Red Hat Bugzilla – Bug 1302075
ld.bfd segfaults in objalloc_free
Last modified: 2016-12-20 13:14:10 EST
Created attachment 1118561 [details]
object files and libraries to trigger segfault
Description of problem:
ld.bfd segfaults with attached object and library with following flags:
ld.bfd --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -r 20100430-1_0.o libgcov.a
Version-Release number of selected component (if applicable):
$ ld.bfd --version
GNU ld version 2.25-15.fc23
Steps to Reproduce:
$ ld.bfd --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -r 20100430-1_0.o libgcov.a
Segmentation fault (core dumped)
Segmentation fault (core dumped)
Well, linking without segfault.
Starting program: /usr/bin/ld.bfd --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -r 20100430-1_0.o libgcov.a
Program received signal SIGSEGV, Segmentation fault.
objalloc_free (o=0x0) at ./objalloc.c:181
181 l = (struct objalloc_chunk *) o->chunks;
#0 objalloc_free (o=0x0) at ./objalloc.c:181
#1 0x00007ffff7b0129d in bfd_hash_table_free (table=table@entry=0x555555831be0 <lang_definedness_table>) at hash.c:426
#2 0x0000555555572559 in lang_finish () at ldlang.c:1274
#3 cmdline_emit_object_only_section () at ldlang.c:9004
#4 0x000055555555f583 in main (argc=9, argv=0x7fffffffdc58) at ./ldmain.c:487
FYI, ld.gold works OK with provided flags.
It was caused by binutils-2.25-kernel-ld-r.patch which has been
obsoleted by users/hjl/lto-mixed/master branch.
I tried the testcase above:
(*) F23 system binutils - the SEGV happens.
(*) cross-binutils rebased on F24's system binutils-2.26, all patches applied - works (or, at least, doesn't SEGV).
(*) cross-binutils rebased on F24's system binutils-2.26 with the binutils-2.25-kernel-ld-r.patch and binutils-2.25.1-plugin-format-checking.patch patches removed - works (or, at least, doesn't SEGV).
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora 'version'
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.
Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 23 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.
Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.
If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
Thank you for reporting this bug and we are sorry it could not be fixed.