On Wed, 14 May 2014, Matthias Pitzl wrote:
> On our server running with OpenBSD 5.5 calling netstat sometimes lead to
> an uvm_fault in sysctl_file(). I can trigger the problem by running some
> of our tests which create/delete a lot of files, open/close sockets etc.
> and call netstat -anv.
>
> Attached file contains dmesg, trace and ps output.
...
> ddb{3}> trace
> sysctl_file() at sysctl_file+0x180
> kern_sysctl() at kern_sysctl+0x686
You don't happen to have the output of "show reg", do you?
Regardless, this is a locking problem in the kernel's sysctl logic. A
previous attempt to fix this created other locking issues and was
reverted. I've almost got exit1() cleaned up enough that we might be able
to take a second stab at this...
Philip Guenther
