Hi all,

Here is a list of some known regressions in 2.6.23-rc6.

Feel free to add new regressions/remove fixed etc.
http://kernelnewbies.org/known_regressions

List of Aces

Name                    Regressions fixed since 21-Jun-2007
Adrian Bunk                            10
Linus Torvalds                         6
Alan Stern                             5
Andi Kleen                             5
Hugh Dickins                           5
Trond Myklebust                        5
Andrew Morton                          4
Al Viro                                3
Alexey Starikovskiy                    3
Cornelia Huck                          3
David S. Miller                        3
Jens Axboe                             3
Stephen Hemminger                      3
Tejun Heo                              3



ACPI

Subject         : 2.6.23-rc5 hangs on boot, apparently when initializing the EC
References      : http://lkml.org/lkml/2007/9/11/369
Last known good : ?
Submitter       : Chuck Ebbert <cebbert@redhat.com>
Caused-By       : ?
Handled-By      : ?
Status          : unknown



CPUFREQ

Subject         : ide problems: 2.6.22-git17 working, 2.6.23-rc1* is not
References      : http://lkml.org/lkml/2007/7/27/298
                  http://lkml.org/lkml/2007/7/29/371
Last known good : ?
Submitter       : dth <dth@dth.net>
Caused-By       : Len Brown <lenb@kernel.org>
                  commit f79e3185dd0f8650022518d7624c876d8929061b
Handled-By      : Len Brown <lenb@kernel.org>
Status          : problem is being debugged



FS

Subject         : hanging ext3 dbench tests
References      : http://lkml.org/lkml/2007/9/11/176
Last known good : ?
Submitter       : Andy Whitcroft <apw@shadowen.org>
Caused-By       : ?
Handled-By      : ?
Status          : unknown

Subject         : umount triggers a warning in jfs and takes almost a minute
References      : http://lkml.org/lkml/2007/9/4/73
Last known good : ?
Submitter       : Oliver Neukum ...
[ message continues ]

A number of attempts to reproduce this on these machines has yet to
re-trigger it.  I guess the Status is therefore "under test --
unreproducible at present"

-apw
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I'm still waiting to hear from Oliver whether or not this is actually a
regression.

Thanks,
Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

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OK, I've done test. On 2.6.22 I was unable to trigger the warning.
On 2.6.23-rc6 I get the following warning in about 3/4 of all unmounts:

Sep 19 13:08:04 oenone kernel: WARNING: at fs/jfs/jfs_logmgr.c:1643 jfs_flush_journal()
Sep 19 13:08:04 oenone kernel:
Sep 19 13:08:04 oenone kernel: Call Trace:
Sep 19 13:08:04 oenone kernel:  [<ffffffff8860f962>] :jfs:jfs_flush_journal+0x26a/0x27d
Sep 19 13:08:04 oenone kernel:  [<ffffffff8029fca1>] dispose_list+0xde/0xf7
Sep 19 13:08:04 oenone kernel:  [<ffffffff885fd003>] :jfs:jfs_umount+0x30/0xe5
Sep 19 13:08:04 oenone kernel:  [<ffffffff885f9a31>] :jfs:jfs_put_super+0xd/0x5e
Sep 19 13:08:04 oenone kernel:  [<ffffffff8028ef8f>] generic_shutdown_super+0x60/0xf0
Sep 19 13:08:04 oenone kernel:  [<ffffffff8028f02c>] kill_block_super+0xd/0x1e
Sep 19 13:08:04 oenone kernel:  [<ffffffff8028f0f7>] deactivate_super+0x6a/0x82
Sep 19 13:08:04 oenone kernel:  [<ffffffff802a2184>] sys_umount+0x249/0x25a
Sep 19 13:08:04 oenone kernel:  [<ffffffff802616ff>] audit_syscall_entry+0x141/0x174
Sep 19 13:08:04 oenone kernel:  [<ffffffff8020be8c>] tracesys+0xdc/0xe1
Sep 19 13:08:04 oenone kernel:

This is on a partition of a usb mass storage device with 2K sector size.
IMHO it is a regression. I am recompiling with CONFIG_JFS_DEBUG.

	Regards
		Oliver

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Looks like a regression then.  I'll take a look at the debug output and get back to you.

Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

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Hi Michal,

The NFSV4 [BUG] 2.6.23-rc5 kernel BUG at fs/nfs/nfs4xdr.c:945, is again
seen in 2.6.23-rc6. Can this bug be added as known regression for
2.6.23-rc6. References http://lkml.org/lkml/2007/9/7/27.

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.

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[ message continues ]

I have patches which fix this, which we're testing.  (See bugzilla.)

Neil's working on this.  Also not a regression.

--b.
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