http://bugzilla.kernel.org/show_bug.cgi?id=12686
Summary: kernel oops __ticket_spin_lock
Product: File System
Version: 2.5
KernelVersion: 2.6.29-rc4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ext4
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: NA
Earliest failing kernel version: NA
Distribution: Ubuntu
Hardware Environment: Dell Optiplex 740
Software Environment: NA
Hi,
playing around with crafted ext4 fs raised a kernel oops (see attached extract
from kern.log)
Steps to reproduce:
*gunzip the poc enclosed
*mount -t ext4 ext4.poc.img /media/here -o loop
*touch /media/here/test
Regards,
David Maciejak
Fortinet's FortiGuard Global Security Research Team
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
http://bugzilla.kernel.org/show_bug.cgi?id=12686
------- Comment #1 from [email protected] 2009-02-11 02:55 -------
Created an attachment (id=20189)
--> (http://bugzilla.kernel.org/attachment.cgi?id=20189&action=view)
kern.log extract
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
http://bugzilla.kernel.org/show_bug.cgi?id=12686
------- Comment #2 from [email protected] 2009-02-11 02:55 -------
Created an attachment (id=20190)
--> (http://bugzilla.kernel.org/attachment.cgi?id=20190&action=view)
gzip ext4 poc
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
http://bugzilla.kernel.org/show_bug.cgi?id=12686
Theodore Tso <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |[email protected]
Resolution| |UNREPRODUCIBLE
Regression|--- |No
--- Comment #3 from Theodore Tso <[email protected]> 2009-05-19 19:08:39 ---
I can't reproduce this on a recent kernel. Even after removing the bogus
indirect and triple indirect block which causes modern kernels to refuse to
mount the filesystem, it still doesn't crash, even after giving all of the
ext4_claim_inode() errors caused by the very large s_first_ino value. So it
looks like this problem is no longer an issue on 2.6.30-rc6 kernels.
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.