From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 26 Mar 2026 01:14:19 +0000 (-0700)
Subject: Merge tag 'rcu-fixes.v7.0-20260325a' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Tag: v7.0-rc6~44
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=aba9da0905f14106b368e0abf75220e744d27626;p=thirdparty%2Fkernel%2Flinux.git

Merge tag 'rcu-fixes.v7.0-20260325a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU fixes from Boqun Feng:
 "Fix a regression introduced by commit c27cea4416a3 ("rcu: Re-implement
  RCU Tasks Trace in terms of SRCU-fast"): BPF contexts can run with
  preemption disabled or scheduler locks held, so call_srcu() must work
  in all such contexts.

  Fix this by converting SRCU's spinlocks to raw spinlocks and avoiding
  scheduler lock acquisition in call_srcu() by deferring to an irq_work
  (similar to call_rcu_tasks_generic()), for both tree SRCU and tiny
  SRCU.

  Also fix a follow-on lockdep splat caused by srcu_node allocation
  under the newly introduced raw spinlock by deferring the allocation to
  grace-period worker context"

* tag 'rcu-fixes.v7.0-20260325a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
  srcu: Use irq_work to start GP in tiny SRCU
  rcu: Use an intermediate irq_work to start process_srcu()
  srcu: Push srcu_node allocation to GP when non-preemptible
  srcu: Use raw spinlocks so call_srcu() can be used under preempt_disable()
---

aba9da0905f14106b368e0abf75220e744d27626