rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
 P7314/2:b..l

rcu: 	(detected by 1, t=10502 jiffies, g=28273, q=304 ncpus=2)
task:udevd           state:R
  running task     stack:24816 pid:7314  tgid:7314  ppid:4533   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 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:seqcount_lockdep_reader_access+0x1d6/0x220 include/linux/seqlock.h:75
Code: 62 e8 2e be 7c ff 4d 85 f6 48 bb 00 00 00 00 00 fc ff df 75 07 e8 1a be 7c ff eb 06 e8 13 be 7c ff fb 48 c7 04 24 0e 36 e0 45 <4a> c7 04 23 00 00 00 00 66 42 c7 44 23 09 00 00 42 c6 44 23 0b 00
RSP: 0018:ffffc9000c34f560 EFLAGS: 00000293

RAX: ffffffff821967fd RBX: dffffc0000000000 RCX: ffff88802d21da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c34f610 R08: ffffffff821967d8 R09: 1ffffffff25ee8b7
R10: dffffc0000000000 R11: fffffbfff25ee8b8 R12: 1ffff92001869eac
R13: ffffc9000c34f580 R14: 0000000000000200 R15: 0000000000000046
 read_seqbegin include/linux/seqlock.h:772 [inline]
 read_seqbegin_or_lock include/linux/seqlock.h:1076 [inline]
 prepend_path+0x2d6/0xbe0 fs/d_path.c:171
 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_path2_perm+0x393/0xbb0 security/tomoyo/file.c:922
 tomoyo_path_rename+0x198/0x1e0 security/tomoyo/tomoyo.c:300
 security_path_rename+0x179/0x220 security/security.c:1918
 do_renameat2+0x94a/0x13f0 fs/namei.c:5031
 __do_sys_rename fs/namei.c:5091 [inline]
 __se_sys_rename fs/namei.c:5089 [inline]
 __x64_sys_rename+0x86/0xa0 fs/namei.c:5089
 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: 0033:0x7f423f6e893b
RSP: 002b:00007ffca5f0ccd8 EFLAGS: 00000202
 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 000055a4ea059101 RCX: 00007f423f6e893b
RDX: 000055a04305ee4c RSI: 00007ffca5f0ccf8 RDI: 00007ffca5f0d0f8
RBP: 000055a519526f10 R08: 0000000000000006 R09: dc78f6abd70b562d
R10: 000000000000010f R11: 0000000000000202 R12: 000055a51953c9c0
R13: 00007ffca5f0ccf8 R14: 00007ffca5f0d0f8 R15: 000055a4ea043ec8
 </TASK>
rcu: rcu_preempt kthread starved for 10449 jiffies! g28273 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:26128 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 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: 1 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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 c0 d4 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d e5 95 aa 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:ffffc900001a7d08 EFLAGS: 00000246

RAX: ffff888017e98000 RBX: ffff88801b6d9864 RCX: 000000000075e091
RDX: 0000000000000001 RSI: ffff88801b6d9800 RDI: ffff88801b6d9864
RBP: 000000000003a578 R08: ffff8880b9537d0b R09: 1ffff110172a6fa1
R10: dffffc0000000000 R11: ffffffff8b7e1a30 R12: ffff8880183e7000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eabc280
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88f9b62108 CR3: 0000000022f26000 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
 start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x147
 </TASK>