rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10502 ticks this GP) idle=514c/1/0x4000000000000000 softirq=17253/17257 fqs=3462
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   987661          0            0
rcu: 	cputime:    24134      28344           93   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=9277 q=2156 ncpus=2)
CPU: 0 UID: 0 PID: 6576 Comm: syz.1.302 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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 9b 93 56 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 c1 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900000079c0 EFLAGS: 00000206
RAX: 4eb6c14bd0513700 RBX: 0000000000000a02 RCX: 4eb6c14bd0513700
RDX: 0000000000000002 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90000007a40 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff888027fcdcb0 R14: ffffffff99d3d910 R15: 1ffff92000000f38
FS:  00007fc81b0dd6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30a1fffc CR3: 0000000027f46000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 debug_object_assert_init+0x20e/0x380
 __mod_timer+0x4a/0xf30
 mrp_join_timer+0x13f/0x170
 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:ffffc90006ba7000 EFLAGS: 00000286
RAX: 4eb6c14bd0513700 RBX: 0000000000000000 RCX: 4eb6c14bd0513700
RDX: 0000000000000007 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90006ba70b0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000d74e00
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:put_cpu_partial+0x1b4/0x250
Code: 85 b5 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 be 6c 58 09 cc e8 38 92 55 09 f7 c5 00 02 00 00 74 bc fb 4d 85 e4 <75> bb eb c4 90 e8 c2 04 a5 02 85 c0 74 22 83 3d 2b 23 89 0d 00 75
RSP: 0018:ffffc90006ba7170 EFLAGS: 00000246
RAX: 4eb6c14bd0513700 RBX: ffff88801b68f640 RCX: 4eb6c14bd0513700
RDX: 0000000000000007 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: 0000000000000282 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: ffff88801ee79cc0 R15: ffff88804b040960
 __slab_free+0x2f7/0x400
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 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: 0033:0x7fc81a18eb69
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:00007fc81b0dcfe8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fc81a3b5fa0 RCX: 00007fc81a18eb69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000084005080
RBP: 00007fc81a211df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc81a3b5fa0 R15: 00007fff2d133868
 </TASK>
