On Fri 07-10-16 15:08:54, Ross Zwisler wrote: > Don't take down the kernel if we get an invalid 'from' and 'length' > argument pair. Just warn once and return an error. > > Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> Looks good. You can add: Reviewed-by: Jan Kara <jack@xxxxxxx> Honza > --- > fs/dax.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/fs/dax.c b/fs/dax.c > index ac28cdf..98189ac 100644 > --- a/fs/dax.c > +++ b/fs/dax.c > @@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length, > /* Block boundary? Nothing to do */ > if (!length) > return 0; > - BUG_ON((offset + length) > PAGE_SIZE); > + if (WARN_ON_ONCE((offset + length) > PAGE_SIZE)) > + return -EINVAL; > > memset(&bh, 0, sizeof(bh)); > bh.b_bdev = inode->i_sb->s_bdev; > -- > 2.7.4 > > -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>