SEGV xs/sources/xsProxy.c:506 in fxProxyGetPrototype #750
Labels
confirmed
issue reported has been reproduced
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Moddable-XS revision
Commit: db8f973
Version: 11.5.0 32 4
Build environment
Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)
Build steps
Test case
Execution & Output
$ ./moddable/build/bin/lin/debug/xst poc.js ASAN:DEADLYSIGNAL ================================================================= ==68595==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000009 (pc 0x55aceefcfbc1 bp 0x7ffebf0ad710 sp 0x7ffebf0ad6c0 T0) ==68595==The signal is caused by a READ memory access. ==68595==Hint: address points to the zero page. #0 0x55aceefcfbc0 in fxProxyGetPrototype /root/moddable/xs/sources/xsProxy.c:506 #1 0x55acef001f0f in fxRunID /root/moddable/xs/sources/xsRun.c:842 #2 0x55acef06cc27 in fxRunScript /root/moddable/xs/sources/xsRun.c:4766 #3 0x55acef27e90a in fxRunProgramFile /root/moddable/xs/tools/xst.c:1387 #4 0x55aceeba54c7 in main /root/moddable/xs/tools/xst.c:281 #5 0x7f00319aabf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6) #6 0x55aceeba70c9 in _start (/root/moddable/build/bin/lin/debug/xst+0x950c9) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /root/moddable/xs/sources/xsProxy.c:506 in fxProxyGetPrototype ==68595==ABORTINGCredits: Found by OWL337 team.
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