Commit 04e4bd1c authored by Catalin Marinas's avatar Catalin Marinas Committed by Trond Myklebust

nfs: Ignore kmemleak false positive in nfs_readdir_make_qstr

Strings allocated via kmemdup() in nfs_readdir_make_qstr() are
referenced from the nfs_cache_array which is stored in a page cache
page. Kmemleak does not scan such pages and it reports several false
positives. This patch annotates the string->name pointer so that
kmemleak does not consider it a real leak.
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Cc: Bryan Schumaker <bjschuma@netapp.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 94f58df8
......@@ -34,6 +34,7 @@
#include <linux/mount.h>
#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <linux/kmemleak.h>
#include "delegation.h"
#include "iostat.h"
......@@ -238,6 +239,11 @@ int nfs_readdir_make_qstr(struct qstr *string, const char *name, unsigned int le
string->name = kmemdup(name, len, GFP_KERNEL);
if (string->name == NULL)
return -ENOMEM;
/*
* Avoid a kmemleak false positive. The pointer to the name is stored
* in a page cache page which kmemleak does not scan.
*/
kmemleak_not_leak(string->name);
string->hash = full_name_hash(name, len);
return 0;
}
......
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