https://sourceware.org/bugzilla/show_bug.cgi?id=23075
Bug ID: 23075
Summary: Stack Exhaustion in resolve_expression when address
sanitizer of GCC is enabled
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: mudongliangabcd at gmail dot com
Target Milestone: ---
Created attachment 10953
--> https://sourceware.org/bugzilla/attachment.cgi?id=10953&action=edit
PoC to trigger stack exhaustion
Trigger Method:
```
https://ftp.gnu.org/gnu/binutils/binutils-2.30.tar.gz
tar -xvf binutils-2.30.tar.gz
cd binutils-2.30/
CFLAGS="-O2 -g -fstack-protector-all -fsanitize=address" LDFLAGS="-ldl"
./configure --enable-shared=no --enable-static=yes
make
cd gas
gdb ./as-new
(gdb) r poc.segv
```
Result of Address Sanitizer:
```
=================================================================
==11406==ERROR: AddressSanitizer: stack-overflow on address 0x7ffda8ea3f90 (pc
0x55c063bee4d4 bp 0x7ffda8ea3f90 sp 0x7ffda8ea3f70 T0)
#0 0x55c063bee4d3 in snapshot_symbol
/home/mdl/Downloads/binutils-2.30-test/gas/symbols.c:1521
#1 0x55c063bbd050 in resolve_expression
/home/mdl/Downloads/binutils-2.30-test/gas/expr.c:2127
#2 0x55c063beea6d in snapshot_symbol
/home/mdl/Downloads/binutils-2.30-test/gas/symbols.c:1543
......
#247 0x55c063bbd050 in resolve_expression
/home/mdl/Downloads/binutils-2.30-test/gas/expr.c:2127
#248 0x55c063beea6d in snapshot_symbol
/home/mdl/Downloads/binutils-2.30-test/gas/symbols.c:1543
#249 0x55c063bbd050 in resolve_expression
/home/mdl/Downloads/binutils-2.30-test/gas/expr.c:2127
#250 0x55c063beea6d in snapshot_symbol
/home/mdl/Downloads/binutils-2.30-test/gas/symbols.c:1543
SUMMARY: AddressSanitizer: stack-overflow
/home/mdl/Downloads/binutils-2.30-test/gas/symbols.c:1521 in snapshot_symbol
==11406==ABORTING
```
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