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Tue, 29 Aug 2023 18:56:14 +0000 (GMT) Message-ID: <9a8ca460-3d36-92cf-ccf4-7ecf1a654f06@linux.ibm.com> Date: Tue, 29 Aug 2023 14:56:14 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [syzbot] [input?] INFO: task hung in uhid_char_release Content-Language: en-US To: syzbot , agordeev@linux.ibm.com, akrowiak@linux.ibm.com, benjamin.tissoires@redhat.com, clg@redhat.com, davem@davemloft.net, david.rheinsberg@gmail.com, edumazet@google.com, jikos@kernel.org, kuba@kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com References: <00000000000068345606041323fc@google.com> From: Matthew Rosato In-Reply-To: <00000000000068345606041323fc@google.com> Content-Type: text/plain; charset=UTF-8 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: O8M01QiYjAGrilVgmI_XpEnLoqm1ASrl X-Proofpoint-GUID: MtKJXelBIYx1eBNrsjICnvdI0vL2M_6s Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-29_13,2023-08-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 bulkscore=0 mlxlogscore=683 lowpriorityscore=0 priorityscore=1501 impostorscore=0 phishscore=0 clxscore=1011 spamscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308290161 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On 8/29/23 1:28 PM, syzbot wrote: > syzbot has bisected this issue to: > > commit bf48961f6f48e3b7eb80c3e179207e9f4e4cd660 > Author: Tony Krowiak > Date: Tue May 30 22:35:37 2023 +0000 > > s390/vfio-ap: realize the VFIO_DEVICE_SET_IRQS ioctl Hmm, this doesn't seem like the right commit. The changes for bf48961f6f48e3b7eb80c3e179207e9f4e4cd660 are limited to the vfio_ap module, which requires CONFIG_S390 and CONFIG_VFIO_AP. Besides the config referenced below I also looked at other cases via the dashboard link and none of the config files I checked had either of these. Thanks, Matt > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=155eba2fa80000 > start commit: bde7f150276b Merge tag 'pm-6.5-rc2' of git://git.kernel.or.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=175eba2fa80000 > console output: https://syzkaller.appspot.com/x/log.txt?x=135eba2fa80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=6d0f369ef5fb88c9 > dashboard link: https://syzkaller.appspot.com/bug?extid=8fe2d362af0e1cba8735 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=124711b6a80000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=178c5a92a80000 > > Reported-by: syzbot+8fe2d362af0e1cba8735@syzkaller.appspotmail.com > Fixes: bf48961f6f48 ("s390/vfio-ap: realize the VFIO_DEVICE_SET_IRQS ioctl") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection