[BUG] stack-overflow in src/parser.c
Ilia Kashintsev <[email protected]> Wed, 18 Mar 2026 14:12:02 +0300
| Newsgroups | org.kernel.vger.dash |
|---|---|
| Message-ID | <CAF6ebR5pJm63sQ41rvD4jP511BrnY9A84+F4c-cNt=-ejaaonA@mail.gmail.com> |
Hello maintainers!
There is a stack-overflow caused by a huge number of opening parentheses.
Sanitizer output:
# AddressSanitizer:DEADLYSIGNAL
=================================================================
==1393234==ERROR: AddressSanitizer: stack-overflow on address
0x7fff8ea6fff8 (pc 0x5c982afe24b1 bp 0x7fff8ea70060 sp 0x7fff8ea6ffe0
T0)
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#230 0x5c982affa44d in command /orig_to_send/dash/src/parser.c:475:18
#231 0x5c982aff8e9c in pipeline /orig_to_send/dash/src/parser.c:289:7
#232 0x5c982aff881c in andor /orig_to_send/dash/src/parser.c:253:7
#233 0x5c982aff31c8 in list /orig_to_send/dash/src/parser.c:202:8
#234 0x5c982affa44d in command /orig_to_send/dash/src/parser.c:475:18
#235 0x5c982aff8e9c in pipeline /orig_to_send/dash/src/parser.c:289:7
#236 0x5c982aff881c in andor /orig_to_send/dash/src/parser.c:253:7
#237 0x5c982aff31c8 in list /orig_to_send/dash/src/parser.c:202:8
#238 0x5c982affa44d in command /orig_to_send/dash/src/parser.c:475:18
#239 0x5c982aff8e9c in pipeline /orig_to_send/dash/src/parser.c:289:7
#240 0x5c982aff881c in andor /orig_to_send/dash/src/parser.c:253:7
#241 0x5c982aff31c8 in list /orig_to_send/dash/src/parser.c:202:8
#242 0x5c982affa44d in command /orig_to_send/dash/src/parser.c:475:18
#243 0x5c982aff8e9c in pipeline /orig_to_send/dash/src/parser.c:289:7
#244 0x5c982aff881c in andor /orig_to_send/dash/src/parser.c:253:7
#245 0x5c982aff31c8 in list /orig_to_send/dash/src/parser.c:202:8
#246 0x5c982affa44d in command /orig_to_send/dash/src/parser.c:475:18
SUMMARY: AddressSanitizer: stack-overflow
/orig_to_send/dash/src/input.c:227:14 in __pgetc
==1393234==ABORTING
The stacktrace itself is not always consistent, f.e. sometimes the
crash occurs upon entering command() on line 321 or inside of
xxreadtoken() on line 810.
Steps to reproduce:
export CC=clang
export CFLAGS=" -g -fsanitize=address "
./autogen.sh
./configure
make
#80000 might be excessive, even 10000 is enough for ulimit -s 8192
printf '%0.s(' {1..80000} > brackets.txt
./src/dash -i brackets.txt