Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. syzkaller login: [ 79.927330][ T8478] IPVS: ftp: loaded support on port[0] = 21 [ 80.043327][ T8478] chnl_net:caif_netlink_parms(): no params data found [ 80.097528][ T8478] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.105339][ T8478] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.116066][ T8478] device bridge_slave_0 entered promiscuous mode [ 80.127436][ T8478] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.135652][ T8478] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.145144][ T8478] device bridge_slave_1 entered promiscuous mode [ 80.167370][ T8478] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.178566][ T8478] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.204653][ T8478] team0: Port device team_slave_0 added [ 80.212420][ T8478] team0: Port device team_slave_1 added [ 80.232024][ T8478] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.239466][ T8478] 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. [ 80.265958][ T8478] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.280638][ T8478] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.287711][ T8478] 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. [ 80.314381][ T8478] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.343686][ T8478] device hsr_slave_0 entered promiscuous mode [ 80.351653][ T8478] device hsr_slave_1 entered promiscuous mode [ 80.466730][ T8478] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.477871][ T8478] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.496146][ T8478] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.505997][ T8478] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.538268][ T8478] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.546207][ T8478] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.554377][ T8478] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.561847][ T8478] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.614656][ T8478] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.630171][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.642626][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.654809][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.666097][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.680642][ T8478] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.692207][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.701310][ T35] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.708599][ T35] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.727157][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.735776][ T35] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.742988][ T35] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.763836][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.774679][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.791788][ T8478] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 80.803612][ T8478] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.816295][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.825718][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.835230][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.846074][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.865630][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.874865][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.888671][ T8478] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.910079][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.930813][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.940268][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.949474][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.960597][ T8478] device veth0_vlan entered promiscuous mode [ 80.974037][ T8478] device veth1_vlan entered promiscuous mode [ 80.999380][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.009499][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.019073][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.031748][ T8478] device veth0_macvtap entered promiscuous mode [ 81.044508][ T8478] device veth1_macvtap entered promiscuous mode [ 81.063555][ T8478] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.071033][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.082222][ T8408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.094346][ T8478] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.105313][ T19] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.115609][ T19] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.128629][ T8478] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.141142][ T8478] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 81.153618][ T8478] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.165617][ T8478] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.483384][ T3006] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 81.842843][ T3006] usb 1-1: New USB device found, idVendor=17e9, idProduct=8226, bcdDevice=81.18 [ 81.852149][ T3006] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 81.866623][ T3006] usb 1-1: config 0 descriptor?? [ 82.162706][ T3006] udlfb 1-1:0.0: vendor descriptor not available (-71) [ 82.182684][ T3006] usb 1-1: Read EDID byte 0 failed: -71 [ 82.214173][ T3006] usb 1-1: Read EDID byte 0 failed: -71 [ 82.232627][ T3006] usb 1-1: Read EDID byte 0 failed: -71 [ 82.238282][ T3006] usb 1-1: Unable to get valid EDID from device/display [ 82.286511][ T3006] usb 1-1: submit urb error: -2 [ 82.304933][ T3006] udlfb: probe of 1-1:0.0 failed with error -2 [ 82.371619][ T3006] [drm] vendor descriptor length:b9 data:00 00 00 00 00 00 00 00 00 00 00 [ 82.380791][ T3006] [drm:udl_init.cold] *ERROR* Unrecognized vendor firmware descriptor [ 82.412697][ T3006] [drm:udl_init] *ERROR* Selecting channel failed [ 82.443971][ T3006] [drm] Initialized udl 0.0.1 20120220 for 1-1:0.0 on minor 2 [ 82.451621][ T3006] [drm] Initialized udl on minor 2 [ 82.472659][ T3006] [drm:udl_get_edid_block] *ERROR* Read EDID byte 0 failed err ffffffb9 [ 82.481889][ T3006] udl 1-1:0.0: [drm] Cannot find any crtc or sizes [ 82.513820][ T3006] usb 1-1: USB disconnect, device number 2 [ 82.523513][ T3006] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 82.535301][ T3006] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 82.543733][ T3006] CPU: 0 PID: 3006 Comm: kworker/0:2 Not tainted 5.11.0-rc5-syzkaller #0 [ 82.552184][ T3006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.562260][ T3006] Workqueue: usb_hub_wq hub_event [ 82.567313][ T3006] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 82.573528][ T3006] Code: 00 00 00 00 53 48 89 fb 48 83 ec 08 e8 53 05 3c 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 66 56 f7 ff 48 89 [ 82.593361][ T3006] RSP: 0018:ffffc9000175f710 EFLAGS: 00010202 [ 82.599447][ T3006] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 82.607646][ T3006] RDX: 0000000000000002 RSI: 0000000000000018 RDI: 0000000000000010 [ 82.615623][ T3006] RBP: ffff88801c6830c8 R08: 0000000000000000 R09: ffff88801c683217 [ 82.623655][ T3006] R10: ffffed10038d0642 R11: 0000000000000000 R12: 0000000000000000 [ 82.631626][ T3006] R13: ffff88801c6830d8 R14: ffff88801c683010 R15: dead000000000100 [ 82.639599][ T3006] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 82.648548][ T3006] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.655137][ T3006] CR2: 00005582f5198dd8 CR3: 0000000011d13000 CR4: 00000000001506f0 [ 82.663109][ T3006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.671190][ T3006] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.679175][ T3006] Call Trace: [ 82.682451][ T3006] drm_fbdev_cleanup+0x380/0x440 [ 82.687397][ T3006] ? drm_fbdev_cleanup+0x440/0x440 [ 82.692500][ T3006] drm_fbdev_client_unregister+0x61/0x80 [ 82.698127][ T3006] drm_client_dev_unregister+0x239/0x3b0 [ 82.703851][ T3006] drm_dev_unregister+0xe9/0x2b0 [ 82.708820][ T3006] usb_unbind_interface+0x1d8/0x8d0 [ 82.714668][ T3006] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 82.720389][ T3006] ? kernfs_remove_by_name_ns+0x62/0xb0 [ 82.725932][ T3006] ? usb_unbind_device+0x1a0/0x1a0 [ 82.731051][ T3006] __device_release_driver+0x3bd/0x6f0 [ 82.736522][ T3006] device_release_driver+0x26/0x40 [ 82.741695][ T3006] bus_remove_device+0x2eb/0x5a0 [ 82.746642][ T3006] device_del+0x502/0xd40 [ 82.751693][ T3006] ? __device_links_queue_sync_state+0x3f0/0x3f0 [ 82.758043][ T3006] ? pm_runtime_barrier+0xdc/0x1a0 [ 82.763170][ T3006] usb_disable_device+0x35b/0x7b0 [ 82.768202][ T3006] usb_disconnect.cold+0x27d/0x780 [ 82.773332][ T3006] hub_event+0x1c8a/0x42d0 [ 82.777756][ T3006] ? hub_port_debounce+0x3b0/0x3b0 [ 82.782879][ T3006] ? lock_release+0x710/0x710 [ 82.787555][ T3006] ? lock_downgrade+0x6d0/0x6d0 [ 82.792439][ T3006] ? do_raw_spin_lock+0x120/0x2b0 [ 82.797464][ T3006] process_one_work+0x98d/0x15f0 [ 82.802411][ T3006] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.807808][ T3006] ? rwlock_bug.part.0+0x90/0x90 [ 82.812759][ T3006] ? _raw_spin_lock_irq+0x41/0x50 [ 82.817784][ T3006] worker_thread+0x82b/0x1120 [ 82.822462][ T3006] ? __kthread_parkme+0x13f/0x1e0 [ 82.827653][ T3006] ? process_one_work+0x15f0/0x15f0 [ 82.833028][ T3006] kthread+0x3b1/0x4a0 [ 82.838232][ T3006] ? __kthread_bind_mask+0xc0/0xc0 [ 82.843351][ T3006] ret_from_fork+0x1f/0x30 [ 82.847767][ T3006] Modules linked in: [ 82.852868][ T3006] ---[ end trace bfbebd874f7b72d7 ]--- [ 82.858531][ T3006] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 82.86