求助！linux下休眠异常

ljy23374

我们最近遇到个问题，在装linux OS(已经测试了BOSS linux和ubuntu)的情况下，休眠唤醒会有概率（3%～4%）的失败，BOSS下会重启，ubuntu下死机，windows下测试是没问题的。在查看kern.log文件后发现，出问题的时候OS在进休眠状态时并没有去创建hibernate image，所以唤醒时候OS找不到hibernate image才导致了重启或死机的问题，这是log文件：
Jul 11 02:50:32 ub-HEC41 kernel: [ 1371.198676] PM: Marking nosave pages: [mem 0x20000000-0x201fffff]
Jul 11 02:50:32 ub-HEC41 kernel: [ 1371.198687] PM: Basic memory bitmaps created
休眠异常的时候下面的信息没有打印
Jul 11 02:51:27 ub-HEC41 kernel: [ 1371.198688] PM: Syncing filesystems ... done.
Jul 11 02:51:27 ub-HEC41 kernel: [ 1371.365295] Freezing user space processes ... (elapsed 0.01 seconds) done.
Jul 11 02:51:27 ub-HEC41 kernel: [ 1371.378946] PM: Preallocating image memory... done (allocated 191509 pages)
......
查看内核代码hibernate.c文件：
int create_basic_memory_bitmaps(void)
{
        struct memory_bitmap *bm1, *bm2;
        int error = 0;

        BUG_ON(forbidden_pages_map || free_pages_map);

        bm1 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL);
        if (!bm1)
                return -ENOMEM;

        error = memory_bm_create(bm1, GFP_KERNEL, PG_ANY);
        if (error)
                goto Free_first_object;

        bm2 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL);
        if (!bm2)
                goto Free_first_bitmap;

        error = memory_bm_create(bm2, GFP_KERNEL, PG_ANY);
        if (error)
                goto Free_second_object;

        forbidden_pages_map = bm1;
        free_pages_map = bm2;
        mark_nosave_pages(forbidden_pages_map);

        pr_debug("PM: Basic memory bitmaps created\n");

        return 0;

Free_second_object:
        kfree(bm2);
Free_first_bitmap:
        memory_bm_free(bm1, PG_UNSAFE_CLEAR);
Free_first_object:
        kfree(bm1);
        return -ENOMEM;
}
int hibernate(void)
{
        int error;

        lock_system_sleep();
        /* The snapshot device should not be opened while we're running */
        if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
                error = -EBUSY;
                goto Unlock;
        }

        pm_prepare_console();
        error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
        if (error)
                goto Exit;

        /* Allocate memory management structures */
        error = create_basic_memory_bitmaps();
        if (error)
                goto Exit;

        printk(KERN_INFO "PM: Syncing filesystems ... ");
        sys_sync();
        printk("done.\n");，
从这两个函数我们可以发现Jul 11 02:50:32 ub-HEC41 kernel: [ 1371.198687] PM: Basic memory bitmaps created之后就应该执行printk(KERN_INFO "PM: Syncing filesystems ... ")了，为什么在这两个print之间会有异常呢，恳求指点，kernel或者BIOS都可以，欢迎走过路过的大虾们多提宝贵意见！

ljy23374

是我发的版块不对么？

ljy23374

{:3_183:}...