Re: kernel/3711: arc4random in kernel init causes uninitialised use of timeout_add and panic w/ DIAGNOSTIC

[Michael Shalayeff <mickey@lucifier.net>]

Making, drinking tea and reading an opus magnum from Matthew Gream:
> I ported a driver from netbsd that did this; is there a more acceptable way
> to obtain random() data in methods called from pci attach ?

which driver?
why do you need strong random there that early anyway?

cu

> -----Original Message-----
> From: Ted Unangst [mailto:tedu@zeitbombe.org] 
> Sent: 13 March 2004 19:39
> To: Matthew
> Cc: bugs@cvs.openbsd.org
> Subject: Re: kernel/3711: arc4random in kernel init causes uninitialised use
> of timeout_add and panic w/ DIAGNOSTIC
> 
> On Sat, 13 Mar 2004, Matthew wrote:
> 
> >         Using arc4random before randomattach, e.g. from a PCI attach,
> results in arc4maybeinit being 
> > 	called with arc4random_initialized not set, resulting in timeout_add
> on uninitialised 
> > 	arc4_timeout, which panics in DIAGNOSTIC. Found in 3.3, but still
> present in HEAD.
> > >How-To-Repeat:
> >         choose good pci_attach and use arc4random from dev/rndvar.h &
> dev/rnd.c
> >         build DIAGNOSTIC kernel
> >         reboot and get nice panic from kern_timeout.c:163.
> 
> why are you doing this?
> 
> 
> --
> desire is not an occupation
> 


-- 
    paranoic mickey       (my employers have changed but, the name has remained)