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authorCatalin Marinas <catalin.marinas@arm.com>2009-06-29 17:13:55 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2009-06-29 17:14:14 +0100
commit12de38b186c2af97bf0b4a1f907f766df46b1def (patch)
treede85488aa885f29933eec7e733b2e232401fd105
parentb6e687221eb840bacd4d4a991e5f8e7ed3ae910a (diff)
downloadop-kernel-dev-12de38b186c2af97bf0b4a1f907f766df46b1def.zip
op-kernel-dev-12de38b186c2af97bf0b4a1f907f766df46b1def.tar.gz
kmemleak: Inform kmemleak about pid_hash
Kmemleak does not track alloc_bootmem calls but the pid_hash allocated in pidhash_init() would need to be scanned as it contains pointers to struct pid objects. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
-rw-r--r--kernel/pid.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/pid.c b/kernel/pid.c
index 31310b5..5fa1db4 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -36,6 +36,7 @@
#include <linux/pid_namespace.h>
#include <linux/init_task.h>
#include <linux/syscalls.h>
+#include <linux/kmemleak.h>
#define pid_hashfn(nr, ns) \
hash_long((unsigned long)nr + (unsigned long)ns, pidhash_shift)
@@ -512,6 +513,12 @@ void __init pidhash_init(void)
pid_hash = alloc_bootmem(pidhash_size * sizeof(*(pid_hash)));
if (!pid_hash)
panic("Could not alloc pidhash!\n");
+ /*
+ * pid_hash contains references to allocated struct pid objects and it
+ * must be scanned by kmemleak to avoid false positives.
+ */
+ kmemleak_alloc(pid_hash, pidhash_size * sizeof(*(pid_hash)), 0,
+ GFP_KERNEL);
for (i = 0; i < pidhash_size; i++)
INIT_HLIST_HEAD(&pid_hash[i]);
}
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