From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: 2.6.35-rc2-git2: Reported regressions from 2.6.34 Date: Tue, 8 Jun 2010 18:53:55 -0700 (PDT) Message-ID: References: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org Content-Type: text/plain; charset="iso-8859-1" To: "Rafael J. Wysocki" , Carl Worth , Eric Anholt , Venkatesh Pallipadi , Jens Axboe Cc: DRI , Linux SCSI List , Network Development , Linux Wireless List , Linux Kernel Mailing List , Linux ACPI , Andrew Morton , Kernel Testers List , Linux PM List , Maciej Rutecki [ Added lots of cc's to direct specific people to look at the regressions = that may or may not be theirs... ] On Wed, 9 Jun 2010, Rafael J. Wysocki wrote: > > * Quite a few of the already reported regressions may be related to the = bug > fixed by 386f40c86d6c8d5b717ef20620af1a750d0dacb4 (Revert "tty: fix a = little > bug in scrup, vt.c"), so reporters please retest with this commit appl= ied.] >From a quick look, most of them look unrelated to that unfortunate bug. = It's hard to tell for sure, of course (memory corruption can do pretty = much anything), but I'm not seeing the 07200720.. pattern at least. And some of them do seem to be bisected to likely culprits and/or have = patches that are claimed to have fixed them. > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16163 > Subject : [2.6.35-rc1 Regression] i915: Commit cfecde causes VGA to stay = off > Submitter : David John > Date : 2010-06-02 12:52 (7 days old) > Message-ID : <4C065423.3000202@xenontk.org> > References : http://marc.info/?l=3Dlinux-kernel&m=3D127548313828613&w=3D2 That has a "reverting the commit fixes it", and a confirmation from Nick = Bowler. Eric, Carl: should I just revert that commit? Or do you have a fix? > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16145 > Subject : Unable to boot after "ACPI: Don't let acpi_pad needlessly mark = TSC unstable" > Submitter : Tom Gundersen > Date : 2010-06-07 13:11 (2 days old) > Handled-By : Venkatesh Pallipadi Hmm. This does seem to be a properly bisected commit, but at the same time = it looks from the bugzilla like it's just pure luck on that machine that = the acpi_pad driver happened to mark TSC unstable - so while the commit = bisected is the real one, it's not the "deeper reason" for the problem. Venki, any updates? > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16129 > Subject : BUG: using smp_processor_id() in preemptible [00000000] code: j= bd2/sda2 > Submitter : Jan Kreuzer > Date : 2010-06-05 06:15 (4 days old) This seems to have been introduced by commit 7cbaef9c83e58bbd4bdd534b09052b6c5ec457d5 Author: Ingo Molnar Date: Sat Nov 8 17:05:38 2008 +0100 sched: optimize sched_clock() a bit = sched_clock() uses cycles_2_ns() needlessly - which is an irq-disabling variant of __cycles_2_ns(). = Most of the time sched_clock() is called with irqs disabled already. The few places that call it with irqs enabled need to be updated. = Signed-off-by: Ingo Molnar and this seems to be one of those calling cases that need to be updated. Ingo? The call trace is: BUG: using smp_processor_id() in preemptible [00000000] code: jbd2/sda2-8/= 337 caller is native_sched_clock+0x3c/0x68 Pid: 337, comm: jbd2/sda2-8 Not tainted 2.6.35-rc1jan+ #4 Call Trace: [] debug_smp_processor_id+0xc9/0xe4 [] native_sched_clock+0x3c/0x68 [] sched_clock+0x9/0xd [] blk_rq_init+0x97/0xa3 [] get_request+0x1c4/0x2d0 [] get_request_wait+0x29/0x1a6 [] __make_request+0x338/0x45b [] generic_make_request+0x2bb/0x330 [] submit_bio+0xd2/0xef [] submit_bh+0xf4/0x116 [] block_write_full_page_endio+0x89/0x96 [] block_write_full_page+0x15/0x17 [] ext4_writepage+0x356/0x36b [] __writepage+0x1a/0x39 [] write_cache_pages+0x20d/0x346 [] generic_writepages+0x27/0x29 [] journal_submit_data_buffers+0x110/0x17d [] jbd2_journal_commit_transaction+0x4cb/0x156d [] kjournald2+0x147/0x37a (from the bugzilla thing) > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16122 > Subject : 2.6.35-rc1: WARNING at fs/fs-writeback.c:1142 __mark_inode_dirt= y+0x103/0x170 > Submitter : Larry Finger > Date : 2010-06-04 13:18 (5 days old) Jens? > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16120 > Subject : Oops: 0000 [#1] SMP, unable to handle kernel NULL pointer deref= erence at (null) > Submitter : Alex Zhavnerchik > Date : 2010-06-04 09:25 (5 days old) > Handled-By : Eric Dumazet This one seems to have a patch in bugzilla. > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16104 > Subject : Radeon KMS does not start after merge of the new PM-Code > Submitter : Jan Kreuzer > Date : 2010-06-02 07:47 (7 days old) This one also has a patch in Bugzilla, I think Airlie is just waiting to = calm down his queue and already removed the dependency on the temperature = code. DaveA? > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16161 > Subject : [2.6.35-rc1 regression] sysfs: cannot create duplicate fi= lename ... XVR-600 related? > Submitter : Mikael Pettersson > Date : 2010-06-01 19:57 (8 days old) > Message-ID : <19461.26166.427857.612983@pilspetsen.it.uu.se> > References : http://marc.info/?l=3Dlinux-kernel&m=3D127542227511925&w= =3D2 > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16090 > Subject : sysfs: cannot create duplicate filename > Submitter : Tobias > Date : 2010-06-01 15:59 (8 days old) > Handled-By : Jesse Barnes These two look related. Both are related to that "slot" thing in sysfs = PCI, but only one of them is marked as Jesse's. Jesse? > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16037 > Subject : NULL Pointer dereference in __ir_input_register/budget_ci_attach > Submitter : Sean Finney > Date : 2010-05-23 19:52 (17 days old) Perhaps related to commit 13c24497086418010bf4f76378bcae241d7f59cd? David H=E4rdeman, Mauro Carvalho Chehab added to cc. Linus