[Bug 26857] Re: glibc error during resize2fs

Thu Oct 26 18:54:14 UTC 2017

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On 2004-09-16T04:07:04+00:00 Alexandre wrote:

>From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2)
Gecko/20040809

Description of problem:
Taking a 98176-blocks long ext3 filesystem formatted to hold the /boot
device of an FC3-re0915.1 install, after a clean fsck, and attempting
to resize it to 50M, causes glibc to print a double-free error message
and abort the resize.  The filesystem may be corrupted after this, but
fsck can easily fix it.  No file corruption was detected.  Growing the
filesystem to the original size produces the same problem.

I've experienced this with the old /boot filesystem of an FC2 install
as well, so I don't think it's extremely sensitive to filesystem
contents.  I haven't had the guts to try it on bigger filesystems.

Version-Release number of selected component (if applicable):
e2fsprogs-1.35-9.5 glibc-2.3.3-53

How reproducible:
Always

Steps to Reproduce:
1.umount /boot
2.dd if=/dev/holding/boot of=/tmp/boot.img
3.mount /boot
4.e2fsck -f /tmp/boot.img
5.resize2fs /tmp/boot.img 50M

Actual Results:  resize2fs 1.35 (28-Feb-2004)
Resizing the filesystem on /tmp/boot.img to 51200 (1k) blocks.
*** glibc detected *** double free or corruption: 0x08218d68 ***
Aborted

Expected Results:  It used to work

Additional info:

After resize2fs crashes, here's what I get:

# e2fsck -f /tmp/boot.img
e2fsck 1.35 (28-Feb-2004)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -(6294--6549) -(6744--6999)
Fix<y>? yes

Free blocks count wrong for group #0 (431, counted=943).
Fix<y>? yes

Free blocks count wrong (40637, counted=41149).
Fix<y>? yes

/tmp/boot.img: ***** FILE SYSTEM WAS MODIFIED *****
/tmp/boot.img: 36/14336 files (5.6% non-contiguous), 10051/51200 blocks
[root at fri ~]# resize2fs /tmp/boot.img
resize2fs 1.35 (28-Feb-2004)
Resizing the filesystem on /tmp/boot.img to 98176 (1k) blocks.
*** glibc detected *** double free or corruption: 0x094c3d68 ***
Aborted
[root at fri ~]# e2fsck -f /tmp/boot.img
e2fsck 1.35 (28-Feb-2004)
Pass 1: Checking inodes, blocks, and sizes
Group 7's inode table at 57349 conflicts with some other fs block.
Relocate<y>? yes

Group 7's inode table at 57350 conflicts with some other fs block.
Relocate<y>? yes

Group 7's inode table at 57351 conflicts with some other fs block.
Relocate<y>? 
[...]

Reply at:
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/26857/comments/0

------------------------------------------------------------------------
On 2004-09-16T16:01:41+00:00 Thomas wrote:

Fixed in rawhide in rpm e2fsprogs-1.35-10 or newer.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/26857/comments/1

------------------------------------------------------------------------
On 2004-10-02T20:09:39+00:00 Alexandre wrote:

Confirmed fixed, thanks.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/26857/comments/2

** Changed in: e2fsprogs (Fedora)
   Importance: Unknown => High

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https://bugs.launchpad.net/bugs/26857

Title:
  glibc error during resize2fs

Status in glibc package in Ubuntu:
  Fix Released
Status in e2fsprogs package in Fedora:
  Fix Released

Bug description:
  After trying to resize a filesystem with resize2fs an error pops up, although
  the filesystem was resized the error seemed to abort the procedure. The command
  was done in slax 5.0.6 to be done on an ext3 partition hosting Ubuntu Breezy.

  [code]
  Filesystem            Size  Used Avail Use% Mounted on
  tmpfs                 371M  177M  194M  48% /
  /dev/hda1              40G  4.8G   36G  12% /mnt/hda1
  /dev/hda2             6.1G  2.3G  3.5G  40% /mnt/hda2
  /dev/hda4              94G   33G   61G  36% /mnt/hda4
  root at slax:~# resize2fs /dev/hda2
  resize2fs 1.35 (28-Feb-2004)
  /dev/hda2 is mounted; can't resize a mounted filesystem!

  root at slax:~# umount /dev/hda2
  root at slax:~# df -h
  Filesystem            Size  Used Avail Use% Mounted on
  tmpfs                 371M  177M  194M  48% /
  /dev/hda1              40G  4.8G   36G  12% /mnt/hda1
  /dev/hda4              94G   33G   61G  36% /mnt/hda4
  root at slax:~# resize2fs /dev/hda2
  resize2fs 1.35 (28-Feb-2004)
  Please run 'e2fsck -f /dev/hda2' first.

  root at slax:~# e2fsck -f /dev/hda2
  e2fsck 1.35 (28-Feb-2004)
  Pass 1: Checking inodes, blocks, and sizes
  Pass 2: Checking directory structure
  Pass 3: Checking directory connectivity
  Pass 4: Checking reference counts
  Pass 5: Checking group summary information
  UBUNTU: 95608/1636352 files (2.8% non-contiguous), 2606973/6538455 blocks
  root at slax:~# resize2fs /dev/hda2
  resize2fs 1.35 (28-Feb-2004)
  Resizing the filesystem on /dev/hda2 to 15759764 (1k) blocks.
  *** glibc detected *** double free or corruption (!prev): 0x080526a0 ***
  Aborted
  root at slax:~# mount /dev/hda2
  root at slax:~# df -h
  Filesystem            Size  Used Avail Use% Mounted on
  tmpfs                 371M  177M  194M  48% /
  /dev/hda1              40G  4.8G   36G  12% /mnt/hda1
  /dev/hda4              94G   33G   61G  36% /mnt/hda4
  /dev/hda2              15G  2.3G   12G  17% /mnt/hda2
  root at slax:~# e2fsck -f /dev/hda2
  e2fsck 1.35 (28-Feb-2004)
  /dev/hda2 is mounted.

  WARNING!!!  Running e2fsck on a mounted filesystem may cause
  SEVERE filesystem damage.

  Do you really want to continue (y/n)? no

  check aborted.
  root at slax:~# umount /dev/hda2
  root at slax:~# e2fsck -f /dev/hda2
  e2fsck 1.35 (28-Feb-2004)
  Pass 1: Checking inodes, blocks, and sizes
  Pass 2: Checking directory structure
  Pass 3: Checking directory connectivity
  Pass 4: Checking reference counts
  Pass 5: Checking group summary information
  UBUNTU: 95608/3940352 files (2.8% non-contiguous), 2995737/15759764 blocks
  root at slax:~# 
  [/code]

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