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: Always. 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.
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).
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