Re: How to crash a 4.99.69 with nothing but an USB stick...

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Wed, Jul 23, 2008 at 10:02:33PM +0300, Andreas Gustafsson wrote:
> Martin S. Weber wrote:
> > I don't have the time to play with other USB media and other filesystems
> > at the moment as well as with more modern -current's. Have fun!
> 
> As I reported in PR 38762, I can reliably crash 4.99.62 by mounting a
> FFS filesystem over USB.  I have reproduced it on four different
> machines, using both flash and rotating media, and using both ehci and
> uhci controllers.

Hmm I don't get a panic, just a lot of:

umass0 at uhub1 port 5 configuration 1 interface 0
umass0: Kingston DataTraveler 2.0, rev 2.00/2.00, addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 1 lun per target
sd0 at scsibus0 target 0 lun 0: <Kingston, DataTraveler 2.0, 1.00> disk 
removable
sd0: fabricating a geometry
sd0: 988 MB, 988 cyl, 64 head, 32 sec, 512 bytes/sect x 2023424 sectors
sd0: fabricating a geometry
umass0: BBB bulk-out stall clear failed, TIMEOUT
umass0: BBB reset failed, TIMEOUT
umass0: BBB bulk-in clear stall failed, TIMEOUT
umass0: BBB bulk-out clear stall failed, TIMEOUT
umass0: BBB reset failed, TIMEOUT
...

(The BBB... is after "ls -l /mnt", ie the mount worked, but access doesn't - the
ls never returns - the rest of the system is usable, I think the fs is FAT16)

This is with today's -current/amd64, MP.

Cheers,

Patrick