From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Starr Subject: Re: 2.6.35-rc4-git3: Reported regressions from 2.6.34 Date: Thu, 8 Jul 2010 23:36:25 -0400 Message-ID: <201007082336.25201.shawn.starr__24997.5053863183$1278708390$gmane$org@rogers.com> References: <-IGZ64uxA6G.A.P0H.bLmNMB@chimera> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: 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 To: Linus Torvalds Cc: Jens Axboe , DRI , Linux SCSI List , Patrick McHardy , Network Development , Linux Wireless List , Linux Kernel Mailing List , Jesse Barnes , "David S. Miller" , Linux ACPI , Al Viro , Frederic Weisbecker , Dave Airlie , Andrew Morton , Kernel Testers List , Linux PM List , Maciej Rutecki List-Id: linux-pm@vger.kernel.org On Thursday, July 08, 2010 09:34:25 pm Linus Torvalds wrote: > On Thu, Jul 8, 2010 at 4:33 PM, Rafael J. Wysocki wrote: > > Unresolved regressions > > ---------------------- > > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16353 > > Subject : 2.6.35 regression > > Submitter : Zeev Tarantov > > Date : 2010-07-05 13:04 (4 days old) > > Message-ID : > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12783600270252= 2&w=3D2 > = > This is a gcc-4.5 issue. Whether it's also something that we should > change in the kernel is unclear, but at least as of now, the rule is > that you cannot compile the kernel with gcc-4.5. No idea whether the > compiler is just entirely broken, or whether it's just that it > triggers something iffy by being overly clever. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16346 > > Subject : 2.6.35-rc3-git8 - include/linux/fdtable.h:88 invoked > > rcu_dereference_check() without protection! Submitter : Miles Lane > > > > Date : 2010-07-04 22:04 (5 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12782810781593= 0&w=3D2 > = > I'm not entirely sure if these RCU proving things should count as > regressions. > = > Sure, the option to enable RCU proving is new, but the things it > reports about generally are not new - and they are usually not even > bugs in the sense that they necessarily cause any real problems. > = > That particular one is in the single-thread optimizated case for > fget_light, ie > = > if (likely((atomic_read(&files->count) =3D=3D 1))) { > file =3D fcheck_files(files, fd); > = > where I think it should be entirely safe in all ways without any > locking. So I think it's a false positive too. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16334 > > Subject : reiserfs locking (v2) > > Submitter : Sergey Senozhatsky > > Date : 2010-07-02 9:34 (7 days old) > > Message-ID : <20100702093451.GA3973@swordfish.minsk.epam.com> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12780630630359= 0&w=3D2 > = > Frederic? Al? I assume this is some late fallout from the BKL removal > ages ago.. It's the old filldir-vs-mmap crud, but normally it should > be impossible to trigger because the inode for a directory should > never be mmap'able, so we should never have the same i_mutex lock used > for both mmap and for filldir protection. > = > We saw some of that oddity long ago, I wonder if it's lockdep being > confused about some inodes. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16333 > > Subject : iwl3945: HARDWARE GONE?? > > Submitter : Priit Laes > > Date : 2010-07-02 16:02 (7 days old) > > Message-ID : <1278086575.2889.8.camel@chi> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12780865970598= 3&w=3D2 > = > This either got fixed, or will be practically impossible to debug. The > reporter ends up being unable to reproduce the issue. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16332 > > Subject : Kernel crashes in tty code (tty_open) > > Submitter : werner@guyane.yi.org > > Date : 2010-07-02 3:34 (7 days old) > > Message-ID : <1278041650.12788@guyane.yi.org> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12780416751193= 0&w=3D2 > = > This seems to be due to CONFIG_MRST (Moorestown). > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16330 > > Subject : Dynamic Debug broken on 2.6.35-rc3? > > Submitter : Thomas Renninger > > Date : 2010-07-01 15:44 (8 days old) > > Message-ID : <201007011744.19564.trenn@suse.de> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12779990721887= 7&w=3D2 > = > There's a suggested patch in > = > http://marc.info/?l=3Dlinux-kernel&m=3D127862524404291&w=3D2 > = > but no reply to it yet. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16329 > > Subject : 2.6.35-rc3: Load average climbing to 3+ with no > > apparent reason: CPU 98% idle, with hardly no I/O Submitter : > > T=F6r=F6k Edwin > > Date : 2010-07-01 7:40 (8 days old) > > Message-ID : <20100701104022.404410d6@debian> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12779700503053= 6&w=3D2 > = > This seems to be partly a confusion about what "load average" is. It's > not a CPU load, it's a system load average, and disk-wait processes > count towards it. He has some problem with his CD-ROM, and it sounds > like it might be hardware on the verge of going bad. