rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=a52/1/0x4000000000000002 softirq=76371/76372 fqs=0 
rcu: 	 (t=10501 jiffies g=107601 q=1417)
rcu: rcu_preempt kthread starved for 10502 jiffies! g107601 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I29168    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2877 [inline]
 __schedule+0x817/0x1cc0 kernel/sched/core.c:3518
 schedule+0x92/0x180 kernel/sched/core.c:3562
 schedule_timeout+0x4db/0xfd0 kernel/time/timer.c:1803
 rcu_gp_fqs_loop kernel/rcu/tree.c:1971 [inline]
 rcu_gp_kthread+0x962/0x17b0 kernel/rcu/tree.c:2128
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 0
CPU: 0 PID: 11796 Comm: syz-executor.3 Not tainted 5.0.0+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree.c:1223
 print_cpu_stall kernel/rcu/tree.c:1360 [inline]
 check_cpu_stall kernel/rcu/tree.c:1434 [inline]
 rcu_pending kernel/rcu/tree.c:3103 [inline]
 rcu_sched_clock_irq.cold+0x500/0xa4a kernel/rcu/tree.c:2544
 update_process_times+0x32/0x80 kernel/time/timer.c:1635
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161
 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:select_bad_process mm/oom_kill.c:384 [inline]
RIP: 0010:out_of_memory mm/oom_kill.c:1086 [inline]
RIP: 0010:out_of_memory+0x6b2/0x1280 mm/oom_kill.c:1033
Code: 0f 85 85 09 00 00 4d 8b 67 10 4d 85 e4 0f 84 d8 01 00 00 e8 40 95 e3 ff 4c 89 fa 48 c7 c6 10 a9 8c 81 4c 89 e7 e8 ce cb 20 00 <e8> 29 95 e3 ff 49 8d 7f 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa
RSP: 0018:ffff888054c4f4f0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff816a8186 RDI: 0000000000000001
RBP: ffff888054c4f5c8 R08: ffff88808cc941c0 R09: ffffed100a989e61
R10: ffffed100a989e60 R11: 0000000000000003 R12: ffff888059c04a40
R13: 0000000000000000 R14: 0000000000000003 R15: ffff888054c4f5f8
 mem_cgroup_out_of_memory+0x1ca/0x230 mm/memcontrol.c:1405
 mem_cgroup_oom mm/memcontrol.c:1733 [inline]
 try_charge+0x102c/0x15c0 mm/memcontrol.c:2293
 mem_cgroup_try_charge+0x24d/0x5e0 mm/memcontrol.c:5918
 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5933
 shmem_getpage_gfp+0x69e/0x2500 mm/shmem.c:1859
 shmem_getpage mm/shmem.c:139 [inline]
 shmem_write_begin+0x105/0x1e0 mm/shmem.c:2469
 generic_perform_write+0x231/0x530 mm/filemap.c:3241
 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3370
 generic_file_write_iter+0x360/0x610 mm/filemap.c:3402
 call_write_iter include/linux/fs.h:1863 [inline]
 new_sync_write+0x4c7/0x760 fs/read_write.c:474
 __vfs_write+0xe4/0x110 fs/read_write.c:487
 vfs_write+0x20c/0x580 fs/read_write.c:549
 ksys_write+0xea/0x1f0 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458079
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9616b58c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458079
RDX: 00000000ffffff76 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9616b596d4
R13: 00000000004c7577 R14: 00000000004dd180 R15: 00000000ffffffff
sched: RT throttling activated