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SEGV src/mjs_builtin.c:105 in mjs_get_mjs #214

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hope-fly opened this issue Dec 31, 2021 · 0 comments
Open

SEGV src/mjs_builtin.c:105 in mjs_get_mjs #214

hope-fly opened this issue Dec 31, 2021 · 0 comments

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@hope-fly
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mJS revision

Commit: b1b6eac

Build platform

Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)

Build steps
vim Makefile
DOCKER_GCC=gcc
$(DOCKER_GCC) $(CFLAGS) $(TOP_MJS_SOURCES) $(TOP_COMMON_SOURCES) -o $(PROG)
# save the makefile then make
make
Test case
poc.js

print--(+"");
print(+"\n\n");

Execution steps & Output
$ ./mjs/build/mjs poc.js
ASAN:DEADLYSIGNAL
=================================================================
==35620==ERROR: AddressSanitizer: SEGV on unknown address 0x55a10287477c (pc 0x55a1028747ef bp 0x000000000034 sp 0x7ffdf2572288 T0)
==35620==The signal is caused by a WRITE memory access.
    #0 0x55a1028747ee in mjs_get_mjs src/mjs_builtin.c:105
    #1 0x55a10288f244 in mjs_execute src/mjs_exec.c:853
    #2 0x55a102898a05 in mjs_exec_internal src/mjs_exec.c:1073
    #3 0x55a102898a05 in mjs_exec_file src/mjs_exec.c:1096
    #4 0x55a102855909 in main src/mjs_main.c:47
    #5 0x7fba02de9b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #6 0x55a102856449 in _start (/usr/local/bin/mjs+0xe449)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/mjs_builtin.c:105 in mjs_get_mjs
==35620==ABORTING
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