Bug 1302075 - ld.bfd segfaults in objalloc_free
ld.bfd segfaults in objalloc_free
Product: Fedora
Classification: Fedora
Component: binutils (Show other bugs)
x86_64 Linux
unspecified Severity unspecified
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Assigned To: Nick Clifton
Fedora Extras Quality Assurance
Depends On:
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Reported: 2016-01-26 12:39 EST by Uros Bizjak
Modified: 2016-12-20 13:14 EST (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Last Closed: 2016-12-20 13:14:10 EST
Type: Bug
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Attachments (Terms of Use)
object files and libraries to trigger segfault (106.15 KB, application/x-gzip)
2016-01-26 12:39 EST, Uros Bizjak
no flags Details

External Trackers
Tracker ID Priority Status Summary Last Updated
GNU Compiler Collection 69408 None None None 2016-01-26 12:39 EST

  None (edit)
Description Uros Bizjak 2016-01-26 12:39:39 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

How reproducible:


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)

Actual results:

Segmentation fault (core dumped)

Expected results:

Well, linking without segfault.

Additional info:

gdb session:

(gdb) r
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;
(gdb) bt
#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.
Comment 1 H.J. Lu 2016-01-26 13:56:22 EST
It was caused by binutils-2.25-kernel-ld-r.patch which has been
obsoleted by users/hjl/lto-mixed/master branch.
Comment 2 David Howells 2016-01-27 11:03:28 EST
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).
Comment 3 Fedora End Of Life 2016-11-24 10:13:15 EST
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
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Comment 4 Fedora End Of Life 2016-12-20 13:14:10 EST
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
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