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| author | Weiming Shi <bestswngs@gmail.com> | 2026-09-02 23:52:31 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-05 12:40:05 -0700 |
| commit | e6662f2100f8d33b0f4d0047c219efd6bba186ea (patch) | |
| tree | 2c73792c48a255b313d83344484efdbb259fcff3 /scripts/basic | |
| parent | 2b4707a149a55e8fa75c9ef32b359d60f470a566 (diff) | |
| download | linux-e6662f2100f8d33b0f4d0047c219efd6bba186ea.tar.gz linux-e6662f2100f8d33b0f4d0047c219efd6bba186ea.zip | |
net/sched: defer qdisc freeing after failed creation
An RTM_NEWQDISC request can make clsact bind a populated shared ingress
block during ->init(), publishing an embedded mini_Qdisc to lockless
readers. If the same request has an invalid TCA_RATE, estimator setup
fails after ->init(); the unwind removes the pointer but synchronously
frees its containing qdisc while tc_run() may still hold it.
Retire failed qdiscs through the same RCU helper as normal destruction.
Inline the synchronous free into the callback now that no direct callers
remain.
Fixes: 51ab2994c387 ("net: sched: allow ingress and clsact qdiscs to share filter blocks")
Reported-by: Xiang Mei <xmei5@asu.edu>
Link: https://lore.kernel.org/netdev/20260805102505.740806-1-david.lee@trailofbits.com/
Signed-off-by: Weiming Shi <bestswngs@gmail.com>
Link: https://patch.msgid.link/20260902155231.2149915-2-bestswngs@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'scripts/basic')
0 files changed, 0 insertions, 0 deletions