Date: Sat, 25 Aug 2007 09:31:51 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: rsidd120@gmail.com Cc: freebsd-usb@freebsd.org Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) Message-ID: <20070825.093151.2040712281.imp@bsdimp.com> In-Reply-To: <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> References: <200708241010.l7OAA7bl066026@freefall.freebsd.org> <20070824.212230.-957833176.imp@bsdimp.com> <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com>
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In message: <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> "Rahul Siddharthan" <rsidd120@gmail.com> writes: : On 8/25/07, M. Warner Losh <imp@bsdimp.com> wrote: : > In message: <200708241010.l7OAA7bl066026@freefall.freebsd.org> "Rahul Siddharthan" <rsidd@online.fr> writes: : -snip- : > : I followed the suggested change to usb_subr.c here: : > : http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112698.html : > : and, after this, the system creates a da0 device, and : > : mount -t msdosfs /dev/da0s1 /mnt : > : works. I haven't yet got a panic by unmounting and removing, but removing : > : without unmounting does cause a panic still (as you say you are aware). : : -snip- : : > We only do the clear endpoint stall in FreeBSD 7 when the device has : > been quirked to do a clearstall. Is your device one that has this : > quirk? : : : The device is reported as : umass0: <vendor 0x0457 USB Mass Storage Device, class 0/0, rev : 2.00/1.00, addr 2> on uhub2 : : and pciconf -v -l gives (for the USB controller) : vendor = 'VIA Technologies Inc' : device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' : class = serial bus : subclass = USB : uhci1@pci0:11:1: class=0x0c0300 card=0x12340925 chip=0x30381106 : rev=0x50 hdr=0x00 : vendor = 'VIA Technologies Inc' : device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' : class = serial bus : subclass = USB : ehci0@pci0:11:2: class=0x0c0320 card=0x12340925 chip=0x31041106 : rev=0x51 hdr=0x00 : vendor = 'VIA Technologies Inc' : device = 'VT6202/12 USB 2.0 Enhanced Host Controller' : class = serial bus : subclass = USB Yes, but does it have this quirk? Please send usbdevs -v for this device. Warner
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