[Webkit-unassigned] [Bug 159880] [GTK] JSC JIT Broken on ARMv7 Traditional (without Thumb2)

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jul 19 03:10:34 PDT 2016


https://bugs.webkit.org/show_bug.cgi?id=159880

--- Comment #3 from Csaba Osztrogonác <ossy at webkit.org> ---
(In reply to comment #2)
> (In reply to comment #1)
> > Not sure if this only affects the GTK+ port or EFL/JSCOnly are also affected?
> 
> JSCOnly affected as well. Crashing with SIGILL, Illegal instruction. Also I
> cannot obtain anything useful from the backtrace..
> 
> Core was generated by `./jsc'.
> Program terminated with signal SIGILL, Illegal instruction.
> #0  0xb62049ba in JSC::slow_path_enter (exec=0xb6fb5a28, pc=0xb6fb5be0) at
> ../../Source/JavaScriptCore/runtime/CommonSlowPaths.cpp:592
> 592     ../../Source/JavaScriptCore/runtime/CommonSlowPaths.cpp: No such
> file or directory.
> [Current thread is 1 (Thread 0xb2d6e220 (LWP 29498))]
> (gdb) bt full
> #0  0xb62049ba in JSC::slow_path_enter (exec=0xb6fb5a28, pc=0xb6fb5be0) at
> ../../Source/JavaScriptCore/runtime/CommonSlowPaths.cpp:592
>         vm = @0xb6fb5a28: <error reading variable>
>         tracer = {<No data fields>}
>         codeBlock = 0xb6fb5be0
> #1  0xb60a347c in llint_entry () at
> ../../Source/JavaScriptCore/runtime/Butterfly.h:58
> No symbol table info available.
> #2  0x00000000 in ?? ()
> No symbol table info available.
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Did you get it on ARMv7 hardware? 
Could you provide a disassembly near this illegal instruction?

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