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Bug 975182 - OdinMonkey: when triggering operation callback, leave PROT_READ|PROT_WRITE (r=benj)

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This commit is contained in:
Luke Wagner 2014-02-21 11:05:36 -06:00
parent 4eed36705e
commit 9bb539a959
2 changed files with 20 additions and 2 deletions
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18
js/src/jit-test/tests/asm.js/testBug975182.js Normal file
View File

@ -0,0 +1,18 @@
Function("\
g = (function(t,foreign){\
\"use asm\";\
var ff = foreign.ff;\
function f() {\
+ff()\
}\
return f\
})(this, {\
ff: arguments.callee\
}, ArrayBuffer(4096))\
")()
function m(f) {
for (var j = 0; j < 6000; ++j) {
f();
}
}
m(g);

4
js/src/jit/AsmJSSignalHandlers.cpp
View File

@ -1031,10 +1031,10 @@ js::TriggerOperationCallbackForAsmJSCode(JSRuntime *rt)
#if defined(XP_WIN)
DWORD oldProtect;
if (!VirtualProtect(module.codeBase(), module.functionBytes(), PAGE_NOACCESS, &oldProtect))
if (!VirtualProtect(module.codeBase(), module.functionBytes(), PAGE_READWRITE, &oldProtect))
MOZ_CRASH();
#else // assume Unix
if (mprotect(module.codeBase(), module.functionBytes(), PROT_NONE))
if (mprotect(module.codeBase(), module.functionBytes(), PROT_READ|PROT_WRITE))
MOZ_CRASH();
#endif
}