Hi @all,
loading and unloading vhci-hcd in 3.2.63-longterm produces a warning in
syslog (Trying to free already-free IRQ 0). I know vhci-hcd is staging
but backporting as much as possible changes of usbip from 3.16.4
(without the switch to udev) changed nothing to this warning.
I tested kernel 3.16.4. This one don't show this behavior.
So:
I'm not good enough to find the right fix for this in the commits in
3.16.4. Maybe anybody has an idea? I cannot switch to 3.16.4 right now.
usbip # modprobe vhci-hcd
usbip # rmmod vhci-hcd vhci-hcd
tail -F /var/log/messages:
Oct 9 15:58:49 usbip kernel: usbip_core: module is from the staging
directory, the quality is unknown, you have been warned.
Oct 9 15:58:49 usbip kernel: usbip_core: USB/IP Core v1.0.0
Oct 9 15:58:49 usbip kernel: vhci_hcd: module is from the staging
directory, the quality is unknown, you have been warned.
Oct 9 15:58:49 usbip kernel: vhci_hcd vhci_hcd: USB/IP Virtual Host
Controller
Oct 9 15:58:49 usbip kernel: vhci_hcd vhci_hcd: new USB bus registered,
assigned bus number 3
Oct 9 15:58:49 usbip kernel: usb usb3: New USB device found,
idVendor=1d6b, idProduct=0002
Oct 9 15:58:49 usbip kernel: usb usb3: New USB device strings: Mfr=3,
Product=2, SerialNumber=1
Oct 9 15:58:49 usbip kernel: usb usb3: Product: USB/IP Virtual Host
Controller
Oct 9 15:58:49 usbip kernel: usb usb3: Manufacturer: Linux 3.2.63 vhci_hcd
Oct 9 15:58:49 usbip kernel: usb usb3: SerialNumber: vhci_hcd
Oct 9 15:58:49 usbip kernel: hub 3-0:1.0: USB hub found
Oct 9 15:58:49 usbip kernel: hub 3-0:1.0: 8 ports detected
Oct 9 15:58:49 usbip kernel: vhci_hcd: USB/IP 'Virtual' Host Controller
(VHCI) Driver v1.0.0
Oct 9 15:59:02 usbip kernel: vhci_hcd vhci_hcd: remove, state 1
Oct 9 15:59:02 usbip kernel: usb usb3: USB disconnect, device number 1
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: vhci_hcd: stop threads
Oct 9 15:59:02 usbip kernel: vhci_hcd: release socket
Oct 9 15:59:02 usbip kernel: vhci_hcd: disconnect device
Oct 9 15:59:02 usbip kernel: ------------[ cut here ]------------
Oct 9 15:59:02 usbip kernel: WARNING: at kernel/irq/manage.c:1214
__free_irq+0x74/0x130()
Oct 9 15:59:02 usbip kernel: Hardware name: VMware Virtual Platform
Oct 9 15:59:02 usbip kernel: Trying to free already-free IRQ 0
Oct 9 15:59:02 usbip kernel: Modules linked in: vhci_hcd(C-)
usbip_core(C) ipv6 e1000 isofs ide_tape ide_cd_mod cdrom usbhid hid
xhci_hcd ohci_hcd ssb uhci_hcd ehci_hcd usbcore usb_common psmouse
Oct 9 15:59:02 usbip kernel: Pid: 1725, comm: rmmod Tainted: G
C 3.2.63 #1
Oct 9 15:59:02 usbip kernel: Call Trace:
Oct 9 15:59:02 usbip kernel: [<c102a281>] warn_slowpath_common+0x65/0x7a
Oct 9 15:59:02 usbip kernel: [<c105677f>] ? __free_irq+0x74/0x130
Oct 9 15:59:02 usbip kernel: [<c102a2fa>] warn_slowpath_fmt+0x26/0x2a
Oct 9 15:59:02 usbip kernel: [<c105677f>] __free_irq+0x74/0x130
Oct 9 15:59:02 usbip kernel: [<c105689a>] free_irq+0x5f/0x77
Oct 9 15:59:02 usbip kernel: [<f808ef85>] usb_remove_hcd+0xe8/0x105
[usbcore]
Oct 9 15:59:02 usbip kernel: [<f8142c37>] vhci_hcd_remove+0x17/0x2d
[vhci_hcd]
Oct 9 15:59:02 usbip kernel: [<c121bcfc>] platform_drv_remove+0xc/0xe
Oct 9 15:59:02 usbip kernel: [<c121acac>]
__device_release_driver+0x45/0x7b
Oct 9 15:59:02 usbip kernel: [<c121acfa>] device_release_driver+0x18/0x23
Oct 9 15:59:02 usbip kernel: [<c121a9a4>] bus_remove_device+0x62/0x6d
Oct 9 15:59:02 usbip kernel: [<c1218ecf>] device_del+0xe9/0x12e
Oct 9 15:59:02 usbip kernel: [<c121c034>] platform_device_del+0x15/0x4b
Oct 9 15:59:02 usbip kernel: [<c121c22f>]
platform_device_unregister+0xb/0x15
Oct 9 15:59:02 usbip kernel: [<f81439e5>] vhci_hcd_exit+0xd/0x19
[vhci_hcd]
Oct 9 15:59:02 usbip kernel: [<c104d924>] sys_delete_module+0x171/0x1d8
Oct 9 15:59:02 usbip kernel: [<c107790f>] ? remove_vma+0x41/0x47
Oct 9 15:59:02 usbip kernel: [<c1078509>] ? do_munmap+0x1ee/0x206
Oct 9 15:59:02 usbip kernel: [<c13011b5>] syscall_call+0x7/0x7
Oct 9 15:59:02 usbip kernel: ---[ end trace b98bd8e106bc498c ]---
Oct 9 15:59:02 usbip kernel: vhci_hcd vhci_hcd: USB bus 3 deregistered
See also:
https://bugzilla.kernel.org/show_bug.cgi?id=85961
Thank you!
--
der tom
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