rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=c92c/1/0x4000000000000000 softirq=22218/22219 fqs=4654
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   916676          1            0
rcu: 	cputime:    28073      24416          103   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=14273 q=3426 ncpus=2)
CPU: 0 UID: 0 PID: 7727 Comm: syz.0.813 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-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: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:ffffc90000007440 EFLAGS: 00000206
RAX: 3ae77301c1100200 RBX: 1ffff92000000e90 RCX: 3ae77301c1100200
RDX: 0000000000000002 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: ffffc90000007538 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007fa9764446c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f430b543fc8 CR3: 00000000279aa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 __kfence_alloc+0x2b2/0x3b0
 kmem_cache_alloc_node_noprof+0x315/0x3c0
 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_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 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:ffffc90002faf980 EFLAGS: 00000282
RAX: 3ae77301c1100200 RBX: 0000000000000000 RCX: 3ae77301c1100200
RDX: 0000000000000000 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90002fafa20 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005f5f30
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:stack_depot_save_flags+0x8f/0x900
Code: f5 75 83 fe 04 72 6f 89 e8 89 e9 4c 89 f2 03 0a 03 42 04 03 6a 08 89 ef c1 c7 04 29 e9 31 cf 01 c5 29 f8 41 89 f8 41 c1 c0 06 <41> 31 c0 01 ef 45 89 c1 41 c1 c1 08 44 29 c5 41 31 e9 41 01 f8 44
RSP: 0018:ffffc90002fafae8 EFLAGS: 00000297
RAX: 00000000f78010d4 RBX: 0000000000000000 RCX: 00000000ffffced1
RDX: ffffc90002fafb60 RSI: 000000000000000e RDI: 000000007e7560de
RBP: 000000006e0e1c92 R08: 000000009d58379f R09: ffffffff81cf0976
R10: 0000000000000007 R11: ffffffff81acf520 R12: ffffea00041a9b00
R13: 0000000000000000 R14: ffffc90002fafb60 R15: ffffc90002fafb00
 kasan_save_stack+0x4d/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kmem_cache_free+0x2f6/0x400
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa97558eb69
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:00007fa976444038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007fa9757b5fa0 RCX: 00007fa97558eb69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fa975611df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa9757b5fa0 R15: 00007ffeef530b58
 </TASK>
sched: DL replenish lagged too much
