From: Johannes Thumshirn <jthumshirn@suse.de>
To: Jan Kara <jack@suse.cz>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, omar Sandoval <osandov@osandov.com>
Subject: Re: [PATCH 0/15 v2] loop: Fix oops and possible deadlocks
Date: Tue, 16 Oct 2018 14:04:08 +0200 [thread overview]
Message-ID: <224dcf7b-1da2-6ee2-1ead-b41e73cd97c0@suse.de> (raw)
In-Reply-To: <20181016113654.GG18918@quack2.suse.cz>
On 16/10/18 13:36, Jan Kara wrote:
[...]
> 2) For the oops (use-after-free) issue I was not able to reproduce that in
> my test KVM in couple hours. The race window is rather narrow and syzbot
> with KASAN and everything hit it only 11 times. So I'm not sure how useful
> that test is. Any opinions?
Personally I think a test that has varying outcomes depending on how
often you run it (just to hit the race) isn't really suitable for a
suite like blktests.
But that's my personal opinion only, Omar what's your opinion here?
--
Johannes Thumshirn SUSE Labs
jthumshirn@suse.de +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
next prev parent reply other threads:[~2018-10-16 12:04 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 ` [PATCH 0/15 v2] loop: Fix oops and possible deadlocks Tetsuo Handa
2018-10-10 11:42 ` 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 [this message]
2018-10-16 18:16 ` Omar Sandoval
2018-10-17 9:47 ` Jan Kara
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