Re: `cat /dev/io` leads to system lockup.

2002-12-21 Thread Sean Kelly
On Fri, Dec 20, 2002 at 07:24:15PM +1100, Bruce Evans wrote: On Fri, 20 Dec 2002, Sean Kelly wrote: On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would normally be

Re: `cat /dev/io` leads to system lockup.

2002-12-20 Thread Sean Kelly
On Thu, Dec 19, 2002 at 11:35:01PM -0800, Nate Lawson wrote: On Fri, 20 Dec 2002, Sean Kelly wrote: On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would normally be

Re: `cat /dev/io` leads to system lockup.

2002-12-20 Thread Bruce Evans
On Fri, 20 Dec 2002, Sean Kelly wrote: On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would normally be doing, is it really something that should bring the system down? No.

Re: `cat /dev/io` leads to system lockup.

2002-12-20 Thread Scott Long
Sean Kelly wrote: On Thu, Dec 19, 2002 at 11:35:01PM -0800, Nate Lawson wrote: On Fri, 20 Dec 2002, Sean Kelly wrote: On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would

Re: `cat /dev/io` leads to system lockup.

2002-12-20 Thread Bruce Evans
On Fri, 20 Dec 2002, Scott Long wrote: Many peripheral hardware device do not like having their registers blindly read (it's quite common for a read operation on a register to signal an ASIC that it's ok to do a certain action) and will respond with nasty things like interrupt storms, endless

`cat /dev/io` leads to system lockup.

2002-12-19 Thread Sean Kelly
On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would normally be doing, is it really something that should bring the system down? -- Sean Kelly | PGP KeyID: D2E5E296

Re: `cat /dev/io` leads to system lockup.

2002-12-19 Thread Nate Lawson
On Fri, 20 Dec 2002, Sean Kelly wrote: On my 5.0-CURRENT kernel built 45 minutes ago, I can bring my system to its knees by doing # cat /dev/io While I understand that this isn't exactly something one would normally be doing, is it really something that should bring the system down?