This series fixes a schedule lifetime race in `act_gate` between the
control-plane replace path and the running hrtimer callback (gate_timer_func).

Changes since v4:
- Drop the gate_clockid_to_offset helper, validate clockid once, and set
  tk_offset in one place.
- Seed missing attrs from the old params when entries are replaced
- Reimplemented the timer cancel from RCU snapshot and cancel before taking tcf_lock.
- Reuse a single protected deref under tcf_lock
- Compare old/new values directly in gate_timer_needs_cancel()
- Cleanup no longer assumes rtnl_lock

Paul Moses (1):
  net/sched: act_gate: snapshot parameters with RCU on replace

 include/net/tc_act/tc_gate.h |  33 ++++-
 net/sched/act_gate.c         | 266 ++++++++++++++++++++++++++---------
 2 files changed, 228 insertions(+), 71 deletions(-)

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2.52.GIT