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  1. Fast Datapath Product
  2. FDP-2867

OVS calls rtnl_delete_link() with wrong lock

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    • Icon: Epic Epic
    • Resolution: Unresolved
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    • ovs-dpdk
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    • OVS calls rtnl_delete_link() with wrong lock
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      Please mark each item below with ( / ) if completed or ( x ) if incomplete:

      ( ) The acceptance criteria defined below are met.

      Given the openvswitch kernel module is loaded on a RHEL-10 kernel compiled with small RTNL support,

      When an OVS vport is deleted,

      Then the correct per-netns lock is held and no lockdep warnings are produced.

      ( ) The epics work is available in a downstream build (nightly/Async or other)

      ( ) All cards under the epic have been moved to Done

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      Please mark each item below with ( / ) if completed or ( x ) if incomplete: ( ) The acceptance criteria defined below are met. Given the openvswitch kernel module is loaded on a RHEL-10 kernel compiled with small RTNL support, When an OVS vport is deleted, Then the correct per-netns lock is held and no lockdep warnings are produced. ( ) The epics work is available in a downstream build (nightly/Async or other) ( ) All cards under the epic have been moved to Done
    • rhel-10
    • None
    • rhel-net-ovs-dpdk
    • 100% To Do, 0% In Progress, 0% Done
    • ssg_networking

      This epic tracks all the effort needed to deliver the solution related to the bug described below.
      There are a couple of callers of rtnl_delete_link() in openvswitch which all call the function while holding the RTNL. However, the core caller (rtnl_dellink) has moved to rtnl_net_lock(), so when the kernel is compiled with the small RTNL enabled, the locking is no longer congruent.

              ovsdpdk-bot ovsdpdk bot
              tohojo Toke Høiland-Jørgensen
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                Created:
                Updated: