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Tue, 07 Jan 2020 07:47:58 -0800 (PST) Received: from phenom.ffwll.local ([2a02:168:564b:0:7567:bb67:3d7f:f863]) by smtp.gmail.com with ESMTPSA id z187sm39236wme.16.2020.01.07.07.47.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 07:47:57 -0800 (PST) Date: Tue, 7 Jan 2020 16:47:55 +0100 From: Daniel Vetter To: syzbot Cc: Rex.Zhu@amd.com, airlied@linux.ie, alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org, b.zolnierkie@samsung.com, christian.koenig@amd.com, daniel.vetter@ffwll.ch, david1.zhou@amd.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org, syzkaller-bugs@googlegroups.com Subject: Re: INFO: task hung in fb_release Message-ID: <20200107154755.GB43062@phenom.ffwll.local> Mail-Followup-To: syzbot , Rex.Zhu@amd.com, airlied@linux.ie, alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org, b.zolnierkie@samsung.com, christian.koenig@amd.com, david1.zhou@amd.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org, syzkaller-bugs@googlegroups.com References: <00000000000082b80f059a56da1f@google.com> <0000000000002074ef059a5c86e2@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000002074ef059a5c86e2@google.com> X-Operating-System: Linux phenom 5.3.0-3-amd64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 23, 2019 at 02:31:01AM -0800, syzbot wrote: > syzbot has bisected this bug to: > > commit e3933f26b657c341055443103bad331f4537b113 > Author: Rex Zhu > Date: Tue Jan 16 10:35:15 2018 +0000 > > drm/amd/pp: Add edit/commit/show OD clock/voltage support in sysfs Pretty sure you don't even have that driver loaded ... from the config: # CONFIG_DRM_AMDGPU is not set :-) Cheers, Daniel > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12b5a799e00000 > start commit: c6017471 Merge tag 'xfs-5.5-fixes-2' of git://git.kernel.o.. > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=11b5a799e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=16b5a799e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7f6119e2e3675a73 > dashboard link: https://syzkaller.appspot.com/bug?extid=d130c4a0890561cfac5b > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=169b1925e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12b9623ee00000 > > Reported-by: syzbot+d130c4a0890561cfac5b@syzkaller.appspotmail.com > Fixes: e3933f26b657 ("drm/amd/pp: Add edit/commit/show OD clock/voltage > support in sysfs") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch