rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=210781, q=403 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295104528-4295094026), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g210781 f0x2 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:24944 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x1796/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f0/0x390 kernel/kthread.c:388
 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27446 Comm: syz-executor.4 Not tainted 6.9.0-rc6-syzkaller-00290-gb9158815de52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:mark_lock+0x148/0x350 kernel/locking/lockdep.c:4697
Code: c3 60 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 9a 6b 84 00 41 bc 01 00 00 00 44 85 33 74 16 44 89 e0 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 84 3c ff ff 85 c0
RSP: 0018:ffffc90000a08918 EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffffffff92be4528 RCX: ffffffff8172feca
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92efe500
RBP: 0000000000000008 R08: ffffffff92efe507 R09: 1ffffffff25dfca0
R10: dffffc0000000000 R11: fffffbfff25dfca1 R12: 0000000000000001
R13: dffffc0000000000 R14: 0000000000000100 R15: ffff888043f7e578
FS:  00007ff8a0e436c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2eb26000 CR3: 000000007c876000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 mark_usage kernel/locking/lockdep.c:4599 [inline]
 __lock_acquire+0xc0a/0x1fd0 kernel/locking/lockdep.c:5091
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1660 [inline]
 __hrtimer_run_queues+0x30f/0xd50 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 5e 24 75 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b3 70 e3 f5 65 8b 05 c4 8c 81 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900047b7960 EFLAGS: 00000206
RAX: 580f319186bef100 RBX: 1ffff920008f6f30 RCX: ffffffff8172feca
RDX: dffffc0000000000 RSI: ffffffff8bcab8a0 RDI: 0000000000000001
RBP: ffffc900047b79f0 R08: ffffffff92efe517 R09: 1ffffffff25dfca2
R10: dffffc0000000000 R11: fffffbfff25dfca3 R12: dffffc0000000000
R13: 1ffff920008f6f2c R14: ffffc900047b7980 R15: 0000000000000246
 debug_object_activate+0x3e4/0x510 lib/debugobjects.c:726
 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
 __call_rcu_common kernel/rcu/tree.c:2719 [inline]
 call_rcu+0x97/0xa70 kernel/rcu/tree.c:2838
 __dentry_kill+0x497/0x630 fs/dcache.c:622
 dput+0x19f/0x2b0 fs/dcache.c:845
 lookup_one_qstr_excl+0x1d9/0x260 fs/namei.c:1609
 filename_create+0x297/0x540 fs/namei.c:3893
 do_mkdirat+0xbd/0x3a0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4161 [inline]
 __se_sys_mkdirat fs/namei.c:4159 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4159
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8a007dca9
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:00007ff8a0e430c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ff8a01abf80 RCX: 00007ff8a007dca9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: ffffffffffffff9c
RBP: 00007ff8a00c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff8a01abf80 R15: 00007ffd6658a5b8
 </TASK>