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From: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: "Theodore Y. Ts'o" <tytso@mit.edu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Guenter Roeck <groeck@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	syzkaller <syzkaller@googlegroups.com>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	David Miller <davem@davemloft.net>,
	Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: what trees/branches to test on syzbot
Date: Mon, 18 Jun 2018 14:54:22 +0100	[thread overview]
Message-ID: <20180618145422.11b61298@alans-desktop> (raw)
In-Reply-To: <CACT4Y+adoSOyhLNuWF7ZCS-e7SxZu89O1VLXV5NZjg_c6U3B-w@mail.gmail.com>

> But forward bisection (when bug is fixed) unfortunately won't work
> because these commits are not connected to HEAD. And forward bisection
> is very important, otherwise who will bring order to all these
> hundreds of open bugs?
> https://syzkaller.appspot.com/

Bisection isn't so important when you are trying to close bugs that
got fixed, with a note that it's no longer reproducable. It might mean the
reproducer broke but it also stops you drowning and it tells a user that
they might as well try the new one and see if still breaks thus
collecting the information needed.

True it's nice to know what commit may have magically fixed it but it's
not essential. Further more once you see a bug is fixed even in -next you
can later run the reproducer against an actual release to make sure it's
still fixed there, and bisect between previous release and that release to
find a mainline commit id if it's a single fix point.

Alan

  parent reply	other threads:[~2018-06-18 13:55 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-16  7:51 Dmitry Vyukov
2018-01-16  9:45 ` Guenter Roeck
2018-01-16  9:58   ` Dmitry Vyukov
2018-01-16 16:58     ` Guenter Roeck
2018-01-16 17:02     ` Eric W. Biederman
2018-01-16 17:34       ` Greg Kroah-Hartman
2018-01-22 13:32         ` Dmitry Vyukov
2018-06-09  6:31           ` Tetsuo Handa
2018-06-09 22:17             ` Linus Torvalds
2018-06-10  1:51               ` Theodore Y. Ts'o
2018-06-10  6:11                 ` Dmitry Vyukov
2018-06-11  1:22                   ` Theodore Y. Ts'o
2018-06-15  9:54                     ` Dmitry Vyukov
2018-06-18  4:52                       ` Stephen Rothwell
2018-06-18  6:10                       ` Eric W. Biederman
2018-06-18 13:54                       ` Alan Cox [this message]
2018-06-26 10:54               ` Tetsuo Handa
2018-06-26 14:16                 ` Theodore Y. Ts'o
2018-06-26 14:38                   ` Dmitry Vyukov
2018-06-26 14:54                     ` Guenter Roeck
2018-06-26 20:37                       ` Tetsuo Handa
2018-07-05 10:49                         ` Tetsuo Handa
2018-07-06 23:26                           ` Tetsuo Handa
2018-07-10  0:35                             ` Andrew Morton
2018-07-10  2:13                               ` Tetsuo Handa
2018-01-19  1:48     ` Fengguang Wu
2018-01-22 13:34       ` Dmitry Vyukov

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