rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5097/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=18185, q=338 ncpus=2)
task:syz-executor.5  state:R  running task     stack:19512 pid:5097  tgid:5097  ppid:5080   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:7008
 irqentry_exit+0x5a/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x25a/0x530 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 54 58 7d 00 f6 44 24 61 02 0f 85 8a 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900044a75e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000894ec8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8b6ab6e0 RDI: ffffffff8bbde0a0
RBP: ffffc900044a7728 R08: ffffffff90dd7367 R09: 1ffffffff21bae6c
R10: dffffc0000000000 R11: fffffbfff21bae6d R12: 1ffff92000894ec4
R13: dffffc0000000000 R14: ffffc900044a7640 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 rcu_read_lock include/linux/rcupdate.h:747 [inline]
 prepend_path+0x50/0xbe0 fs/d_path.c:164
 d_absolute_path+0x179/0x300 fs/d_path.c:234
 tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
 tomoyo_realpath_from_path+0x2ae/0x5e0 security/tomoyo/realpath.c:271
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x2b7/0x730 security/tomoyo/file.c:822
 security_inode_getattr+0xd3/0x120 security/security.c:2153
 vfs_getattr+0x46/0x430 fs/stat.c:173
 vfs_statx+0x198/0x4c0 fs/stat.c:248
 vfs_fstatat+0x135/0x190 fs/stat.c:299
 __do_sys_newfstatat fs/stat.c:463 [inline]
 __se_sys_newfstatat fs/stat.c:457 [inline]
 __x64_sys_newfstatat+0x117/0x190 fs/stat.c:457
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7febfa47b78a
RSP: 002b:00007fff33d06f38 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007febfa47b78a
RDX: 00007fff33d06f60 RSI: 00007fff33d06ff0 RDI: 00000000ffffff9c
RBP: 00007fff33d06ff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007fff33d080b0
R13: 00007febfa4c83b9 R14: 0000000000062885 R15: 0000000000000003
 </TASK>
rcu: rcu_preempt kthread starved for 10543 jiffies! g18185 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:23768 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x30a/0x1500 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1830
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 7351 Comm: syz-executor.0 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 8a 1d 4b f6 48 89 df e8 82 58 4c f6 e8 fd 21 73 f6 fb bf 01 00 00 00 <e8> a2 7d 3e f6 65 8b 05 53 8b e1 74 85 c0 74 02 5b c3 e8 20 59 de
RSP: 0018:ffffc90016137c50 EFLAGS: 00000282
RAX: 556175943f6d8600 RBX: ffff88807d4f9bc0 RCX: ffffffff925cf303
RDX: dffffc0000000000 RSI: ffffffff8b6aa560 RDI: 0000000000000001
RBP: ffffc90016137d90 R08: ffffffff8f00c0ef R09: 1ffffffff1e0181d
R10: dffffc0000000000 R11: fffffbfff1e0181e R12: 1ffff1100fa9f40b
R13: 000000001c000004 R14: 0000000000000021 R15: ffff88807d4fa058
FS:  00005555567ea480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 000000002905d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1569/0x1840 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296
 do_syscall_64+0x52/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f056767cce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd02aa8a08 EFLAGS: 00000246
RAX: ffffffffffffff92 RBX: 00000000000629ab RCX: 00007f056767cce9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f056779c12c
RBP: 0000000000000032 R08: 00007f056779c12c R09: 00007f056779c12c
R10: 00007ffd02aa8b40 R11: 0000000000000246 R12: 00007f056779c12c
R13: 00000000000629dd R14: 00007ffd02aa8b60 R15: 00007ffd02aa8b40
 </TASK>