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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - *ERROR* amdgpu: ring 0 test failed (scratch(0xC040)=0xCAFEDEAD)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108607">108607</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>*ERROR* amdgpu: ring 0 test failed (scratch(0xC040)=0xCAFEDEAD)
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PowerPC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>joel.stan@gmail.com
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=142289" name="attach_142289" title="4.19.0-11706-g11743c56785c dmesg">attachment 142289</a> <a href="attachment.cgi?id=142289&action=edit" title="4.19.0-11706-g11743c56785c dmesg">[details]</a></span>
4.19.0-11706-g11743c56785c dmesg
Booting a ppc64le system results in this crash in Linux:
4.19.0-11706-g11743c56785c (linus' tree mid-4.20 merge window)
[ 5.689582] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 0
test failed (scratch(0xC040)=0xCAFEDEAD)
[ 5.689609] [drm:amdgpu_device_init [amdgpu]] *ERROR* hw_init of IP block
<gfx_v8_0> failed -22
[ 5.689611] amdgpu 0033:01:00.0: amdgpu_device_ip_init failed
[ 5.689613] amdgpu 0033:01:00.0: Fatal error during GPU init
[ 5.689614] [drm] amdgpu: finishing device.
[ 5.699992] EEH: Frozen PHB#33-PE#0 detected
[ 5.699997] EEH: PE location: CPU2 Slot1 (16x), PHB location: N/A
[ 5.700000] CPU: 88 PID: 895 Comm: kworker/88:1 Not tainted
4.19.0-11706-g11743c56785c #37
[ 5.700007] Workqueue: events work_for_cpu_fn
[ 5.700008] Call Trace:
[ 5.700012] [c00020000b603778] [c000000000ad3dac] dump_stack+0xb0/0xf4
(unreliable)
[ 5.700015] [c00020000b6037b8] [c000000000039638]
eeh_dev_check_failure+0x458/0x580
[ 5.700017] [c00020000b603858] [c0000000000397f8]
eeh_check_failure+0x98/0xe0
[ 5.700043] [c00020000b603898] [c0080000125520c8] amdgpu_mm_rreg+0x240/0x2a0
[amdgpu]
[ 5.700073] [c00020000b6038f8] [c0080000125a4484]
vi_common_hw_fini+0x3c/0xc0 [amdgpu]
[ 5.700104] [c00020000b603928] [c008000012702b9c]
amdgpu_device_fini+0x230/0x58c [amdgpu]
[ 5.700131] [c00020000b6039d8] [c0080000125580d0]
amdgpu_driver_unload_kms+0xe8/0x1f0 [amdgpu]
[ 5.700157] [c00020000b603a18] [c008000012558434]
amdgpu_driver_load_kms+0x25c/0x290 [amdgpu]
[ 5.700161] [c00020000b603a98] [c000000000668d7c]
drm_dev_register+0x1bc/0x270
[ 5.700186] [c00020000b603b38] [c0080000125506bc]
amdgpu_pci_probe+0x114/0x200 [amdgpu]
[ 5.700189] [c00020000b603bc8] [c0000000005b087c] local_pci_probe+0x6c/0x140
[ 5.700191] [c00020000b603c58] [c000000000105448] work_for_cpu_fn+0x38/0x60
[ 5.700192] [c00020000b603c88] [c00000000010a0e0]
process_one_work+0x2b0/0x560
[ 5.700194] [c00020000b603d18] [c00000000010a660] worker_thread+0x2d0/0x610
[ 5.700197] [c00020000b603db8] [c0000000001133cc] kthread+0x1ac/0x1c0
[ 5.700200] [c00020000b603e28] [c00000000000b790]
ret_from_kernel_thread+0x5c/0x6c
For those not familiar with ppc6le bare metal systems: they use
linux-as-a-bootloader, so this is the second kernel that has loaded. The first
kernel in this case was 4.19.0 (upstream release, no patches). The first kernel
also load the amdgpu driver.</pre>
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