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| author | Alan Modra <amodra@gmail.com> | 2017-09-26 21:47:24 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-09-26 22:12:40 +0930 |
| commit | 1b86808a86077722ee4f42ff97f836b12420bb2a (patch) | |
| tree | 62f8285b0a6a9b19614741d136da2038311ff8f4 /bfd/ChangeLog | |
| parent | 5c1c468d0eddd0fda1ec8c5f33888657f94e3266 (diff) | |
| download | gdb-1b86808a86077722ee4f42ff97f836b12420bb2a.zip gdb-1b86808a86077722ee4f42ff97f836b12420bb2a.tar.gz gdb-1b86808a86077722ee4f42ff97f836b12420bb2a.tar.bz2 | |
PR22209, invalid memory read in find_abstract_instance_name
This patch adds bounds checking for DW_FORM_ref_addr die refs, and
calculates them relative to the first .debug_info section. See the
big comment for why calculating relative to the current .debug_info
section was wrong for relocatable object files.
PR 22209
* dwarf2.c (struct comp_unit): Delete sec_info_ptr field.
(find_abstract_instance_name): Calculate DW_FORM_ref_addr relative
to stash->info_ptr_memory, and check die_ref is within that memory.
Set info_ptr_end correctly when another CU is refd. Check die_ref
for DW_FORM_ref4 etc. is within CU.
Diffstat (limited to 'bfd/ChangeLog')
| -rw-r--r-- | bfd/ChangeLog | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 78f95d1..b6f7381 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,14 @@ 2017-09-26 Alan Modra <amodra@gmail.com> + PR 22209 + * dwarf2.c (struct comp_unit): Delete sec_info_ptr field. + (find_abstract_instance_name): Calculate DW_FORM_ref_addr relative + to stash->info_ptr_memory, and check die_ref is within that memory. + Set info_ptr_end correctly when another CU is refd. Check die_ref + for DW_FORM_ref4 etc. is within CU. + +2017-09-26 Alan Modra <amodra@gmail.com> + PR 22205 * dwarf2.c (concat_filename): Return "<unknown>" on NULL filename. (read_formatted_entries): Init "fe". |