https://sourceware.org/bugzilla/show_bug.cgi?id=33199
Bug ID: 33199
Summary: SEGV in _bfd_x86_elf_create_sframe_plt
Product: binutils
Version: 2.46 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: ro at gcc dot gnu.org
CC: jpoimboe at redhat dot com
Target Milestone: ---
Target: amd64-pc-solaris2.11
On 64-bit Solaris/x86, 3 ld tests FAIL:
FAIL: LTO 4a
FAIL: LTO 4c
FAIL: LTO 4d
The failure is always the same:
collect2: fatal error: ld terminated with signal 11 [Segmentation Fault]
compilation terminated.
I could reproduce the failure with a way smaller testcase derived from LTO 4a:
$ ./ld-new -m elf_x86_64_sol2 -o tmpdir/lto-4a.exe /usr/lib/amd64/crt1.o
tmpdir/lto-4r-a.o tmpdir/dummy.o -lc
ld SEGVs here:
Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0x0000000000456106 in _bfd_x86_elf_create_sframe_plt (
plt_sec_type=plt_sec_type@entry=1, info=0x95ada0 <link_info>,
output_bfd=0x963de0)
at /vol/src/gnu/binutils/hg/master/local/bfd/elfxx-x86.c:1848
1848 plt0_entry_size
(gdb) bt
#0 0x0000000000456106 in _bfd_x86_elf_create_sframe_plt (
plt_sec_type=plt_sec_type@entry=1, info=0x95ada0 <link_info>,
output_bfd=0x963de0)
at /vol/src/gnu/binutils/hg/master/local/bfd/elfxx-x86.c:1848
#1 0x0000000000457bb5 in _bfd_x86_elf_late_size_sections (
output_bfd=<optimized out>, info=0x95ada0 <link_info>)
at /vol/src/gnu/binutils/hg/master/local/bfd/elfxx-x86.c:2515
#2 0x0000000000487367 in bfd_elf_size_dynamic_sections (
output_bfd=<optimized out>, soname=<optimized out>, rpath=rpath@entry=0x0,
filter_shlib=<optimized out>, audit=<optimized out>,
depaudit=<optimized out>, auxiliary_filters=<optimized out>,
info=<optimized out>, sinterpptr=<optimized out>)
at /vol/src/gnu/binutils/hg/master/local/bfd/elflink.c:7725
#3 0x000000000043274f in ldelf_before_allocation (audit=0x95b3e8 <audit>,
depaudit=0x95b3e0 <depaudit>,
default_interpreter_name=0x592b0c "/lib/amd64/ld.so.1")
at /vol/src/gnu/binutils/hg/master/local/ld/ldelf.c:1840
#4 0x00000000004198f8 in lang_process ()
at /vol/src/gnu/binutils/hg/master/local/ld/ldlang.c:8626
#5 0x0000000000403edb in main (argc=<optimized out>, argv=<optimized out>)
at /vol/src/gnu/binutils/hg/master/local/ld/ldmain.c:882
htab->plt.has_plt0 is 1 at this point, while htab->sframe_plt is NULL, which
causes the SEGV.
The code in question was introduced in
commit 938fb512184d90d24b86c42ef53ef33c943cbe8b
Author: Josh Poimboeuf <[email protected]>
Date: Fri Nov 1 15:36:03 2024 -0700
ld: fix wrong SFrame info for lazy IBT PLT
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