Bug 111968 - Navi10 null pointer dereference in kernel 5.4 while running Vulkan CTS
Summary: Navi10 null pointer dereference in kernel 5.4 while running Vulkan CTS
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: DRI git
Hardware: All All
: not set normal
Assignee: Default DRI bug account
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Reported: 2019-10-10 15:26 UTC by Timur Kristóf
Modified: 2019-10-15 08:35 UTC (History)
1 user (show)

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i915 platform:
i915 features:


Attachments
dmesg log with kernel 5.4-rc2 that shows the null pointer dereference (126.87 KB, text/plain)
2019-10-10 15:26 UTC, Timur Kristóf
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Description Timur Kristóf 2019-10-10 15:26:36 UTC
Created attachment 145698 [details]
dmesg log with kernel 5.4-rc2 that shows the null pointer dereference

While running the Vulkan CTS, I encountered the following:

Running the cases dEQP-VK.memory.allocation.* will trigger a kernel NULL pointer dereference in amdgpu on 5.4-rc2, see the attached dmesg log. After this happens, the GPU can hang too, but doesn't always hang.

Hardware:
AMD Radeon RX 5700XT (reference card, made by Sapphire)
Dell U2718Q (two of them: one through HDMI, other through DisplayPort)
AMD Ryzen 7 3700X
MSI B450i

Software:
Fedora Workstation 31 x86_64
LLVM 9
Mesa master (what will be 19.3)
Comment 1 Alex Deucher 2019-10-10 15:41:14 UTC
I think that's a bug in dma-buf fixed with this patch:
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=7fbd0782bf94d46993a7e5c08c0feda8dcab1f76
Comment 2 Bas Nieuwenhuizen 2019-10-14 20:50:28 UTC
FWIW that patch fixes the mentioned stacktrace for me.
Comment 3 Bas Nieuwenhuizen 2019-10-14 20:56:32 UTC
Seems like the patch is only enqueued for drm-misc-next, shouldn't this be in drm-misc-fixes?
Comment 4 Alex Deucher 2019-10-14 22:13:23 UTC
Christian was going to commit it to the fixes branch as well.
Comment 5 Christian König 2019-10-15 08:35:39 UTC
This patch is already on the fixes branch for a while.


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