[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. syzkaller login: [ 1584.228279][ T8399] IPVS: ftp: loaded support on port[0] = 21 [ 1584.374022][ T8399] chnl_net:caif_netlink_parms(): no params data found [ 1584.424150][ T8399] bridge0: port 1(bridge_slave_0) entered blocking state [ 1584.433019][ T8399] bridge0: port 1(bridge_slave_0) entered disabled state [ 1584.441584][ T8399] device bridge_slave_0 entered promiscuous mode [ 1584.452259][ T8399] bridge0: port 2(bridge_slave_1) entered blocking state [ 1584.459537][ T8399] bridge0: port 2(bridge_slave_1) entered disabled state [ 1584.467711][ T8399] device bridge_slave_1 entered promiscuous mode [ 1584.487563][ T8399] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1584.498914][ T8399] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1584.521419][ T8399] team0: Port device team_slave_0 added [ 1584.528481][ T8399] team0: Port device team_slave_1 added [ 1584.546147][ T8399] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1584.553134][ T8399] 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. [ 1584.580649][ T8399] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1584.593372][ T8399] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1584.600397][ T8399] 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. [ 1584.626483][ T8399] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1584.654379][ T8399] device hsr_slave_0 entered promiscuous mode [ 1584.663266][ T8399] device hsr_slave_1 entered promiscuous mode [ 1584.755428][ T8399] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1584.766014][ T8399] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1584.775901][ T8399] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1584.785858][ T8399] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1584.809266][ T8399] bridge0: port 2(bridge_slave_1) entered blocking state [ 1584.816479][ T8399] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1584.824410][ T8399] bridge0: port 1(bridge_slave_0) entered blocking state [ 1584.831591][ T8399] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1584.872850][ T8399] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1584.885941][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1584.896412][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 1584.905112][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 1584.914128][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1584.927782][ T8399] 8021q: adding VLAN 0 to HW filter on device team0 [ 1584.938888][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1584.948126][ T8384] bridge0: port 1(bridge_slave_0) entered blocking state [ 1584.955229][ T8384] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1584.967685][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1584.977134][ T8625] bridge0: port 2(bridge_slave_1) entered blocking state [ 1584.984249][ T8625] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1585.009704][ T8399] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1585.021514][ T8399] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1585.036250][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1585.045731][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1585.054252][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1585.063227][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1585.081657][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1585.089027][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1585.096485][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1585.104380][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1585.114661][ T8399] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1585.134793][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1585.154618][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1585.163023][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1585.172153][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1585.183542][ T8399] device veth0_vlan entered promiscuous mode [ 1585.195627][ T8399] device veth1_vlan entered promiscuous mode [ 1585.216395][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1585.225124][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1585.234050][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1585.246089][ T8399] device veth0_macvtap entered promiscuous mode [ 1585.255752][ T8399] device veth1_macvtap entered promiscuous mode [ 1585.272951][ T8399] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1585.280602][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1585.289669][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1585.304328][ T8399] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1585.312098][ T8384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1585.325173][ T8399] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1585.334474][ T8399] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1585.343455][ T8399] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1585.354994][ T8399] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1585.427558][ T8395] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1585.455574][ T8395] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1585.469477][ T126] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 executing program [ 1585.477754][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1585.478396][ T126] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1585.500680][ T8544] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1585.539676][ T8647] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1585.637151][ T8653] loop0: detected capacity change from 61456 to 0 executing program [ 1585.693672][ T8656] loop0: detected capacity change from 61456 to 0 executing program [ 1585.781933][ T8660] loop0: detected capacity change from 61456 to 0 executing program [ 1585.854021][ T8664] loop0: detected capacity change from 61456 to 0 executing program [ 1585.903662][ T8668] loop0: detected capacity change from 61456 to 0 executing program [ 1585.993538][ T8672] loop0: detected capacity change from 61456 to 0 executing program [ 1586.063831][ T8676] loop0: detected capacity change from 61456 to 0 executing program [ 1586.144624][ T8682] loop0: detected capacity change from 61456 to 0 executing program [ 1586.238427][ T8687] loop0: detected capacity change from 61456 to 0 [ 1586.241109][ T8544] Bluetooth: hci0: command 0x0409 tx timeout executing program executing program [ 1586.358906][ T8692] loop0: detected capacity change from 61456 to 0 executing program [ 1586.422319][ T8696] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1586.532510][ T8701] loop0: detected capacity change from 61456 to 0 [ 1586.592828][ T8706] loop0: detected capacity change from 61456 to 0 executing program [ 1586.683684][ T8711] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1586.755679][ T8716] loop0: detected capacity change from 61456 to 0 executing program [ 1586.815505][ T8721] loop0: detected capacity change from 61456 to 0 [ 1586.902645][ T8725] loop0: detected capacity change from 61456 to 0 executing program [ 1586.977788][ T8730] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1587.074201][ T8735] loop0: detected capacity change from 61456 to 0 executing program [ 1587.132831][ T8739] loop0: detected capacity change from 61456 to 0 executing program [ 1587.222347][ T8743] loop0: detected capacity change from 61456 to 0 executing program [ 1587.292132][ T8747] loop0: detected capacity change from 61456 to 0 executing program [ 1587.361860][ T8751] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1587.451355][ T8757] loop0: detected capacity change from 61456 to 0 executing program [ 1587.513217][ T8761] loop0: detected capacity change from 61456 to 0 executing program [ 1587.582193][ T8765] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1587.662820][ T8771] loop0: detected capacity change from 61456 to 0 [ 1587.732717][ T8775] loop0: detected capacity change from 61456 to 0 executing program [ 1587.812678][ T8781] loop0: detected capacity change from 61456 to 0 executing program [ 1587.906044][ T8786] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1588.002123][ T8791] loop0: detected capacity change from 61456 to 0 executing program [ 1588.062551][ T8794] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1588.131203][ T8798] loop0: detected capacity change from 61456 to 0 [ 1588.193473][ T8803] loop0: detected capacity change from 61456 to 0 executing program [ 1588.274669][ T8809] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1588.320608][ T8544] Bluetooth: hci0: command 0x041b tx timeout [ 1588.350610][ T8814] loop0: detected capacity change from 61456 to 0 executing program [ 1588.431344][ T8817] loop0: detected capacity change from 61456 to 0 executing program [ 1588.502907][ T8821] loop0: detected capacity change from 61456 to 0 executing program [ 1588.572215][ T8825] loop0: detected capacity change from 61456 to 0 executing program [ 1588.642919][ T8829] loop0: detected capacity change from 61456 to 0 executing program [ 1588.712815][ T8835] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1588.787550][ T8840] loop0: detected capacity change from 61456 to 0 executing program [ 1588.862760][ T8845] loop0: detected capacity change from 61456 to 0 executing program [ 1588.942492][ T8851] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1589.027509][ T8857] loop0: detected capacity change from 61456 to 0 executing program [ 1589.092009][ T8860] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1589.181637][ T8866] loop0: detected capacity change from 61456 to 0 executing program [ 1589.243169][ T8870] loop0: detected capacity change from 61456 to 0 executing program [ 1589.333096][ T8874] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1589.419978][ T8881] loop0: detected capacity change from 61456 to 0 executing program [ 1589.501599][ T8884] loop0: detected capacity change from 61456 to 0 [ 1589.567576][ T8888] loop0: detected capacity change from 61456 to 0 executing program [ 1589.641557][ T8893] loop0: detected capacity change from 61456 to 0 executing program executing program [ 1589.722104][ T8898] loop0: detected capacity change from 61456 to 0 executing program [ 1589.803357][ T8902] loop0: detected capacity change from 61456 to 0 [ 1589.874036][ T8906] loop0: detected capacity change from 61456 to 0 [ 1589.888523][ C0] ================================================================== [ 1589.896862][ C0] BUG: KASAN: use-after-free in do_raw_spin_unlock+0x481/0x8a0 [ 1589.904543][ C0] Read of size 4 at addr ffff888020c03154 by task ksoftirqd/0/12 [ 1589.912242][ C0] [ 1589.914551][ C0] CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.11.0-syzkaller #0 [ 1589.922432][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1589.932469][ C0] Call Trace: [ 1589.935733][ C0] dump_stack+0x137/0x1be [ 1589.940159][ C0] print_address_description+0x5f/0x3a0 [ 1589.945722][ C0] kasan_report+0x15e/0x200 [ 1589.950211][ C0] ? do_raw_spin_unlock+0x481/0x8a0 [ 1589.955414][ C0] do_raw_spin_unlock+0x481/0x8a0 [ 1589.961816][ C0] _raw_spin_unlock_irqrestore+0x20/0x60 [ 1589.967565][ C0] __wake_up+0xe2/0x140 [ 1589.971710][ C0] blk_update_request+0x7f7/0x14f0 [ 1589.976846][ C0] blk_mq_end_request+0x39/0x70 [ 1589.981705][ C0] blk_done_softirq+0x2fd/0x380 [ 1589.986554][ C0] __do_softirq+0x318/0x714 [ 1589.991165][ C0] ? run_ksoftirqd+0x63/0xa0 [ 1589.995767][ C0] ? ksoftirqd_should_run+0x20/0x20 [ 1590.000964][ C0] run_ksoftirqd+0x63/0xa0 [ 1590.005366][ C0] smpboot_thread_fn+0x572/0x970 [ 1590.010327][ C0] ? cpu_report_death+0x180/0x180 [ 1590.015336][ C0] kthread+0x39a/0x3c0 [ 1590.019420][ C0] ? cpu_report_death+0x180/0x180 [ 1590.024423][ C0] ? kthread_blkcg+0xd0/0xd0 [ 1590.028996][ C0] ret_from_fork+0x1f/0x30 [ 1590.033420][ C0] [ 1590.035727][ C0] Allocated by task 8906: [ 1590.040120][ C0] ____kasan_kmalloc+0xbd/0xf0 [ 1590.044865][ C0] kmem_cache_alloc_trace+0x200/0x300 [ 1590.050261][ C0] lmLogInit+0x26e/0x1530 [ 1590.054609][ C0] lmLogOpen+0x4c6/0xeb0 [ 1590.058839][ C0] jfs_mount_rw+0x91/0x4a0 [ 1590.063266][ C0] jfs_fill_super+0x57e/0x960 [ 1590.067921][ C0] mount_bdev+0x26c/0x3a0 [ 1590.072276][ C0] legacy_get_tree+0xea/0x180 [ 1590.076961][ C0] vfs_get_tree+0x86/0x270 [ 1590.081358][ C0] path_mount+0x17ad/0x2a00 [ 1590.085869][ C0] __se_sys_mount+0x28c/0x320 [ 1590.090522][ C0] do_syscall_64+0x2d/0x70 [ 1590.094954][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1590.100826][ C0] [ 1590.103141][ C0] Freed by task 8906: [ 1590.107096][ C0] kasan_set_track+0x3d/0x70 [ 1590.111664][ C0] kasan_set_free_info+0x1f/0x40 [ 1590.116583][ C0] ____kasan_slab_free+0xe2/0x110 [ 1590.121584][ C0] slab_free_freelist_hook+0xd6/0x1a0 [ 1590.126935][ C0] kfree+0xd1/0x2a0 [ 1590.130720][ C0] lmLogInit+0xfb5/0x1530 [ 1590.135029][ C0] lmLogOpen+0x4c6/0xeb0 [ 1590.139249][ C0] jfs_mount_rw+0x91/0x4a0 [ 1590.143645][ C0] jfs_fill_super+0x57e/0x960 [ 1590.148301][ C0] mount_bdev+0x26c/0x3a0 [ 1590.152606][ C0] legacy_get_tree+0xea/0x180 [ 1590.157261][ C0] vfs_get_tree+0x86/0x270 [ 1590.161655][ C0] path_mount+0x17ad/0x2a00 [ 1590.166136][ C0] __se_sys_mount+0x28c/0x320 [ 1590.170789][ C0] do_syscall_64+0x2d/0x70 [ 1590.175185][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1590.181070][ C0] [ 1590.183374][ C0] Last potentially related work creation: [ 1590.189073][ C0] kasan_save_stack+0x27/0x50 [ 1590.193741][ C0] kasan_record_aux_stack+0xcc/0x100 [ 1590.199006][ C0] insert_work+0x54/0x400 [ 1590.203364][ C0] __queue_work+0x97f/0xcc0 [ 1590.207845][ C0] queue_work_on+0xc1/0x120 [ 1590.212351][ C0] call_usermodehelper_exec+0x206/0x3d0 [ 1590.217891][ C0] kobject_uevent_env+0x1349/0x1730 [ 1590.223066][ C0] kobject_synth_uevent+0x368/0x8a0 [ 1590.228243][ C0] uevent_store+0x47/0x70 [ 1590.232637][ C0] kernfs_fop_write_iter+0x3b6/0x510 [ 1590.237931][ C0] vfs_write+0x896/0xab0 [ 1590.242182][ C0] ksys_write+0x11b/0x220 [ 1590.246490][ C0] do_syscall_64+0x2d/0x70 [ 1590.250889][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1590.256761][ C0] [ 1590.259079][ C0] The buggy address belongs to the object at ffff888020c03100 [ 1590.259079][ C0] which belongs to the cache kmalloc-192 of size 192 [ 1590.273110][ C0] The buggy address is located 84 bytes inside of [ 1590.273110][ C0] 192-byte region [ffff888020c03100, ffff888020c031c0) [ 1590.286288][ C0] The buggy address belongs to the page: [ 1590.291907][ C0] page:000000004af063c2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20c03 [ 1590.302048][ C0] flags: 0xfff00000000200(slab) [ 1590.307050][ C0] raw: 00fff00000000200 ffffea000083b4c0 0000000300000003 ffff888011041500 [ 1590.315632][ C0] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 1590.324198][ C0] page dumped because: kasan: bad access detected [ 1590.330599][ C0] [ 1590.332904][ C0] Memory state around the buggy address: [ 1590.338521][ C0] ffff888020c03000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1590.346559][ C0] ffff888020c03080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 1590.354597][ C0] >ffff888020c03100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1590.362634][ C0] ^ [ 1590.369284][ C0] ffff888020c03180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 1590.377938][ C0] ffff888020c03200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1590.385975][ C0] ================================================================== [ 1590.394012][ C0] Disabling lock debugging due to kernel taint [ 1590.400136][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 1590.406706][ C0] CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G B 5.11.0-syzkaller #0 [ 1590.415958][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1590.425990][ C0] Call Trace: [ 1590.429255][ C0] dump_stack+0x137/0x1be [ 1590.433569][ C0] ? panic+0x1f3/0x800 [ 1590.437687][ C0] panic+0x291/0x800 [ 1590.441562][ C0] kasan_report+0x1fb/0x200 [ 1590.446056][ C0] ? do_raw_spin_unlock+0x481/0x8a0 [ 1590.451233][ C0] do_raw_spin_unlock+0x481/0x8a0 [ 1590.456271][ C0] _raw_spin_unlock_irqrestore+0x20/0x60 [ 1590.461932][ C0] __wake_up+0xe2/0x140 [ 1590.466085][ C0] blk_update_request+0x7f7/0x14f0 [ 1590.471187][ C0] blk_mq_end_request+0x39/0x70 [ 1590.476034][ C0] blk_done_softirq+0x2fd/0x380 [ 1590.480871][ C0] __do_softirq+0x318/0x714 [ 1590.485369][ C0] ? run_ksoftirqd+0x63/0xa0 [ 1590.489944][ C0] ? ksoftirqd_should_run+0x20/0x20 [ 1590.495116][ C0] run_ksoftirqd+0x63/0xa0 [ 1590.499509][ C0] smpboot_thread_fn+0x572/0x970 [ 1590.504428][ C0] ? cpu_report_death+0x180/0x180 [ 1590.509428][ C0] kthread+0x39a/0x3c0 [ 1590.513484][ C0] ? cpu_report_death+0x180/0x180 [ 1590.518495][ C0] ? kthread_blkcg+0xd0/0xd0 [ 1590.523060][ C0] ret_from_fork+0x1f/0x30 [ 1590.528246][ C0] Kernel Offset: disabled [ 1590.532610][ C0] Rebooting in 86400 seconds..