Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.57' (ECDSA) to the list of known hosts. syzkaller login: [ 71.657041][ T8518] IPVS: ftp: loaded support on port[0] = 21 [ 71.830456][ T8518] chnl_net:caif_netlink_parms(): no params data found [ 71.882695][ T8518] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.890364][ T8518] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.898771][ T8518] device bridge_slave_0 entered promiscuous mode [ 71.909202][ T8518] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.916978][ T8518] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.925071][ T8518] device bridge_slave_1 entered promiscuous mode [ 71.946007][ T8518] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.957017][ T8518] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.979461][ T8518] team0: Port device team_slave_0 added [ 71.986852][ T8518] team0: Port device team_slave_1 added [ 72.005520][ T8518] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.012460][ T8518] 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. [ 72.039224][ T8518] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.052041][ T8518] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.059168][ T8518] 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. [ 72.085124][ T8518] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.113178][ T8518] device hsr_slave_0 entered promiscuous mode [ 72.119824][ T8518] device hsr_slave_1 entered promiscuous mode [ 72.225163][ T8518] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.236369][ T8518] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.247378][ T8518] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.256424][ T8518] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.286195][ T8518] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.293430][ T8518] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.301052][ T8518] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.308218][ T8518] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.356589][ T8518] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.370352][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.382918][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.391404][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.400068][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.414825][ T8518] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.435544][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.445389][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.452435][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.460372][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.468956][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.476079][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.495064][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.504686][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.523197][ T8518] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.534258][ T8518] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.546907][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.555341][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.564291][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.573870][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.593460][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.600817][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.616926][ T8518] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.644007][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.659648][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.667925][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.677644][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.688325][ T8518] device veth0_vlan entered promiscuous mode [ 72.700822][ T8518] device veth1_vlan entered promiscuous mode [ 72.725024][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.734440][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.742596][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.756132][ T8518] device veth0_macvtap entered promiscuous mode [ 72.766767][ T8518] device veth1_macvtap entered promiscuous mode [ 72.785332][ T8518] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.795086][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.805352][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.817758][ T8518] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.825257][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.835567][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.846548][ T8518] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.857164][ T8518] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.865988][ T8518] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.875600][ T8518] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.973300][ T83] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.981303][ T83] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 73.019419][ T29] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.029065][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.039036][ T29] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.050587][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 73.654143][ T3008] Bluetooth: hci0: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 75.733589][ T3008] Bluetooth: hci0: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 77.814708][ T3008] Bluetooth: hci0: command 0x040f tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 77.991524][ T8530] ================================================================== [ 77.999906][ T8530] BUG: KASAN: use-after-free in kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.008406][ T8530] Write of size 1 at addr ffff8880235cd800 by task systemd-rfkill/8530 [ 78.016634][ T8530] [ 78.018969][ T8530] CPU: 1 PID: 8530 Comm: systemd-rfkill Not tainted 5.10.0-rc5-next-20201127-syzkaller #0 [ 78.028847][ T8530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.038900][ T8530] Call Trace: [ 78.042197][ T8530] dump_stack+0x107/0x163 [ 78.046549][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.052617][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.058692][ T8530] print_address_description.constprop.0.cold+0x5b/0x2f8 [ 78.065735][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.071802][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.077867][ T8530] kasan_report.cold+0x79/0xd5 [ 78.082661][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.088734][ T8530] check_memory_region+0x13d/0x180 [ 78.093845][ T8530] memcpy+0x39/0x60 [ 78.097672][ T8530] kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.103569][ T8530] ? rwlock_bug.part.0+0x90/0x90 [ 78.108507][ T8530] ? kernfs_name_hash+0x120/0x120 [ 78.113562][ T8530] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 78.118972][ T8530] kernfs_path_from_node+0x3a/0x60 [ 78.124088][ T8530] get_mm_memcg_path+0xb2/0xf0 [ 78.128858][ T8530] __mmap_lock_do_trace_start_locking+0x25/0x2d0 [ 78.135188][ T8530] do_user_addr_fault+0x638/0xc50 [ 78.140217][ T8530] ? irqentry_enter+0x43/0x50 [ 78.144903][ T8530] exc_page_fault+0x9e/0x180 [ 78.149495][ T8530] ? asm_exc_page_fault+0x8/0x30 [ 78.154432][ T8530] asm_exc_page_fault+0x1e/0x30 [ 78.159280][ T8530] RIP: 0033:0x7f42776d4798 [ 78.163725][ T8530] Code: Unable to access opcode bytes at RIP 0x7f42776d476e. [ 78.171110][ T8530] RSP: 002b:00007fff34baaf68 EFLAGS: 00010202 [ 78.177212][ T8530] RAX: 00007f42776d4798 RBX: 00007f4278d7d9e0 RCX: 0000000000000000 [ 78.185184][ T8530] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 00007f4277918088 [ 78.193164][ T8530] RBP: 00007fff34bab070 R08: 0000000000000000 R09: 00007f4278723808 [ 78.201135][ T8530] R10: 00007f4277912000 R11: 0000000000000012 R12: 00007f4277910a50 [ 78.209114][ T8530] R13: 00007fff34baafb0 R14: 00007f4278d86040 R15: 0000000000000000 [ 78.217105][ T8530] [ 78.219445][ T8530] Allocated by task 9024: [ 78.223781][ T8530] kasan_save_stack+0x1b/0x40 [ 78.228475][ T8530] ____kasan_kmalloc.constprop.0+0xa0/0xd0 [ 78.234282][ T8530] trace_mmap_lock_reg+0x196/0x550 [ 78.239393][ T8530] tracepoint_add_func+0x304/0x990 [ 78.244504][ T8530] tracepoint_probe_register+0x9c/0xe0 [ 78.249963][ T8530] trace_event_reg+0x28f/0x350 [ 78.254742][ T8530] perf_trace_event_init+0x549/0xa20 [ 78.260136][ T8530] perf_trace_init+0x176/0x240 [ 78.264906][ T8530] perf_tp_event_init+0xa2/0x120 [ 78.269842][ T8530] perf_try_init_event+0x12a/0x560 [ 78.274953][ T8530] perf_event_alloc.part.0+0xe3b/0x38e0 [ 78.280514][ T8530] __do_sys_perf_event_open+0x72c/0x2cb0 [ 78.286144][ T8530] do_syscall_64+0x2d/0x70 [ 78.290564][ T8530] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 78.296445][ T8530] [ 78.298768][ T8530] Freed by task 9024: [ 78.302751][ T8530] kasan_save_stack+0x1b/0x40 [ 78.307426][ T8530] kasan_set_track+0x1c/0x30 [ 78.312011][ T8530] kasan_set_free_info+0x20/0x30 [ 78.316960][ T8530] ____kasan_slab_free.part.0+0xe1/0x110 [ 78.322618][ T8530] slab_free_freelist_hook+0x82/0x1d0 [ 78.328010][ T8530] kfree+0xe5/0x5c0 [ 78.331822][ T8530] trace_mmap_lock_unreg+0xba/0x160 [ 78.337020][ T8530] tracepoint_probe_unregister+0x5b6/0x890 [ 78.342826][ T8530] trace_event_reg+0x181/0x350 [ 78.347587][ T8530] perf_trace_event_unreg.isra.0+0xac/0x250 [ 78.353474][ T8530] perf_trace_destroy+0xb5/0xf0 [ 78.358320][ T8530] _free_event+0x2ee/0x1300 [ 78.362822][ T8530] perf_event_release_kernel+0xa24/0xe00 [ 78.368467][ T8530] perf_release+0x33/0x40 [ 78.372794][ T8530] __fput+0x283/0x920 [ 78.376776][ T8530] task_work_run+0xdd/0x190 [ 78.381276][ T8530] exit_to_user_mode_prepare+0x1f0/0x200 [ 78.386914][ T8530] syscall_exit_to_user_mode+0x36/0x260 [ 78.392460][ T8530] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 78.398346][ T8530] [ 78.400674][ T8530] The buggy address belongs to the object at ffff8880235cd800 [ 78.400674][ T8530] which belongs to the cache kmalloc-1k of size 1024 [ 78.414731][ T8530] The buggy address is located 0 bytes inside of [ 78.414731][ T8530] 1024-byte region [ffff8880235cd800, ffff8880235cdc00) [ 78.427915][ T8530] The buggy address belongs to the page: [ 78.433575][ T8530] page:0000000010e16530 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x235cc [ 78.443745][ T8530] head:0000000010e16530 order:2 compound_mapcount:0 compound_pincount:0 [ 78.452070][ T8530] flags: 0xfff00000010200(slab|head) [ 78.457366][ T8530] raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888010041140 [ 78.465959][ T8530] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000 [ 78.474551][ T8530] page dumped because: kasan: bad access detected [ 78.480951][ T8530] [ 78.483289][ T8530] Memory state around the buggy address: [ 78.488931][ T8530] ffff8880235cd700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 78.496991][ T8530] ffff8880235cd780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 78.505055][ T8530] >ffff8880235cd800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 78.513106][ T8530] ^ [ 78.517175][ T8530] ffff8880235cd880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 78.525232][ T8530] ffff8880235cd900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 78.533283][ T8530] ================================================================== [ 78.541363][ T8530] Disabling lock debugging due to kernel taint [ 78.547517][ T8530] Kernel panic - not syncing: panic_on_warn set ... [ 78.554098][ T8530] CPU: 1 PID: 8530 Comm: systemd-rfkill Tainted: G B 5.10.0-rc5-next-20201127-syzkaller #0 [ 78.565376][ T8530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.575420][ T8530] Call Trace: [ 78.578713][ T8530] dump_stack+0x107/0x163 [ 78.583038][ T8530] ? kernfs_path_from_node_locked+0x950/0xc80 [ 78.589092][ T8530] panic+0x306/0x73d [ 78.592983][ T8530] ? __warn_printk+0xf3/0xf3 [ 78.597568][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.603655][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.609731][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.615797][ T8530] end_report+0x58/0x5e [ 78.619944][ T8530] kasan_report.cold+0x67/0xd5 [ 78.624703][ T8530] ? kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.630764][ T8530] check_memory_region+0x13d/0x180 [ 78.635885][ T8530] memcpy+0x39/0x60 [ 78.639685][ T8530] kernfs_path_from_node_locked+0x9b3/0xc80 [ 78.645572][ T8530] ? rwlock_bug.part.0+0x90/0x90 [ 78.650501][ T8530] ? kernfs_name_hash+0x120/0x120 [ 78.655521][ T8530] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 78.660905][ T8530] kernfs_path_from_node+0x3a/0x60 [ 78.666014][ T8530] get_mm_memcg_path+0xb2/0xf0 [ 78.670773][ T8530] __mmap_lock_do_trace_start_locking+0x25/0x2d0 [ 78.677098][ T8530] do_user_addr_fault+0x638/0xc50 [ 78.682118][ T8530] ? irqentry_enter+0x43/0x50 [ 78.686812][ T8530] exc_page_fault+0x9e/0x180 [ 78.691403][ T8530] ? asm_exc_page_fault+0x8/0x30 [ 78.696329][ T8530] asm_exc_page_fault+0x1e/0x30 [ 78.701169][ T8530] RIP: 0033:0x7f42776d4798 [ 78.705589][ T8530] Code: Unable to access opcode bytes at RIP 0x7f42776d476e. [ 78.712944][ T8530] RSP: 002b:00007fff34baaf68 EFLAGS: 00010202 [ 78.719004][ T8530] RAX: 00007f42776d4798 RBX: 00007f4278d7d9e0 RCX: 0000000000000000 [ 78.726964][ T8530] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 00007f4277918088 [ 78.734927][ T8530] RBP: 00007fff34bab070 R08: 0000000000000000 R09: 00007f4278723808 [ 78.742889][ T8530] R10: 00007f4277912000 R11: 0000000000000012 R12: 00007f4277910a50 [ 78.750849][ T8530] R13: 00007fff34baafb0 R14: 00007f4278d86040 R15: 0000000000000000 [ 78.759391][ T8530] Kernel Offset: disabled [ 78.763713][ T8530] Rebooting in 86400 seconds..