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fuse: limit nsec

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commit 47912eaa061a6a81e4aa790591a1874c650733c0 upstream.

Limit nanoseconds to 0..999999999.

Fixes: d8a5ba4545 ("[PATCH] FUSE - core")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miklos Szeredi 2022-07-21 16:06:18 +02:00 • committed by Greg Kroah-Hartman
commit d11e3f4fdc
1 changed files with 6 additions and 0 deletions
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6
fs/fuse/inode.c
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@ -162,6 +162,12 @@ 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 */