From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: syzbot <syzbot+a4ae1442ccc637162dc1@syzkaller.appspotmail.com>
Cc: Dave Airlie <airlied@linux.ie>,
Ayan Kumar Halder <ayan.halder@arm.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
Gerd Hoffmann <kraxel@redhat.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Peter Rosin <peda@axentia.se>, Sam Ravnborg <sam@ravnborg.org>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
"Syrjala, Ville" <ville.syrjala@linux.intel.com>,
Chen-Yu Tsai <wens@csie.org>
Subject: Re: INFO: task hung in fb_open
Date: Thu, 5 Dec 2019 15:04:55 +0100 [thread overview]
Message-ID: <CAKMK7uF4AR_tRxt5wBKxzz6gTPJmub3A=xyuh1HjgvfYy7RCBg@mail.gmail.com> (raw)
In-Reply-To: <000000000000bcf3bc0598f5090d@google.com>
On Thu, Dec 5, 2019 at 2:38 PM syzbot
<syzbot+a4ae1442ccc637162dc1@syzkaller.appspotmail.com> wrote:
>
> syzbot has bisected this bug to:
>
> commit 979c11ef39cee79d6f556091a357890962be2580
> Author: Ayan Kumar Halder <ayan.halder@arm.com>
> Date: Tue Jul 17 17:13:46 2018 +0000
>
> drm/sun4i: Substitute sun4i_backend_format_is_yuv() with format->is_yuv
Pretty sure your GCD machine is not using the sun4i driver. It's also
very far away from the code that's blowing up. bisect gone wrong?
-Daniel
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15d2f97ee00000
> start commit: 596cf45c Merge branch 'akpm' (patches from Andrew)
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=13d2f97ee00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=7d8ab2e0e09c2a82
> dashboard link: https://syzkaller.appspot.com/bug?extid=a4ae1442ccc637162dc1
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14273edae00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e7677ae00000
>
> Reported-by: syzbot+a4ae1442ccc637162dc1@syzkaller.appspotmail.com
> Fixes: 979c11ef39ce ("drm/sun4i: Substitute sun4i_backend_format_is_yuv()
> with format->is_yuv")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
next prev parent reply other threads:[~2019-12-05 14:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 20:15 INFO: task hung in fb_open syzbot
2019-12-05 13:38 ` syzbot
2019-12-05 14:04 ` Daniel Vetter [this message]
2019-12-05 16:45 ` Dmitry Vyukov
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