This bug is awaiting verification that the linux/5.15.0-142.152 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux' to 'verification-done-jammy-linux'. If the problem still exists, change the tag 'verification-needed-jammy- linux' to 'verification-failed-jammy-linux'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-v2 verification-needed-jammy-linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2109601 Title: [UBUNTU 22.04] net/smc: fix neighbour and rtable leak in smc_ib_find_route() Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: Invalid Status in linux source package in Jammy: Fix Committed Bug description: [Impact] net/smc: fix neighbour and rtable leak in smc_ib_find_route() In smc_ib_find_route(), the neighbour found by neigh_lookup() and rtable resolved by ip_route_output_flow() are not released or put before return. It may cause the refcount leak, so fix it. [Fix] Cherry pick the fix commit in Jammy: - 2ddc0dd7fec8 net/smc: fix neighbour and rtable leak in smc_ib_find_route() [Test Plan] Compile tested only. [Where Problems Could Occur] The fix affects the SMC-R RDMA route resolution subsystem. An issue with this fix may lead to incorrect handling of reference counting neighbor and routing table objects during RDMA path establishment. A user might experience problems such asfailed RDMA connection setups resulting in fallback to TCP even on capable hardware. --- Description: net/smc: fix neighbour and rtable leak in smc_ib_find_route() ----------------------------------------------------------------------------- Symptom: The handshake device gets hung during the cleanup after the SMCR-v2 workload Problem: In smc_ib_find_route(), the neighbour found by neigh_lookup() and rtable resolved by ip_route_output_flow() are not released or put before return. It may cause the refcount leak. Solution: Release the neighbour found via neigh_release() Upstream-ID: 2ddc0dd7fec86ee53b8928a5cca5fbddd4fc7c06 Author: [email protected] Component: kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/2109601/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
