From: Alan Modra <amodra@gmail.com>
To: binutils@sourceware.org
Subject: asan: heap buffer overflow elf_link_add_to_first_hash
Date: Thu, 11 Apr 2024 17:07:26 +0930 [thread overview]
Message-ID: <ZheTNvrG0qZZCf0W@squeak.grove.modra.org> (raw)
Seen on mmix.
mmix +FAIL: ld-misc/defsym1
mmix +FAIL: sysroot-prefix common plain -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain -Lpath, unquoted
mmix +FAIL: sysroot-prefix common full-path, quoted
mmix +FAIL: sysroot-prefix common full-path, unquoted
mmix +FAIL: sysroot-prefix common plain =-prefixed with empty, quoted
mmix +FAIL: sysroot-prefix common plain =-prefixed with empty, unquoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed with empty, quoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed with empty, unquoted
mmix +FAIL: sysroot-prefix common plain =-prefixed -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain =-prefixed -Lpath, unquoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed -Lpath, unquoted
mmix +FAIL: sysroot-prefix common full-path =-prefixed without, quoted
mmix +FAIL: sysroot-prefix common full-path =-prefixed without, unquoted
mmix +FAIL: sysroot-prefix common full-path $SYSROOT-prefixed without, quoted
mmix +FAIL: sysroot-prefix common full-path $SYSROOT-prefixed without, unquoted
==3746597==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6070000007a0 at pc 0x56d87b0d1a40 bp 0x7fffb1629bf0 sp 0x7fffb1629be0
READ of size 8 at 0x6070000007a0 thread T0
#0 0x56d87b0d1a3f in elf_link_add_to_first_hash /home/alan/src/binutils-gdb/bfd/elflink.c:4312
mmix uses bfd_link_generic_hash_table.
* elflink.c (_bfd_elf_archive_symbol_lookup): Dont use first_hash
unless the hash table is bfd_link_elf_hash_table.
(elf_link_add_archive_symbols): Likewise.
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 22fddb8f56b..321e3d5e2ff 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -6116,7 +6116,8 @@ _bfd_elf_archive_symbol_lookup (bfd *abfd,
{
/* Add this symbol to first hash if this archive has the first
definition. */
- elf_link_add_to_first_hash (abfd, info, name, false);
+ if (is_elf_hash_table (info->hash))
+ elf_link_add_to_first_hash (abfd, info, name, false);
return h;
}
@@ -6258,6 +6259,8 @@ elf_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info)
/* Symbol must be defined. Don't check it again. */
included[i] = true;
+ if (!is_elf_hash_table (info->hash))
+ continue;
/* Ignore the archive if the symbol isn't defined in a
shared object. */
if (!((struct elf_link_hash_entry *) h)->def_dynamic)
--
Alan Modra
Australia Development Lab, IBM
reply other threads:[~2024-04-11 7:37 UTC|newest]
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