From: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
To: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org
Subject: Re: [PATCH 0/15 v2] loop: Fix oops and possible deadlocks
Date: Wed, 10 Oct 2018 19:19:00 +0900 [thread overview]
Message-ID: <a40fcf62-85a4-a6be-0803-d99dedf8cc61@i-love.sakura.ne.jp> (raw)
In-Reply-To: <20181010100415.26525-1-jack@suse.cz>
On 2018/10/10 19:04, Jan Kara wrote:
> Hi,
>
> this patch series fixes oops and possible deadlocks as reported by syzbot [1]
> [2]. The second patch in the series (from Tetsuo) fixes the oops, the remaining
> patches are cleaning up the locking in the loop driver so that we can in the
> end reasonably easily switch to rereading partitions without holding mutex
> protecting the loop device.
>
> I have lightly tested the patches by creating, deleting, and modifying loop
> devices but if there's some more comprehensive loopback device testsuite, I
> can try running it. Review is welcome!
Testing on linux-next by syzbot will be the most comprehensive. ;-)
>
> Changes since v1:
> * Added patch moving fput() calls in loop_change_fd() from under loop_ctl_mutex
> * Fixed bug in loop_control_ioctl() where it failed to return error properly
>
> Honza
>
> [1] https://syzkaller.appspot.com/bug?id=f3cfe26e785d85f9ee259f385515291d21bd80a3
> [2] https://syzkaller.appspot.com/bug?id=bf154052f0eea4bc7712499e4569505907d15889
>
next prev parent reply other threads:[~2018-10-10 10:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 10:04 [PATCH 0/15 v2] loop: Fix oops and possible deadlocks Jan Kara
2018-10-10 10:04 ` [PATCH 01/15] block/loop: Don't grab "struct file" for vfs_getattr() operation Jan Kara
2018-10-10 10:04 ` [PATCH 02/15] block/loop: Use global lock for ioctl() operation Jan Kara
2018-10-10 10:04 ` [PATCH 03/15] loop: Fold __loop_release into loop_release Jan Kara
2018-10-10 10:04 ` [PATCH 04/15] loop: Get rid of loop_index_mutex Jan Kara
2018-10-10 10:04 ` [PATCH 05/15] loop: Push lo_ctl_mutex down into individual ioctls Jan Kara
2018-10-10 10:04 ` [PATCH 06/15] loop: Split setting of lo_state from loop_clr_fd Jan Kara
2018-10-10 10:04 ` [PATCH 07/15] loop: Push loop_ctl_mutex down into loop_clr_fd() Jan Kara
2018-10-10 10:04 ` [PATCH 08/15] loop: Push loop_ctl_mutex down to loop_get_status() Jan Kara
2018-10-10 10:04 ` [PATCH 09/15] loop: Push loop_ctl_mutex down to loop_set_status() Jan Kara
2018-10-10 10:04 ` [PATCH 10/15] loop: Push loop_ctl_mutex down to loop_set_fd() Jan Kara
2018-10-10 10:04 ` [PATCH 11/15] loop: Push loop_ctl_mutex down to loop_change_fd() Jan Kara
2018-10-10 10:04 ` [PATCH 12/15] loop: Move special partition reread handling in loop_clr_fd() Jan Kara
2018-10-10 10:04 ` [PATCH 13/15] loop: Move loop_reread_partitions() out of loop_ctl_mutex Jan Kara
2018-10-10 10:04 ` [PATCH 14/15] loop: Fix deadlock when calling blkdev_reread_part() Jan Kara
2018-10-10 10:04 ` [PATCH 15/15] loop: Avoid circular locking dependency between loop_ctl_mutex and bd_mutex Jan Kara
2018-10-10 10:19 ` Tetsuo Handa [this message]
2018-10-10 11:42 ` [PATCH 0/15 v2] loop: Fix oops and possible deadlocks Johannes Thumshirn
2018-10-10 12:28 ` Jan Kara
2018-10-10 12:43 ` Johannes Thumshirn
2018-10-16 11:36 ` Jan Kara
2018-10-16 12:04 ` Johannes Thumshirn
2018-10-16 18:16 ` Omar Sandoval
2018-10-17 9:47 ` Jan Kara
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a40fcf62-85a4-a6be-0803-d99dedf8cc61@i-love.sakura.ne.jp \
--to=penguin-kernel@i-love.sakura.ne.jp \
--cc=axboe@kernel.dk \
--cc=jack@suse.cz \
--cc=linux-block@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.