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mm/kmemleak: replace strncpy() with strscpy()

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Replace the depreciated[1] strncpy() calls with strscpy().  Uses of
object->comm do not depend on the padding side-effect.

Link: https://github.com/KSPP/linux/issues/90 [1]
Link: https://lkml.kernel.org/r/20240710001300.work.004-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kees Cook 2024-07-09 17:13:08 -07:00 committed by Andrew Morton
parent 53dabce265
commit 0b84780134
1 changed files with 3 additions and 3 deletions
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6
mm/kmemleak.c
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@ -657,10 +657,10 @@ static struct kmemleak_object *__alloc_object(gfp_t gfp)
/* task information */
if (in_hardirq()) {
object->pid = 0;
strncpy(object->comm, "hardirq", sizeof(object->comm));
strscpy(object->comm, "hardirq");
} else if (in_serving_softirq()) {
object->pid = 0;
strncpy(object->comm, "softirq", sizeof(object->comm));
strscpy(object->comm, "softirq");
} else {
object->pid = current->pid;
/*
@ -669,7 +669,7 @@ static struct kmemleak_object *__alloc_object(gfp_t gfp)
* dependency issues with current->alloc_lock. In the worst
* case, the command line is not correct.
*/
strncpy(object->comm, current->comm, sizeof(object->comm));
strscpy(object->comm, current->comm);
}
/* kernel backtrace */