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Message-ID: <000000000000ff1c4105d381d24f@google.com>
Date: Sun, 19 Dec 2021 07:57:07 -0800
From: syzbot <syzbot+c8ae65286134dd1b800d@...kaller.appspotmail.com>
To: airlied@...ux.ie, christian.koenig@....com, daniel.vetter@...ll.ch,
daniel.vetter@...el.com, daniel@...ll.ch,
dri-devel@...ts.freedesktop.org,
linaro-mm-sig-owner@...ts.linaro.org,
linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org, maarten.lankhorst@...ux.intel.com,
mripard@...nel.org, sumit.semwal@...aro.org,
syzkaller-bugs@...glegroups.com, tzimmermann@...e.de
Subject: Re: [syzbot] KASAN: use-after-free Read in drm_gem_object_release_handle
syzbot has bisected this issue to:
commit 45d9c8dde4cd8589f9180309ec60f0da2ce486e4
Author: Daniel Vetter <daniel.vetter@...ll.ch>
Date: Thu Aug 12 13:14:12 2021 +0000
drm/vgem: use shmem helpers
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=147953cbb00000
start commit: 3f667b5d4053 Merge tag 'tty-5.16-rc6' of git://git.kernel...
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=167953cbb00000
console output: https://syzkaller.appspot.com/x/log.txt?x=127953cbb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa556098924b78f0
dashboard link: https://syzkaller.appspot.com/bug?extid=c8ae65286134dd1b800d
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16fd41ebb00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1483c7d5b00000
Reported-by: syzbot+c8ae65286134dd1b800d@...kaller.appspotmail.com
Fixes: 45d9c8dde4cd ("drm/vgem: use shmem helpers")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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