vkms_vblank_simulate: vblank timer overrun
vkms_vblank_simulate: vblank timer overrun
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5758/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=25125, q=552 ncpus=2)
task:rm              state:R  running task     stack:27264 pid:5758  tgid:5758  ppid:5733   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x70 kernel/kcov.c:216
Code: cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 d4 ff 77 7e <65> 8b 05 d5 ff 77 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74
RSP: 0018:ffffc900033a7348 EFLAGS: 00000286
RAX: fffffbfff347e9e4 RBX: ffffea0000a05540 RCX: 0000000000000000
RDX: ffff88806e213c00 RSI: ffffffff81f639ce RDI: 0000000000000007
RBP: ffff88801c406a90 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
 __page_table_check_zero+0x113/0x370 mm/page_table_check.c:153
 page_table_check_alloc include/linux/page_table_check.h:33 [inline]
 post_alloc_hook+0x2c0/0x350 mm/page_alloc.c:1501
 prep_new_page mm/page_alloc.c:1508 [inline]
 get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3446
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4702
 alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2263
 pagetable_alloc_noprof include/linux/mm.h:2877 [inline]
 __pte_alloc_one_noprof include/asm-generic/pgalloc.h:70 [inline]
 pte_alloc_one+0x20/0x370 arch/x86/mm/pgtable.c:33
 __do_fault+0x320/0x490 mm/memory.c:4667
 do_cow_fault mm/memory.c:5108 [inline]
 do_fault mm/memory.c:5210 [inline]
 do_pte_missing mm/memory.c:3964 [inline]
 handle_pte_fault mm/memory.c:5538 [inline]
 __handle_mm_fault+0x10e9/0x5650 mm/memory.c:5681
 handle_mm_fault+0x498/0xa60 mm/memory.c:5849
 do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1389
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_stos_alternative+0x40/0x80 arch/x86/lib/clear_page_64.S:96
Code: ff c7 48 ff c9 75 f6 c3 cc cc cc cc 48 89 07 48 83 c7 08 83 e9 08 74 ef 83 f9 08 73 ef eb de 66 66 2e 0f 1f 84 00 00 00 00 00 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47
RSP: 0018:ffffc900033a7ba8 EFLAGS: 00050206
RAX: 0000000000000000 RBX: ffff888032e258a8 RCX: 0000000000000f30
RDX: ffff88806e213c00 RSI: ffffffff821a99d5 RDI: 00007f28982000d0
RBP: 00007f28982000d0 R08: 0000000000000000 R09: fffffbfff203b333
R10: ffffffff901d999f R11: 0000000000000000 R12: 00000000000000d0
R13: 00007f28981fd000 R14: ffff888032e258c8 R15: ffff888032e258b8
 __clear_user arch/x86/include/asm/uaccess_64.h:172 [inline]
 clear_user arch/x86/include/asm/uaccess_64.h:189 [inline]
 padzero fs/binfmt_elf.c:125 [inline]
 elf_load+0x6aa/0x880 fs/binfmt_elf.c:421
 load_elf_interp fs/binfmt_elf.c:675 [inline]
 load_elf_binary+0x3392/0x4d80 fs/binfmt_elf.c:1235
 search_binary_handler fs/exec.c:1820 [inline]
 exec_binprm fs/exec.c:1862 [inline]
 bprm_execve fs/exec.c:1913 [inline]
 bprm_execve+0x703/0x1960 fs/exec.c:1889
 do_execveat_common.isra.0+0x4f1/0x630 fs/exec.c:2020
 do_execve fs/exec.c:2094 [inline]
 __do_sys_execve fs/exec.c:2170 [inline]
 __se_sys_execve fs/exec.c:2165 [inline]
 __x64_sys_execve+0x8c/0xb0 fs/exec.c:2165
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4dde52cef7
RSP: 002b:00007fff773ff2b8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000558c9aa77be8 RCX: 00007f4dde52cef7
RDX: 0000558c9aa77c08 RSI: 0000558c9aa77be8 RDI: 0000558c9aa77c90
RBP: 0000558c9aa77c90 R08: 0000558c9aa77c95 R09: 00007fff77401e99
R10: 0000000000000008 R11: 0000000000000246 R12: 0000558c9aa77c08
R13: 00007f4dde6da904 R14: 0000558c9aa77c08 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 8183 jiffies! g25125 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R  running task     stack:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111