424555 - Valgrind - Invalid write running debug js shell with no arguments (64bit)

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Bob Clary [:bc] (inactive)]

CentOS 5 64

valgrind --tool=memcheck ./js

vex amd64->IR: unhandled instruction bytes: 0x6 0xA1 0xEF 0xFF
==24450== Warning: client switching stacks?  SP change: 0x7FEFFF230 --> 0xFEFFF208
==24450==          to suppress, use: --max-stackframe=40 or greater
==24450== Invalid write of size 4
==24450==    at 0x509CE3: readline (in /work/mozilla/builds/1.9.0/mozilla/js/src/Linux_All_DBG.OBJ/js)
==24450==  Address 0xC4FC65 is not stack'd, malloc'd or (recently) free'd
==24450== 
==24450== Process terminating with default action of signal 11 (SIGSEGV)
==24450==  Access not within mapped region at address 0xC4FC65
==24450==    at 0x509CE3: readline (in /work/mozilla/builds/1.9.0/mozilla/js/src/Linux_All_DBG.OBJ/js)
==24450== 
==24450== Invalid write of size 8
==24450==    at 0x48022D8: _vgnU_freeres (vg_preloaded.c:56)
==24450==  Address 0xFEFFF200 is on thread 1's stack
=

doesn't happen if you add -f foo.js for a simple print script.

Comment 1

[Bob Clary [:bc] (inactive)]

appears to be 64 bit only.

Comment 2

[Bob Clary [:bc] (inactive)]

invalid. I had copied a tree from one machine to to another and didn't realize that make Makefile.ref clean in js/src *didn't* clean editline. So there were old 32bit editline binaries getting linked.