2.6.23: random segfaults

[Manuel L. <ma...@ro...>]

Greetings,

With 2.6.23 my board(s) are again experiencing random segfaults and
pipe failures (compilejobs randomly abort with bash segfaulting
and/or gcc/make stop with "too many commandline options" errors, ...)
I tracked it to these two commits; reverting both stabilizes the system
again:

sh: Reclaim beginning of P3 space for vmalloc area
 http://git.kernel.org/?p=linux/kernel/git/lethal/sh-2.6.git;a=commit;h=f0b859e3d63a07995f0db294864c2f3c9228f1e4

sh: Add kmap_coherent()/kunmap_coherent() interface for SH-4.
 http://git.kernel.org/?p=linux/kernel/git/lethal/sh-2.6.git;a=commit;h=8cf1a74305688c85fc8d23ab7432a0c447ee6413

Thanks,
	Manuel Lauss