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    Subject[PATCH 5.15 023/667] fs/ntfs3: Check new size for limits
    Date
    From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

    commit 114346978cf61de02832cc3cc68432a3de70fb38 upstream.

    We must check size before trying to allocate.
    Size can be set for example by "ulimit -f".
    Fixes xfstest generic/228
    Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation")

    Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
    Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    fs/ntfs3/file.c | 8 +++++++-
    1 file changed, 7 insertions(+), 1 deletion(-)

    --- a/fs/ntfs3/file.c
    +++ b/fs/ntfs3/file.c
    @@ -661,7 +661,13 @@ static long ntfs_fallocate(struct file *
    /*
    * Normal file: Allocate clusters, do not change 'valid' size.
    */
    - err = ntfs_set_size(inode, max(end, i_size));
    + loff_t new_size = max(end, i_size);
    +
    + err = inode_newsize_ok(inode, new_size);
    + if (err)
    + goto out;
    +
    + err = ntfs_set_size(inode, new_size);
    if (err)
    goto out;


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