Date: Wed, 22 Aug 2018 21:32:47 +0300 From: Greg V <greg@unrelenting.technology> To: Per Gunnarsson <p.gunnarsson@yahoo.com> Cc: freebsd-current@freebsd.org Subject: Re: dmesg output I don't understand Message-ID: <1534962767.74383.2@hraggstad.unrelenting.technology> In-Reply-To: <fdc351a7-b19f-3d19-60ad-9045ab26b132@yahoo.com> References: <fdc351a7-b19f-3d19-60ad-9045ab26b132@yahoo.com>
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On Wed, Aug 22, 2018 at 7:20 PM, Per Gunnarsson <p.gunnarsson@yahoo.com> wrote: > Hello! > > What do these lines in my dmesg mean? > > I am on amd64. > > /usr/src Revision: 338177 > > /usr/ports Revision: 477773 > > P.S > > I got Fatal trap 12 with this revision after installing several fusefs > modules from ports. > > After removing fuse from my loader.conf, things booted again. > > Regards, > > Per Gunnarsson > > lock order reversal: > 1st 0xfffffe0000e82d80 bufwait (bufwait) @ > /usr/src/sys/kern/vfs_bio.c:3916 > 2nd 0xfffff80005787000 dirhash (dirhash) @ > /usr/src/sys/ufs/ufs/ufs_dirhash.c:289 Hi, this is debugging output you're seeing because your kernel is built with the WITNESS option. (e.g. the default GENERIC kernel in -CURRENT) lock order reversal is a very common message, you can ignore it. Switch to GENERIC-NODEBUG to get rid of the messages and get a performance boost (these safety checks impact syscall performance)
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