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? -- John BaldwinReceived on Mon Sep 10 2018 - 15:20:14 UTC
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