svn commit: r326809 - head/sys/dev/cardbus

[Eugene Grosbein]

14.12.2017 1:08, Alexey Dokuchaev пишет:
> On Thu, Dec 14, 2017 at 12:48:17AM +0700, Eugene Grosbein wrote:
>> ...
>> I don't understand why you want to backout that. It changed nothing for
>> amd64.  An i386 is still vulnerable to double faults just because of a
>> network packet processing path can overflow kstack for the GENERIC kernel.
> 
> The reason (or shall I say concern) was raised by kib@, as quoted:
> 
>> Plain workstation use, like X11+browser+editor+some other programs easily
>> allocates 1000+ threads.  It was still possible to use 32bit x86 for that,
>> of course in max memory config without PAE, and without ZFS.  Add some
>> load that involves network, for instance torrent client, to establish the
>> pressure on KVA.
>> I am almost sure that users would get troubles now.
> 
> I'm a plain workstation user with X11+browser+torrent+quake2+you-name-it
> apps, PAE-less, ZFS-less, and I don't want to get troubles due to r326758.

Add kern.kstack_size=2 to /boot/loader.conf of your workstation now
and you will notice no difference.