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    SubjectRe: broken suspend, sometimes (drm related) [Was: 2.6.24-rc5-mm1]
    Date
    > next suspend/resume try:
    > BLE drm_addmap_core a: map ffff81007c2d9b00, handle 0000000000000000
    > BLE drm_addmap_core c: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_rmmap_locked b: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_addmap_core a: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_addmap_core c: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_rmmap_locked b: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_addmap_core a: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_addmap_core c: map ffff81007c2d9b00, handle ffffc20010092000
    > BLE drm_addmap_core a: map ffff81007c2d90c0, handle 8000000000000000
    > BLE drm_addmap_ioctl a: map ffff81007c2d96c0, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007c2d90c0, handle 0000000000000000
    > BLE drm_addmap_ioctl a: map ffff81007c2d96c0, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007c2d9800, handle 0000000000000000
    > BLE drm_addmap_core b: map ffff81007c2d9800, handle ffffc20010380000
    > BLE drm_addmap_ioctl a: map ffff81007c2d96c0, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007c2d9e80, handle ffff81007c2d9d40
    > BLE drm_addmap_ioctl a: map ffff81007c2d96c0, handle 0000000000000000
    > BLE drm_core_ioremap: map ffff81007d0ab050, handle ffffc20010240000
    > set status page addr 0x00033000
    > BLE drm_core_ioremap: map ffff81007d0ab098, handle ffffc20010096000
    > BLE drm_addmap_core a: map ffff81007bd7d440, handle 6632785c63766632
    > BLE drm_addmap_ioctl a: map ffff81007bd7d080, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007bd7d700, handle 6632785c63766632
    > BLE drm_addmap_ioctl a: map ffff81007bd7d080, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007c16f840, handle ffff81007c16f680
    > BLE drm_addmap_ioctl a: map ffff81007bd7d080, handle 0000000000000000
    > BLE drm_addmap_core a: map ffff81007c16f2c0, handle ffff81007cc33e10
    > BLE drm_addmap_ioctl a: map ffff81007c16f640, handle 0000000000000000
    > BLE drm_core_ioremapfree a: map ffff81007d0ab050, handle ffffc20010240000
    > BLE drm_core_ioremapfree b: map ffff81007d0ab050, handle ffffc20010240000
    > BLE drm_core_ioremapfree a: map ffff81007d0ab098, handle ffffc20010096000
    > BLE drm_core_ioremapfree b: map ffff81007d0ab098, handle ffffc20010096000
    > BLE drm_rmmap_locked a: map ffff81007c2d9800, handle ffffc20010380000
    > BLE drm_rmmap_locked b: map ffff81007c2d9b00, handle ffffc20010092000
    > PM: Syncing filesystems ... done.
    > PM: Preparing system for mem sleep
    > Freezing user space processes ... (elapsed 0.00 seconds) done.
    > Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
    > PM: Entering mem sleep
    > sd 2:0:0:0: [sdc] Synchronizing SCSI cache
    > sd 2:0:0:0: [sdc] Stopping disk
    > sd 1:0:0:0: [sdb] Synchronizing SCSI cache
    > sd 1:0:0:0: [sdb] Stopping disk
    > sd 0:0:0:0: [sda] Synchronizing SCSI cache
    > sd 0:0:0:0: [sda] Stopping disk
    > drm_sysfs_suspend
    > BAD BAD BAD ffff81007c2d9800 0000000000000000
    > suspend_device(): drm_sysfs_suspend+0x0/0x40() returns -5
    > Could not suspend device card0: error -5
    > sd 0:0:0:0: [sda] Starting disk
    >
    > I;m out of ideas, please give me a clue.

    This sounds a lot like a problem we had recently. The driver wasn't
    preserving its mappings across X startup/shutdown (drm open/close) and so
    you'd see crashes like this. It should be fixed already in DRM git.

    Jesse


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