rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=389849, q=188)
rcu: All QSes seen, last rcu_preempt kthread activity 10489 (4295175103-4295164614), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.3  R  running task    28592 27184   6773 0x00000008
Call Trace:
 <IRQ>
 sched_show_task.cold+0x332/0x396 kernel/sched/core.c:5339
 print_other_cpu_stall kernel/rcu/tree.c:1430 [inline]
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0xb37/0xe19 kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1638
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1401 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184
Code: 48 c7 c0 48 5b d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 5c 02 99 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 fa 05 c7 f9 eb c0 0f 0b 0f 0b 48 c7 c7 48
RSP: 0018:ffff8880ae607c20 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a4b69 RBX: 0000000000000286 RCX: 1ffff1103cea05f5
RDX: dffffc0000000000 RSI: ffff8881e7502f88 RDI: 0000000000000286
RBP: ffff8880ae623a40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000023a40 R14: 0000000000000000 R15: ffff8880ae623a40
 __mod_timer kernel/time/timer.c:1059 [inline]
 mod_timer+0x4ec/0xf30 kernel/time/timer.c:1102
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1326
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1363
 __run_timers kernel/time/timer.c:1684 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1697
 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:post_alloc_hook mm/page_alloc.c:1929 [inline]
RIP: 0010:prep_new_page mm/page_alloc.c:1939 [inline]
RIP: 0010:get_page_from_freelist+0x1e66/0x4170 mm/page_alloc.c:3370
Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 17 17 00 00 48 8b 5c 24 18 8b b4 24 80 00 00 00 48 89 df c7 43 34 01 00 00 00 <e8> 25 4c 19 00 8b b4 24 ec 00 00 00 ba 01 00 00 00 48 89 df e8 81
RSP: 0018:ffff8881c3d67840 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: ffffea0006f0f580 RCX: ffffffff81866b06
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffea0006f0f580
RBP: ffffea0006f0f5b4 R08: 0000000000000001 R09: fffff94000de1eb6
R10: ffffea0006f0f5b7 R11: 0000000000000000 R12: fffffffffffffffe
R13: 0000000000000000 R14: ffffea0006f0f5f4 R15: dffffc0000000000
 __alloc_pages_nodemask+0x387/0x2890 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 __do_cache_alloc mm/slab.c:3361 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 kmem_cache_alloc+0x1e4/0x370 mm/slab.c:3557
 getname_flags+0xce/0x590 fs/namei.c:140
 user_path_at_empty+0x2a/0x50 fs/namei.c:2609
 user_path_at include/linux/namei.h:57 [inline]
 do_utimes+0x1b4/0x320 fs/utimes.c:152
 do_futimesat+0x13c/0x1b0 fs/utimes.c:212
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cba9
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc3a7edec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb
RAX: ffffffffffffffda RBX: 000000000050cd00 RCX: 000000000045cba9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000040
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000cc0 R14: 00000000004cf0d9 R15: 00007fc3a7edf6d4
rcu: rcu_preempt kthread starved for 10541 jiffies! g389849 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29208    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2826 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3515
 schedule+0x8d/0x1b0 kernel/sched/core.c:3559
 schedule_timeout+0x4d8/0xef0 kernel/time/timer.c:1806
 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202
 kthread+0x30b/0x410 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415