Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. 2021/01/05 18:57:38 parsed 1 programs 2021/01/05 18:57:38 executed programs: 0 syzkaller login: [ 37.042966] IPVS: ftp: loaded support on port[0] = 21 [ 37.152898] chnl_net:caif_netlink_parms(): no params data found [ 37.262204] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.268941] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.276000] device bridge_slave_0 entered promiscuous mode [ 37.284653] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.292052] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.299241] device bridge_slave_1 entered promiscuous mode [ 37.316711] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 37.325628] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 37.343909] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 37.351527] team0: Port device team_slave_0 added [ 37.356956] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 37.364532] team0: Port device team_slave_1 added [ 37.379493] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 37.385749] 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. [ 37.411186] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 37.423363] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 37.429747] 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. [ 37.455110] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 37.470134] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 37.477502] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 37.496899] device hsr_slave_0 entered promiscuous mode [ 37.502808] device hsr_slave_1 entered promiscuous mode [ 37.509223] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 37.516196] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 37.583729] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.590169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.596901] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.603484] bridge0: port 1(bridge_slave_0) entered forwarding state [ 37.633290] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 37.640398] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.650950] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 37.659885] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 37.669154] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.676258] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.683961] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 37.694553] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 37.701203] 8021q: adding VLAN 0 to HW filter on device team0 [ 37.710082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 37.717664] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.724056] bridge0: port 1(bridge_slave_0) entered forwarding state [ 37.739290] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 37.746832] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.753231] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.760498] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 37.768242] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 37.778515] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 37.792512] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 37.802758] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 37.814507] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 37.821330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 37.829520] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 37.837056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 37.850625] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 37.857837] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 37.865352] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 37.875619] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 37.889015] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 37.898532] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 37.927928] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 37.935700] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 37.943863] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 37.953248] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 37.961139] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 37.968683] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 37.977044] device veth0_vlan entered promiscuous mode [ 37.986336] device veth1_vlan entered promiscuous mode [ 37.992534] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 38.001607] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 38.013125] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 38.022807] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 38.030680] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 38.038460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 38.047749] device veth0_macvtap entered promiscuous mode [ 38.054556] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 38.062948] device veth1_macvtap entered promiscuous mode [ 38.073030] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 38.082564] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 38.092523] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 38.099762] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 38.108079] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 38.117458] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 38.124673] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 38.233507] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 38.240532] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 38.253032] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 38.261658] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 38.269960] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 38.277082] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 38.278495] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 38.294058] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 38.334707] IPVS: ftp: loaded support on port[0] = 21 [ 38.370233] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 38.376142] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 38.388754] vhci_hcd: connection closed [ 38.389399] vhci_hcd: