Hi, With Linus' latest and greatest, I get an opps when I boot my laptop with a pen drive inserted in any USB port. The oops message is: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,2) The oops seems to be 100% repeatable. If a USB pen drive is not inserted, the laptop boots successfully. I've taken a photograph of the oops and you can view it at http://s714.photobucket.com/user/chris2553/media/IMG_20160722_053841.jpg.html. At the top of the picture, I notice that the partitions on my actual boot disk are being reported as being on /dev/sdb, so it seems likely that, at this point, the pen drive is being seen as /dev/sda, although that has scrolled off the screen. I don't boot via a ramdisk - my kernel has ext4 built in. The grub2 entry is: menuentry "Krisux, Linux 4.7.0-rc7+" { insmod ext2 set root=(hd0,2) linux /boot/vmlinuz-4.7.0-rc7+ ro root=/dev/sda2 resume=/dev/sda6 rootfstype=ext4 net.ifnames=0 } (BTW, Krisux is not a real distro - it's just the name I have given Linux from Scratch system.) The stack that is dumped is: dump_stack panic printk mount_block_root prepare_namespace kernel_init_freeable kernel_init ret_from_fork rest_init I realise I could work around this by specifying the boot partition by, say, its UUID, but I thought you would want me to report this anyway. Of course, I'm happy to provide any other information required and to test any fix, but I will be out and about for the next 14-16 hours, so it will be later tonight or maybe even tomorrow before I can respond. Chris -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
