Comment #4 on issue 2067 by [email protected]: SIGILL in v8 on android ics http://code.google.com/p/v8/issues/detail?id=2067
If you are building the browser yourself, then the crash is most likely caused by incorrect compilation flags that enable a feature not supported by the hardware. This would explain why you are getting the illegal instruction signal.
Changing max_semispace_size is probably changing the code path taken by V8 and thus masking the failure.
Could you try to reproduce the crash with the original pre-installed browser?
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