Date: Mon, 25 Jul 2016 10:11:23 -0500 From: Eric van Gyzen <vangyzen@FreeBSD.org> To: Matthias Apitz <guru@unixarea.de>, freebsd-current@freebsd.org Subject: Re: seldom crashes on Dell E6330 with 12-CURRENT Message-ID: <551fda4a-4220-9be2-2409-9b8ad959827f@FreeBSD.org> In-Reply-To: <20160723072128.GA2136@c720-r292778-amd64> References: <20160723072128.GA2136@c720-r292778-amd64>
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On 07/23/16 02:21 AM, Matthias Apitz wrote: > > Hello, > > I own since July 15 a new laptop and faced 3 crashes, details see below. > What can I do to gather more information? Thanks > > > notes in general: > - hardware: Dell E6330, amd64, 4 cores i5-3360M, 8 GByte RAM, 250 GByte SSD w/ TRIM > - WLAN: urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R > - kernel: GENERIC r302904 (July 15) > - poudriere 3.2-pre: compiling ~1800 ports in 4 builders > - swap as plain file in /usr/swap01, 8 GByte > - apart of the crashes below, no crash during buildworld, buildkernel and > ~48 hours of poudriere fetching distfiles and making ~1800 ports > - no errors on 'memtest 1G' > > crashes/observations: > > 16.07.2016 07:12 > - on shutdown swap device (plain file in /usr) could not be detached > - drop to kdb > - nothing in /var/log/messages > > 17.07.2016 19:41 > - hard locked, had to power-off > - last command issued on console (no X11): cp -p * /usr/PKGDIR (around 1700 files, 2 GByte) > - nothing in /var/log/messages > > 20.07.2016 19:27 > - hard locked, had to power-off > - last command issued in xterm: fgrep mra... ~/* > - nothing in /var/log/messages What file system are you using? Do a full fsck (or zfs scrub). Try moving swap to a raw (freebsd-swap) partition so that you might get a kernel core dump. That will be the essential next step. Without more details from a core dump or debugger, your best option is to try a release or an older build. If that works, try to find the commit that introduced the behavior. This will be very tedious and time-consuming for your scenario, so definitely try getting a core dump first. Eric
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