[Bug binutils/22203] New: memory leak in elfxx-x86.c and _bfd_generic_read_minisymbols in binutils 2.29

[luanjunchao at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=22203

            Bug ID: 22203
           Summary: memory leak in elfxx-x86.c and
                    _bfd_generic_read_minisymbols in binutils 2.29
           Product: binutils
           Version: 2.29
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: luanjunchao at 163 dot com
  Target Milestone: ---

Created attachment 10475
  --> https://sourceware.org/bugzilla/attachment.cgi?id=10475&action=edit
poc of memory leak

When I run "nm-new -a -A -D -l -n -P -r -S --size-sort --special-syms
--synthetic --with-symbol-versions leak.elf", it shows that there are memory
leaks as follows:

==12910==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 495 byte(s) in 1 object(s) allocated from:
    #0 0x7fac81cf7602 in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x4277b7 in bfd_malloc /work/binutils-gdb-asan/bfd/libbfd.c:193
    #2 0x4279b1 in bfd_zmalloc /work/binutils-gdb-asan/bfd/libbfd.c:278
    #3 0x46f9ce in _bfd_x86_elf_get_synthetic_symtab
/work/binutils-gdb-asan/bfd/elfxx-x86.c:1829
    #4 0x4621cf in elf_x86_64_get_synthetic_symtab
/work/binutils-gdb-asan/bfd/elf64-x86-64.c:4963
    #5 0x40765a in display_rel_file /work/binutils-gdb-asan/binutils/nm.c:1155
    #6 0x408205 in display_file /work/binutils-gdb-asan/binutils/nm.c:1318
    #7 0x409dcd in main /work/binutils-gdb-asan/binutils/nm.c:1792
    #8 0x7fac816b182f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

Direct leak of 88 byte(s) in 1 object(s) allocated from:
    #0 0x7fac81cf7602 in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
    #1 0x4277b7 in bfd_malloc /work/binutils-gdb-asan/bfd/libbfd.c:193
    #2 0x431a39 in _bfd_generic_read_minisymbols
/work/binutils-gdb-asan/bfd/syms.c:814
    #3 0x4072ec in display_rel_file /work/binutils-gdb-asan/binutils/nm.c:1107
    #4 0x408205 in display_file /work/binutils-gdb-asan/binutils/nm.c:1318
    #5 0x409dcd in main /work/binutils-gdb-asan/binutils/nm.c:1792
    #6 0x7fac816b182f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

SUMMARY: AddressSanitizer: 583 byte(s) leaked in 2 allocation(s).

The leak.elf is attached.

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