[Bug 91921] radeon: command stream overflowed with current git

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=91921

            Bug ID: 91921
           Summary: radeon: command stream overflowed with current git
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: octoploid@yandex.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 118141
  --> https://bugs.freedesktop.org/attachment.cgi?id=118141&action=edit
screenshot

Trying to run krunner (from KDE plasma-workspace-5.4.1) results in 
a garbled dialog box (see attached screenshot).

Console shows:

radeon: command stream overflowed
radeon: The kernel rejected CS see dmesg for more information.

dmesg shows nothing.

[    2.109692] [drm] Initialized drm 1.1.0 20060810
[    2.109703] [drm] radeon kernel modesetting enabled.
[    2.109903] [drm] initializing kernel modesetting (RS780 0x1002:0x9614
0x1043:0x834D).
[    2.109907] [drm] register mmio base: 0xFBEE0000
[    2.109907] [drm] register mmio size: 65536
[    2.110434] ATOM BIOS: 113
[    2.110453] radeon 0000:01:05.0: VRAM: 128M 0x00000000C0000000 -
0x00000000C7FFFFFF (128M used)
[    2.110455] radeon 0000:01:05.0: GTT: 512M 0x00000000A0000000 -
0x00000000BFFFFFFF
[    2.110457] [drm] Detected VRAM RAM=128M, BAR=128M
[    2.110458] [drm] RAM width 32bits DDR
[    2.110523] [TTM] Zone  kernel: Available graphics memory: 4081244 kiB
[    2.110524] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[    2.110525] [TTM] Initializing pool allocator
[    2.110528] [TTM] Initializing DMA pool allocator
[    2.110544] [drm] radeon: 128M of VRAM memory ready
[    2.110545] [drm] radeon: 512M of GTT memory ready.
[    2.110552] [drm] Loading RS780 Microcode
[    2.110557] == power state 0 ==
[    2.110558]  ui class: none
[    2.110559]  internal class: boot 
[    2.110560]  caps: video 
[    2.110561]  uvd    vclk: 0 dclk: 0
[    2.110561]          power level 0    sclk: 50000 vddc_index: 2
[    2.110562]          power level 1    sclk: 50000 vddc_index: 2
[    2.110562]  status: c r b 
[    2.110563] == power state 1 ==
[    2.110564]  ui class: performance
[    2.110564]  internal class: none
[    2.110565]  caps: video 
[    2.110565]  uvd    vclk: 0 dclk: 0
[    2.110566]          power level 0    sclk: 50000 vddc_index: 1
[    2.110566]          power level 1    sclk: 70000 vddc_index: 2
[    2.110566]  status: 
[    2.110567] == power state 2 ==
[    2.110567]  ui class: none
[    2.110568]  internal class: uvd 
[    2.110568]  caps: video 
[    2.110569]  uvd    vclk: 53300 dclk: 40000
[    2.110570]          power level 0    sclk: 50000 vddc_index: 1
[    2.110570]          power level 1    sclk: 50000 vddc_index: 1
[    2.110570]  status: 
[    2.123272] [drm] radeon: dpm initialized
[    2.123276] [drm] GART: num cpu pages 131072, num gpu pages 131072
[    2.141465] [drm] PCIE GART of 512M enabled (table at 0x00000000C0040000).
[    2.141512] radeon 0000:01:05.0: WB enabled
[    2.141514] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr
0x00000000a0000c00 and cpu addr 0xffff880216386c00
[    2.141515] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    2.141516] [drm] Driver supports precise vblank timestamp query.
[    2.141517] radeon 0000:01:05.0: radeon: MSI limited to 32-bit
[    2.141531] [drm] radeon: irq initialized.
[    2.173747] [drm] ring test on 0 succeeded in 1 usecs
[    2.174031] [drm] ib test on ring 0 succeeded in 0 usecs
[    2.174257] [drm] Radeon Display Connectors
[    2.174258] [drm] Connector 0:
[    2.174258] [drm]   VGA-1
[    2.174259] [drm]   DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c
0x7e4c
[    2.174260] [drm]   Encoders:
[    2.174260] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[    2.174261] [drm] Connector 1:
[    2.174261] [drm]   DVI-D-1
[    2.174262] [drm]   HPD3
[    2.174263] [drm]   DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c
0x7e5c
[    2.174263] [drm]   Encoders:
[    2.174263] [drm]     DFP3: INTERNAL_KLDSCP_LVTMA
[    2.174324] switching from power state:
[    2.174324]  ui class: none
[    2.174325]  internal class: boot 
[    2.174326]  caps: video 
[    2.174327]  uvd    vclk: 0 dclk: 0
[    2.174327]          power level 0    sclk: 50000 vddc_index: 2
[    2.174328]          power level 1    sclk: 50000 vddc_index: 2
[    2.174328]  status: c b 
[    2.174329] switching to power state:
[    2.174329]  ui class: performance
[    2.174330]  internal class: none
[    2.174330]  caps: video 
[    2.174331]  uvd    vclk: 0 dclk: 0
[    2.174331]          power level 0    sclk: 50000 vddc_index: 1
[    2.174332]          power level 1    sclk: 70000 vddc_index: 2
[    2.174332]  status: r 
[    2.214955] [drm] fb mappable at 0xF0141000
[    2.214955] [drm] vram apper at 0xF0000000
[    2.214956] [drm] size 7299072
[    2.214956] [drm] fb depth is 24
[    2.214957] [drm]    pitch is 6912
[    2.215011] fbcon: radeondrmfb (fb0) is primary device

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