rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10497 ticks this GP) idle=7a14/1/0x4000000000000000 softirq=21628/21686 fqs=4738
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1004858        234            0
rcu: 	cputime:    24449      28019           95   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=12093 q=3752 ncpus=2)
CPU: 0 UID: 0 PID: 7003 Comm: syz.5.393 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_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1a 2a 2d f6 48 89 df e8 72 c1 2d f6 e8 dd 92 56 f6 fb bf 01 00 00 00 <e8> 42 c1 1f f6 65 8b 05 1b f9 2e 07 85 c0 74 07 5b e9 81 4c 00 00
RSP: 0018:ffffc90000007c90 EFLAGS: 00000286
RAX: 65172790edaefb00 RBX: ffff88804b025940 RCX: 65172790edaefb00
RDX: 0000000000000003 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90000007e10 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff88804b025940
R13: 1ffff92000000fac R14: ffffffff99e466c0 R15: ffffc90000007d60
FS:  00007fc97c2c86c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3648f5 CR3: 0000000044408000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000082 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __run_timer_base+0x60a/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: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 3f 25 df 09 e8 ba b9 35 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:ffffc9000662f258 EFLAGS: 00000282
RAX: 65172790edaefb00 RBX: 0000000000000000 RCX: 65172790edaefb00
RDX: 0000000000000007 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: ffffc9000662f2b0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff8881086cd640
R13: dffffc0000000000 R14: ffff88801ed71cc0 R15: ffff88804b03ab98
 __schedule+0x16fd/0x4d00
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__memcg_slab_post_alloc_hook+0x243/0x7f0
Code: f0 48 c1 e8 03 48 89 44 24 78 80 3c 28 00 74 08 4c 89 f7 e8 5f f7 f7 ff 4c 89 74 24 38 4e 8b 3c eb 48 8b 44 24 28 80 3c 28 00 <74> 0c 48 c7 c7 38 64 bb 8d e8 3f f7 f7 ff 4c 8b 35 10 1a 90 0b 4c
RSP: 0018:ffffc9000662f648 EFLAGS: 00000246
RAX: 1ffffffff1b76c87 RBX: ffffc9000662f720 RCX: 1ffff110036d1ef3
RDX: 0000000000000002 RSI: ffffffff8db863e2 RDI: ffff8881086cd640
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff822be719
R10: 0000000000000406 R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc9000662f720 R15: ffff88802a99c5e0
 kmem_cache_alloc_lru_noprof+0x2c7/0x3d0
 __d_alloc+0x31/0x6f0
 d_alloc_parallel+0xe0/0x14e0
 path_openat+0xa3b/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc97b38d4d0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007fc97c2c7f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc97b38d4d0
RDX: 0000000000000002 RSI: 00007fc97c2c7fa0 RDI: 00000000ffffff9c
RBP: 00007fc97c2c7fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc97b5b5fa0 R15: 00007ffec396b568
 </TASK>
