Messages in this thread | | | Date | Sat, 26 May 2007 19:12:31 +0200 | From | Folkert van Heusden <> | Subject | Re: [2.6.21.1] soft lockup when removing netconsole module |
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> > > > > > Seems to be hrtimers related - CC'ed Thomas. > > > > > I doubt that. The tick interrupt just finds out, that the machine is > > > > > stuck in rmmod. > > > > > > > Also the rmmod hangs and would not exit even with kill -9. It also > > > > > > > sucks up 100% cpu. > > > > > Can you please enable CONFIG_PROVE_LOCKING ? > > > > Luckily I already had :-) > > > > Here is its output: > > > So there is no output from lockdep, during the rmmod hang ? The rmmod > > Nope, just other subsystems (nfs, usb) minutes before that. > Hmm. Can you provide the output of that ? Might be some stale stuff > leading to the hang later.
It is output like: [ 843.122782] usb 7-2: usbfs: USBDEVFS_CONTROL failed cmd newhidups rqt 161 rq 1 len 10 ret -110 [ 1292.121131] usb 7-2: usbfs: USBDEVFS_CONTROL failed cmd newhidups rqt 161 rq 1 len 10 ret -110
and about the nfs server temporarily not available. Please note that I did not do the rmmod from a nfs mountpoint.
Folkert van Heusden
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