[techtalk] gcc versions and bus error

[Jeff Dike]

> Hm, maybe this should be a FAQ.  Both indicate that youre accessig
> memory that you shouldn't.

A segfault does.

I did a quick check of the kernel (core kernel + arch/i386), and found two 
places where processes get SIGBUS:
	swapping out a process failing to free any memory (swap_out in mm/vmscan.c)
	the page fault handler failing to handle a fault because it's out of memory 
(do_page_fault in arch/i386/mm/fault.c).

Other unixes probably do things differently.

				Jeff



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