rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6082/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=23561, q=456 ncpus=2)
task:udevd           state:R  running task     stack:25472 pid:6082  tgid:6082  ppid:4534   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline]
RIP: 0010:__follow_mount_rcu fs/namei.c:1511 [inline]
RIP: 0010:handle_mounts fs/namei.c:1536 [inline]
RIP: 0010:step_into+0x311/0x2230 fs/namei.c:1842
Code: 48 8b 75 08 4c 89 e7 e8 bd 5c 6e ff 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 c9 70 90 ff 4d 85 e4 58 0f 85 e2 0f 00 00 <e8> 8a 75 90 ff 49 8d 57 08 48 b9 00 00 00 00 00 fc ff df 48 89 d0
RSP: 0018:ffffc900033ef8f0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc900033efbd0 RCX: ffffffff81fd7cb7
RDX: ffff888019ffda00 RSI: ffffffff81fd7cc6 RDI: 0000000000000007
RBP: ffffc900033ef9f0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000200 R14: 0000000000000040 R15: ffff88801d804758
 walk_component+0xfc/0x5b0 fs/namei.c:2010
 link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331
 link_path_walk fs/namei.c:2255 [inline]
 path_lookupat+0x93/0x770 fs/namei.c:2492
 filename_lookup+0x1e5/0x5b0 fs/namei.c:2522
 user_path_at_empty+0x42/0x60 fs/namei.c:2929
 user_path_at include/linux/namei.h:58 [inline]
 do_utimes_path+0xf4/0x1c0 fs/utimes.c:95
 do_utimes+0x34/0x100 fs/utimes.c:145
 __do_sys_utimensat fs/utimes.c:164 [inline]
 __se_sys_utimensat fs/utimes.c:148 [inline]
 __x64_sys_utimensat+0x1c7/0x290 fs/utimes.c:148
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8631f65fcc
RSP: 002b:00007ffc283e7ce8 EFLAGS: 00000202 ORIG_RAX: 0000000000000118
RAX: ffffffffffffffda RBX: 00007ffc283e7d88 RCX: 00007f8631f65fcc
RDX: 0000000000000000 RSI: 000055997e8fab40 RDI: 00000000ffffff9c
RBP: 000055997e8fab40 R08: 0000000000000005 R09: 83b9acaba0ec3f9b
R10: 0000000000000100 R11: 0000000000000202 R12: 00007ffc283e8188
R13: 00007ffc283e8e18 R14: 000055997e906830 R15: 000055997e8fab5c
 </TASK>
rcu: rcu_preempt kthread starved for 9856 jiffies! g23561 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:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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-rc4-syzkaller-00164-g66cc544fd75c #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+0x1a/0x20 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 68 83 1c 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 38 dd b3 00 fb f4 <fa> c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d58 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8ae738b9
RDX: 0000000000000001 RSI: ffff888019a8d000 RDI: ffff888019a8d064
RBP: ffff888019a8d064 R08: 0000000000000001 R09: ffffed1017266fdd
R10: ffff8880b9337eeb R11: 0000000000000000 R12: ffff88801b7e0000
R13: ffffffff8e742420 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd8895bf80 CR3: 000000005d9d2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x313/0x3f0 kernel/sched/idle.c:332
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
 start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x148
 </TASK>