rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10323 ticks this GP) idle=fee4/1/0x4000000000000000 softirq=25920/26189 fqs=5229
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1224040        910            0
rcu: 	cputime:    35895      16581           39   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=16449 q=15788 ncpus=2)
CPU: 0 UID: 0 PID: 7384 Comm: syz.5.325 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410-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:get_random_u32+0x4e7/0x940
Code: e3 00 02 00 00 75 7e e8 47 86 6d fc 48 8b 5c 24 28 4d 85 ff 75 07 e8 38 86 6d fc eb 06 e8 31 86 6d fc fb 8b 84 24 00 01 00 00 <48> c7 44 24 40 0e 36 e0 45 42 c7 04 23 00 00 00 00 4a c7 44 23 0c
RSP: 0018:ffffc900000079c0 EFLAGS: 00000246
RAX: 00000000abf61754 RBX: 1ffff92000000f40 RCX: ffff88801fd71cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b40 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: dffffc0000000000
R13: 0000000000000007 R14: ffff88804b036230 R15: 0000000000000200
FS:  00007feda84246c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb5413048 CR3: 00000000417aa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000082 DR2: 0000000000000082
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __get_random_u32_below+0x14/0x90
 mrp_join_timer+0x10c/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_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_read_unlock_special+0x87/0x5e0
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 52 28 f9 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:ffffc90006787060 EFLAGS: 00000206
RAX: eda166988dc59800 RBX: 1ffff92000cf0e14 RCX: eda166988dc59800
RDX: 0000000000000006 RSI: ffffffff8d9b748e RDI: ffffffff8be33600
RBP: ffffc90006787158 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffffffff8e13f200
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__memcg_slab_post_alloc_hook+0x27e/0x7f0
Code: 80 0e 92 0b 4c 89 ff e8 80 2f 49 ff 49 89 c7 49 c1 ef 06 49 83 e7 c0 4f 8d 24 3e 49 83 c4 08 4c 89 e0 48 c1 e8 03 80 3c 28 00 <74> 08 4c 89 e7 e8 38 e8 f7 ff 49 8b 04 24 a8 01 0f 85 f5 02 00 00
RSP: 0018:ffffc90006787a40 EFLAGS: 00000246
RAX: 1ffffd400088cde1 RBX: ffffc90006787b18 RCX: ffff88801fd71cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff822bf2e9
R10: 0000000000000406 R11: 0000000000000000 R12: ffffea0004466f08
R13: 0000000000000000 R14: ffffea0000000000 R15: 0000000004466f00
 kmem_cache_alloc_lru_noprof+0x2c7/0x3d0
 __d_alloc+0x36/0x7a0
 d_alloc_pseudo+0x21/0xc0
 alloc_file_pseudo+0xcc/0x210
 anon_inode_getfile+0xc5/0x1a0
 __se_sys_perf_event_open+0xf20/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feda758ebe9
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:00007feda8424038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007feda77b5fa0 RCX: 00007feda758ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007feda7611e19 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007feda77b6038 R14: 00007feda77b5fa0 R15: 00007fffa29f4678
 </TASK>
