Re: [PATCH 1/2] block: Rework bio_for_each_segment_all()

From: Phillip Lougher
Date: Thu Mar 30 2023 - 15:02:43 EST


On 30/03/2023 18:55, Kent Overstreet wrote:
On Wed, Mar 29, 2023 at 05:50:27PM +0100, Phillip Lougher wrote:
There is a problem with the above code, on testing I get the following
results:

Index 78018785329, offset 49, bvec.bv_len 1024: In same bio, metadata length
32780

Could you share how you're doing your testing? I set up a basic test
(created images using every compression type, tested reading them) and
so far I'm not able to reproduce this.

I use a very large Squashfs file that triggers the edge case.

That is too big to post, and so I'll see if I can artifically generate
a small Squashfs filesystem that triggers the edge case.

Phillip