rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10407 ticks this GP) idle=9da4/1/0x4000000000000000 softirq=30887/30887 fqs=4740
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1107782          0            0
rcu: 	cputime:    24907      27592           90   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=22873 q=19460 ncpus=2)
CPU: 1 UID: 0 PID: 8830 Comm: syz.4.819 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-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:_raw_write_lock+0x0/0x40
Code: 5b 41 5e e9 02 46 00 00 cc e8 cc 88 c2 f5 eb ee 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 53 48 89 fb bf 01 00 00 00 e8 fe c3 1f f6 48 8d 7b 18
RSP: 0018:ffffc900001e0ab8 EFLAGS: 00000246
RAX: 77a01a89f073b800 RBX: ffff88810757c708 RCX: 77a01a89f073b800
RDX: 0000000000000002 RSI: ffffffff8d99883e RDI: ffff88810757c568
RBP: ffffc900001e0b90 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffc900001e0b20
R13: 1ffff11020eaf8eb R14: 0000000000000000 R15: ffff88811962c000
FS:  00007f78dd1e96c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000303 CR3: 000000010eace000 CR4: 00000000000006f0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 addrconf_rs_timer+0x372/0x670
 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 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:ffffc90002deedc0 EFLAGS: 00000282
RAX: 77a01a89f073b800 RBX: 0000000000000000 RCX: 77a01a89f073b800
RDX: 0000000000000006 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc90002deee60 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005bddb8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__unwind_start+0x0/0x760
Code: ff 4c 89 ff e8 91 79 b0 00 48 be 00 00 00 00 00 fc ff df e9 30 ff ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 4c 24
RSP: 0018:ffffc90002deef20 EFLAGS: 00000246
RAX: ffff88811a731cc0 RBX: ffffc90002deefe0 RCX: ffffc90002deefb0
RDX: 0000000000000000 RSI: ffff88811a731cc0 RDI: ffffc90002deef28
RBP: ffffc90002deefb0 R08: 0000000000000004 R09: 0000000000000000
R10: ffffc90002def070 R11: fffff94000828017 R12: ffff88811a731cc0
R13: ffff88810ebec060 R14: ffffffff81ad0050 R15: 0000000000000000
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 ptlock_alloc+0x20/0x70
 pte_alloc_one+0x7d/0x170
 __pte_alloc+0x25/0x1a0
 copy_pmd_range+0x68e6/0x7000
 copy_page_range+0xc46/0x1270
 dup_mmap+0xf57/0x1ac0
 copy_mm+0x13c/0x4b0
 copy_process+0x16d3/0x3b80
 kernel_clone+0x21e/0x870
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78dc38e9a9
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:00007f78dd1e8fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f78dc5b6080 RCX: 00007f78dc38e9a9
RDX: 00002000000001c0 RSI: 00002000000000c0 RDI: 0000000002028000
RBP: 00007f78dc410d69 R08: 0000200000000440 R09: 0000200000000440
R10: 0000200000000200 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f78dc5b6080 R15: 00007ffd9e6591b8
 </TASK>
