Messages in this thread | | | Date | Mon, 07 Dec 2009 10:24:02 -0800 | From | Yinghai Lu <> | Subject | Re: [BISECTED, REGRESSION] Successful resume from suspend but freezes after I/O |
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Volker Lanz wrote: > Hi, > > updating to my distro's new 2.6.31 kernel on an x86_64 quad core machine with > 6 GB of RAM I noticed resuming from suspend still worked as before, but the > machine will now reproducably freeze (have to hard reset) afterwards as soon > as I do something disk I/O heavy, though the problem is probably not related > to disk activity at all. > > A current mainline 2.6.32 checkout shows the same behaviour. > > I git-bisected the problem to this commit: > > > ----------------------------------------------------------------------------- > commit 78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742 > Author: Yinghai Lu <yinghai@kernel.org> > Date: Thu Mar 12 22:36:01 2009 -0700 > > x86: make e820_update_range() handle small range update > > Impact: enhance e820 code to handle more cases > > Try to handle new range which could be covered by one entry. > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > Cc: jbeulich@novell.com > LKML-Reference: <49B9F0C1.10402@kernel.org> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > ----------------------------------------------------------------------------- > > > A kernel built from this revision does not boot, so the first booting kernel > to show the problem actually seems to be: > > > ----------------------------------------------------------------------------- > commit 6d7942dc2a70a7e74c352107b150265602671588 > Author: Yinghai Lu <yinghai@kernel.org> > Date: Sat Mar 14 14:32:41 2009 -0700 > > x86: fix 64k corruption-check > > Impact: fix boot crash > > Need to exit early if the addr is far above 64k. > > The crash got exposed by: > > 78a8b35: x86: make e820_update_range() handle small range update > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > Cc: <stable@kernel.org> > LKML-Reference: <49BC2279.2030101@kernel.org> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > ----------------------------------------------------------------------------- > > > The last kernel to work without problems thus seems to be this one: > > > ----------------------------------------------------------------------------- > commit 773e673de27297d07d852e7e9bfd1a695cae1da2 > Author: Yinghai Lu <yinghai@kernel.org> > Date: Thu Mar 12 21:35:18 2009 -0700 > > x86: fix e820_update_range() > > Impact: fix left range size on head > > | commit 5c0e6f035df983210e4d22213aed624ced502d3d > | x86: fix code paths used by update_mptable > | Impact: fix crashes under Xen due to unrobust e820 code > > fixes one e820 bug, but introduces another bug. > > Need to update size for left range at first in case it is header. > > also add __e820_add_region take more parameter. > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > Cc: jbeulich@novell.com > LKML-Reference: <49B9E286.502@kernel.org> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > ----------------------------------------------------------------------------- > > > The problem is 100% reproducable on this machine: Resuming and then copying > /usr/ to $HOME will freeze after a few hundred MB have been copied. Earlier > kernels worked fine for the last couple of months. > > What additional information is required to help diagnose and hopefully fix the > problem?
whole boot log with CONFIG_PCI_DEBUG and debug on command line.
YH
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