rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=225645, q=38)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295101069-4295090566), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.0  R  running task    25576 29293   9861 0x00004000
Call Trace:
 <IRQ>
 sched_show_task kernel/sched/core.c:5950 [inline]
 sched_show_task.cold+0x2e2/0x343 kernel/sched/core.c:5925
 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:558 [inline]
 rcu_pending kernel/rcu/tree.c:3237 [inline]
 rcu_sched_clock_irq.cold+0xba1/0xcfa kernel/rcu/tree.c:2308
 update_process_times+0x25/0x60 kernel/time/timer.c:1727
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:171
 tick_sched_timer+0x4e/0x140 kernel/time/tick-sched.c:1314
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x32c/0xdd0 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1119 [inline]
 smp_apic_timer_interrupt+0x15b/0x600 arch/x86/kernel/apic/apic.c:1144
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:kfree+0x1fe/0x2b0 mm/slab.c:3758
Code: 75 6b 48 83 3d aa 5c e4 07 00 0f 85 4e ff ff ff 0f 0b e8 55 9c c8 ff 48 83 3d 95 5c e4 07 00 0f 84 b3 00 00 00 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d 41 5c 41 5d c3 65 ff 05 c7 b2 52 7e 48 8b 05
RSP: 0018:ffffc90001cb7958 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000286 RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000286
RBP: ffff88809275de00 R08: ffff88804f5b6580 R09: fffffbfff1852712
R10: fffffbfff1852711 R11: ffffffff8c29388f R12: ffff8880aa0008c0
R13: ffffffff81c7c892 R14: 0000000000000000 R15: ffff8880a8184878
 iter_file_splice_write+0x592/0xb00 fs/splice.c:788
 do_splice_from fs/splice.c:863 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1037
 splice_direct_to_actor+0x38c/0x980 fs/splice.c:992
 do_splice_direct+0x1a8/0x270 fs/splice.c:1080
 do_sendfile+0x549/0xc40 fs/read_write.c:1520
 __do_sys_sendfile64 fs/read_write.c:1575 [inline]
 __se_sys_sendfile64 fs/read_write.c:1567 [inline]
 __x64_sys_sendfile64+0x149/0x210 fs/read_write.c:1567
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f98e8fb1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f98e8fb26d4 RCX: 000000000045c849
RDX: 00000000200001c0 RSI: 0000000000000005 RDI: 0000000000000005
RBP: 000000000076c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008d4 R14: 00000000004cb786 R15: 000000000076c0ec
rcu: rcu_preempt kthread starved for 10541 jiffies! g225645 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29024    10      2 0x80004000
Call Trace:
 schedule+0xd0/0x2a0 kernel/sched/core.c:4152
 schedule_timeout+0x36b/0x860 kernel/time/timer.c:1898
 rcu_gp_fqs_loop kernel/rcu/tree.c:1680 [inline]
 rcu_gp_kthread+0xc7a/0x1a10 kernel/rcu/tree.c:1848
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352