kernel-packages team mailing list archive

[Anasuya M Shankar <anasuyams@xxxxxxxxxx>]

Continue is the following messages on the new kernel
ubuntu@ubuntu:~$ EXT4-fs error (device sda): mb_free_blocks:1433: group 17, block 574042:freeing already freed block (bit 16986); block bitmap corrupt.
EXT4-fs error (device sda): ext4_mb_generate_buddy:756: group 17, 13645 clusters in bitmap, 13646 in gd; block bitmap corrupt.
EXT4-fs error (device sda): mb_free_blocks:1433: group 33, block 1084792:freeing already freed block (bit 3448); block bitmap corrupt.
EXT4-fs error (device sda): ext4_mb_generate_buddy:756: group 33, 9 clusters in bitmap, 10 in gd; block bitmap corrupt.


ubuntu@ubuntu:~$ dpkg --list | grep kernel*
ii  kmod                               15-0ubuntu5                        ppc64el      tools for managing Linux kernel modules
ii  libdrm2:ppc64el                    2.4.50-1                           ppc64el      Userspace interface to kernel DRM services -- runtime
ii  linux-headers-3.13.0-0             3.13.0-0.10+ppc64el                all          Header files related to Linux kernel version 3.13.0
ii  linux-headers-3.13.0-0-generic     3.13.0-0.10+ppc64el                ppc64el      Linux kernel headers for version 3.13.0 on PowerPC 64el SMP
ii  linux-headers-generic              3.13.0.0.1+ppc64el3                ppc64el      Generic Linux kernel headers
ii  linux-image-3.13.0-0-generic       3.13.0-0.15                        ppc64el      Linux kernel image for version 3.13.0 on PowerPC 64el SMP
iU  linux-image-extra-3.13.0-0-generic 3.13.0-0.15                        ppc64el      Linux kernel extra modules for version 3.13.0 on PowerPC 64el SMP
ii  linux-image-virtual                3.13.0.0.1+ppc64el3                ppc64el      This package will always depend on the latest minimal generic kernel image.
ii  linux-virtual                      3.13.0.0.1+ppc64el3                ppc64el      Minimal Generic Linux kernel and headers
ii  rsyslog                            7.4.4-1ubuntu2                     ppc64el      reliable system and kernel logging daemon
ubuntu@ubuntu:~$

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https://bugs.launchpad.net/bugs/1266399

Title:
  ext4-fs error messages pop up on command line

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” source package in Trusty:
  Confirmed

Bug description:
  Description:

  ===========

  
  Adhoc ext4-fs errors seen on the command line:
  No particular pattern observed, pops up adhocly.

  EXT4-fs error (device sda): mb_free_blocks:1433: group 5, block 196603:freeing already freed block (bit 32763); block bitmap corrupt.
  EXT4-fs error (device sda): ext4_mb_generate_buddy:756: group 5, 3442 clusters in bitmap, 3444 in gd; block bitmap corrupt.

  Environment:

  ============

  Host: Power8
  Guest : ubuntu hosted on Power8

  Command line to spawn the ubuntu guest:
  qemu-system-ppc64 -enable-kvm -M pseries -cpu POWER8 -smp 1 -m 10G -nographic -nodefaults -monitor stdio -serial pty -append "root=/dev/sda" -kernel trusty-server-cloudimg-ppc64el-vmlinuz-generic -device spapr-vscsi -device spapr-vlan,netdev=net0,mac=6c:ae:8b:69:16:11 -netdev bridge,br=virbr0,id=net0 -drive file=trusty-server-cloudimg-ppc64el.img.qcow2

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