendmsg+0x19c/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: 0033:0x7f4a4c58eb69
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:00007f4a4d33f038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4a4c7b5fa0 RCX: 00007f4a4c58eb69
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f4a4c611df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4a4c7b5fa0 R15: 00007ffff968d7d8
 </TASK>
