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Re: kern/51325: "netstat -ia" causes infinite loop

On Jul 14, 11:06am, (Ryota Ozaki) wrote:
-- Subject: Re: kern/51325: "netstat -ia" causes infinite loop

| On Wed, Jul 13, 2016 at 6:00 PM, matthew green <> wrote:
| > the right way to fix this would be to convert that part
| > of netstat to use sysctl on live kernels.
| christos@ has done it? :)

It is close. I will try to finish it in the next few days. I need to handle
the multicast stuff.

| >  then you can
| > change the in-kernel version more sanely without breaking
| > apps.  sure, a deaad kernel netstat user will have to
| > match kernel/user versions but that's always the case.
| If it's allowed, I want to do so because in this case we
| need to do some tricky workaround to make ifaddr lists
| workable for psz/psref maybe introducing some overhead.

Yes, it should be allowed. The policy should be that runtime support
via sysctl retains compatiibility across kernel bumps, but kmem grovelling
needs a matching kernel and userland binary so that we don't need to jump
through hoops to change kernel data structures.


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