[Webkit-unassigned] [Bug 154822] [ARM] REGRESSION(197226): Removing the on demand executable allocator made 14 tests crash with OOM

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154822

--- Comment #5 from Csaba Osztrogonác <ossy at webkit.org> ---
(In reply to comment #4)
> Are these just timing out?

No, out of memory because of fixed 16Mb sized VM pool.

I already added my detailed investigation:

(In reply to comment #3)
> Increasing jitMemoryReservationSize to 32Mb fixes the OOM issue with 
> the ARMAssembler (ARM instruction set) and we don't get new crashes.
> 
> But with ARMv7Assembler (Thumb2 instruction set) we get ~150 crashes if
> we increase the JIT memory above 16Mb (maximum jump with 24 bit address!)
> 
> Zoltán fixed a similar bug in ARMv7Assembler 3 years ago:
> http://trac.webkit.org/changeset/146396

It's easy to fix this bug with ARMAssembler with increasing
jitMemoryReservationSize. But it would cause more problems
with ARMv7Assembler.

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