rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=c3a4/1/0x4000000000000000 softirq=14180/14181 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1025925          0            0
rcu: 	cputime:    24133      28356           90   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=6461 q=2633 ncpus=2)
CPU: 1 UID: 0 PID: 6071 Comm: syz.1.83 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:ffffc900001e0560 EFLAGS: 00000206
RAX: 40fea65e076d5200 RBX: 1ffff9200003c0b4 RCX: 40fea65e076d5200
RDX: 0000000000000003 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: ffffc900001e0658 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007f10f94486c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10f9426fc8 CR3: 0000000028cce000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __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+0x62/0x70
 kfree+0x18e/0x440
 ip6_dst_destroy+0x9b/0x3b0
 dst_destroy+0xd7/0x350
 rcu_core+0xca8/0x1710
 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:___slab_alloc+0x4ab/0x1480
Code: 04 24 00 02 00 00 0f 84 bb fb ff ff fb 89 dd e9 b3 fb ff ff e8 96 bf 55 09 f7 c3 00 02 00 00 0f 84 98 fe ff ff fb 8b 6c 24 08 <eb> 1a 48 8b 74 24 08 48 c7 46 10 00 00 00 00 4c 8b 6c 24 10 4c 89
RSP: 0018:ffffc9000476f900 EFLAGS: 00000206
RAX: 40fea65e076d5200 RBX: 0000000000000246 RCX: 40fea65e076d5200
RDX: 0000000000000007 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: 00000000ffffffff R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000001
R13: ffff88801a442280 R14: ffff88813663e770 R15: ffff88813663e790
 __kmalloc_noprof+0x305/0x4f0
 tomoyo_realpath_from_path+0xe3/0x5d0
 tomoyo_path_number_perm+0x1e8/0x5a0
 tomoyo_path_mkdir+0xa8/0xe0
 security_path_mkdir+0x171/0x380
 do_mkdirat+0x1bd/0x590
 __x64_sys_mkdir+0x6c/0x80
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f10f858e9a9
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:00007f10f9448038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f10f87b5fa0 RCX: 00007f10f858e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007f10f8610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f10f87b5fa0 R15: 00007fff1c6c19c8
 </TASK>
sched: DL replenish lagged too much
