[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] HVM bug: system crashes after offline online a vcpu
On Wed, 2012-12-19 at 19:24 +0000, Konrad Rzeszutek Wilk wrote: > # > # > # # echo 0 > /sys/devices/system/cpu/cpu3/online[J[44Decho 0 > > /sys/devices/system/cpu/cpu3/online [39D1 > > /sys/devices/system/cpu/cpu3/online[38D > /sys/devices/system/cpu/cpu3/online > [ 73.324141] installing Xen timer for CPU 3 > [ 73.324236] cpu 3 spinlock event irqc_intel fbcon scsi_mod tileblit font > bitblit softcursor atl1c drm_kms_helper video xen_blkfront xen_netfront > fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd mperf > [ 73.325026] Pid: 0, comm: swapper/3 Not tainted 3.7.0upstream #1 > [ 73.325033] Call Trace: > [ 73.325047] [<ffffffff810c2d1d>] __schedule_bug+0x4d/0x60 > [ 73.325058] [<ffffffff816359e2>] __schedule+0x6b2/0x7c0 > [ 73.325074] [<ffffffff81043d5d>] ? xen_force_evtchn_callback+0xd/0x10 > [ 73.325086] [<ffffffff81635bb4>] schedule+0x24/0x70 > [ 73.325097] [<ffffffff81056de9>] cpu_idle+0xc9/0xe0 > [ 73.325112] [<ffffffff810445b9>] ? xen_irq_enable_direct_reloc+0x4/0x4 > [ 73.325116] BUG: unable to handle kernel NULL pointer dereference[ > 73.325122] [<ffffffff8162572b>] cpu_bringup_and_idle+0xe/0x10 > The thread is a bit off-topic now since we're talking about PV at the moment... Please see cs 41bd956de3dfdc3a43708fe2e0c8096c69064a1e, it seems that the imbalance still exists with CONFIG_PREEMPT_COUNT=y. And I didn't manage to reproduce the NULL pointer deference. Wei. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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