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X-Received: by 2002:a05:6e02:512:: with SMTP id d18mr12103123ils.192.1625521217680; Mon, 05 Jul 2021 14:40:17 -0700 (PDT) Date: Mon, 05 Jul 2021 14:40:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c1388a05c6672697@google.com> Subject: [syzbot] net boot error: general protection fault in ptp_clock_register From: syzbot To: davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, richardcochran@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 6ff63a15 net: marvell: always set skb_shared_info in mvnet.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=12ea06c4300000 kernel config: https://syzkaller.appspot.com/x/.config?x=26b64b13fcecb7e1 dashboard link: https://syzkaller.appspot.com/bug?extid=54923d81929c37649359 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+54923d81929c37649359@syzkaller.appspotmail.com vivid-013: V4L2 capture device registered as swradio13 vivid-013: V4L2 receiver device registered as radio26 vivid-013: V4L2 transmitter device registered as radio27 vivid-013: V4L2 metadata capture device registered as video57 vivid-013: V4L2 metadata output device registered as video58 vivid-013: V4L2 touch capture device registered as v4l-touch13 vivid-014: using single planar format API vivid-014: CEC adapter cec28 registered for HDMI input 0 vivid-014: V4L2 capture device registered as video59 vivid-014: CEC adapter cec29 registered for HDMI output 0 vivid-014: V4L2 output device registered as video60 vivid-014: V4L2 capture device registered as vbi28, supports raw and sliced VBI vivid-014: V4L2 output device registered as vbi29, supports raw and sliced VBI vivid-014: V4L2 capture device registered as swradio14 vivid-014: V4L2 receiver device registered as radio28 vivid-014: V4L2 transmitter device registered as radio29 vivid-014: V4L2 metadata capture device registered as video61 vivid-014: V4L2 metadata output device registered as video62 vivid-014: V4L2 touch capture device registered as v4l-touch14 vivid-015: using multiplanar format API vivid-015: CEC adapter cec30 registered for HDMI input 0 vivid-015: V4L2 capture device registered as video63 vivid-015: CEC adapter cec31 registered for HDMI output 0 vivid-015: V4L2 output device registered as video64 vivid-015: V4L2 capture device registered as vbi30, supports raw and sliced VBI vivid-015: V4L2 output device registered as vbi31, supports raw and sliced VBI vivid-015: V4L2 capture device registered as swradio15 vivid-015: V4L2 receiver device registered as radio30 vivid-015: V4L2 transmitter device registered as radio31 vivid-015: V4L2 metadata capture device registered as video65 vivid-015: V4L2 metadata output device registered as video66 vivid-015: V4L2 touch capture device registered as v4l-touch15 vim2m vim2m.0: Device registered as /dev/video0 vicodec vicodec.0: Device 'stateful-encoder' registered as /dev/video68 vicodec vicodec.0: Device 'stateful-decoder' registered as /dev/video69 vicodec vicodec.0: Device 'stateless-decoder' registered as /dev/video70 dvbdev: DVB: registering new adapter (dvb_vidtv_bridge) i2c i2c-0: DVB: registering adapter 0 frontend 0 (Dummy demod for DVB-T/T2/C/S/S2)... dvbdev: dvb_create_media_entity: media entity 'Dummy demod for DVB-T/T2/C/S/S2' registered. dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. vidtv vidtv.0: Successfully initialized vidtv! usbcore: registered new interface driver radioshark usbcore: registered new interface driver radioshark2 usbcore: registered new interface driver dsbr100 usbcore: registered new interface driver radio-si470x usbcore: registered new interface driver radio-usb-si4713 usbcore: registered new interface driver radio-mr800 usbcore: registered new interface driver radio-keene usbcore: registered new interface driver radio-ma901 usbcore: registered new interface driver radio-raremono general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ptp_clock_register+0x5b1/0xce0 drivers/ptp/ptp_clock.c:239 Code: 0f 85 38 06 00 00 4d 89 a7 10 01 00 00 e8 f7 9c 51 fb 49 8d bd b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 06 00 00 4d 8b bd b8 04 00 00 4d 85 ff 74 51 RSP: 0000:ffffc90000c67cc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffff9200018cf9f RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8623e789 RDI: 00000000000004b8 RBP: ffffffff90d082a8 R08: ffff8881478e0648 R09: 0000000000000000 R10: ffffed1028f1c329 R11: 0000000000000000 R12: ffff8881478e0000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff90d082a8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ptp_kvm_init+0xe5/0x11b drivers/ptp/ptp_kvm_common.c:148 do_one_initcall+0x103/0x650 init/main.c:1246 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1355 [inline] kernel_init_freeable+0x6b8/0x741 init/main.c:1557 kernel_init+0x1a/0x1d0 init/main.c:1449 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 4ffcc7041c5c4e30 ]--- RIP: 0010:ptp_clock_register+0x5b1/0xce0 drivers/ptp/ptp_clock.c:239 Code: 0f 85 38 06 00 00 4d 89 a7 10 01 00 00 e8 f7 9c 51 fb 49 8d bd b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 06 00 00 4d 8b bd b8 04 00 00 4d 85 ff 74 51 RSP: 0000:ffffc90000c67cc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffff9200018cf9f RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8623e789 RDI: 00000000000004b8 RBP: ffffffff90d082a8 R08: ffff8881478e0648 R09: 0000000000000000 R10: ffffed1028f1c329 R11: 0000000000000000 R12: ffff8881478e0000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff90d082a8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.