Huh, sorry. Must have been a mis-click, I just wanted to subscribe to
the bug I think. I've removed the flag now.
** Information type changed from Public Security to Public
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Hi Seth,
I see no security aspect either.
Ulrich marked it as such, maybe he can speak up.
Otherwise I think this is fine to be considered a non-security issue.
** Changed in: postgresql-12 (Ubuntu)
Status: Incomplete => Invalid
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Hello, I don't quickly spot why this bug is marked security; is there a
security component here that I am overlooking?
Thanks
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https://bugs.launchpad.net/bugs/1867173
Title:
FTBFS
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Status: New => Fix Released
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This bug was fixed in the package llvm-toolchain-10 - 1:10.0.0-1ubuntu2
---
llvm-toolchain-10 (1:10.0.0-1ubuntu2) focal; urgency=medium
* Apply D76596.diff, proposed backport from the trunk. LP: #1867173.
-- Matthias Klose Thu, 02 Apr 2020 11:56:42 +0200
** Changed in:
Old version:
ubuntu@s1lp05:~$ dpkg -S /usr/lib/llvm-10/bin/llvm-lto
llvm-10: /usr/lib/llvm-10/bin/llvm-lto
ubuntu@s1lp05:~$ dpkg -l llvm-10
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required
** Changed in: llvm-toolchain-10 (Ubuntu)
Status: New => Fix Committed
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Title:
FTBFS with llvm-10
To manage notifications about this bug
I tried it, and it seems to fix this test case at least.
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Title:
FTBFS with llvm-10
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It seems this was a known common-code issue that is fixed in mainline
not in LLVM 10. There's already a bug to port it to 10.0.1 (PR45272)
with a back ported patch https://reviews.llvm.org/D76596.
Can you try whether this fixes the problem?
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I think I found a bug that I would guess is causing this crash:
https://bugs.llvm.org/show_bug.cgi?id=45384
** Bug watch added: bugs.llvm.org/ #45384
https://bugs.llvm.org/show_bug.cgi?id=45384
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I tracked this down to a single commit that if reverted stops the test
case from segfaulting: 2d5820c. This is a patch that improves
CorrelatedValuePropagation to also handle And instructions.
I am currently working on finding the exact bug - I am not yet sure if
the bug is actually in that pass
llvm in Focal is currently at:
10.0.0~+rc5-1ubuntu1
Which should roughly be the RC5 tag plus
d21664cce1db8debe2528f36b1fbd2b8af9c9401
On [1] you can find produced binaries, also the sources if you extract
the tarballs and the build logs.
I think the cmake call is the following, but please have
I tried it on trunk (9adc7fc) built with gcc, and then also built a
second time with itself, but it did not show up.
It would help me if I could get the right cmake line, and the git commit
ID. I used:
cmake -G Ninja -DLLVM_ENABLE_PROJECTS="clang;compiler-rt"
-DCMAKE_BUILD_TYPE="Release"
Note: running the same against llvm-9 fails (probably because the former
build steps were done with llvm-10)
/usr/lib/llvm-9/bin/llvm-lto -thinlto -thinlto-action=thinlink -o
postgres.index.bc postgres/access/brin/brin.bc
error: can't create module summary index for buffer: Invalid summary
** Attachment added: "build dir with all artifacts"
https://bugs.launchpad.net/ubuntu/+source/postgresql-12/+bug/1867173/+attachment/5341460/+files/postgresql-12-12.2.tar.xz
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This is the full build directory.
to reach the error in there do:
$ postgresql-12-12.2/build/tmp_install/usr/lib/postgresql/12/lib/bitcode
$ /usr/lib/llvm-10/bin/llvm-lto -thinlto -thinlto-action=thinlink -o
postgres.index.bc postgres/access/brin/brin.bc
I extracted the same on x86 and tried it
I would be happy to help on this but not sure where to start - to run
/usr/lib/llvm-10/bin/llvm-lto -thinlto -thinlto-action=thinlink -o
postgres.index.bc postgres/access/brin/brin.bc
, I would need the input brin.bc file, but I don't have it...
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** Information type changed from Public to Public Security
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Title:
FTBFS with llvm-10
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** Tags added: s390x
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Title:
FTBFS with llvm-10
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Attaching a core dump out of gdb matching this issue.
** Attachment added: "core.41655.xz"
https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-10/+bug/1867173/+attachment/5336188/+files/core.41655.xz
** Changed in: postgresql-12 (Ubuntu)
Status: New => Incomplete
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It doesn't need all the arguments and can be shortened to:
/usr/lib/llvm-10/bin/llvm-lto -thinlto -thinlto-action=thinlink -o
postgres.index.bc postgres/access/brin/brin.bc
Stack dump:
0. Program arguments: /usr/lib/llvm-10/bin/llvm-lto -thinlto
-thinlto-action=thinlink -o postgres.index.bc
Log file out of the build process that fails.
At the end is the command to /usr/lib/llvm-10/bin/llvm-lto that crashes
#0 0x03ff7faab14a (/usr/lib/s390x-linux-gnu/libLLVM-10.so.1+0x9ab14a)
Segmentation fault
** Attachment added: "s390-llvm10-pg12-crash.txt"
Here a backtrace in GDB, let me know if I can check anything for you
there:
ubuntu@s1lp05:~/postgresql-12-12.2/build/tmp_install/usr/lib/postgresql/12/lib/bitcode$
gdb /usr/lib/llvm-10/bin/llvm-ltoGNU gdb (Ubuntu 9.1-0ubuntu1) 9.1
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+:
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