Date: Mon, 11 Oct 2010 23:02:01 +0200 From: "barbara" <barbara.xxx1975@libero.it> To: "jh" <jh@FreeBSD.org> Cc: freebsd-current <freebsd-current@FreeBSD.org> Subject: Re:HEADS UP: device name checking on device registration Message-ID: <LA593D$584FAABD3BF6073282A094BECDF03362@libero.it>
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> > Since r213526 device names are checked on device registration. That is,= > if you call a make_dev*() function with an invalid device name, a panic= > will occur by default. For make_dev_credf(9) or make_dev_p(9) you can > specify the MAKEDEV_CHECKNAME flag to get an error return instead of a > panic. > > Invalid names are as follows: > > - empty name > - names longer than SPECNAMELEN > - names containing "." or ".." path component > - names ending with '/' > - already existing device names > > So, if you see a "bad si_name" panic you may have encountered a driver > bug. > > Currently several GEOM classes (notably geom_label) allow to create > devices with invalid names. Below is a link to a patch which converts > g_dev_taste() to use make_dev_p() with MAKEDEV_CHECKNAME flag. It's not= > a complete solution and essentially changes the panic to a printf. > > http://people.freebsd.org/~jh/patches/geom_dev-checkname.diff > > -- > Jaakko Hi, I faced that kind of panic today and now I'm able to boot again into CURR= ENT after applying the patch and rebuilding kernel. The panic is caused by: g_dev_taste(): make_dev_p() failed (gp->name=3Dext2fs//, error=3D22) as I have a linux partition (I swear, it's for my mom!) on the same machi= ne. As I don't care about that partition (being ext4 I can't even mount it), = is there any solution other then applying the patch after every csup? Thanks Barbara
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