https://sourceware.org/bugzilla/show_bug.cgi?id=25069
Mark Wielaard <mark at klomp dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-10-26
Ever confirmed|0 |1
--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
Thanks, replicated with that reproducer (and the stripped file from the first)
with valgrind:
mark@librem:~/build/elfutils-obj$ LD_LIBRARY_PATH=backends:libelf:libdw:libasm
valgrind -q src/unstrip poc2/hbo__dwelf_strtab.c\:284_2 poc2/stripped -o
/dev/null
==22429== Invalid read of size 1
==22429== at 0x4838C74: strlen (vg_replace_strmem.c:460)
==22429== by 0x49B3EE3: dwelf_strtab_add (dwelf_strtab.c:284)
==22429== by 0x11A8BE: copy_elided_sections (unstrip.c:1882)
==22429== by 0x11CDA2: handle_file (unstrip.c:2203)
==22429== by 0x11D10D: handle_explicit_files (unstrip.c:2268)
==22429== by 0x1121CF: main (unstrip.c:2603)
==22429== Address 0x5d8c3b5 is 0 bytes after a block of size 3,829 alloc'd
==22429== at 0x483577F: malloc (vg_replace_malloc.c:299)
==22429== by 0x4878E2D: __libelf_set_rawdata_wrlock (elf_getdata.c:332)
==22429== by 0x4879B5C: __elf_getdata_rdlock (elf_getdata.c:535)
==22429== by 0x4879B5C: __elf_getdata_rdlock (elf_getdata.c:458)
==22429== by 0x4879C73: elf_getdata (elf_getdata.c:562)
==22429== by 0x112B29: collect_symbols (unstrip.c:843)
==22429== by 0x119B7D: copy_elided_sections (unstrip.c:1820)
==22429== by 0x11CDA2: handle_file (unstrip.c:2203)
==22429== by 0x11D10D: handle_explicit_files (unstrip.c:2268)
==22429== by 0x1121CF: main (unstrip.c:2603)
==22429==
==22429== Invalid read of size 1
==22429== at 0x483D4E0: mempcpy (vg_replace_strmem.c:1536)
==22429== by 0x49B3BD2: mempcpy (string_fortified.h:48)
==22429== by 0x49B3BD2: copystrings (dwelf_strtab.c:301)
==22429== by 0x49B400C: dwelf_strtab_finalize (dwelf_strtab.c:342)
==22429== by 0x11AC4C: copy_elided_sections (unstrip.c:1929)
==22429== by 0x11CDA2: handle_file (unstrip.c:2203)
==22429== by 0x11D10D: handle_explicit_files (unstrip.c:2268)
==22429== by 0x1121CF: main (unstrip.c:2603)
==22429== Address 0x5d8c3b5 is 0 bytes after a block of size 3,829 alloc'd
==22429== at 0x483577F: malloc (vg_replace_malloc.c:299)
==22429== by 0x4878E2D: __libelf_set_rawdata_wrlock (elf_getdata.c:332)
==22429== by 0x4879B5C: __elf_getdata_rdlock (elf_getdata.c:535)
==22429== by 0x4879B5C: __elf_getdata_rdlock (elf_getdata.c:458)
==22429== by 0x4879C73: elf_getdata (elf_getdata.c:562)
==22429== by 0x112B29: collect_symbols (unstrip.c:843)
==22429== by 0x119B7D: copy_elided_sections (unstrip.c:1820)
==22429== by 0x11CDA2: handle_file (unstrip.c:2203)
==22429== by 0x11D10D: handle_explicit_files (unstrip.c:2268)
==22429== by 0x1121CF: main (unstrip.c:2603)
==22429==
src/unstrip: cannot write output file: section `sh_size' too small for data
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