stop threads [ 38.397094] vhci_hcd: release socket [ 38.401743] vhci_hcd: disconnect device [ 38.892876] IPVS: ftp: loaded support on port[0] = 21 [ 38.898592] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 38.904407] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 38.917767] vhci_hcd: connection closed [ 38.919309] vhci_hcd: stop threads [ 38.926999] vhci_hcd: release socket [ 38.952945] vhci_hcd: disconnect device [ 38.973687] IPVS: ftp: loaded support on port[0] = 21 [ 39.016810] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 39.023243] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 39.032847] vhci_hcd: connection closed [ 39.033247] vhci_hcd: stop threads [ 39.043080] vhci_hcd: release socket [ 39.048319] vhci_hcd: disconnect device [ 39.088619] Bluetooth: hci0: command 0x0409 tx timeout [ 39.538853] IPVS: ftp: loaded support on port[0] = 21 [ 39.549023] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 39.554845] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 39.580520] vhci_hcd: connection closed [ 39.580984] vhci_hcd: stop threads [ 39.593675] vhci_hcd: release socket [ 39.602197] vhci_hcd: disconnect device [ 39.672777] IPVS: ftp: loaded support on port[0] = 21 [ 39.714045] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 39.719890] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 39.740171] vhci_hcd: connection closed [ 39.740349] vhci_hcd: stop threads [ 39.748950] vhci_hcd: release socket [ 39.752753] vhci_hcd: disconnect device [ 40.243993] IPVS: ftp: loaded support on port[0] = 21 [ 40.249680] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 40.255499] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 40.269615] vhci_hcd: connection closed [ 40.269791] vhci_hcd: stop threads [ 40.277664] vhci_hcd: release socket [ 40.281380] vhci_hcd: disconnect device 2021/01/05 18:57:43 executed programs: 3 [ 40.955988] IPVS: ftp: loaded support on port[0] = 21 [ 41.007740] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 41.013568] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 41.032225] vhci_hcd: connection closed [ 41.032429] vhci_hcd: stop threads [ 41.040080] vhci_hcd: release socket [ 41.043964] vhci_hcd: disconnect device [ 41.166371] Bluetooth: hci0: command 0x041b tx timeout [ 41.532481] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 41.538309] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 41.549531] IPVS: ftp: loaded support on port[0] = 21 [ 41.567047] vhci_hcd: connection closed [ 41.568309] vhci_hcd: stop threads [ 41.575904] vhci_hcd: release socket [ 41.584422] vhci_hcd: disconnect device [ 41.616498] IPVS: ftp: loaded support on port[0] = 21 [ 41.649640] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 41.655467] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 41.665615] vhci_hcd: connection closed [ 41.665732] vhci_hcd: stop threads [ 41.673901] vhci_hcd: release socket [ 41.678898] vhci_hcd: disconnect device [ 42.172504] IPVS: ftp: loaded support on port[0] = 21 [ 42.178298] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 42.184102] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 42.218106] vhci_hcd: connection closed [ 42.218248] vhci_hcd: stop threads [ 42.229410] vhci_hcd: release socket [ 42.239282] vhci_hcd: disconnect device [ 42.308748] IPVS: ftp: loaded support on port[0] = 21 [ 42.356216] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 42.362060] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 42.379283] vhci_hcd: connection closed [ 42.379476] vhci_hcd: stop threads [ 42.388544] vhci_hcd: release socket [ 42.392343] vhci_hcd: disconnect device [ 42.880554] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 42.884318] IPVS: ftp: loaded support on port[0] = 21 [ 42.886391] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 42.903759] vhci_hcd: connection closed [ 42.903927] vhci_hcd: stop threads [ 42.912752] vhci_hcd: release socket [ 42.922799] vhci_hcd: disconnect device [ 43.245441] Bluetooth: hci0: command 0x040f tx timeout [ 43.860495] IPVS: ftp: loaded support on port[0] = 21 [ 43.910740] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 43.916600] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 43.932783] vhci_hcd: connection closed [ 43.932949] vhci_hcd: stop threads [ 43.942560] vhci_hcd: release socket [ 43.948054] vhci_hcd: disconnect device [ 44.436409] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 44.439158] IPVS: ftp: loaded support on port[0] = 21 [ 44.442235] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 44.465607] vhci_hcd: connection closed [ 44.467813] vhci_hcd: stop threads [ 44.476772] vhci_hcd: release socket [ 44.480778] vhci_hcd: disconnect device [ 44.510527] IPVS: ftp: loaded support on port[0] = 21 [ 44.544383] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 44.550200] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 44.559773] vhci_hcd: connection closed [ 44.559896] vhci_hcd: stop threads [ 44.568628] vhci_hcd: release socket [ 44.572322] vhci_hcd: disconnect device [ 45.066167] IPVS: ftp: loaded support on port[0] = 21 [ 45.075276] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 45.081118] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 45.105664] vhci_hcd: connection closed [ 45.107126] vhci_hcd: stop threads [ 45.116174] vhci_hcd: release socket [ 45.120093] vhci_hcd: disconnect device [ 45.163739] IPVS: ftp: loaded support on port[0] = 21 [ 45.215578] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 45.221418] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 45.233020] vhci_hcd: connection closed [ 45.233150] vhci_hcd: stop threads [ 45.242563] vhci_hcd: release socket [ 45.249132] vhci_hcd: disconnect device [ 45.324800] Bluetooth: hci0: command 0x0419 tx timeout [ 45.736513] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 45.742351] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 45.746774] IPVS: ftp: loaded support on port[0] = 21 [ 45.756066] vhci_hcd: connection closed [ 45.756269] vhci_hcd: stop threads [ 45.763999] vhci_hcd: release socket [ 45.769913] vhci_hcd: disconnect device [ 45.814274] IPVS: ftp: loaded support on