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b=DRiq5MM8QlKWzmKYUEu0rzMrBw1YbAtoEliijJ6V5d+7goz4Y+jfEYKDrINjGzLdzM OhG6iWP+cPy+ucCHeruYfT6iwKWjLAxSk4oxYFuE4qWTtE/+3M72FK6hivHLRqX8gsxy CLMhNFJWe12Al1tpnkE/3D5eZ7XJM3tpf8HnE1YHxRTSG605557HT9HFKVfU62kYDuuS FRH58BCuYKSorXcy4jNtFEd8Eu4fixiuOvlNPLDN249gi8YQ/RKwTK+EHuviCkSGw97O Bon7VzXiZSXgeccCkPPIjdd4zS7NMuS0HtVVdj5FVjLx76y5ft/KkDpw3T2WqNeQRc7c U43g== X-Gm-Message-State: ACrzQf1gVdebIgpkXLJEWOVDPiK3UjBC5Ea6CqdlcHW+eaSv5WmSCt+s oqs+iaMXmgZ3XcX7L3a3ruu3IFOnXxFozHW61VDeCQ== X-Received: by 2002:a25:7b42:0:b0:6ca:1d03:2254 with SMTP id w63-20020a257b42000000b006ca1d032254mr26098678ybc.584.1667460443279; Thu, 03 Nov 2022 00:27:23 -0700 (PDT) MIME-Version: 1.0 References: <000000000000e9df4305ec7a3fc7@google.com> <0000000000005912d405ec8a329c@google.com> In-Reply-To: <0000000000005912d405ec8a329c@google.com> From: Marco Elver Date: Thu, 3 Nov 2022 08:26:47 +0100 Message-ID: Subject: Re: [syzbot] WARNING in __perf_event_overflow To: syzbot Cc: acme@kernel.org, alex.williamson@redhat.com, alexander.shishkin@linux.intel.com, bpf@vger.kernel.org, cohuck@redhat.com, dvyukov@google.com, jgg@ziepe.ca, jolsa@kernel.org, kevin.tian@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, shameerali.kolothum.thodi@huawei.com, syzkaller-bugs@googlegroups.com, yishaih@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-15.1 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SORTED_RECIPS,SPF_HELO_NONE, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 3 Nov 2022 at 06:26, syzbot wrote: > > syzbot has bisected this issue to: > > commit c1d050b0d169fd60c8acef157db53bd4e3141799 > Author: Yishai Hadas > Date: Thu Sep 8 18:34:45 2022 +0000 > > vfio/mlx5: Create and destroy page tracker object > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=136eb2da880000 > start commit: 88619e77b33d net: stmmac: rk3588: Allow multiple gmac cont.. > git tree: bpf > final oops: https://syzkaller.appspot.com/x/report.txt?x=10eeb2da880000 > console output: https://syzkaller.appspot.com/x/log.txt?x=176eb2da880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8 > dashboard link: https://syzkaller.appspot.com/bug?extid=589d998651a580e6135d > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11eabcea880000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10f7e632880000 > > Reported-by: syzbot+589d998651a580e6135d@syzkaller.appspotmail.com > Fixes: c1d050b0d169 ("vfio/mlx5: Create and destroy page tracker object") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection The bisection is wrong - see https://lore.kernel.org/all/20221031093513.3032814-1-elver@google.com/