Messages in this thread |  | | | Date | Fri, 05 Dec 2008 12:02:03 +0300 | | From | Michael Tokarev <> | | Subject | Re: [PATCH] virtio: make PCI devices take a virtio_pci module ref |
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Jiri Slaby wrote: > On 12/04/2008 01:44 PM, Mark McLoughlin wrote: >> Nothing takes a ref on virtio_pci, so even if you have >> devices in use, rmmod will attempt to unload the module. > > It unbinds the device properly as any other driver. So what's the problem here?
Here's what we get when rmmod'ing (a zero-refcounted but in use) virtio_pci (I did it by a chance, cut-n-pasted the wrong line):
WARNING: at drivers/base/core.c:122 device_release+0x5f/0x70() Device 'virtio1' does not have a release() function, it is broken and must be fixed. Modules linked in: ext3 jbd mbcache acpiphp dock pci_hotplug virtio_net virtio_blk virtio_pci(-) virtio_ring virtio
Pid: 361, comm: rmmod Tainted: G S 2.6.27-i686smp #2.6.27.7 [<c012b81f>] warn_slowpath+0x6f/0xa0 [<c0110030>] prepare_set+0x30/0x80 [<c012067e>] __wake_up+0x3e/0x60 [<c01d1d25>] release_sysfs_dirent+0x45/0xb0 ...
>> Reported-by: Michael Tokarev <mjt@tls.msk.ru>
It was in my original report to kvm@vger.
Thanks!
/mjt
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