Re: [RFC PATCH v2 0/2] Randomization of address chosen by mmap.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Mar 27, 2018 at 04:51:08PM +0300, Ilya Smith wrote:
> > /dev/[u]random is not sufficient?
> 
> Using /dev/[u]random makes 3 syscalls - open, read, close. This is a performance
> issue.

You may want to take a look at the getrandom(2) system call, which is
the recommended way getting secure random numbers from the kernel.

> > Well, I am pretty sure userspace can implement proper free ranges
> > tracking…
> 
> I think we need to know what libc developers will say on implementing ASLR in 
> user-mode. I am pretty sure they will say ‘nether’ or ‘some-day’. And problem 
> of ASLR will stay forever.

Why can't you send patches to the libc developers?

Regards,

						- Ted
--
To unsubscribe from this list: send the line "unsubscribe linux-s390" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Kernel Development]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Info]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Linux Media]     [Device Mapper]

  Powered by Linux