--- /dev/null
+From: Jan Beulich <jbeulich@suse.com>
+Date: Tue, 29 Mar 2022 06:19:14 +0000 (+0200)
+Subject: bfd/Dwarf2: gas doesn't mangle names
+X-Git-Tag: binutils-2_39~1287
+X-Git-Url: https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=ddfc2f56d5782af79c696d7fef7c73bba11e8b09
+
+bfd/Dwarf2: gas doesn't mangle names
+
+Include the language identifier emitted by gas in the set of ones where
+no mangled names are expected. Even if there could be "hand-mangled"
+names, gas doesn't emit DW_AT_linkage_name in the first place.
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=ddfc2f56d5782af79c696d7fef7c73bba11e8b09]
+
+CVE: CVE-2022-48065
+
+Signed-off-by: Sanjana Venkatesh <Sanjana.Venkatesh@windriver.com>
+
+---
+
+diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
+index 8cd0ce9d425..9aa4e955a5e 100644
+--- a/bfd/dwarf2.c
++++ b/bfd/dwarf2.c
+@@ -1441,6 +1441,7 @@ non_mangled (int lang)
+ case DW_LANG_PLI:
+ case DW_LANG_UPC:
+ case DW_LANG_C11:
++ case DW_LANG_Mips_Assembler:
+ return true;
+ }
+ }
--- /dev/null
+From: Alan Modra <amodra@gmail.com>
+Date: Wed, 21 Sep 2022 05:15:44 +0000 (+0930)
+Subject: dwarf2.c: mangle_style
+X-Git-Tag: gdb-13-branchpoint~1165
+X-Git-Url: https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=4609af80c29db6015ce01b67c48f237c210da9b4
+
+dwarf2.c: mangle_style
+
+non_mangled incorrectly returned "true" for Ada. Correct that, and
+add a few more non-mangled entries. Return a value suitable for
+passing to cplus_demangle to control demangling.
+
+ * dwarf2.c: Include demangle.h.
+ (mangle_style): Rename from non_mangled. Return DMGL_* value
+ to suit lang. Adjust all callers.
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=4609af80c29db6015ce01b67c48f237c210da9b4]
+
+CVE: CVE-2022-48065
+
+Signed-off-by: Sanjana Venkatesh <Sanjana.Venkatesh@windriver.com>
+
+---
+
+diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
+index e7c12c3e9de..138cdbb00bb 100644
+--- a/bfd/dwarf2.c
++++ b/bfd/dwarf2.c
+@@ -32,6 +32,7 @@
+ #include "sysdep.h"
+ #include "bfd.h"
+ #include "libiberty.h"
++#include "demangle.h"
+ #include "libbfd.h"
+ #include "elf-bfd.h"
+ #include "dwarf2.h"
+@@ -1711,31 +1712,52 @@ read_attribute (struct attribute * attr,
+ return info_ptr;
+ }
+
+-/* Return whether DW_AT_name will return the same as DW_AT_linkage_name
+- for a function. */
++/* Return mangling style given LANG. */
+
+-static bool
+-non_mangled (int lang)
++static int
++mangle_style (int lang)
+ {
+ switch (lang)
+ {
++ case DW_LANG_Ada83:
++ case DW_LANG_Ada95:
++ return DMGL_GNAT;
++
++ case DW_LANG_C_plus_plus:
++ case DW_LANG_C_plus_plus_03:
++ case DW_LANG_C_plus_plus_11:
++ case DW_LANG_C_plus_plus_14:
++ return DMGL_GNU_V3;
++
++ case DW_LANG_Java:
++ return DMGL_JAVA;
++
++ case DW_LANG_D:
++ return DMGL_DLANG;
++
++ case DW_LANG_Rust:
++ case DW_LANG_Rust_old:
++ return DMGL_RUST;
++
+ default:
+- return false;
++ return DMGL_AUTO;
+
+ case DW_LANG_C89:
+ case DW_LANG_C:
+- case DW_LANG_Ada83:
+ case DW_LANG_Cobol74:
+ case DW_LANG_Cobol85:
+ case DW_LANG_Fortran77:
+ case DW_LANG_Pascal83:
+- case DW_LANG_C99:
+- case DW_LANG_Ada95:
+ case DW_LANG_PLI:
++ case DW_LANG_C99:
+ case DW_LANG_UPC:
+ case DW_LANG_C11:
+ case DW_LANG_Mips_Assembler:
+- return true;
++ case DW_LANG_Upc:
++ case DW_LANG_HP_Basic91:
++ case DW_LANG_HP_IMacro:
++ case DW_LANG_HP_Assembler:
++ return 0;
+ }
+ }
+
+@@ -3599,7 +3621,7 @@ find_abstract_instance (struct comp_unit *unit,
+ if (name == NULL && is_str_form (&attr))
+ {
+ name = attr.u.str;
+- if (non_mangled (unit->lang))
++ if (mangle_style (unit->lang) == 0)
+ *is_linkage = true;
+ }
+ break;
+@@ -4095,7 +4117,7 @@ scan_unit_for_symbols (struct comp_unit *unit)
+ if (func->name == NULL && is_str_form (&attr))
+ {
+ func->name = attr.u.str;
+- if (non_mangled (unit->lang))
++ if (mangle_style (unit->lang) == 0)
+ func->is_linkage = true;
+ }
+ break;
--- /dev/null
+From: Alan Modra <amodra@gmail.com>
+Date: Wed, 21 Dec 2022 11:10:12 +0000 (+1030)
+Subject: PR29925, Memory leak in find_abstract_instance
+X-Git-Tag: binutils-2_40~192
+X-Git-Url: https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=d28fbc7197ba0e021a43f873eff90b05dcdcff6a
+
+PR29925, Memory leak in find_abstract_instance
+
+The testcase in the PR had a variable with both DW_AT_decl_file and
+DW_AT_specification, where the DW_AT_specification also specified
+DW_AT_decl_file. This leads to a memory leak as the file name is
+malloced and duplicates are not expected.
