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cgroup: Fixes for v7.3-rc1

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- After cgroup.kill was written to a cgroup, every child cloned into it
   with CLONE_INTO_CGROUP was spuriously killed because the fork path
   snapshotted the kill counter before resolving the target cgroup.
 
 - Releasing an isolated cpuset partition dropped the isolation of CPUs
   isolated on the kernel command line.
 
 - Selftest and documentation fixes.
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Merge tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:

 - After cgroup.kill was written to a cgroup, every child cloned into it
   with CLONE_INTO_CGROUP was spuriously killed because the fork path
   snapshotted the kill counter before resolving the target cgroup

 - Releasing an isolated cpuset partition dropped the isolation of CPUs
   isolated on the kernel command line

 - Selftest and documentation fixes

* tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  selftests/cgroup: test clone3() into a previously killed cgroup
  cgroup: fix spurious SIGKILL of CLONE_INTO_CGROUP children
  selftests/cgroup: Add test for preserving boot-isolated CPUs
  cgroup/cpuset: Preserve boot-isolated CPUs on partition release
  selftests/cgroup: Drop invalid boot isolation comparison
  docs: cgroup-v2: fix misc.events key format description
  selftests/cgroup: Fix cg_run_in_subcgroups ignoring arg parameter
  selftests/cgroup: set the test plan after the setup checks
This commit is contained in:
Linus Torvalds 2026-08-31 14:20:32 -07:00
commit c3b510de42
14 changed files with 159 additions and 32 deletions
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