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16324 > > Subject : Oops while running fs_racer test on a POWER6 box > > against latest git Submitter : divya > > Date : 2010-06-30 11:34 (9 days old) > > Message-ID : <4C2B28F3.7000006@linux.vnet.ibm.com> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12778969730306= 1&w=3D2 > = > I wonder if this is the writeback problem. That POWER crash dump is > unreadable, so it's hard to tell, but the load in question makes that > at least likely. > = > If so, it should hopefully be fixed in today's git (commit > 83ba7b071f30f7c01f72518ad72d5cd203c27502 and friends). > = > > Bug-entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16323 > > Subject : 2.6.35-rc3-git4 - kernel/sched.c:616 invoked > > rcu_dereference_check() without protection! Submitter : Miles Lane > > > > Date : 2010-07-01 12:21 (8 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12779869312554= 1&w=3D2 > = > See earlier about these being marked as regressions, but it should be > fixed by commit dc61b1d6 ("sched: Fix PROVE_RCU vs cpu_cgroup"). > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16322 > > Subject : WARNING: at /arch/x86/include/asm/processor.h:1005 > > read_measured_perf_ctrs+0x5a/0x70() Submitter : boris64 > > > > Date : 2010-07-01 13:54 (8 days old) > > Handled-By : H. Peter Anvin > = > Magic. Strange and dark magic. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16311 > > Subject : [REGRESSION][SUSPEND] 2.6.35-rcX won't suspend Lenovo > > W500 laptop Submitter : Shawn Starr > > Date : 2010-06-28 0:45 (11 days old) > > Message-ID : <201006272045.17004.shawn.starr@rogers.com> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12776863370528= 6&w=3D2 > = > I think this might be usefully bisected. Shawn? > = I'll have to try bisecting this weekend. It continues in Linux sh0n.net = 2.6.35-rc4+ #1 SMP Wed Jul 7 23:58:41 EDT 2010 x86_64 x86_64 x86_64 GNU/Lin= ux > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16309 > > Subject : 2.6.35-rc3 oops trying to suspend. > > Submitter : Andrew Hendry > > Date : 2010-06-27 12:40 (12 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12776424992678= 1&w=3D2 > = > I'm pretty sure this was fixed by Nick in commit 57439f878afa ("fs: > fix superblock iteration race"). > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16307 > > Subject : i915 in kernel 2.6.35-rc3, high number of wakeups > > Submitter : Enrico Bandiello > > Date : 2010-06-26 16:57 (13 days old) > > Message-ID : <4C26317A.5070309@postal.uv.es> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12775740340425= 9&w=3D2 > = > I don't think anybody noticed this one. Jesse? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16304 > > Subject : i915 - high number of wakeups > > Submitter : Enrico Bandiello > > Date : 2010-06-27 09:52 (12 days old) > = > Duplicate of that 16307 one. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16284 > > Subject : Hitting WARN_ON in hw_breakpoint code > > Submitter : Paul Mackerras > > Date : 2010-06-23 12:57 (16 days old) > > Message-ID : <20100623125740.GA3368@brick.ozlabs.ibm.com> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12772978911343= 2&w=3D2 > = > This has "I have a fix, will post it very soon." in the thread from > Frederic, but I'm not seeing anything else. Frederic? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16265 > > Subject : Why is kslowd accumulating so much CPU time? > > Submitter : Theodore Ts'o > > Date : 2010-06-09 18:36 (30 days old) > > First-Bad-Commit: > > http://git.kernel.org/linus/fbf81762e385d3d45acad057b654d56972acf58c > > Message-ID : > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12761085781903= 3&w=3D4 > = > Dave, Jesse? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16234 > > Subject : [2.6.35-rc3] reboot mutex 'bug'... > > Submitter : Daniel J Blueman > > Date : 2010-06-14 15:16 (25 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12765286111893= 3&w=3D2 > = > Ok, this is definitely harmless. Whether we should silence the warning > somehow is a separate question. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16230 > > Subject : inconsistent IN-HARDIRQ-W -> HARDIRQ-ON-W usage: > > fasync, 2.6.35-rc3 Submitter : Dominik Brodowski > > Date : 2010-06-13 9:53 (26 days > > old) > > Message-ID : <20100613095305.GA13231@comet.dominikbrodowski.net> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12764228220827= 7&w=3D2 > = > Fixed by commit f4985dc714d7. