long network segment call stack can fail
Chagin Dmitry
dchagin at freebsd.org
Sat Jan 9 07:58:49 UTC 2016
On Fri, Jan 08, 2016 at 07:37:37PM -0800, Gleb Smirnoff wrote:
> On Wed, Jan 06, 2016 at 12:50:52PM -0800, Adrian Chadd wrote:
> A> hah, that's very pretty. The downside of a completely direct-dispatch
> A> network stack. :)
>
> The stack is big, but shouldn't eat 4 pages anyway. Back in the netgraph
yeha, exctly
> hacking times, we used to have stack exhaustion with much longer backtraces.
>
> I expect that somewhere on the list there something huge on stack.
>
> I assume Dmitry runs with -O0, this is compile that exposes stack
> exhaustion first. Did I guess it right, Dmitry?
>
no, -O2 here
--
Have fun!
chd
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