[Bug 91865] [r600g] GPU hang in 'gsraytrace' - NI/Turks (6670)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91865

--- Comment #4 from Dieter Nützel <Dieter at nuetzel-hh.de> ---
dmesg snipped from another hang:

[ 1361.853214] radeon 0000:01:00.0: ring 0 stalled for more than 10099msec
[ 1361.853222] radeon 0000:01:00.0: GPU lockup (current fence id
0x00000000000b21b6 last fence id 0x00000000000b21ea on ring 0)
[ 1361.873984] [drm:r600_ib_test [radeon]] *ERROR* radeon: fence wait failed
(-35).
[ 1361.874010] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed
testing IB on GFX ring (-35).
[ 1361.921903] radeon 0000:01:00.0: GPU softreset: 0x00000009
[ 1361.921906] radeon 0000:01:00.0:   GRBM_STATUS               = 0xB2737828
[ 1361.921909] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x1E000007
[ 1361.921911] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[ 1361.921913] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[ 1361.921915] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[ 1361.921917] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[ 1361.921919] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x400C0000
[ 1361.921921] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00048006
[ 1361.921923] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x80268647
[ 1361.921925] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[ 1361.922215] radeon 0000:01:00.0: GRBM_SOFT_RESET=0x00007F6B
[ 1361.922270] radeon 0000:01:00.0: SRBM_SOFT_RESET=0x00000100
[ 1361.923429] radeon 0000:01:00.0:   GRBM_STATUS               = 0x00003828
[ 1361.923431] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[ 1361.923433] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[ 1361.923435] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[ 1361.923437] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[ 1361.923439] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[ 1361.923441] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00000000
[ 1361.923443] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00000000
[ 1361.923445] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x00000000
[ 1361.923448] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[ 1361.923480] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[ 1361.946777] [drm] enabling PCIE gen 2 link speeds, disable with
radeon.pcie_gen2=0
[ 1361.949613] [drm] PCIE GART of 1024M enabled (table at 0x0000000000274000).
[ 1361.949732] radeon 0000:01:00.0: WB enabled
[ 1361.949734] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr
0x0000000080000c00 and cpu addr 0xffff88036f42ac00
[ 1361.949736] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr
0x0000000080000c0c and cpu addr 0xffff88036f42ac0c
[ 1361.951504] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr
0x0000000000072118 and cpu addr 0xffffc90003432118
[ 1361.968087] [drm] ring test on 0 succeeded in 2 usecs
[ 1361.968099] [drm] ring test on 3 succeeded in 7 usecs
[ 1362.145206] [drm] ring test on 5 succeeded in 2 usecs
[ 1362.145218] [drm] UVD initialized successfully.
[ 1362.165411] [drm] ib test on ring 0 succeeded in 0 usecs
[ 1362.165468] [drm] ib test on ring 3 succeeded in 0 usecs
[ 1362.817284] [drm] ib test on ring 5 succeeded

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