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cesanta / mjs

Embedded JavaScript engine for C/C++
https://mongoose-os.com
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SEGV src/mjs_exec.c:1155 in mjs_apply #202

Open hope-fly opened 2 years ago

hope-fly commented 2 years ago
mJS revision

Commit: b1b6eac

Version:

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 


```javascript
((6) - Object.apply).apply()
```
Execution steps & Output
$ ./mjs/build/mjs poc.js
ASAN:DEADLYSIGNAL
=================================================================
==63672==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x558c2cbd497e bp 0x615000000080 sp 0x7ffc787d6e20 T0)
==63672==The signal is caused by a READ memory access.
==63672==Hint: address points to the zero page.
    #0 0x558c2cbd497d in mjs_apply src/mjs_exec.c:1155
    #1 0x558c2cbd58d4 in mjs_apply_ src/mjs_exec.c:515
    #2 0x558c2cbc9244 in mjs_execute src/mjs_exec.c:853
    #3 0x558c2cbd2a05 in mjs_exec_internal src/mjs_exec.c:1073
    #4 0x558c2cbd2a05 in mjs_exec_file src/mjs_exec.c:1096
    #5 0x558c2cb8f909 in main src/mjs_main.c:47
    #6 0x7ff8e5d7cb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #7 0x558c2cb90449 in _start (/usr/local/bin/mjs+0xe449)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/mjs_exec.c:1155 in mjs_apply
==63672==ABORTING