https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102130
Bug ID: 102130
Summary: [c++filt] Stack overflow in demangle_path
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: demangler
Assignee: unassigned at gcc dot gnu.org
Reporter: irfanariq at kaist dot ac.kr
Target Milestone: ---
Created attachment 51378
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51378&action=edit
poc and full stack trace
Hello,
We are currently working on fuzz testing feature, and we found a crash on
c++filt.
The stack traces are as follow:
==617==ERROR: AddressSanitizer: stack-overflow on address 0x7fffe1fa7ff8 (pc
0x555911cd5385 bp 0x7fffe1fa8140 sp 0x7fffe1fa8000 T0)
#0 0x555911cd5384 in demangle_path rust-demangle.c:674
#1 0x555911cd5e48 in demangle_path rust-demangle.c:774
#2 0x555911cd56a1 in demangle_path rust-demangle.c:696
#3 0x555911cd5e48 in demangle_path rust-demangle.c:774
#4 0x555911cd56a1 in demangle_path rust-demangle.c:696
...
#247 0x555911cd5e48 in demangle_path rust-demangle.c:774
#248 0x555911cd56a1 in demangle_path rust-demangle.c:696
#249 0x555911cd5e48 in demangle_path rust-demangle.c:774
#250 0x555911cd56a1 in demangle_path rust-demangle.c:696
We also attach the full stack trace in the attachment.
**Step to reproduce**
We configured c++filt using
$ CFLAGS="-g -O0 -fsanitize=address" ./configure --disable-shared
--enable-targets=all
,and built it using
$ make -j10; make install
,and run it with:
$ ./c++filt @<input file>
The input file is in the attachment.
**Environment**
- OS: Ubuntu 18.04.5 LTS
- GCC version: gcc 7.5.0
- binutils version: commit (7de7786bb7db5159fc8a7bfa3df72381ff16a38c) of master
branch on sourceware git
(https://sourceware.org/git/?p=binutils-gdb.git;a=tree;h=7de7786bb7db5159fc8a7bfa3df72381ff16a38c;hb=7de7786bb7db5159fc8a7bfa3df72381ff16a38c)
Thank you.
