On 21 May 2014 15:20, Lukáš Czerner <lczerner@xxxxxxxxxx> wrote: > On Wed, 21 May 2014, Arturo Borrero Gonzalez wrote: > >> Date: Wed, 21 May 2014 12:29:04 +0200 >> From: Arturo Borrero Gonzalez <arturo.borrero.glez@xxxxxxxxx> >> To: linux-ext4@xxxxxxxxxxxxxxx >> Subject: OOPs in ext4 >> >> Hi there! >> >> I have an oops in a virtual machine using ext4 as fs. > > Hi, > > yes there is definitely a bug in the error handling code because we > really should not hit that BUG_ON() later. > > However I am curious how we got this state in the first place. Can > you provide the logs before the first oops ? Are there any more > warnings ? > Unfortunately, given the fs was remounted ro, no logs were written. I took the error from dmesg. > What is your storage setup ? Any particular workload you've been > running at the time ? Can you reproduce it ? > I have a machine with a plain libvirt/kvm with LVM for virtualization. I create a couple of LVM volumes for each virtual machine. Each virtual machine is then installed to the LVM volume, using ext4 and using the volume as a plain disc (no nested LVM, etc..) Specifically, I use this virtual machine to develop (netfilter, kernel). Is a Debian Wheezy system. So, what happened was: * ssh to the virtual machine. * cd to the devel dir * stg pop a couple of patches. * git pull the latest nftables kernel tree. * run `make -j8 deb-pkg' * the build failed due to fs remounted RO. * reboot. The kernel image I was running is this: http://git.kernel.org/cgit/linux/kernel/git/pablo/nftables.git/ I see now that it seem to be based upon 3.10, not 3.14 as originally I stated. regards -- Arturo Borrero González -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
