From: Miklos Szeredi <mszeredi@redhat.com>
Date: Thu, 21 Jul 2022 16:06:18 +0200
Subject: fuse: limit nsec
Git-commit: 47912eaa061a6a81e4aa790591a1874c650733c0
Patch-mainline: v6.0-rc1
References: bsc#1203138

Limit nanoseconds to 0..999999999.

Fixes: d8a5ba45457e ("[PATCH] FUSE - core")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Luis Henriques <lhenriques@suse.com>

---
 fs/fuse/inode.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 8c0665c5dff8..7c290089e693 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -180,6 +180,12 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
 	inode->i_uid     = make_kuid(fc->user_ns, attr->uid);
 	inode->i_gid     = make_kgid(fc->user_ns, attr->gid);
 	inode->i_blocks  = attr->blocks;
+
+	/* Sanitize nsecs */
+	attr->atimensec = min_t(u32, attr->atimensec, NSEC_PER_SEC - 1);
+	attr->mtimensec = min_t(u32, attr->mtimensec, NSEC_PER_SEC - 1);
+	attr->ctimensec = min_t(u32, attr->ctimensec, NSEC_PER_SEC - 1);
+
 	inode->i_atime.tv_sec   = attr->atime;
 	inode->i_atime.tv_nsec  = attr->atimensec;
 	/* mtime from server may be stale due to local buffered write */