From: Paolo Abeni Date: Wed, 14 Jun 2023 08:31:42 +0000 (+0200) Subject: Merge branch 'net-sched-fix-race-conditions-in-mini_qdisc_pair_swap' X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3b0d2819522235d003df8da68caadc5d226d4c1d;p=linux.git Merge branch 'net-sched-fix-race-conditions-in-mini_qdisc_pair_swap' Peilin Ye says: ==================== net/sched: Fix race conditions in mini_qdisc_pair_swap() These 2 patches fix race conditions for ingress and clsact Qdiscs as reported [1] by syzbot, split out from another [2] series (last 2 patches of it). Per-patch changelog omitted. Patch 1 hasn't been touched since last version; I just included everybody's tag. Patch 2 bases on patch 6 v1 of [2], with comments and commit log slightly changed. We also need rtnl_dereference() to load ->qdisc_sleeping since commit d636fc5dd692 ("net: sched: add rcu annotations around qdisc->qdisc_sleeping"), so I changed that; please take yet another look, thanks! Patch 2 has been tested with the new reproducer Pedro posted [3]. [1] https://syzkaller.appspot.com/bug?extid=b53a9c0d1ea4ad62da8b [2] https://lore.kernel.org/r/cover.1684887977.git.peilin.ye@bytedance.com/ [3] https://lore.kernel.org/r/7879f218-c712-e9cc-57ba-665990f5f4c9@mojatatu.com/ ==================== Link: https://lore.kernel.org/r/cover.1686355297.git.peilin.ye@bytedance.com Signed-off-by: Paolo Abeni --- 3b0d2819522235d003df8da68caadc5d226d4c1d