[Bug 1829652] Re: Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel

2019-07-08 Thread Damien Claisse
kernel 5.0.0-21-generic fixes the issue. Thanks for your help!

** Tags removed: disco verification-needed-disco
** Tags added: verification-done-disco

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Title:
  Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using
  5.0 kernel

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[Bug 1829652] Re: Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel

2019-05-19 Thread Damien Claisse
I obviously can't run apport-collect after a kernel panic, but will be
more than happy to upload any log file that could help troubleshooting.

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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Title:
  Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using
  5.0 kernel

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[Bug 1829652] Re: Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel

2019-05-19 Thread Damien Claisse
** Attachment added: "lspci-vvnn.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829652/+attachment/5264783/+files/lspci-vvnn.log

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Title:
  Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using
  5.0 kernel

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[Bug 1829652] [NEW] Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel

2019-05-19 Thread Damien Claisse
Public bug reported:

Hi,
I've recently upgraded my system to ubuntu 19.04, and kernel consistently 
panics when I boot a virtual machine using an SR-IOV VFIO virtual function. 
Could reproduce with 5.0.0-13-generic and 5.0.0-15-generic, doesn't happen with 
4.18.0-20-generic.

I'm using libvirt and VM is using KVM, XML snippet to delegate virtual
function to VM is:


  
  

  
  
  


As soon as I start the VM using "virsh start vm", kernel panics.

I'm using X550T intel NIC (lspci output: Ethernet controller: Intel
Corporation Ethernet Controller 10G X550T (rev 01)) on a Supermicro
X11SSH-CTF motherboard, with up to date bios and 4 virtual functions
(class/net/em1/device/sriov_numvfs = 4).

Given panic stack trace (see attachment), I've narrowed down the bug to
ixgbe_ipsec_vf_clear function in upstream ixgbe driver:
https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c#L840

When I comment its usage
(https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c#L734),
everything works as expected (I'm not using any ipsec feature). Didn't
try to fix the ixgbe_ipsec_vf_clear function though.

Please find attached a stack trace collected using IPMI serial-over-lan.

** Affects: linux (Ubuntu)
 Importance: Undecided
 Status: New

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Title:
  Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using
  5.0 kernel

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[Bug 1829652] Re: Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel

2019-05-19 Thread Damien Claisse
** Attachment added: "Panic stack trace"
   
https://bugs.launchpad.net/ubuntu/+source/kernel-package/+bug/1829652/+attachment/5264773/+files/panic_stack_trace.txt

** Description changed:

  Hi,
  I've recently upgraded my system to ubuntu 19.04, and kernel consistently 
panics when I boot a virtual machine using an SR-IOV VFIO virtual function. 
Could reproduce with 5.0.0-13-generic and 5.0.0-15-generic, doesn't happen with 
4.18.0-20-generic.
  
  I'm using libvirt and VM is using KVM, XML snippet to delegate virtual
  function to VM is:
  
- 
-   
-   
- 
-   
-   
-   
- 
+ 
+   
+   
+ 
+   
+   
+   
+ 
  
  As soon as I start the VM using "virsh start vm", kernel panics.
  
  I'm using X550T intel NIC (lspci output: Ethernet controller: Intel
- Corporation Ethernet Controller 10G X550T (rev 01)) on an Supermicro
+ Corporation Ethernet Controller 10G X550T (rev 01)) on a Supermicro
  X11SSH-CTF motherboard, with up to date bios and 4 virtual functions
  (class/net/em1/device/sriov_numvfs = 4).
  
  Given panic stack trace (see attachment), I've narrowed down the bug to
  ixgbe_ipsec_vf_clear function in upstream ixgbe driver:
  
https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c#L840
  
  When I comment its usage
  
(https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c#L734),
  everything works as expected (I'm not using any ipsec feature). Didn't
  try to fix the ixgbe_ipsec_vf_clear function though.
  
  Please find attached a stack trace collected using IPMI serial-over-lan.

** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)

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Title:
  Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using
  5.0 kernel

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