rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=ee3c/1/0x4000000000000000 softirq=24909/24909 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=46277, q=318 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8373 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: be b0 01 00 00 e8 a0 ff ff ff 31 c0 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 65 48 8b 15 04 db 76 7e 65 8b 05 05 db 76 7e a9 00 01
RSP: 0018:ffffc90000007dc8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88802e408340 RCX: 1ffff11017285963
RDX: dffffc0000000000 RSI: ffffffff8ac37c40 RDI: ffff88802e408348
RBP: ffff8880b942cb10 R08: 0000000000000006 R09: 0000000000000001
R10: ffff88802e408340 R11: 0000000000000005 R12: ffff8880b942cb18
R13: 0000000000000000 R14: ffff8880b942c9c0 R15: 0000000000000000
FS:  00005555826c9480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30626000 CR3: 0000000068f4a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rb_erase_cached include/linux/rbtree.h:126 [inline]
 timerqueue_del+0x78/0x150 lib/timerqueue.c:57
 __remove_hrtimer+0x99/0x290 kernel/time/hrtimer.c:1123
 __run_hrtimer kernel/time/hrtimer.c:1672 [inline]
 __hrtimer_run_queues+0x577/0xc20 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x410 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 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:on_stack arch/x86/include/asm/stacktrace.h:60 [inline]
RIP: 0010:stack_access_ok+0x1e0/0x270 arch/x86/kernel/unwind_orc.c:393
Code: 50 00 48 39 eb 41 0f 93 c6 e9 30 ff ff ff e8 97 62 50 00 4c 8b 3c 24 4c 39 fd 0f 83 d3 fe ff ff e8 85 62 50 00 48 8b 44 24 08 <48> 01 e8 49 39 c6 48 89 04 24 0f 83 b9 fe ff ff e8 6b 62 50 00 48
RSP: 0018:ffffc900042bf7f8 EFLAGS: 00000293
RAX: 0000000000000008 RBX: ffffc900042bf8c0 RCX: ffffffff813c94e6
RDX: ffff888020e23c00 RSI: ffffffff813c962b RDI: 0000000000000005
RBP: ffffc900042bfc80 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: ffffc900042bf8c8
R13: ffffc900042bf8d0 R14: ffffc900042b8000 R15: ffffc900042c0000
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0x1b94/0x23a0 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:541
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2734
 dentry_free+0xc2/0x160 fs/dcache.c:376
 __dentry_kill+0x498/0x600 fs/dcache.c:622
 shrink_kill fs/dcache.c:1048 [inline]
 shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1075
 shrink_dcache_parent+0xe2/0x530 fs/dcache.c:1509
 vfs_rmdir fs/namei.c:4213 [inline]
 vfs_rmdir+0x226/0x660 fs/namei.c:4186
 do_rmdir+0x3a2/0x410 fs/namei.c:4268
 __do_sys_unlinkat fs/namei.c:4444 [inline]
 __se_sys_unlinkat fs/namei.c:4438 [inline]
 __x64_sys_unlinkat+0xf3/0x130 fs/namei.c:4438
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9f77e7d647
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 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:00007ffe033374b8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f9f77e7d647
RDX: 0000000000000200 RSI: 00007ffe03338630 RDI: 00000000ffffff9c
RBP: 00007f9f77ec93b9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffe03338630
R13: 00007f9f77ec93b9 R14: 000000000004eb5c R15: 000000000000000c
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g46277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=22209
rcu: rcu_preempt kthread starved for 10502 jiffies! g46277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28048 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5c70 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6828
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2572
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>