[Webkit-unassigned] [Bug 42756] Crash in privateCompileCTIMachineTrampolines() on Intel Atom D510 processor

Fri Aug 20 05:49:51 PDT 2010

https://bugs.webkit.org/show_bug.cgi?id=42756

--- Comment #4 from Adrien Nader <camaradetux at gmail.com>  2010-08-20 05:49:50 PST ---
Here are the results after a few builds.

First, building on the laptop machine (the one running it) did *NOT* solve the problem.
Then, of course, --disable-jit solved it.
Finally, --disable-optimizations didn't solve it.

Also, the 'jsc-1' binary, ran without any argument, crashes immediately. As I said, the build machine is headless so I can't really test webkit-gtk on it. However, trying jsc-1 on the build machine works without problem.
(actually, I tried to create a web_view and load_uri a page, without creating a windows nor displaying anything and I got the expected "cannot open display" warning but no segfault)

The backtrace for jsc-1 on the laptop is:
#0  0x00007ffff50a4e51 in memcpy () from /lib64/libc.so.6
#1  0x00000000004d988f in JSC::JIT::privateCompileCTIMachineTrampolines(WTF::RefPtr<JSC::ExecutablePool>*, JSC::JSGlobalData*, JSC::TrampolineStructure*) ()
#2  0x00000000004f6570 in JSC::JIT::compileCTIMachineTrampolines(JSC::JSGlobalData*, WTF::RefPtr<JSC::ExecutablePool>*, JSC::TrampolineStructure*) ()
#3  0x000000000043f29c in JSC::JSGlobalData::JSGlobalData(JSC::JSGlobalData::GlobalDataType, JSC::ThreadStackType) ()
#4  0x000000000043f663 in JSC::JSGlobalData::create(JSC::ThreadStackType) ()
#5  0x0000000000408a77 in main ()

I'm also going to see if it can be reproduced in qemu, and if not, I can probably give a shell access if someone wants to try to debug and can't reproduce (unfortunately, not before a few days).

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