rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P3091/1:b..l
	(detected by 1, t=10502 jiffies, g=17477, q=207 ncpus=2)
task:udevd           state:R  running task     stack:23176 pid:3091  ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lockref_put_return+0x0/0x10 lib/lockref.c:120
Code: 80 c1 03 38 c1 7c a9 4c 89 e7 e8 4b 70 ac fd eb 9f 44 89 e1 80 e1 07 80 c1 03 38 c1 7c b7 4c 89 e7 e8 a4 70 ac fd eb ad 66 90 <e8> 2b f5 54 fd b8 ff ff ff ff c3 0f 1f 44 00 00 55 41 57 41 56 41
RSP: 0018:ffffc9000306f720 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff1100e9432c1 RCX: ffff88807b120000
RDX: ffff88807b120000 RSI: 0000000000000000 RDI: ffff888074a19698
RBP: 0000000000000000 R08: ffffffff81f70c40 R09: fffffbfff20e7645
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888074a19608 R14: ffff888074a19698 R15: ffff888074a19780
 fast_dput+0x58/0x290 fs/dcache.c:785
 dput+0xda/0x1d0 fs/dcache.c:905
 step_into+0x351/0x1070 fs/namei.c:1851
 walk_component fs/namei.c:2004 [inline]
 link_path_walk+0x72c/0xee0 fs/namei.c:2325
 path_lookupat+0xa9/0x450 fs/namei.c:2478
 filename_lookup+0x251/0x600 fs/namei.c:2508
 vfs_statx+0x107/0x4b0 fs/stat.c:229
 vfs_fstatat fs/stat.c:267 [inline]
 __do_sys_newfstatat fs/stat.c:437 [inline]
 __se_sys_newfstatat fs/stat.c:431 [inline]
 __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5fc736b5f4
RSP: 002b:00007ffed1ee7e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055ce520128f0 RCX: 00007f5fc736b5f4
RDX: 00007ffed1ee7e88 RSI: 00007ffed1ee8318 RDI: 00000000ffffff9c
RBP: 00007ffed1ee7f18 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffed1ee8318
R13: 00007ffed1ee7e88 R14: 000055ce51fdd910 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 9450 jiffies! g17477 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=9091
rcu: rcu_preempt kthread starved for 9451 jiffies! g17477 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27064 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:567
Code: e3 da f6 48 83 e3 08 0f 85 0b 01 00 00 4c 8d 74 24 20 e8 94 a2 e1 f6 0f 1f 44 00 00 e8 ba df da f6 0f 00 2d 13 c4 b7 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 2b 5b 32 f7
RSP: 0018:ffffc90000177b80 EFLAGS: 000002d3
RAX: ffffffff8aafc406 RBX: 0000000000000000 RCX: ffff888012b49dc0
RDX: 0000000000000000 RSI: ffffffff8b0c0260 RDI: ffffffff8b5d62c0
RBP: ffffc90000177c10 R08: ffffffff8aafc3e8 R09: ffffed10025693b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200002ef70
R13: ffff888143eae804 R14: ffffc90000177ba0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556ab65c8 CR3: 000000005f064000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:704
 cpuidle_enter_state+0x516/0xf80 drivers/cpuidle/cpuidle.c:239
 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:356
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x3ce/0x680 kernel/sched/idle.c:303
 cpu_startup_entry+0x3d/0x60 kernel/sched/idle.c:401
 start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:281
 secondary_startup_64_no_verify+0xcf/0xdb
 </TASK>