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* [Bug demangler/98889] New: stack overflow in cxxfilt, peek, rust-demangle.c:85
@ 2021-01-29 12:08 featherrain26 at gmail dot com
2022-01-22 17:55 ` [Bug demangler/98889] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: featherrain26 at gmail dot com @ 2021-01-29 12:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98889
Bug ID: 98889
Summary: stack overflow in cxxfilt, peek, rust-demangle.c:85
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: demangler
Assignee: unassigned at gcc dot gnu.org
Reporter: featherrain26 at gmail dot com
Target Milestone: ---
Created attachment 50085
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50085&action=edit
POC
Hi, there.
There is a stack overflow in the newest version(2eda57ef) of cxxfilt,
rust-demangle.c:85 related to path demangling, which directly causes a
segmentation fault.
To reproduce, run
cxxfilt < poc
Here is the trace reported by ASAN:
ASAN:SIGSEGV
=================================================================
==52498==ERROR: AddressSanitizer: stack-overflow on address 0x7ffeeb551ff8 (pc
0x0000009768c0 bp 0x7ffeebd4f8b0 sp 0x7ffeeb551ff8 T0)
#0 0x9768bf in peek ../../libiberty/rust-demangle.c:85
#1 0x9768bf in next ../../libiberty/rust-demangle.c:105
#2 0x9768bf in demangle_path ../../libiberty/rust-demangle.c:674
SUMMARY: AddressSanitizer: stack-overflow ../../libiberty/rust-demangle.c:85
peek
==52498==ABORTING
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug demangler/98889] stack overflow in cxxfilt, peek, rust-demangle.c:85
2021-01-29 12:08 [Bug demangler/98889] New: stack overflow in cxxfilt, peek, rust-demangle.c:85 featherrain26 at gmail dot com
@ 2022-01-22 17:55 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-01-22 17:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98889
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 99935.
*** This bug has been marked as a duplicate of bug 99935 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-01-29 12:08 [Bug demangler/98889] New: stack overflow in cxxfilt, peek, rust-demangle.c:85 featherrain26 at gmail dot com
2022-01-22 17:55 ` [Bug demangler/98889] " pinskia at gcc dot gnu.org
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