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| author | Alan Modra <amodra@gmail.com> | 2012-05-16 03:35:29 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2012-05-16 03:35:29 +0000 |
| commit | eee3b786492c6a4564515f3a0ae4029645d73a01 (patch) | |
| tree | d02095282fd5fd217aabbc5891744263da81464f /bfd | |
| parent | 83e56e63c27c2d5293ae41d06a150c5a411f249f (diff) | |
| download | gdb-eee3b786492c6a4564515f3a0ae4029645d73a01.zip gdb-eee3b786492c6a4564515f3a0ae4029645d73a01.tar.gz gdb-eee3b786492c6a4564515f3a0ae4029645d73a01.tar.bz2 | |
PR ld/13962
PR ld/7023
* elf.c (bfd_section_from_shdr): Fail when .dynsym sh_info is
out of range. As a special case, fix sh_info for zero sh_size.
Do the same for .symtab.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 8 | ||||
| -rw-r--r-- | bfd/elf.c | 20 |
2 files changed, 27 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 05bc0de..34bee4f 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,11 @@ +2012-05-16 Alan Modra <amodra@gmail.com> + + PR ld/13962 + PR ld/7023 + * elf.c (bfd_section_from_shdr): Fail when .dynsym sh_info is + out of range. As a special case, fix sh_info for zero sh_size. + Do the same for .symtab. + 2012-05-15 James Murray <jsm@jsm-net.demon.co.uk> Stephane Carrez <stcarrez@nerim.fr> @@ -1646,7 +1646,15 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex) if (hdr->sh_entsize != bed->s->sizeof_sym) return FALSE; if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) - return FALSE; + { + if (hdr->sh_size != 0) + return FALSE; + /* Some assemblers erroneously set sh_info to one with a + zero sh_size. ld sees this as a global symbol count + of (unsigned) -1. Fix it here. */ + hdr->sh_info = 0; + return TRUE; + } BFD_ASSERT (elf_onesymtab (abfd) == 0); elf_onesymtab (abfd) = shindex; elf_tdata (abfd)->symtab_hdr = *hdr; @@ -1699,6 +1707,16 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex) if (hdr->sh_entsize != bed->s->sizeof_sym) return FALSE; + if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) + { + if (hdr->sh_size != 0) + return FALSE; + /* Some linkers erroneously set sh_info to one with a + zero sh_size. ld sees this as a global symbol count + of (unsigned) -1. Fix it here. */ + hdr->sh_info = 0; + return TRUE; + } BFD_ASSERT (elf_dynsymtab (abfd) == 0); elf_dynsymtab (abfd) = shindex; elf_tdata (abfd)->dynsymtab_hdr = *hdr; |