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Kernel error message observed when deleting the mpls enabled VLAN and switch becomes unresponsive very rarely

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TitleKernel error message observed when deleting the mpls enabled VLAN and switch becomes unresponsive very rarely
Symptoms
Kernel error message observed when deleting the mpls enabled VLAN and switch becomes unresponsive very rarely
Dec 1 01:02:05 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:02:16 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:02:26 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:02:36 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:02:46 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:02:56 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:03:07 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2
Dec 1 01:03:17 X670G2-48x-4q Kern: unregister_netdevice: waiting for vl_TT_A132F to become free. Usage count = 2

 
Environment
  • EXOS 16.2
  • EXOS 21.1 
  • Summit G1 and G2 platforms
Cause
The issue is documented under CR xos0056457.
 
Resolution
For G1 platforms upgrade to a version of EXOS that includes the fix for CR xos0056457.
For G2 platforms CR xos0056457 is fixed through kernel upgrade from EXOS 22.2.
 
Additional notes

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