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| author | Keith Seitz <keiths@redhat.com> | 2014-04-16 14:39:10 -0700 |
|---|---|---|
| committer | Keith Seitz <keiths@redhat.com> | 2014-04-16 14:39:10 -0700 |
| commit | 22869d73e127511e177a6bd855f9b5dbe22b9eca (patch) | |
| tree | 3bc4ba2b15742dd220b1419b33acc9a0e8d00bf6 /gdb/dwarf2read.c | |
| parent | c4f87ca6dbe041e2a331e5054a76c9134f29d545 (diff) | |
| download | gdb-22869d73e127511e177a6bd855f9b5dbe22b9eca.zip gdb-22869d73e127511e177a6bd855f9b5dbe22b9eca.tar.gz gdb-22869d73e127511e177a6bd855f9b5dbe22b9eca.tar.bz2 | |
PR gdb/15827
Install some sanity checks that sibling DIE offsets are not beyond the
defined limits of the DWARF input buffer in read_partial_die and skip_one_die.
2014-03-20 Keith Seitz <keiths@redhat.com>
PR gdb/15827
* dwarf2read.c (skip_one_die): Check that all relative-offset
sibling DIEs fall within range of the current reader's buffer.
(read_partial_die): Likewise.
2014-03-20 Keith Seitz <keiths@redhat.com>
PR gdb/15827
* gdb.dwarf2/corrupt.c: New file.
* gdb.dwarf2/corrupt.exp: New file.
Diffstat (limited to 'gdb/dwarf2read.c')
| -rw-r--r-- | gdb/dwarf2read.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index 6d1b90c..e72cc4b 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -7104,6 +7104,8 @@ skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, if (sibling_ptr < info_ptr) complaint (&symfile_complaints, _("DW_AT_sibling points backwards")); + else if (sibling_ptr > reader->buffer_end) + dwarf2_section_buffer_overflow_complaint (reader->die_section); else return sibling_ptr; } @@ -15502,6 +15504,8 @@ read_partial_die (const struct die_reader_specs *reader, if (sibling_ptr < info_ptr) complaint (&symfile_complaints, _("DW_AT_sibling points backwards")); + else if (sibling_ptr > reader->buffer_end) + dwarf2_section_buffer_overflow_complaint (reader->die_section); else part_die->sibling = sibling_ptr; } |