linux-kernel - context imbalance false positive sparse warnings

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Message-ID: <524f69650808191419j3e3a261dj9757ae4ea7a682bf@mail.gmail.com>
Date:	Tue, 19 Aug 2008 16:19:58 -0500
From:	"Steve French" <smfrench@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	sparse@...r.kernel.org
Subject: context imbalance false positive sparse warnings

Just building one directory of the kernel (./fs/*.c), ie "make bzImage
C=1" generates more than 200 sparse warnings similar to
        warning: context imbalance in 'set_task_ioprio': wrong count at exit

Even the simplest use cases throw this error e.g. fs/super.c line 162-164:

static void put_super(struct super_block *sb)
{
        spin_lock(&sb_lock);
        __put_super(sb);
        spin_unlock(&sb_lock);
}


It doesn't look like sparse has been fixed in a few months, unless the
sparse tool repository has moved from the
     /pub/scm / devel/sparse/sparse.git
directory on git.kernel.org

Is there a way to turn just this warning off (the thousands of context
imbalance messages generated by the kernel build make it harder to see
real errors which sparse could catch)?



-- 
Thanks,

Steve
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