bug on fs/inode.c:1422

Bug #722925 reported by Phillip Susi on 2011-02-22
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

While doing some testing with dmsetup and gparted on dmraid devices in today's Natty daily live cd, I hit this bug twice. The relevant code seems to be:

void iput(struct inode *inode)
 if (inode) {
  BUG_ON(inode->i_state & I_CLEAR);

  if (atomic_dec_and_lock(&inode->i_count, &inode_lock))

This was tripped when I tried manually removing a linear partition mapping with dmsetup remove, and again when I started a patched gparted I am testing.

Phillip Susi (psusi) wrote :

This bug seems a bit randomish. I tried to reproduce it the same way I did the first time and could not. A while later it happened when I run dmraid -an. I've hit it by doing several things, all of which seem to involve removing a dm device. I wrote down the call stack on one:


Jeremy Foshee (jeremyfoshee) wrote :

Hi Phillip,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/daily/current/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 722925

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

tags: added: needs-kernel-logs
tags: added: needs-upstream-testing
tags: added: kj-triage
Changed in linux (Ubuntu):
status: New → Incomplete
Phillip Susi (psusi) wrote :

Tested with build from Linus's tree post 2.6.38-rc6+ and it happens there too. Starting to git bisect.

tags: removed: needs-kernel-logs needs-upstream-testing
Changed in linux (Ubuntu):
status: Incomplete → Triaged
importance: Undecided → High
Phillip Susi (psusi) wrote :

Setting to high priority since, well, it's a kernel BUG.

Changed in linux:
importance: Unknown → Medium
status: Unknown → Invalid
Andy Whitcroft (apw) wrote :

Based on the upstream bug it seems this will be fixed when we upload the current rebased Natty. Closing Fix Committed.

Changed in linux (Ubuntu Natty):
status: Triaged → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 2.6.38-6.33

linux (2.6.38-6.33) natty; urgency=low

  [ Andy Whitcroft ]

  * d-i -- enable speakup-modules udeb
    - LP: #672699
  * rebase to 493f3358cb289ccf716c5a14fa5bb52ab75943e5
  * [Config] debian PPC64 configuration
  * [Config] cleanup powerpc config fixing unexpected inconsistancies
  * [Config] resync ppc64 configuration
  * SAUCE: match up ENTRY/END naming for 32/64 bit
  * rebase to fb62c00a6d8942775abc23d1621db1252e2d93d1
  * [Config] update configs after rebase to
  * [Config] pps_gen_parport no longer built

  [ Corentin Chary ]

  * SAUCE: (drop after 2.6.38) eeepc-wmi: reorder keymap
    - LP: #689393
  * SAUCE: (drop after 2.6.38) eeepc-wmi: add wlan key found on 1015P
    - LP: #689393

  [ John Johansen ]

  * SAUCE: Fix aufs calling of security_path_mknod
    - LP: #724456

  [ Kees Cook ]

  * SAUCE: proc: hide kernel addresses via %pK in /proc/<pid>/stack

  [ Tim Gardner ]

  * rebase to 2.6.38-rc7

  [ Upstream Kernel Changes ]

  * Revert "drm/i915: fix corruptions on i8xx due to relaxed fencing"

  [ Major Kernel Changes ]

  * rebase from v2.6.38-rc6 to v2.6.38-rc7 +
    - LP: #721389
    - LP: #722925
    - LP: #723672
    - LP: #723676
    - LP: #715318
 -- Andy Whitcroft <email address hidden> Mon, 07 Mar 2011 15:33:17 +0000

Changed in linux (Ubuntu Natty):
status: Fix Committed → Fix Released
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