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| author | Tejun Heo <tj@kernel.org> | 2026-06-24 12:40:51 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-06-24 12:40:51 -1000 |
| commit | 115d1ce989747045bd7745c7ab020982660c7e42 (patch) | |
| tree | 53221f0c9533911d5f498302bdca7015d144875e /kernel/sched | |
| parent | 5c94a3ab6ed94ff1257631a49893a535098be0b6 (diff) | |
| download | linux-next-115d1ce989747045bd7745c7ab020982660c7e42.tar.gz linux-next-115d1ce989747045bd7745c7ab020982660c7e42.zip | |
sched_ext: Annotate ksyncs with __rcu in alloc/free_kick_syncs()
scx_kick_syncs is a per-CPU __rcu pointer, so per_cpu_ptr() returns struct
scx_kick_syncs __rcu **. alloc_kick_syncs() and free_kick_syncs() stored it
in a plain struct scx_kick_syncs **ksyncs, which sparse flags as an __rcu
address-space mismatch. Annotate ksyncs to match. Its accesses already go
through rcu_*_pointer().
Fixes: 987e00035c0e ("sched_ext: Rename pnt_seq to kick_sync")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606122315.pbnDHP0n-lkp@intel.com/
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/ext/ext.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched/ext/ext.c b/kernel/sched/ext/ext.c index 5418e6357249..aecbb021d6d7 100644 --- a/kernel/sched/ext/ext.c +++ b/kernel/sched/ext/ext.c @@ -5687,7 +5687,7 @@ static void free_kick_syncs(void) int cpu; for_each_possible_cpu(cpu) { - struct scx_kick_syncs **ksyncs = per_cpu_ptr(&scx_kick_syncs, cpu); + struct scx_kick_syncs __rcu **ksyncs = per_cpu_ptr(&scx_kick_syncs, cpu); struct scx_kick_syncs *to_free; to_free = rcu_replace_pointer(*ksyncs, NULL, true); @@ -6668,7 +6668,7 @@ static int alloc_kick_syncs(void) * can exceed percpu allocator limits on large machines. */ for_each_possible_cpu(cpu) { - struct scx_kick_syncs **ksyncs = per_cpu_ptr(&scx_kick_syncs, cpu); + struct scx_kick_syncs __rcu **ksyncs = per_cpu_ptr(&scx_kick_syncs, cpu); struct scx_kick_syncs *new_ksyncs; WARN_ON_ONCE(rcu_access_pointer(*ksyncs)); |