+
+I've also changed find_abstract_instance to not use a temp for "name",
+because that can result in a change in behaviour from the usual last
+of duplicate attributes wins.
+
+ PR 29925
+ * dwarf2.c (find_abstract_instance): Delete "name" variable.
+ Free *filename_ptr before assigning new file name.
+ (scan_unit_for_symbols): Similarly free func->file and
+ var->file before assigning.
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=d28fbc7197ba0e021a43f873eff90b05dcdcff6a]
+
+CVE: CVE-2022-48065
+
+Signed-off-by: Sanjana Venkatesh <Sanjana.Venkatesh@windriver.com>
+
+---
+
+diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
+index 0cd8152ee6e..b608afbc0cf 100644
+--- a/bfd/dwarf2.c
++++ b/bfd/dwarf2.c
+@@ -3441,7 +3441,6 @@ find_abstract_instance (struct comp_unit *unit,
+ struct abbrev_info *abbrev;
+ uint64_t die_ref = attr_ptr->u.val;
+ struct attribute attr;
+- const char *name = NULL;
+
+ if (recur_count == 100)
+ {
+@@ -3602,9 +3601,9 @@ find_abstract_instance (struct comp_unit *unit,
+ case DW_AT_name:
+ /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name
+ over DW_AT_name. */
+- if (name == NULL && is_str_form (&attr))
++ if (*pname == NULL && is_str_form (&attr))
+ {
+- name = attr.u.str;
++ *pname = attr.u.str;
+ if (mangle_style (unit->lang) == 0)
+ *is_linkage = true;
+ }
+@@ -3612,7 +3611,7 @@ find_abstract_instance (struct comp_unit *unit,
+ case DW_AT_specification:
+ if (is_int_form (&attr)
+ && !find_abstract_instance (unit, &attr, recur_count + 1,
+- &name, is_linkage,
++ pname, is_linkage,
+ filename_ptr, linenumber_ptr))
+ return false;
+ break;
+@@ -3622,7 +3621,7 @@ find_abstract_instance (struct comp_unit *unit,
+ non-string forms into these attributes. */
+ if (is_str_form (&attr))
+ {
+- name = attr.u.str;
++ *pname = attr.u.str;
+ *is_linkage = true;
+ }
+ break;
+@@ -3630,8 +3629,11 @@ find_abstract_instance (struct comp_unit *unit,
+ if (!comp_unit_maybe_decode_line_info (unit))
+ return false;
+ if (is_int_form (&attr))
+- *filename_ptr = concat_filename (unit->line_table,
+- attr.u.val);
++ {
++ free (*filename_ptr);
++ *filename_ptr = concat_filename (unit->line_table,
++ attr.u.val);
++ }
+ break;
+ case DW_AT_decl_line:
+ if (is_int_form (&attr))
+@@ -3643,7 +3645,6 @@ find_abstract_instance (struct comp_unit *unit,
+ }
+ }
+ }
+- *pname = name;
+ return true;
+ }
+
+@@ -4139,8 +4140,11 @@ scan_unit_for_symbols (struct comp_unit *unit)
+
+ case DW_AT_decl_file:
+ if (is_int_form (&attr))
+- func->file = concat_filename (unit->line_table,
+- attr.u.val);
++ {
++ free (func->file);
++ func->file = concat_filename (unit->line_table,
++ attr.u.val);
++ }
+ break;
+
+ case DW_AT_decl_line:
+@@ -4182,8 +4186,11 @@ scan_unit_for_symbols (struct comp_unit *unit)
+
+ case DW_AT_decl_file:
+ if (is_int_form (&attr))
+- var->file = concat_filename (unit->line_table,
+- attr.u.val);
++ {
++ free (var->file);
++ var->file = concat_filename (unit->line_table,
++ attr.u.val);
++ }
+ break;
+
+ case DW_AT_decl_line:
projects / thirdparty / openembedded / openembedded-core.git / commitdiff
