[Bug 12679] New: 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[Bug 12679] New: 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679

           Summary: 2.6.28.4 ext4 fs hang, load 22 and up, may be
                    firefox/apps stuck on sync_page
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.28.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: ext4
        AssignedTo: fs_ext4@kernel-bugs.osdl.org
        ReportedBy: sec@dschroeder.info


Latest working kernel version: ?
Earliest failing kernel version: ?
Distribution: Gentoo
Hardware Environment: Desktop, Athlon X2 5050e, 4GB Ram, mcp55, hd103ui
Software Environment: amd64 gentoo linux,kernel.org 2.6.28.4, e2fsprogs 1.41.4
Problem Description: using the system, applications accessing the "faulty"
filesystem hang, load increases to 23.00, dmesg is nothing special, top shows
two cores in nearly 100% wait 

Steps to reproduce: dont know yet


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679





------- Comment #1 from sec@dschroeder.info  2009-02-09 07:59 -------
Created an attachment (id=20168)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=20168&action=view)
ps -wweo uid,pid,ppid,pri,wchan:20,stat,time,command

fetchmail is an example of application, which was started, after the filesystem
went faulty...


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679





------- Comment #2 from sandeen@redhat.com  2009-02-09 08:07 -------
You might do:
# dmesg -c

then attach the output of:
# echo w > /proc/sysrq-trigger"
# dmesg


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679





------- Comment #3 from sec@dschroeder.info  2009-02-10 11:43 -------
compiled kernel with magic sysrq and waiting for reoccurrence...
timeline:
switched to ext4
happened once
happened twice (wrote this entry)
waiting...


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679


sec@dschroeder.info changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |REJECTED
         Resolution|                            |UNREPRODUCIBLE




------- Comment #4 from sec@dschroeder.info  2009-02-23 14:09 -------
hmm...it doesnt occured again...and i switched to 2.6.28.7...so i close this
bug...


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679


sec@dschroeder.info changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REJECTED                    |CLOSED




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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679


sec@dschroeder.info changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|CLOSED                      |REOPENED
         Resolution|UNREPRODUCIBLE              |




------- Comment #5 from sec@dschroeder.info  2009-02-26 03:09 -------
f**k, it just happened again...attached echo w > /proc/sysrq-trigger...
...if this happens, can i remove the blocker, so i can cleanly shutdown?


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679





------- Comment #6 from sec@dschroeder.info  2009-02-26 03:10 -------
Created an attachment (id=20372)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=20372&action=view)
echo w > /proc/sysrq_trigger


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679





------- Comment #7 from sandeen@redhat.com  2009-03-03 21:33 -------
This is probably fixed by:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=2acf2c261b823d9d9ed954f348b97620297a36b5

which may make it to .28.y eventually...


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[Bug 12679] 2.6.28.4 ext4 fs hang, load 22 and up, may be firefox/apps stuck on sync_page

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12679


daniel schroeder <sec@dschroeder.info> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |PATCH_ALREADY_AVAILABLE
         Regression|---                         |No




--- Comment #8 from daniel schroeder <sec@dschroeder.info>  2009-04-09 15:09:50 ---
seems to be fixed...mentioned patch is in 2.6.28.9...

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