rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10498 ticks this GP) idle=22e4/1/0x4000000000000000 softirq=86041/86074 fqs=913
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   860466          0            0
rcu: 	cputime:    27432      24969          111   ==> 52420(ms)
rcu: 	(t=10502 jiffies g=49757 q=7514 ncpus=2)
CPU: 1 UID: 0 PID: 13330 Comm: syz.2.1833 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10-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 6a 20 2b f6 48 89 df e8 c2 b7 2b f6 e8 ad dc 54 f6 fb bf 01 00 00 00 <e8> 72 b5 1d f6 65 8b 05 6b 9f 27 07 85 c0 74 07 5b e9 51 4c 00 00
RSP: 0018:ffffc900001e0a50 EFLAGS: 00000282
RAX: c4c5214bb37a9f00 RBX: ffff88813663bb88 RCX: c4c5214bb37a9f00
RDX: 0000000000000003 RSI: ffffffff8d9792dd RDI: 0000000000000001
RBP: ffffc900001e0b88 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffff88813663b9d0
R13: dffffc0000000000 R14: ffff88813663ba28 R15: ffff88813663bb70
FS:  00007f7e520586c0(0000) GS:ffff8881a3c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61135dffc8 CR3: 00000001144ae000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000090602
Call Trace:
 <IRQ>
 process_backlog+0xf4f/0x14f0
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 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: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 eb 1f 1f f6 e8 c6 48 56 f6 fb bf 01 00 00 00 <e8> eb aa ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90003537020 EFLAGS: 00000282
RAX: c4c5214bb37a9f00 RBX: 0000000000000000 RCX: c4c5214bb37a9f00
RDX: 0000000000000007 RSI: ffffffff8d9792dd RDI: 0000000000000001
RBP: ffffc900035370c0 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006a6e04
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unwind_get_return_address+0x4d/0x90
Code: c0 75 4c 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 4b 08 b0 00 48 8b 3b e8 43 bf 19 00 <85> c0 74 14 43 80 3c 37 00 74 08 48 89 df e8 30 08 b0 00 48 8b 03
RSP: 0018:ffffc90003537188 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc900035371f0 RCX: c4c5214bb37a9f00
RDX: 0000000000000001 RSI: ffffffff8db66087 RDI: ffffffff847cc3e8
RBP: ffffc90003537230 R08: ffffc90003537590 R09: 0000000000000000
R10: ffffc900035371f8 R11: fffff520006a6e41 R12: ffff888107dc3980
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006a6e3e
 arch_stack_walk+0xfc/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
 tomoyo_realpath_from_path+0x598/0x5d0
 tomoyo_check_open_permission+0x1c1/0x3b0
 security_file_open+0xb1/0x270
 do_dentry_open+0x35e/0x1970
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 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: 0033:0x7f7e5118d550
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:00007f7e52057f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e5118d550
RDX: 0000000000000000 RSI: 00007f7e52057fa0 RDI: 00000000ffffff9c
RBP: 00007f7e52057fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f7e513b6038 R14: 00007f7e513b5fa0 R15: 00007ffe077a3e78
 </TASK>
