Messages in this thread |  | | Date | Sat, 13 Oct 2001 19:36:35 -0700 | From | Matthew Dharm <> | Subject | Re: mount hanging 2.4.12 |
| |
Media change is broken for the SDDR-09 driver. That's why it's experimental, among other reasons.
Don't worry about that, but if you've got a non-media change related problem, then I would look at that.
Matt
On Sat, Oct 13, 2001 at 10:01:06PM -0400, Alexander Viro wrote: > > > On Sat, 13 Oct 2001, Ed Tomlinson wrote: > > > Oct 13 19:28:31 oscar kernel: usb-uhci.c: interrupt, status 2, frame# 1147 > > Oct 13 19:28:31 oscar kernel: I/O error: dev 08:01, sector 0 > > Oct 13 19:28:31 oscar kernel: FAT: unable to read boot sector > > Oct 13 19:28:31 oscar kernel: VFS: Disk change detected on device sd(8,1) > > Oct 13 19:28:31 oscar kernel: SCSI device sda: 131072 512-byte hdwr sectors (67 MB) > > Oct 13 19:28:31 oscar kernel: sda: Write Protect is on > > Oct 13 19:28:31 oscar kernel: sda: sda1 > > > > The device is a usb smartmedia reader using the sddr-09 support. > > OK, looks like: > a) ->check_media_change() is screwed for that device. > b) we are hanging on something interesting. It isn't ->s_umount > and it's very unlikely to be ->s_lock or mount_sem. What it might be, > though... I suspect that ->bd_sem is screwed. > > Could you reproduce the hang and then do Alt-Sysrq-T? That should > give you stack traces. I'm especially interested in stack trace of hung > mount(8). It's nice to know that it ends on down(), but knowing what had > called that down() would help big way. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Matthew Dharm Home: mdharm-usb@one-eyed-alien.net Maintainer, Linux USB Mass Storage Driver
NYET! The evil stops here! -- Pitr User Friendly, 6/22/1998 [unhandled content-type:application/pgp-signature] |  |