Re: [patch] 'coredump crash' fixed

Linus Torvalds (torvalds@transmeta.com)
Wed, 27 Jan 1999 10:45:22 -0800 (PST)

On Wed, 27 Jan 1999, MOLNAR Ingo wrote:
>
> it was a very subtle bug and has nothing to do with coredumps at all, but
> it's very rare and the invalid coredump ELF layout accidentally triggered
> the bug.

Good hunting. Oops.

> - unsigned long last = (end & PGDIR_MASK) + PGDIR_SIZE;
> + unsigned long last = ((end-1) & PGDIR_MASK) + PGDIR_SIZE;

When I originally wrote it, I wrote it as

(end + PGDIR_SIZE - 1) & PGDIR_MASK

but I must have broke it for some really stupid reason.

Thanks,
Linus

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