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16228 > > Subject : BUG/boot failure on Dell Precision T3500 > > (pci/ahci_stop_engine) Submitter : Brian Bloniarz > > > > Date : 2010-06-16 17:57 (23 days old) > > Handled-By : Bjorn Helgaas > = > This has a butt-ugly suggested patch that certainly won't be applied. > I saw the thread, but lost sight of it. Jesse, did that end up with > some resolution? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16221 > > Subject : 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* inval= id > > framebuffer id Submitter : Miles Lane > > Date : 2010-06-11 20:31 (28 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12762882811962= 3&w=3D2 > = > I dunno. Old, and apparently seen by two people. Dave? > = > Might be helped by bisection. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16205 > > Subject : acpi: freeing invalid memtype bf799000-bf79a000 > > Submitter : Marcin Slusarz > > Date : 2010-06-09 20:09 (30 days old) > > Message-ID : <20100609200910.GA2876@joi.lan> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12761142702991= 4&w=3D2 > > http://marc.info/?l=3Dlinux-kernel&m=3D127688398513862= &w=3D2 > = > This should be fixed by commit b945d6b2554d ("rbtree: Undo augmented > trees performance damage and regression"). > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16199 > > Subject : 2.6.35-rc2-git1 - include/linux/cgroup.h:534 invoked > > rcu_dereference_check() without protection! Submitter : Miles Lane > > > > Date : 2010-06-07 18:14 (32 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12759344781201= 5&w=3D2 > = > Another RCU proving thing. And this one looks the same as the 16323 > one above, and fixed by the same commit as that one. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16197 > > Subject : [BUG on 2.6.35-rc2] sysfs: cannot create duplicate > > filename '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/slot' Submitter > > : Ryan Wang > > Date : 2010-06-07 0:23 (32 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12758702221937= 8&w=3D2 > = > These should all be gone. See commit 3be434f0244ee by Jesse ('Revert > "PCI: create function symlinks in /sys/bus/pci/slots/N/"'). > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16187 > > Subject : Carrier detection failed in dhcpcd when link is up > > Submitter : Christian Casteyde > > Date : 2010-06-12 15:15 (27 days old) > > First-Bad-Commit: > > http://git.kernel.org/linus/10708f37ae729baba9b67bd134c3720709d4ae62 > > Handled-By : Andrew Morton > = > David? This bisects to a networking commit. Doesn't look sensible, but > what do I know? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16184 > > Subject : Container, X86-64, i386, iptables rule > > Submitter : Jean-Marc Pigeon > > Date : 2010-06-12 04:17 (27 days old) > > Handled-By : Patrick McHardy > = > Patrick, Davem? Ping? > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16179 > > Subject : 2.6.35-rc2 completely hosed on intel gfx? > > Submitter : Norbert Preining > > Date : 2010-06-06 11:55 (33 days old) > > Message-ID : <20100606115534.GA9399@gamma.logic.tuwien.ac.at> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12758253493158= 1&w=3D2 > = > Hmm. That one is the vt.c bug coupled with another problem, which in > turn got opened as a separate bugzilla entry: > = > http://bugzilla.kernel.org/show_bug.cgi?id=3D16252 > = > which in turn then got closed. I dunno. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16175 > > Subject : 2.6.35-rc1 system oom, many processes killed but memo= ry > > not free Submitter : andrew hendry > > Date : 2010-06-05 0:46 (34 days old) > > Message-ID : > > > > References : http://marc.info/?l=3Dlinux-kernel&m=3D12756987771493= 7&w=3D2 > = > Not a regression or a kernel bug at all. See the thread. Big ramdisk > filled up all of memory when it was filled by the builds. > = > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16145 > > Subject : Unable to boot unless "notsc" or "clocksource=3Dhpet"= , or > > acpi_pad disabling the TSC Submitter : Tom Gundersen > > Date : 2010-06-07 13:11 (32 days old) > > Handled-By : Venkatesh Pallipadi > > Len Brown > = > This is not a regression. See the full bugzilla details. The same > problem persists at least back to 2.6.30 with his config. So it's > somehow specific to his particular config use that requires "notsc" to > boot. > = > > 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_dirty+0x103/0x170 Submitter : Larry Finger > > > > Date : 2010-06-04 13:18 (35 days old) > > Handled-By : Jens Axboe > = > This looks like a duplicate of that 16312 bugzilla entry. Jens, has > this been resolved? > = > Linus