From: Paolo Abeni Date: Thu, 6 Aug 2026 13:25:15 +0000 (+0200) Subject: Merge branch 'net-sched-fix-qdisc-graft-hierarchy-validation' X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=cd0784790d921ff4f7438d3b7ccda86068c8b766;p=thirdparty%2Fkernel%2Flinux.git Merge branch 'net-sched-fix-qdisc-graft-hierarchy-validation' Zijie Huang says: ==================== net/sched: fix qdisc graft hierarchy validation The qdisc create-and-graft path allows users to keep attaching new classful qdiscs under an already deep parent hierarchy. Such a hierarchy can later be walked recursively and exhaust the kernel stack. This series stores the qdisc hierarchy depth in struct Qdisc and checks it when a qdisc is grafted. New child qdiscs are rejected once the parent is already at the maximum allowed depth. It also adds tdc coverage for the maximum allowed depth and rejection above it. ==================== Link: https://patch.msgid.link/cover.1785434373.git.milkory@outlook.com Signed-off-by: Paolo Abeni --- cd0784790d921ff4f7438d3b7ccda86068c8b766