On Mon, May 30, 2011 at 21:46, Markus Rathgeb <maggu2810@xxxxxxxxxxxxxx> wrote: > If I insert a special USB stick to my computer, udev will go crazy. > The USB stick is a "SanDisk Cruzer" device. It represents himself as a > block device and a CD rom device. > > I do not know, how I could help. So please have a look at the logs: Yeah, the fake cdrom on the stick seems pretty broken. It generates media-changed events on very open(), and udev runs open() for the new event, which ... creates the loop you are seeing. # /sbin/udevadm monitor & # touch /dev/sr1 KERNEL[1306785694.680617] change \ /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host4/target4:0:0/4:0:0:1/block/sr1 (block) ACTION=change SUBSYSTEM=block DISK_MEDIA_CHANGE=1 ... # grep . /sys/class/block/sr1/* /sys/class/block/sr1/alignment_offset:0 /sys/class/block/sr1/capability:19 /sys/class/block/sr1/dev:11:1 /sys/class/block/sr1/discard_alignment:0 /sys/class/block/sr1/events:media_change eject_request /sys/class/block/sr1/events_poll_msecs:-1 /sys/class/block/sr1/ext_range:1 /sys/class/block/sr1/inflight: 0 0 /sys/class/block/sr1/range:1 /sys/class/block/sr1/removable:1 /sys/class/block/sr1/ro:0 /sys/class/block/sr1/size:62972 We need to find a way to work around such issues in the kernel, I guess. Tejun, any idea? Kay -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
