rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
 P4543/2:b..l

rcu: 	(detected by 0, t=10502 jiffies, g=41409, q=691 ncpus=2)
task:udevd           state:R
  running task     stack:21952 pid:4543  tgid:4543  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:copy_from_kernel_nofault_allowed+0x58/0x130 arch/x86/mm/maccess.c:33
Code: 9e 53 00 4d 85 f6 74 7b 48 81 fb 00 00 60 ff 74 72 48 c7 c0 a0 33 ad 8f 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 6f 0f b6 1d bd a6 6a 0e 31 ff 89 de e8 94 9c 53 00 85 db
RSP: 0018:ffffc9000307f6a0 EFLAGS: 00000a06

RAX: 0000000000000000 RBX: ffff88807e2e5000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffff88807e2e5000 RDI: ffffffffff600000
RBP: ffff888016af48c0 R08: ffffffff81428cb1 R09: 1ffffffff25f56b7
R10: dffffc0000000000 R11: fffffbfff25f56b8 R12: ffff88807e2e5ae0
R13: 0000000000000006 R14: 000000000001ffff R15: ffff88807e2e5ae0
 copy_from_kernel_nofault+0x28/0x2e0 mm/maccess.c:31
 prepend_copy fs/d_path.c:50 [inline]
 prepend fs/d_path.c:76 [inline]
 prepend_name fs/d_path.c:101 [inline]
 __prepend_path fs/d_path.c:133 [inline]
 prepend_path+0x51f/0xbe0 fs/d_path.c:172
 d_absolute_path+0x179/0x310 fs/d_path.c:234
 tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
 tomoyo_realpath_from_path+0x2b4/0x5e0 security/tomoyo/realpath.c:271
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
 security_inode_getattr+0xd8/0x130 security/security.c:2269
 vfs_getattr+0x45/0x430 fs/stat.c:173
 vfs_statx+0x1a5/0x4e0 fs/stat.c:248
 vfs_fstatat+0x135/0x190 fs/stat.c:304
 __do_sys_newfstatat fs/stat.c:468 [inline]
 __se_sys_newfstatat fs/stat.c:462 [inline]
 __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa04f3925f4
RSP: 002b:00007fff13db1968 EFLAGS: 00000246
 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055bb2ee2b1af RCX: 00007fa04f3925f4
RDX: 00007fff13db1978 RSI: 00007fff13db1e08 RDI: 00000000ffffff9c
RBP: 00007fff13db1a08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff13db1e08
R13: 00007fff13db1978 R14: 000055bb55fb2910 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10384 jiffies! g41409 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:25584 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc2-syzkaller-00235-g8a92980606e3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d5 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 25 c5 a2 00 f3 0f 1e fa fb f4 <fa> c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246

RAX: ffffffff8e094680 RBX: ffff8880186b4064 RCX: 0000000000110571
RDX: 0000000000000001 RSI: ffff8880186b4000 RDI: ffff8880186b4064
RBP: 000000000003a5b8 R08: ffff8880b9437d0b R09: 1ffff11017286fa1
R10: dffffc0000000000 R11: ffffffff8b86b9f0 R12: ffff888019f22000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eace280
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe61baa98e5 CR3: 000000002c54a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x375/0x5d0 kernel/sched/idle.c:332
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
 rest_init+0x2dc/0x300 init/main.c:747
 start_kernel+0x47a/0x500 init/main.c:1103
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
 common_startup_64+0x13e/0x147
 </TASK>