linux-kernel - [PATCH 5.10 44/84] xfs: ensure xfs_errortag_random_default matches XFS_ERRTAG

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Message-Id: <20220705115616.609865501@linuxfoundation.org>
Date:   Tue,  5 Jul 2022 13:58:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Gao Xiang <hsiangkao@...hat.com>,
        Christoph Hellwig <hch@....de>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Amir Goldstein <amir73il@...il.com>
Subject: [PATCH 5.10 44/84] xfs: ensure xfs_errortag_random_default matches XFS_ERRTAG_MAX

From: Gao Xiang <hsiangkao@...hat.com>

commit b2c2974b8cdf1eb3ef90ff845eb27b19e2187b7e upstream.

Add the BUILD_BUG_ON to xfs_errortag_add() in order to make sure that
the length of xfs_errortag_random_default matches XFS_ERRTAG_MAX when
building.

Signed-off-by: Gao Xiang <hsiangkao@...hat.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Darrick J. Wong <djwong@...nel.org>
Signed-off-by: Darrick J. Wong <djwong@...nel.org>
Signed-off-by: Amir Goldstein <amir73il@...il.com>
Acked-by: Darrick J. Wong <djwong@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/xfs/xfs_error.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -293,6 +293,8 @@ xfs_errortag_add(
 	struct xfs_mount	*mp,
 	unsigned int		error_tag)
 {
+	BUILD_BUG_ON(ARRAY_SIZE(xfs_errortag_random_default) != XFS_ERRTAG_MAX);
+
 	if (error_tag >= XFS_ERRTAG_MAX)
 		return -EINVAL;