Messages in this thread |  | | | Date | Fri, 26 Dec 2008 16:48:27 -0800 | | From | Andrew Morton <> | | Subject | Re: Boot hang after io scheduler registration |
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On Sat, 27 Dec 2008 00:35:19 +0100 Kai Ruhnau <kai@tragetaschen.dyndns.org> wrote:
> Hi, > > I have a somewhat weird hang problem when booting all recent kernel > versions including 2.6.28: When I boot my system and let grub start the > kernel after a 5 second timeout, the system will hang after registering > the io schedulers (see below). However, when I choose the default grub > entry manually by pressing ENTER in the menu, the kernel does not hang > and continues the normal booting process. > > Below, you can find the place of the hang and an excerpt of the messages > that follow on a normal boot as well as some system information. > > Thanks for your time on this problem. > > Best regards > Kai > > # dmesg > ... > [ 0.309379] io scheduler noop registered > [ 0.309473] io scheduler anticipatory registered > [ 0.309569] io scheduler deadline registered > [ 0.309679] io scheduler cfq registered (default) > > Hang happens here. > > Continuation when pressing ENTER in grub: > > [ 0.414098] pci 0000:01:00.0: Boot video device > [ 0.417068] pcieport-driver 0000:00:02.0: setting latency timer to 64 > [ 0.417097] pcieport-driver 0000:00:02.0: found MSI capability > [ 0.417222] pcieport-driver 0000:00:02.0: irq 319 for MSI/MSI-X > [ 0.417231] pci_express 0000:00:02.0:pcie00: allocate port service > [ 0.417294] pci_express 0000:00:02.0:pcie03: allocate port service > [ 0.417376] pcieport-driver 0000:00:06.0: setting latency timer to 64 > [ 0.417403] pcieport-driver 0000:00:06.0: found MSI capability > [ 0.417523] pcieport-driver 0000:00:06.0: irq 318 for MSI/MSI-X > [ 0.417532] pci_express 0000:00:06.0:pcie00: allocate port service > [ 0.417580] pci_express 0000:00:06.0:pcie03: allocate port service > ... >
Please add `initcall_debug' to the kernel boot command line. That should tell us which initialisation function is getting stuck.
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