Date: Mon, 08 Feb 2021 22:25:01 -0800 From: Alastair Hogge <agh@riseup.net> To: Hans Petter Selasky <hps@selasky.org> Cc: Emmanuel Vadot <manu@bidouilliste.com>, Steve Kargl <sgk@troutmask.apl.washington.edu>, Andriy Gapon <avg@freebsd.org>, freebsd-current@freebsd.org, freebsd-x11@freebsd.org Subject: Re: panic in drm or vt or deadlock on mutex or ... Message-ID: <952bac7c2d593e175c0733bb542eb0ff@riseup.net> In-Reply-To: <fea61694-367d-7161-e071-4a8f77810a68@selasky.org> References: <20210203050828.GA21823@troutmask.apl.washington.edu> <4581b83f-e048-fb8b-edfe-44332d3dc460@FreeBSD.org> <20210203160324.GA23963@troutmask.apl.washington.edu> <20210204105029.5fc11bed5df0e4283f983fbf@bidouilliste.com> <36a5927f9992ec828a0fe1e9bf480ce3@riseup.net> <fea61694-367d-7161-e071-4a8f77810a68@selasky.org>
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On 2021-02-08 21:01, Hans Petter Selasky wrote: > On 2/8/21 1:53 PM, Alastair Hogge wrote: >> Boot to multi-user; login (getty): >> $ doas kldload /boot/modules/amdgpu.ko >> $ sysctl >> [panic] >> >> ..is a guaranteed way to panic my system. > > Hi, > > Maybe you could do a hack and edit the sysctl source code: > > 1) print the sysctl before it is queried. > 2) sleep 1 second between print and query. > > Should be easy to nail this down! This is all I am able to catch via the ssh session: vm.uma.sackhole.size: 32 vm.uma.hostcache.stats.xdomain: 0 vm.uma.hostcache.stats.fails: 0 vm.uma.hostcache.stats.frees: 0 vm.uma.hostcache.stats.allocs: 0 vm.uma.hostcache.stats.current: 0 vm.uma.hostcache.domain.0.wss: 0 vm.uma.hostcache.domain.0.imin: 0 vm.uma.hostcache.domain.0.imax: 0 vm.uma.hostcache.domain.0.nitems: 0 vm.uma.hostcache.limit.bucket_max: 7680 vm.uma.hostcache.limit.sleeps: 0 vm.uma.hostcache.limit.sleepers: 0 vm.uma.hostcache.limit.max_items: 15360 vm.uma.hostcache.limit.items: 0 vm.uma.hostcache.keg.domain.0.free_items: 0 vm.uma.hostcache.keg.domain.0.pages: 0 vm.uma.hostcache.keg.efficiency: 98 vm.uma.hostcache.keg.reserve: 0 vm.uma.hostcache.keg.align: 7 vm.uma.hostcache.keg.ipers: 42 vm.uma.hostcache.keg.ppera: 1 vm.uma.hostcache.keg.rsize: 96 vm.uma.hostcache.keg.name: hostcache vm.uma.hostcache.bucket_size_max: 120 vm.uma.hostcache.bucket_size: 120 vm.uma.hostcache.flags: 0x43010000<TRASH,LIMIT,CTORDTOR,FIRSTTOUCH> vm.uma.hostcache.size: 96 vm.uma.syncache.stats.xdomain: 0 vm.uma.syncache.stats.fails: 0 vm.uma.syncache.stats.frees: 1 vm.uma.syncache.stats.allocs: 1 vm.uma.syncache.stats.current: 0 vm.uma.syncache.domain.0.wss: 3 vm.uma.syncache.domain.0.imin: 0 vm.uma.syncache.domain.0.imax: 0 vm.uma.syncache.domain.0.nitems: 0
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