On 9/10/18 1:20 PM, John Baldwin wrote: > On 9/8/18 1:44 PM, Michael Butler wrote: >> On 9/8/18 3:43 PM, Konstantin Belousov wrote: >>> On Sat, Sep 08, 2018 at 02:07:41PM -0400, Michael Butler wrote: >>>> On 8/31/18 1:28 AM, Konstantin Belousov wrote: >>>>> On Fri, Aug 31, 2018 at 12:21:02AM -0400, Michael Butler wrote: >>>> >>>> [ .. snip .. ] >>>> >>>>>> I see another problem after using Ian's workaround of moving the #ifdef >>>>>> SMP; it seems I now run out of kernel stack on an i386 (Pentium-III) >>>>>> machine with only 512MB of RAM: >>>>>> >>>>>> Aug 29 23:29:19 sarah kernel: vm_thread_new: kstack allocation failed >>>>>> Aug 29 23:29:26 sarah kernel: vm_thread_new: kstack allocation failed >>>>>> Aug 29 23:29:30 sarah kernel: vm_thread_new: kstack allocation failed >>>>>> Aug 29 23:29:38 sarah kernel: vm_thread_new: kstack allocation failed >>>>>> Aug 29 23:29:38 sarah kernel: vm_thread_new: kstack allocation failed >>>>>> Aug 29 23:29:40 sarah kernel: vm_thread_new: kstack allocation failed >>>>> >>>>> What is the kernel revision for "now". What was the previous revision >>>>> where the kstack allocation failures did not happen. >>>>> >>>>> Also, what is the workload ? >>>> >>>> Sorry for the delay. Any version at or after SVN r338360 would either a) >>>> not boot at all or b) crash shortly after boot with a swarm of messages >>>> as above. It was stable before that. >>>> >>>> Unfortunately, this machine is remote and, being as old as it is, has no >>>> remote console facility. 'nextboot' has been my savior ;-) >>>> >>>> It is a 700MHz Pentium-III with 512MB of RAM and has 3 used interfaces, >>>> local ethernet (FXP), GIF for an IPv6 tunnel to HE and TAP for an >>>> OpenVPN endpoint. It has IPFW compiled into the kernel and acts as a >>>> router/firewall with few actual applications running. >>>> >>>> As another data point, I manually reversed both SVN r338360 and r338415 >>>> (a related change) and it is now stable running at SVN r338520, >>> >>> It is very unprobable. I do not see how could r338360 affect KVA allocation. >>> Double-check that you booted right kernels. >>> >> >> FreeBSD sarah.protected-networks.net 12.0-ALPHA5 FreeBSD 12.0-ALPHA5 #14 >> r338520M: Thu Sep 6 21:35:31 EDT 2018 >> >> 'svn diff' reports the only changes being the two reversals I noted above, > > Can you get the output of 'x num_io_irqs' at the DDB prompt after the > panic? > SVN r338725 fixed this - thanks! :-) imbReceived on Mon Sep 17 2018 - 16:32:19 UTC
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