oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=syz5,mems_allowed=0-1,oom_memcg=/syz5,task_memcg=/syz5,task=syz-executor5,pid=10326,uid=0
Memory cgroup out of memory: Kill process 10326 (syz-executor5) score 1113 or sacrifice child
Killed process 10326 (syz-executor5) total-vm:72580kB, anon-rss:3048kB, file-rss:34816kB, shmem-rss:0kB
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=712/1/0x4000000000000002 softirq=196829/196840 fqs=12 
rcu: 	 (t=10500 jiffies g=320937 q=707)
rcu: rcu_preempt kthread starved for 10441 jiffies! g320937 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    28928    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2844 [inline]
 __schedule+0x817/0x1cc0 kernel/sched/core.c:3485
 schedule+0x92/0x180 kernel/sched/core.c:3529
 schedule_timeout+0x4db/0xfd0 kernel/time/timer.c:1803
 rcu_gp_fqs_loop kernel/rcu/tree.c:1948 [inline]
 rcu_gp_kthread+0x956/0x17a0 kernel/rcu/tree.c:2105
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 0
CPU: 0 PID: 4308 Comm: syz-executor5 Not tainted 5.0.0-rc5+ #61
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:1211
 print_cpu_stall kernel/rcu/tree.c:1348 [inline]
 check_cpu_stall kernel/rcu/tree.c:1422 [inline]
 rcu_pending kernel/rcu/tree.c:3018 [inline]
 rcu_check_callbacks.cold+0x500/0xa4a kernel/rcu/tree.c:2521
 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline]
RIP: 0010:lock_release+0x4c1/0xa00 kernel/locking/lockdep.c:3863
Code: 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 28 03 00 00 48 83 3d 2e 38 3b 07 00 0f 84 cf 01 00 00 48 8b bd 68 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 c7 04 03 00 00 00
RSP: 0018:ffff88821439f150 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff112503e RBX: 1ffff11042873e30 RCX: 1ffff1100ff6b10e
RDX: dffffc0000000000 RSI: 1ffff1100ff6b11a RDI: 0000000000000282
RBP: ffff88821439f208 R08: ffff88807fb58000 R09: 0000000000000003
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff88807fb58000
R13: ffffffff81aaf926 R14: ffffffff8a556aa0 R15: ffff88821439f1e0
 rcu_lock_release include/linux/rcupdate.h:228 [inline]
 rcu_read_unlock+0x33/0x60 include/linux/rcupdate.h:661
 mem_cgroup_iter+0x45e/0xad0 mm/memcontrol.c:1012
 shrink_node+0x3c7/0x1540 mm/vmscan.c:2781
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:3049
 try_to_free_mem_cgroup_pages+0x337/0x960 mm/vmscan.c:3353
 try_charge+0x3d7/0x1570 mm/memcontrol.c:2234
 mem_cgroup_try_charge+0x24d/0x5e0 mm/memcontrol.c:5913
 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5928
 shmem_getpage_gfp+0x69b/0x3520 mm/shmem.c:1790
 shmem_getpage mm/shmem.c:134 [inline]
 shmem_write_begin+0x105/0x1e0 mm/shmem.c:2385
 generic_perform_write+0x231/0x530 mm/filemap.c:3208
 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3333
 generic_file_write_iter+0x360/0x610 mm/filemap.c:3361
 call_write_iter include/linux/fs.h:1863 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x613/0x8e0 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: 0033:0x457e39
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:00007f21a6012c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e39
RDX: 00000000ffffff76 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21a60136d4
R13: 00000000004c737b R14: 00000000004dcea0 R15: 00000000ffffffff