port[0] = 21 [ 45.862820] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 45.868652] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 45.879601] vhci_hcd: connection closed [ 45.879766] vhci_hcd: stop threads [ 45.889567] vhci_hcd: release socket [ 45.893316] vhci_hcd: disconnect device [ 46.380924] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 46.386757] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 46.401848] IPVS: ftp: loaded support on port[0] = 21 2021/01/05 18:57:49 executed programs: 10 [ 46.421376] vhci_hcd: connection closed [ 46.431921] vhci_hcd: stop threads [ 46.439622] vhci_hcd: release socket [ 46.447895] vhci_hcd: disconnect device [ 46.517870] IPVS: ftp: loaded support on port[0] = 21 [ 46.556943] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 46.562776] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 46.584802] vhci_hcd: connection closed [ 46.585127] vhci_hcd: stop threads [ 46.593537] vhci_hcd: release socket [ 46.598691] vhci_hcd: disconnect device [ 47.091553] IPVS: ftp: loaded support on port[0] = 21 [ 47.097344] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 47.103150] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 47.136826] vhci_hcd: connection closed [ 47.137020] vhci_hcd: stop threads [ 47.148037] vhci_hcd: release socket [ 47.164284] vhci_hcd: disconnect device [ 47.216802] IPVS: ftp: loaded support on port[0] = 21 [ 47.263716] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 47.269548] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 47.304030] vhci_hcd: connection closed [ 47.304346] vhci_hcd: stop threads [ 47.311926] vhci_hcd: release socket [ 47.316903] vhci_hcd: disconnect device [ 47.806106] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 47.811955] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 47.826897] IPVS: ftp: loaded support on port[0] = 21 [ 47.842350] vhci_hcd: connection closed [ 47.842524] vhci_hcd: stop threads [ 47.850808] vhci_hcd: release socket [ 47.857568] vhci_hcd: disconnect device [ 47.899808] IPVS: ftp: loaded support on port[0] = 21 [ 47.932345] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 47.938290] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 47.947691] vhci_hcd: connection closed [ 47.947905] vhci_hcd: stop threads [ 47.956616] vhci_hcd: release socket [ 47.960453] vhci_hcd: disconnect device [ 48.449998] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 48.452840] IPVS: ftp: loaded support on port[0] = 21 [ 48.455832] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 48.462184] vhci_hcd: connection closed [ 48.462428] vhci_hcd: stop threads [ 48.476909] vhci_hcd: release socket [ 48.480914] vhci_hcd: disconnect device [ 49.700944] IPVS: ftp: loaded support on port[0] = 21 [ 49.738618] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) [ 49.744652] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 49.755801] vhci_hcd: connection closed [ 49.755896] vhci_hcd: stop threads [ 49.764086] vhci_hcd: release socket [ 49.767843] vhci_hcd: disconnect device [ 50.262675] IPVS: ftp: loaded support on port[0] = 21 [ 50.273906] vhci_hcd vhci_hcd.0: pdev(0) rhport(1) sockfd(3) [ 50.279750] vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed) [ 50.308411] vhci_hcd: connection closed [ 50.308957] ================================================================== [ 50.320499] BUG: KASAN: null-ptr-deref in kthread_stop+0x72/0x6b0 [ 50.326747] Write of size 4 at addr 000000000000001c by task kworker/u4:3/205 [ 50.334031] [ 50.335669] CPU: 1 PID: 205 Comm: kworker/u4:3 Not tainted 4.19.164-syzkaller #0 [ 50.343291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.352741] Workqueue: usbip_event event_handler [ 50.357500] Call Trace: [ 50.360103] dump_stack+0x1fc/0x2fe [ 50.363836] kasan_report_error.cold+0x15b/0x1c7 [ 50.368675] ? kthread_stop+0x72/0x6b0 [ 50.372568] kasan_report+0x8f/0x96 [ 50.376204] ? kthread_stop+0x72/0x6b0 [ 50.380095] kthread_stop+0x72/0x6b0 [ 50.383823] vhci_shutdown_connection+0x14e/0x280 [ 50.388675] ? mark_held_locks+0xa6/0xf0 [ 50.392754] ? kfree+0x110/0x210 [ 50.396127] ? event_handler+0x14c/0x4f0 [ 50.400337] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.404933] event_handler+0x1f0/0x4f0 [ 50.408836] process_one_work+0x864/0x1570 [ 50.413095] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 50.417868] worker_thread+0x64c/0x1130 [ 50.421860] ? process_one_work+0x1570/0x1570 [ 50.426512] kthread+0x33f/0x460 [ 50.429901] ? kthread_park+0x180/0x180 [ 50.433891] ret_from_fork+0x24/0x30 [ 50.437809] ================================================================== [ 50.445180] Disabling lock debugging due to kernel taint [ 50.458111] Kernel panic - not syncing: panic_on_warn set ... [ 50.458111] [ 50.465666] CPU: 1 PID: 205 Comm: kworker/u4:3 Tainted: G B 4.19.164-syzkaller #0 [ 50.474678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.484170] Workqueue: usbip_event event_handler [ 50.489013] Call Trace: [ 50.491608] dump_stack+0x1fc/0x2fe [ 50.495243] panic+0x26a/0x50e [ 50.498440] ? __warn_printk+0xf3/0xf3 [ 50.502345] ? preempt_schedule_common+0x45/0xc0 [ 50.507112] ? ___preempt_schedule+0x16/0x18 [ 50.511527] ? trace_hardirqs_on+0x55/0x210 [ 50.515858] kasan_end_report+0x43/0x49 [ 50.519926] kasan_report_error.cold+0xa7/0x1c7 [ 50.524679] ? kthread_stop+0x72/0x6b0 [ 50.529094] kasan_report+0x8f/0x96 [ 50.532726] ? kthread_stop+0x72/0x6b0 [ 50.536618] kthread_stop+0x72/0x6b0 [ 50.540338] vhci_shutdown_connection+0x14e/0x280 [ 50.545189] ? mark_held_locks+0xa6/0xf0 [ 50.549257] ? kfree+0x110/0x210 [ 50.552764] ? event_handler+0x14c/0x4f0 [ 50.556836] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.561517] event_handler+0x1f0/0x4f0 [ 50.565417] process_one_work+0x864/0x1570 [ 50.569751] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 50.573248] usb 9-2: new low-speed USB device number 2 using vhci_hcd [ 50.574598] worker_thread+0x64c/0x1130 [ 50.585310] ? process_one_work+0x1570/0x1570 [ 50.589817] kthread+0x33f/0x460 [ 50.593200] ? kthread_park+0x180/0x180 [ 50.597182] ret_from_fork+0x24/0x30 [ 50.602167] Kernel Offset: disabled [ 50.606074] Rebooting in 86400 seconds..