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SubjectRe: [PATCH] qnx4: do not interpret -EIO as a correct address
Date
On Friday, 2020-10-23 23:16 Tong Zhang wrote:
> qnx4_block_map() may return -EIO on funny qnx4 fs image, in this case do
> not interpret -EIO as a correct address
>
> Signed-off-by: Tong Zhang <ztong0001@gmail.com>
> ---
> fs/qnx4/inode.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
> index e8da1cde87b9..d3a40c5b1a9a 100644
> --- a/fs/qnx4/inode.c
> +++ b/fs/qnx4/inode.c
> @@ -59,6 +59,8 @@ static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_h
> QNX4DEBUG((KERN_INFO "qnx4: qnx4_get_block inode=[%ld] iblock=[%ld]\n",inode->i_ino,iblock));
>
> phys = qnx4_block_map( inode, iblock );
> + if (phys == -EIO)
> + return -EIO;
> if ( phys ) {
> // logical block is before EOF
> map_bh(bh, inode->i_sb, phys);

The fix looks sane to me, but how about the two other callers of
qnx4_block_map(), are they not affected as well?

Cheers
Anders


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