26 lines
1.0 KiB
Diff
26 lines
1.0 KiB
Diff
|
rhbz1991997
|
||
|
|
|
||
|
|
commit 212576147 (refs/bisect/new)
|
||
|
|
Author: Xiaozhu Meng <mxz297@gmail.com>
|
||
|
|
Date: Wed May 26 11:26:28 2021 -0500
|
||
|
|
|
||
|
|
Skip parsing of blocks whose code buffer is null (#1033)
|
||
|
|
|
||
|
|
--- dyninst-11.0.0/parseAPI/src/Parser.C.orig
|
||
|
|
+++ dyninst-11.0.0/parseAPI/src/Parser.C
|
||
|
|
@@ -1703,6 +1703,14 @@ Parser::parse_frame_one_iteration(ParseFrame &frame, bool recursive) {
|
||
|
|
cur->region()->offset() + cur->region()->length() - curAddr;
|
||
|
|
const unsigned char* bufferBegin =
|
||
|
|
(const unsigned char *)(func->region()->getPtrToInstruction(curAddr));
|
||
|
|
+ if (bufferBegin == nullptr) {
|
||
|
|
+ // This can happen if jump table is over-approxiated.
|
||
|
|
+ // We ignore this block for now, and later the over-approximated block
|
||
|
|
+ // will be removed.
|
||
|
|
+ parsing_printf("\taddress %lx in a different region from the funcion entry at %lx, skip parsing\n", curAddr, func->addr());
|
||
|
|
+ continue;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
InstructionDecoder dec(bufferBegin,size,frame.codereg->getArch());
|
||
|
|
|
||
|
|
if (!ahPtr)
|