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From:   Kevin Hilman <khilman@baylibre.com>
To:     Dmitry Vyukov <dvyukov@google.com>,
        Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc:     Petr Mladek <pmladek@suse.com>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        syzkaller <syzkaller@googlegroups.com>,
        Fengguang Wu <fengguang.wu@intel.com>
Subject: Re: [PATCH] printk: Add caller information to printk() output.
In-Reply-To: <CACT4Y+ZKR7eib+ZtK-7mbCw6rD6KOeuWtjWtxAcnHEWnYqyjJw@mail.gmail.com>
References: <20181204152724.ypk44mi4a56nrud4@pathway.suse.cz> <459018db-763b-9520-ead2-2c0d5975fbf3@i-love.sakura.ne.jp> <20181210130930.bas4fozjhe3dc5nu@pathway.suse.cz> <c5b5d660-d217-35f0-c4f1-7252367934d1@i-love.sakura.ne.jp> <e3f69846-ef08-c8f5-368f-4dada13c9970@i-love.sakura.ne.jp> <20181213121847.mwlr2vyv6qzclhk6@pathway.suse.cz> <20181213124255.GB3053@tigerII.localdomain> <20181217145452.3kev4rmo2l5lt2qy@pathway.suse.cz> <93f19e57-5051-c67d-9af4-b17624062d44@i-love.sakura.ne.jp> <20181218083911.qxvlqlwlb4eye72x@pathway.suse.cz> <20181218085833.GA460@jagdpanzerIV> <CACT4Y+ahbDb7F2B1-z5QxroZcqP+AEUfUi6Sa1ZHRpaCeVmZ=w@mail.gmail.com> <CACT4Y+ZKR7eib+ZtK-7mbCw6rD6KOeuWtjWtxAcnHEWnYqyjJw@mail.gmail.com>
Date:   Fri, 11 Jan 2019 11:34:28 -0800
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Dmitry Vyukov <dvyukov@google.com> writes:

> On Wed, Jan 2, 2019 at 5:09 PM Dmitry Vyukov <dvyukov@google.com> wrote:
>>
>> On Tue, Dec 18, 2018 at 9:58 AM Sergey Senozhatsky
>> <sergey.senozhatsky.work@gmail.com> wrote:
>> >
>> > On (12/18/18 09:39), Petr Mladek wrote:
>> > >
>> > > Sergey, are you okay with this squashed patch, please?
>> > >
>> >
>> > Yeah. There are several minor nitpicks, but here is my
>> > Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
>> >
>> >
>> > One final question - can syzbot folks confirm that the patch
>> > helps? Just curious.
>>
>> This slip through the cracks. Tetsuo pinged me and I am testing now.
>> Need to create a set of tests and update parsing code to handle this.
>
> I've pushed support for CONFIG_PRINTK_CALLER to syzkaller/syzbot:
> https://github.com/google/syzkaller/commit/7da2392541a49c3f17b2e7d24e04b84d72b965fb
> Let's see what happens. Limited local testing shows that it's working
> as intended and significatly improves quality of reports and ability
> to make sense out of kernel output.
>
> Tetsuo, thanks for your great persistence with this change!
> Sergey, Petr, thanks for reviews!
>
> +Fengguang, Kevin, maybe you will find this useful for 0-day/kernel-ci.

Yes, will definitely give it a try.  

Kevin