Re: glibc regression on alpha with 2.34+
Hello!
I have not been able to identify the commit that introduced the floating point
issue. However, I seem to have found what fixes the segfault properly and also
another fix for a third problem, see below.
FWIW, Adhemeveral told me he would be looking into the glibc issues on alpha in
the following days. Currently, I am out of ideas myself.
Adrian
===============================================================================
Issue:
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$ LD_LIBRARY_PATH=/home/glaubitz/glibc-git/build /bin/bash
/bin/bash: symbol lookup error: /home/glaubitz/glibc-git/build/libc.so.6.1: undefined symbol: _dl_audit_preinit, version GLIBC_PRIVATE
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$
Fixed by:
commit 144761540a1e40b85997d195d9a226a500531dc9
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Jan 13 18:04:49 2022 -0300
elf: Remove LD_USE_LOAD_BIAS
It is solely for prelink with PIE executables [1].
[1] https://sourceware.org/legacy-ml/libc-hacker/2003-11/msg00127.html
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Issue:
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$ LD_LIBRARY_PATH=/home/glaubitz/glibc-git/build /bin/bash
Segmentation fault
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$
Fixed by:
commit 0b98a8748759e88b58927882a8714109abe0a2d6
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Jul 22 17:10:57 2021 -0300
elf: Add _dl_audit_preinit
It consolidates the code required to call la_preinit audit
callback.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
csu/libc-start.c | 23 +++--------------------
elf/Versions | 2 +-
elf/dl-audit.c | 15 +++++++++++++++
sysdeps/generic/ldsodefs.h | 3 +++
4 files changed, 22 insertions(+), 21 deletions(-)
Issue:
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$ LD_LIBRARY_PATH=/home/glaubitz/glibc-git/build /bin/bash
Floating point exception
(sid-alpha-sbuild)glaubitz@nofan:~/glibc-git/build$
Introduced by:
(not found)
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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