[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts. syzkaller login: [ 63.697074][ T8383] IPVS: ftp: loaded support on port[0] = 21 [ 63.798621][ T8383] chnl_net:caif_netlink_parms(): no params data found [ 63.851050][ T8383] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.858782][ T8383] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.868496][ T8383] device bridge_slave_0 entered promiscuous mode [ 63.877329][ T8383] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.884635][ T8383] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.892380][ T8383] device bridge_slave_1 entered promiscuous mode [ 63.912287][ T8383] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.923007][ T8383] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.944597][ T8383] team0: Port device team_slave_0 added [ 63.951872][ T8383] team0: Port device team_slave_1 added [ 63.969979][ T8383] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.977054][ T8383] 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. [ 64.006062][ T8383] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.022953][ T8383] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.032438][ T8383] 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. [ 64.061820][ T8383] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.100142][ T8383] device hsr_slave_0 entered promiscuous mode [ 64.107163][ T8383] device hsr_slave_1 entered promiscuous mode [ 64.207475][ T8383] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.217631][ T8383] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.228607][ T8383] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.240271][ T8383] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.264921][ T8383] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.272072][ T8383] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.279898][ T8383] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.287040][ T8383] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.330787][ T8383] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.343427][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.355897][ T3139] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.364537][ T3139] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.372916][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 64.387142][ T8383] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.398531][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.407424][ T3139] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.414764][ T3139] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.426364][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.435343][ T3139] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.442377][ T3139] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.466644][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.476188][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.484815][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.495764][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.511200][ T8383] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.522615][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.531502][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.551331][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.559238][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.572469][ T8383] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.592340][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.612915][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.622483][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.631817][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.643628][ T8383] device veth0_vlan entered promiscuous mode [ 64.657452][ T8383] device veth1_vlan entered promiscuous mode [ 64.680209][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.688436][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.697269][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.708212][ T8383] device veth0_macvtap entered promiscuous mode [ 64.718173][ T8383] device veth1_macvtap entered promiscuous mode [ 64.735623][ T8383] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.743060][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.754684][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.768787][ T8383] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.776883][ T19] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 64.788347][ T8383] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.797807][ T8383] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.807400][ T8383] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.816544][ T8383] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.134965][ T3139] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 65.524316][ T3139] usb 1-1: New USB device found, idVendor=17e9, idProduct=8226, bcdDevice=81.18 [ 65.533567][ T3139] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 65.548160][ T3139] usb 1-1: config 0 descriptor?? [ 65.844756][ T3139] udlfb 1-1:0.0: vendor descriptor not available (-71) [ 65.864811][ T3139] usb 1-1: Read EDID byte 0 failed: -71 [ 65.884651][ T3139] usb 1-1: Read EDID byte 0 failed: -71 [ 65.904085][ T3139] usb 1-1: Read EDID byte 0 failed: -71 [ 65.909676][ T3139] usb 1-1: Unable to get valid EDID from device/display [ 65.957866][ T3139] usb 1-1: submit urb error: -2 [ 65.976824][ T3139] udlfb: probe of 1-1:0.0 failed with error -2 [ 66.054113][ T3139] [drm] vendor descriptor length:b9 data:00 00 00 00 00 00 00 00 00 00 00 [ 66.062658][ T3139] [drm:udl_init.cold] *ERROR* Unrecognized vendor firmware descriptor [ 66.085473][ T3139] [drm:udl_init] *ERROR* Selecting channel failed [ 66.124831][ T3139] [drm] Initialized udl 0.0.1 20120220 for 1-1:0.0 on minor 2 [ 66.132423][ T3139] [drm] Initialized udl on minor 2 [ 66.140599][ T321] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.154217][ T3139] [drm:udl_get_edid_block] *ERROR* Read EDID byte 0 failed err ffffffb9 [ 66.163655][ T3139] udl 1-1:0.0: [drm] Cannot find any crtc or sizes [ 66.175284][ T3139] usb 1-1: USB disconnect, device number 2 [ 66.192934][ T3139] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 66.204791][ T3139] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 66.213185][ T3139] CPU: 0 PID: 3139 Comm: kworker/0:3 Not tainted 5.11.0-syzkaller #0 [ 66.221407][ T3139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.231446][ T3139] Workqueue: usb_hub_wq hub_event [ 66.236462][ T3139] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 66.242610][ T3139] Code: 00 00 66 90 53 48 89 fb 48 83 ec 08 e8 63 61 39 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 96 33 f7 ff 48 89 [ 66.262202][ T3139] RSP: 0018:ffffc9000254f700 EFLAGS: 00010202 [ 66.268253][ T3139] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 66.276209][ T3139] RDX: 0000000000000002 RSI: 0000000000000018 RDI: 0000000000000010 [ 66.284165][ T3139] RBP: ffff8880265468c8 R08: 0000000000000000 R09: ffff888026546a17 [ 66.292121][ T3139] R10: ffffed1004ca8d42 R11: 1ffffffff1ed68ce R12: 0000000000000000 [ 66.300078][ T3139] R13: ffff8880265468d8 R14: ffff888026546810 R15: dead000000000100 [ 66.308031][ T3139] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 66.317051][ T3139] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.323630][ T3139] CR2: 00007ffe8ec251d0 CR3: 0000000018d4d000 CR4: 00000000001506f0 [ 66.331589][ T3139] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.339558][ T3139] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.347599][ T3139] Call Trace: [ 66.350878][ T3139] drm_fbdev_cleanup+0x380/0x440 [ 66.355806][ T3139] ? drm_fbdev_cleanup+0x440/0x440 [ 66.360901][ T3139] drm_fbdev_client_unregister+0x61/0x80 [ 66.367666][ T3139] drm_client_dev_unregister+0x239/0x3b0 [ 66.373305][ T3139] drm_dev_unregister+0xe9/0x2b0 [ 66.378225][ T3139] drm_dev_unplug+0x4e/0xc0 [ 66.382722][ T3139] usb_unbind_interface+0x1d8/0x8d0 [ 66.387908][ T3139] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 66.393702][ T3139] ? kernfs_remove_by_name_ns+0x62/0xb0 [ 66.399236][ T3139] ? usb_unbind_device+0x1a0/0x1a0 [ 66.404337][ T3139] __device_release_driver+0x3bd/0x6f0 [ 66.409785][ T3139] device_release_driver+0x26/0x40 [ 66.414883][ T3139] bus_remove_device+0x2eb/0x5a0 [ 66.419810][ T3139] device_del+0x502/0xd40 [ 66.424124][ T3139] ? __device_links_queue_sync_state+0x3f0/0x3f0 [ 66.430533][ T3139] ? pm_runtime_barrier+0xdc/0x1a0 [ 66.435632][ T3139] usb_disable_device+0x35b/0x7b0 [ 66.440679][ T3139] usb_disconnect.cold+0x27d/0x791 [ 66.445791][ T3139] hub_event+0x1c9c/0x4320 [ 66.450297][ T3139] ? __lock_acquire+0x16b3/0x54c0 [ 66.455310][ T3139] ? hub_port_debounce+0x3c0/0x3c0 [ 66.460492][ T3139] ? __lock_acquire+0x3810/0x54c0 [ 66.465524][ T3139] ? lock_release+0x710/0x710 [ 66.470200][ T3139] ? lock_downgrade+0x6d0/0x6d0 [ 66.475040][ T3139] ? do_raw_spin_lock+0x120/0x2b0 [ 66.480054][ T3139] ? lock_is_held_type+0xd5/0x130 [ 66.485073][ T3139] process_one_work+0x98d/0x1600 [ 66.490013][ T3139] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.495388][ T3139] ? rwlock_bug.part.0+0x90/0x90 [ 66.500317][ T3139] ? _raw_spin_lock_irq+0x41/0x50 [ 66.505336][ T3139] worker_thread+0x82b/0x1120 [ 66.510011][ T3139] ? __kthread_parkme+0x13f/0x1e0 [ 66.515027][ T3139] ? process_one_work+0x1600/0x1600 [ 66.520227][ T3139] kthread+0x3b1/0x4a0 [ 66.524284][ T3139] ? __kthread_bind_mask+0xc0/0xc0 [ 66.529406][ T3139] ret_from_fork+0x1f/0x30 [ 66.533826][ T3139] Modules linked in: [ 66.554364][ T3139] ---[ end trace a4392ef48d76f4aa ]--- [ 66.559934][ T3139] RIP: 0010:drm_client_buffer_vunmap+0x26/0x50 [ 66.566634][ T3139] Code: 00 00 66 90 53 48 89 fb 48 83 ec 08 e8 63 61 39 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 96 33 f7 ff 48 89 [ 66.586486][ T3139] RSP: 0018:ffffc9000254f700 EFLAGS: 00010202 [ 66.592604][ T3139] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 66.600837][ T3139] RDX: 0000000000000002 RSI: 0000000000000018 RDI: 0000000000000010 [ 66.608933][ T3139] RBP: ffff8880265468c8 R08: 0000000000000000 R09: ffff888026546a17 [ 66.617075][ T3139] R10: ffffed1004ca8d42 R11: 1ffffffff1ed68ce R12: 0000000000000000 [ 66.625235][ T3139] R13: ffff8880265468d8 R14: ffff888026546810 R15: dead000000000100 [ 66.633216][ T3139] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 66.642598][ T3139] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.649401][ T3139] CR2: 00007ffe8ec251d0 CR3: 0000000018d4d000 CR4: 00000000001506f0 [ 66.657693][ T3139] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.665825][ T3139] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.673796][ T3139] Kernel panic - not syncing: Fatal exception [ 66.680556][ T3139] Kernel Offset: disabled [ 66.684909][ T3139] Rebooting in 86400 seconds..