[PATCH AUTOSEL 4.19 01/10] NFSv4 only print the label when its queried

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From: Olga Kornievskaia <kolga@xxxxxxxxxx>

[ Upstream commit 2c52c8376db7160a1dd8a681c61c9258405ef143 ]

When the bitmask of the attributes doesn't include the security label,
don't bother printing it. Since the label might not be null terminated,
adjust the printing format accordingly.

Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/nfs/nfs4xdr.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 0a5cae8f8aff9..8a61dc21d3d68 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4294,10 +4294,11 @@ static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
 		} else
 			printk(KERN_WARNING "%s: label too long (%u)!\n",
 					__func__, len);
+		if (label && label->label)
+			dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
+				__func__, label->len, (char *)label->label,
+				label->len, label->pi, label->lfs);
 	}
-	if (label && label->label)
-		dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
-			(char *)label->label, label->len, label->pi, label->lfs);
 	return status;
 
 out_overflow:
-- 
2.34.1




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