id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 1829,"Kernel Bug ""Scheduling with irqs disabled""",Brendan Grieve,,"My Host: - Quad Core 2.4Ghz Intel CPU 8 Gb Memory No Hard Drive (Diskless fat client) Ubuntu Hardy Heron 8.04 amd64 (Ubuntu Studio) Kernel: 2.6.24-19-rt My Guests: Ubuntu Hardy Heron 8.04 i386 I get this constantly in the hosts 'dmesg': - {{{ ----------------------------- [293528.625941] BUG: scheduling with irqs disabled: softirq-timer/2/0x00000000/32 [293528.625950] caller is rt_spin_lock_slowlock+0xae/0x1c0 [293528.625954] Pid: 32, comm: softirq-timer/2 Tainted: P 2.6.24-19-rt #1 [293528.625956] [293528.625957] Call Trace: [293528.625978] [] schedule+0xe0/0x110 [293528.625983] [] rt_spin_lock_slowlock+0xae/0x1c0 [293528.626001] [] lock_timer_base+0x34/0x70 [293528.626008] [] __mod_timer+0x37/0xe0 [293528.626021] [] :vboxdrv:VBoxDrvLinuxGipTimer+0x0/0xf0 [293528.626028] [] :vboxdrv:VBoxDrvLinuxGipTimer+0x79/0xf0 [293528.626035] [] run_timer_softirq+0x296/0x520 [293528.626050] [] ksoftirqd+0x121/0x2a0 [293528.626057] [] ksoftirqd+0x0/0x2a0 [293528.626062] [] ksoftirqd+0x0/0x2a0 [293528.626068] [] kthread+0x4b/0x80 [293528.626074] [] child_rip+0xa/0x12 [293528.626087] [] kthread+0x0/0x80 [293528.626091] [] child_rip+0x0/0x12 ----------------------------------- }}} Kernel is tainted with the NVidia Module. The host is running a real-time kernel, which may be the reason its coming up. I'm sure I remember reading somewhere that the warning comes up when the calling program is doing something that _could_ be done a different (and thus more real-time) friendly way. Unfortunately I just can't find that link at the moment. It doesn't break Virtualbox, and apart from dmesg being constantly filled with this, I havn't noticed any speed difference between a non-realtime and a realtime kernel so its really a FYI. - Brendan",defect,closed,other,VirtualBox 1.6.2,fixed,,,Linux,Linux