Messages in this thread | | | Date | Wed, 28 Mar 2007 14:19:58 +0200 | From | Ingo Molnar <> | Subject | Re: [4/5] 2.6.21-rc5: known regressions |
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* Adrian Bunk <bunk@stusta.de> wrote:
> Subject : second suspend to disk in a row results in an oops (MSI) > References : http://lkml.org/lkml/2007/3/17/43 > http://lkml.org/lkml/2007/3/22/150 > http://lkml.org/lkml/2007/3/26/205 > http://lkml.org/lkml/2007/3/26/76 > Submitter : Thomas Meyer <thomas@m3y3r.de> > Frédéric Riss <frederic.riss@gmail.com> > Marcus Better <marcus@better.se> > Handled-By : Eric W. Biederman <ebiederm@xmission.com> > Patch : http://lkml.org/lkml/2007/3/24/136 > Status : patch was suggested
i can reproduce a crash on the second suspend-to-ram, on a T60. I get a crash here:
#ifdef CONFIG_PM static void __pci_restore_msi_state(struct pci_dev *dev) { int pos; u16 control; struct msi_desc *entry;
if (!dev->msi_enabled) return;
entry = get_irq_msi(dev->irq); pos = entry->msi_attrib.pos; <-------- crash on NULL dereference
i.e. 'entry' is NULL after get_irq_msi(). (i can see the crash only on the VGA screen so no dump of it available. Can write down more info if it's helpful.)
I have tried Eric's patch above but now i always get a hang after "system 00:00: resuming", already upon the first suspend-resume. Not even the NMI watchdog can get the system out of that hang.
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