Messages in this thread |  | | | Subject | Re: 3.5.0-rc5: BUG: soft lockup - CPU#0 stuck for 22s | | From | Benjamin Herrenschmidt <> | | Date | Mon, 02 Jul 2012 14:50:49 +1000 |
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On Sun, 2012-07-01 at 00:18 -0700, Christian Kujau wrote: > Hi, > > while trying to upgrade from 3.4.0 to 3.5.0-rc5 on this Powerbook G4 > (powerpc 32 bit), this happens during booting: > > -------------- > usb 2-1: new full-speed USB device number 4 using ohci_hcd > SCSI subsystem initialized > scsi0 : SBP-2 IEEE-1394 > scsi1 : SBP-2 IEEE-1394 > firewire_sbp2 fw1.0: logged in to LUN 0000 (0 retries) > scsi 0:0:0:0: Direct-Access Ext Hard Disk PQ: 0 ANSI: 4
Interesting... I observed something roughly similar on a dual G4 the other day associated with a 30s to 1mn pause during boot. RCU was complaining loudly.
In my case, it did continue booting normally, is that the case for you ?
Also if I compile the kernel without CONFIG_SMP, it did go away as well, do you observe that too ?
I don't have a spare cycle to investigate this problem this week I'm afraid, it might help if you could try a bisection though.
Cheers, Ben.
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