On Tue, Apr 7, 2009 at 10:10 AM, Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx> wrote: > Trenton D. Adams wrote: >> On Tue, Apr 7, 2009 at 10:16 AM, Stefan Richter >> <stefanr@xxxxxxxxxxxxxxxxx> wrote: >>> Linus Torvalds wrote: >>>> On Mon, 6 Apr 2009, Rafael J. Wysocki wrote: >>>>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13018 >>>>> Subject : 2.6.29 on MacBook 2,1 fails to reboot > ... >>>> The bug _sounds_ like some deadlock due to lock problems - the shutdown >>>> path often triggers locks that no other path really cares about. And we >>>> had some lock problems in the sound subsystem that got fixed post-2.6.28, >>>> for example. >>>> >>>> And it looks like the problem is somewhere in sound shutdown: >>>> >>>> 12181 delete_module("snd_hda_codec", O_RDONLY|O_EXCL) = -1 EAGAIN (Resource temporarily unavailable) <0.000011> >>>> >>>> So commits like 91054598f794fb5d8a0b1e747ff8e2e8fc2115b3 ("ALSA: pcm_oss, >>>> fix locking typo") might explain it. > ... >>> could it be the same as this one? >>> http://bugzilla.kernel.org/show_bug.cgi?id=12321 >>> "System hangs when unloading alsa modules" >>> http://bugs.gentoo.org/show_bug.cgi?id=253535 >>> "System hangs when unloading alsa modules on Kernel >2.6.28" > ... >> The first one looks similar, if not identical. The second one >> doesn't, because my problem happens on 2.6.29 only, not 2.6.28. > > The Gentoo bug entry too is about a regression _after_ 2.6.28. :-) > I.e. 2.6.28.y. are unaffected. It's actually just the downstream > duplicate of the kernel.org bug entry. > >> Either way, the unload problem with the module didn't happen in >> 2.6.28. > > Interdependencies between ALSA modules have changed. The Gentoo init > scripts attempted to unload them in an order which deadlocked modprobe > due to dependencies. The fix for Gentoo is to just not unload the > modules on system shutdown. My Gentoo/amd64 Mac mini was affected by > this too; fixed by userland update. > > (Added Cc to tiwai@xxxxxxx) > -- > Stefan Richter > -=====-=-=== -=-= -==-= > http://arcgraph.de/sr/ > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > With the imac(kernel 2.6.29) /sbin/shutdown -h now (works) but /sbin/reboot hangs -- Justin P. Mattock -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
