Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]

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To: Ming Lei <ming.lei@xxxxxxxxxx>
Subject: Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
From: David Howells <dhowells@xxxxxxxxxx>
Date: Thu, 05 Dec 2024 11:19:15 +0000
Cc: dhowells@xxxxxxxxxx, Jens Axboe <axboe@xxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, syzbot+404b4b745080b6210c6c@xxxxxxxxxxxxxxxxxxxxxxxxx
In-reply-to: <1757450.1733391577@warthog.procyon.org.uk>
Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903
References: <1757450.1733391577@warthog.procyon.org.uk> <CAFj5m9Lsgt+iGE6JQV6OgUTNeGb1iiOsXz-eYqGC5Vg85JXL-w@mail.gmail.com> <1225307.1733323625@warthog.procyon.org.uk> <CAFj5m9KusEo=jQbt1AC=EQoOM-0EXmjjc_9WtSBCq+eMOSN8pw@mail.gmail.com> <1695261.1733381740@warthog.procyon.org.uk>

David Howells <dhowells@xxxxxxxxxx> wrote:

> Ming Lei <ming.lei@xxxxxxxxxx> wrote:
> 
> > Sure, please forward because I may not do it without syzbot report context.
> 
> I've forwarded it with the patch for my bug on top.

That seems to have fixed it.

David

References:
- Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
  - From: David Howells
- Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
  - From: Ming Lei
- Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
  - From: David Howells
- Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
  - From: Ming Lei
- Re: Possible locking bug in the block layer [was syzbot: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)]
  - From: David Howells

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