linux-kernel - Re: [syzbot] [io-uring?] KASAN: null-ptr-deref Write in sys_io_uring

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Message-ID: <Z1Ckrl-gC3HpPj0W@casper.infradead.org>
Date: Wed, 4 Dec 2024 18:51:26 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Tamir Duberstein <tamird@...il.com>
Cc: Jens Axboe <axboe@...nel.dk>,
	syzbot <syzbot+092bbab7da235a02a03a@...kaller.appspotmail.com>,
	asml.silence@...il.com, io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [syzbot] [io-uring?] KASAN: null-ptr-deref Write in
 sys_io_uring_register

On Wed, Dec 04, 2024 at 01:39:37PM -0500, Tamir Duberstein wrote:
> > I thought I did, but when I ran it again just now, this test did catch
> > it. So there is coverage.
> 
> Matthew, would you consider a patch that migrates the xarray tests to kunit?

how would that help?  it's already a kernel module as well as being a
userspace testsuite.  kunit just seemed to add useless boilerplate last
tie i looked.