Re: [PATCH] posix-timers: fix oops in clock_nanosleep() withCLOCK_MONOTONIC_RAW

[Andrew Morton]

On Tue, 04 Aug 2009 16:41:33 +0900 Hiroshi Shimamoto <h-shimamoto@xxxxxxxxxxxxx> wrote:

> Userspace program is like this;
> 
> #include <time.h>
> 
> int main(void)
> {
> 	struct timespec ts;
> 
> 	ts.tv_sec = 1;
> 	ts.tv_nsec = 0;
> 
> 	return clock_nanosleep(4, 0, &ts, NULL);
> }
> 
> and it will cause oops;
> 
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000001

Well that's not very good.

How far back does this go?  posix-timers.c hasn't changed in several
kernel versions.

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