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futex: Tell kmemleak we're not leaking __futex_queues

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Kmemleak doesn't know about runtime_const stuff and figures we're leaking
__futex_queues. So add this little annotation to tell it all is well.

Fixes: b78b0b6582 ("futex: Use runtime constants for __futex_hash() hot path")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202608071053.6db6276e-lkp@intel.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260807152353.GP687043@noisy.programming.kicks-ass.net
This commit is contained in:
Peter Zijlstra 2026-08-07 17:23:53 +02:00
parent 58ae9eb825
commit fcb8ada128
1 changed files with 2 additions and 0 deletions
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2
kernel/futex/core.c
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@ -45,6 +45,7 @@
#include <linux/rseq.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/kmemleak.h>
#include <vdso/futex.h>
@ -2028,6 +2029,7 @@ static int __init futex_init(void)
order = get_order(size);
__futex_queues = kcalloc(nr_node_ids, sizeof(*__futex_queues), GFP_KERNEL);
kmemleak_not_leak(__futex_queues);
runtime_const_init(shift, __futex_shift);
runtime_const_init(mask, __futex_mask);