Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.136' (ECDSA) to the list of known hosts. syzkaller login: [ 70.409295][ T8502] IPVS: ftp: loaded support on port[0] = 21 [ 70.554547][ T8502] chnl_net:caif_netlink_parms(): no params data found [ 70.608342][ T8502] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.616172][ T8502] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.625163][ T8502] device bridge_slave_0 entered promiscuous mode [ 70.634896][ T8502] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.644201][ T8502] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.652473][ T8502] device bridge_slave_1 entered promiscuous mode [ 70.675071][ T8502] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.686127][ T8502] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.709802][ T8502] team0: Port device team_slave_0 added [ 70.718663][ T8502] team0: Port device team_slave_1 added [ 70.737356][ T8502] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.744403][ T8502] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 70.771947][ T8502] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.786714][ T8502] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.794219][ T8502] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 70.821207][ T8502] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.849063][ T8502] device hsr_slave_0 entered promiscuous mode [ 70.855737][ T8502] device hsr_slave_1 entered promiscuous mode [ 70.964801][ T8502] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.975750][ T8502] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.985983][ T8502] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.999299][ T8502] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.026876][ T8502] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.034197][ T8502] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.042368][ T8502] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.049559][ T8502] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.096275][ T8502] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.110616][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.121956][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.130881][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.140055][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.152898][ T8502] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.170043][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.179678][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.187690][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.196876][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.205887][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.213035][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.232000][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.241204][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.253693][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.275520][ T8502] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.286956][ T8502] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.299860][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.310011][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.319790][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.338856][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.346381][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.361879][ T8502] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.381567][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.402063][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.411095][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.419922][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.432877][ T8502] device veth0_vlan entered promiscuous mode [ 71.445627][ T8502] device veth1_vlan entered promiscuous mode [ 71.469479][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.477425][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.487578][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.499764][ T8502] device veth0_macvtap entered promiscuous mode [ 71.510874][ T8502] device veth1_macvtap entered promiscuous mode [ 71.529836][ T8502] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.537708][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.550496][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.563212][ T8502] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.571742][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 71.581469][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.594906][ T8502] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.604186][ T8502] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.613323][ T8502] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.622377][ T8502] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.938241][ T7] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 72.198050][ T7] usb 1-1: Using ep0 maxpacket: 8 [ 72.317891][ T7] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 72.328293][ T7] usb 1-1: config 0 interface 0 altsetting 0 has 0 endpoint descriptors, different from the interface descriptor's value: 3 [ 72.388979][ T8] Bluetooth: hci0: command 0x0409 tx timeout [ 72.498059][ T7] usb 1-1: New USB device found, idVendor=17e9, idProduct=9077, bcdDevice=f2.e1 [ 72.507121][ T7] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 72.516433][ T7] usb 1-1: Product: syz [ 72.521152][ T7] usb 1-1: Manufacturer: syz [ 72.525766][ T7] usb 1-1: SerialNumber: syz [ 72.536094][ T7] usb 1-1: config 0 descriptor?? [ 72.878017][ T7] udlfb 1-1:0.0: vendor descriptor not available (-71) [ 72.897801][ T7] usb 1-1: Read EDID byte 0 failed: -71 [ 72.917780][ T7] usb 1-1: Read EDID byte 0 failed: -71 [ 72.937742][ T7] usb 1-1: Read EDID byte 0 failed: -71 [ 72.943342][ T7] usb 1-1: Unable to get valid EDID from device/display [ 72.980987][ T7] usb 1-1: submit urb error: -2 [ 72.999249][ T7] udlfb: probe of 1-1:0.0 failed with error -2 [ 73.057843][ T7] [drm] vendor descriptor length:b9 data:00 00 00 00 00 00 00 00 00 00 00 [ 73.066378][ T7] [drm:udl_init.cold] *ERROR* Unrecognized vendor firmware descriptor [ 73.100947][ T7] [drm:udl_init] *ERROR* Selecting channel failed [ 73.132210][ T7] [drm] Initialized udl 0.0.1 20120220 for 1-1:0.0 on minor 2 [ 73.141678][ T7] [drm] Initialized udl on minor 2 [ 73.177808][ T7] [drm:udl_get_edid_block] *ERROR* Read EDID byte 0 failed err ffffffb9 [ 73.186756][ T7] udl 1-1:0.0: [drm] Cannot find any crtc or sizes [ 73.212250][ T7] usb 1-1: USB disconnect, device number 2 [ 73.233048][ T7] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 73.244787][ T7] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 73.253324][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.10.0-rc5-next-20201126-syzkaller #0 [ 73.262682][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.272756][ T7] Workqueue: usb_hub_wq hub_event [ 73.277785][ T7] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 73.284000][ T7] Code: 00 00 00 00 53 48 89 fb 48 83 ec 08 e8 83 8b 3f fd 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 8d 73 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 0e 48 8b 7b 10 48 83 c4 08 5b e9 56 61 f7 ff 48 89 [ 73.303601][ T7] RSP: 0018:ffffc90000cc7710 EFLAGS: 00010202 [ 73.309660][ T7] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff815524de [ 73.317991][ T7] RDX: 0000000000000002 RSI: 0000000000000018 RDI: 0000000000000010 [ 73.325946][ T7] RBP: ffff88801db748c8 R08: 0000000000000000 R09: ffff88801db74a17 [ 73.333895][ T7] R10: ffffed1003b6e942 R11: 0000000000000000 R12: 0000000000000000 [ 73.341846][ T7] R13: ffff88801db748d8 R14: ffff88801db74810 R15: dead000000000100 [ 73.349796][ T7] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 73.358699][ T7] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.365276][ T7] CR2: 000055f43f9d79e0 CR3: 000000000b08e000 CR4: 00000000001506f0 [ 73.373310][ T7] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.381257][ T7] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.389201][ T7] Call Trace: [ 73.392473][ T7] drm_fbdev_cleanup+0x380/0x440 [ 73.397401][ T7] ? drm_fbdev_cleanup+0x440/0x440 [ 73.402486][ T7] drm_fbdev_client_unregister+0x61/0x80 [ 73.408276][ T7] drm_client_dev_unregister+0x239/0x3b0 [ 73.413897][ T7] drm_dev_unregister+0xe9/0x2b0 [ 73.418809][ T7] usb_unbind_interface+0x1d8/0x8d0 [ 73.423982][ T7] ? kernfs_remove_by_name_ns+0x62/0xb0 [ 73.429507][ T7] ? usb_unbind_device+0x1a0/0x1a0 [ 73.434607][ T7] __device_release_driver+0x3bd/0x6f0 [ 73.440042][ T7] device_release_driver+0x26/0x40 [ 73.445146][ T7] bus_remove_device+0x2eb/0x5a0 [ 73.450079][ T7] device_del+0x502/0xec0 [ 73.454400][ T7] ? device_link_add_missing_supplier_links+0x370/0x370 [ 73.461308][ T7] ? pm_runtime_barrier+0xdc/0x1a0 [ 73.466412][ T7] usb_disable_device+0x35b/0x7b0 [ 73.471425][ T7] usb_disconnect.cold+0x27d/0x780 [ 73.477381][ T7] hub_event+0x1c8a/0x42d0 [ 73.481865][ T7] ? hub_port_debounce+0x3b0/0x3b0 [ 73.486966][ T7] ? lock_release+0x710/0x710 [ 73.491806][ T7] ? lock_downgrade+0x6d0/0x6d0 [ 73.496631][ T7] ? do_raw_spin_lock+0x120/0x2b0 [ 73.501630][ T7] process_one_work+0x98d/0x15f0 [ 73.506542][ T7] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.511889][ T7] ? rwlock_bug.part.0+0x90/0x90 [ 73.517432][ T7] ? _raw_spin_lock_irq+0x41/0x50 [ 73.522534][ T7] worker_thread+0x82b/0x1120 [ 73.527188][ T7] ? process_one_work+0x15f0/0x15f0 [ 73.532361][ T7] kthread+0x3b1/0x4a0 [ 73.536410][ T7] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 73.542294][ T7] ret_from_fork+0x1f/0x30 [ 73.546683][ T7] Modules linked in: [ 73.551095][ T7] ---[ end trace 5e45793b7de819bc ]--- [ 73.556577][ T7] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 73.559442][ T204] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.562868][ T7] Code: 00 00 00 00 53 48 89 fb 48 83 ec 08 e8 83 8b 3f fd 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 8d 73 18 48