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Bug 1960955 - Mesa OpenCL (Clover) fails to compile kernels due to bogus path /usr//usr/lib64/clc/
Summary: Mesa OpenCL (Clover) fails to compile kernels due to bogus path /usr//usr/lib...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: libclc
Version: 34
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Tom Stellard
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-05-16 19:06 UTC by Tomáš Trnka
Modified: 2021-07-12 17:20 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
Clone Of:
Environment:
Last Closed:
Type: Bug
Embargoed:

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Description Tomáš Trnka 2021-05-16 19:06:18 UTC 
Description of problem:
Upgrading to F34 broke Mesa OpenCL for me because all kernels fail to compile with "fatal error: cannot open file '/usr//usr/lib64/clc/kaveri-amdgcn-mesa-mesa3d.bc': No such file or directory".

Obviously some path prefixing must have gone wrong there, as there's no "usr" in /usr. Creating such a symlink (/usr/usr → /usr) makes everything work again.

Version-Release number of selected component (if applicable):
libclc-11.0.0-1.fc34.x86_64
mesa-libOpenCL-21.0.3-2.fc34.x86_64

(I have no idea if this is a bug in libclc, Mesa or elsewhere. Assigning to libclc for now because it owns the directory in question.)

How reproducible:
At will

Steps to Reproduce:
1. run "clinfo"

Actual results:
=== CL_PROGRAM_BUILD_LOG ===
fatal error: cannot open file '/usr//usr/lib64/clc/kaveri-amdgcn-mesa-mesa3d.bc': No such file or directory
  Preferred work group size multiple (kernel)     <getWGsizes:1504: create kernel : error -46>

Expected results:
  Preferred work group size multiple (kernel)     64
Comment 1 kartochka378 2021-05-31 09:44:32 UTC 
same here, clover unusable for me

fatal error: cannot open file '/usr//usr/lib64/clc/polaris10-amdgcn-mesa-mesa3d.bc': No such file or directory
  Preferred work group size multiple (kernel)     <getWGsizes:1504: create kernel : error -46>
Comment 2 Guilhem Lavaux 2021-06-29 21:00:45 UTC 
I confirm that the bug is still present with mesa-libOpenCL-21.1.3-1.fc34.x86_64. 

Running clinfo leads to (all the time):
=== CL_PROGRAM_BUILD_LOG ===
fatal error: cannot open file '/usr//usr/lib64/clc/polaris10-amdgcn-mesa-mesa3d.bc': No such file or directory


Checking strings in the libMesaOpenCL.so.1.0.0 shows:
strings /usr/lib64/libMesaOpenCL.so.1.0.0|grep clc
clc/clc.L
/usr//usr/lib64/clc/

which indicates the string is statically compiled in the binary.
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