* Adrian Bunk <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>
> Frédéric Riss <[EMAIL PROTECTED]>
> Marcus Better <[EMAIL PROTECTED]>
> Handled-By : Eric W. Biederman <[EMAIL PROTECTED]>
> 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.
Ingo
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