[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.57' (ECDSA) to the list of known hosts. 2020/06/27 02:22:50 fuzzer started 2020/06/27 02:22:50 dialing manager at 10.128.0.105:40767 2020/06/27 02:22:52 syscalls: 3105 2020/06/27 02:22:52 code coverage: enabled 2020/06/27 02:22:52 comparison tracing: enabled 2020/06/27 02:22:52 extra coverage: enabled 2020/06/27 02:22:52 setuid sandbox: enabled 2020/06/27 02:22:52 namespace sandbox: enabled 2020/06/27 02:22:52 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/27 02:22:52 fault injection: enabled 2020/06/27 02:22:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/27 02:22:52 net packet injection: enabled 2020/06/27 02:22:52 net device setup: enabled 2020/06/27 02:22:52 concurrency sanitizer: enabled 2020/06/27 02:22:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/27 02:22:52 USB emulation: enabled 2020/06/27 02:22:53 suppressing KCSAN reports in functions: 'futex_wait_queue_me' 'ext4_mark_iloc_dirty' 'find_get_pages_range_tag' 'ext4_free_inodes_count' 'alloc_pid' '__ext4_new_inode' 'do_signal_stop' 'ext4_free_inode' 'do_epoll_wait' '__delayacct_blkio_end' '__xa_clear_mark' 'blk_mq_dispatch_rq_list' 'generic_file_buffered_read' 'get_cpu_iowait_time_us' 'page_counter_charge' 'io_sq_thread' 'blk_mq_sched_dispatch_requests' 02:23:12 executing program 0: r0 = inotify_init1(0x0) close(r0) creat(&(0x7f00000001c0)='./file0\x00', 0x0) fsetxattr(r0, &(0x7f0000000000)=@known='user.syz\x00', 0x0, 0x0, 0x0) fremovexattr(r0, &(0x7f0000000040)=@known='user.syz\x00') syzkaller login: [ 52.632892][ T8657] IPVS: ftp: loaded support on port[0] = 21 [ 52.691067][ T8657] chnl_net:caif_netlink_parms(): no params data found 02:23:12 executing program 1: r0 = bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x8, 0xe, &(0x7f0000000c40)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup3(r2, r1, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f00000000c0)={r0, 0x18000000000002a0, 0xe, 0x0, &(0x7f0000000040)="b901036000000601001fffffe100", 0x0, 0x4, 0x6000000000000000, 0x0, 0x1, 0x0, &(0x7f0000000100)="ac"}, 0x3b) [ 52.740817][ T8657] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.747889][ T8657] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.755984][ T8657] device bridge_slave_0 entered promiscuous mode [ 52.763928][ T8657] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.771413][ T8657] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.780286][ T8657] device bridge_slave_1 entered promiscuous mode [ 52.809779][ T8657] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.830788][ T8657] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.848802][ T8657] team0: Port device team_slave_0 added [ 52.856002][ T8657] team0: Port device team_slave_1 added [ 52.869854][ T8657] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.876896][ T8657] 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. [ 52.928754][ T8657] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.944413][ T8811] IPVS: ftp: loaded support on port[0] = 21 [ 52.951632][ T8657] batman_adv: batadv0: Adding interface: batadv_slave_1 02:23:12 executing program 2: perf_event_open(&(0x7f0000000040)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) add_key(&(0x7f0000000100)='rxrpc\x00', &(0x7f0000000000)={'syz', 0x2}, &(0x7f0000000040), 0x12, 0xffffffffffffffff) [ 52.962284][ T8657] 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. [ 52.989142][ T8657] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.051841][ T8657] device hsr_slave_0 entered promiscuous mode [ 53.109073][ T8657] device hsr_slave_1 entered promiscuous mode [ 53.175156][ T8843] IPVS: ftp: loaded support on port[0] = 21 02:23:13 executing program 3: set_mempolicy(0x3, &(0x7f0000000140)=0x6, 0xa) r0 = add_key$keyring(&(0x7f0000000080)='keyring\x00', &(0x7f0000000180)={'syz', 0x2}, 0x0, 0x0, 0xfffffffffffffffd) r1 = add_key$user(&(0x7f0000000000)='user\x00', &(0x7f00000000c0)={'syz', 0x0}, &(0x7f0000000280)='U', 0x1, r0) keyctl$KEYCTL_RESTRICT_KEYRING(0x1d, r0, &(0x7f0000000480)='asymmetric\x00', &(0x7f0000000100)=@keyring={'key_or_keyring:', r1}) [ 53.234004][ T8811] chnl_net:caif_netlink_parms(): no params data found [ 53.359588][ T8811] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.366636][ T8811] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.389408][ T8811] device bridge_slave_0 entered promiscuous mode [ 53.403077][ T8657] netdevsim netdevsim0 netdevsim0: renamed from eth0 02:23:13 executing program 4: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = dup2(r0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) init_module(&(0x7f0000000000)='\b\x05rist\xe3busgrVid\xa0Le\xbf\x00 $\x8f\xde\xc4\x9eQa\xeaa\x9e^\xb5\x9b\xdd\x00_\xbc~M\xfe\\\x83T\x15K\xfa\xfb@!\x80\x9f\xae\x85=\xdd\x1a\xd2\xdf\x8f\xe3\f\x83J\xe8\x89\x94\xa3?\xc8\xcdW\xa5\fQsx\xc7\xf1\xcc)CH\xcbE\xda\x95\x81f\x9f\xa561r\xd7\xf0\xd4\x1f\x83\xc0A\x80\xab\xe2\xf4\xcd\x99\x031\xa0\xb0-\xa4\x01\x93f\x00^+\x16\x96\xd7\t\xac\x05^\'\x89}\x06X\x15w\x86\r\x17\xca6E\\N\xd4\x7f\xd8\xe0\xf7\xa8\x84\x14\xd0\xaaP\xe3\x96\xc4W\xd96\'\n\x83\x9c}\x1f\v\x98\xe9\xc6\x96\xb34P\xc0\x92\xfdhf\xb6\x96\xd4\x15\xc4<4\xa9\xcab\xac\xfc\xf1Q\xc1h`4\x8b]\xa1|\xe5\xc2K\x84y\xc5\xd7?\xe8E\xf6\x90\x81\xdc\xf5\xd0\x8b\x83\x11\xa0', 0xdb, 0x0) [ 53.450629][ T8657] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.501262][ T8811] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.508306][ T8811] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.529027][ T8811] device bridge_slave_1 entered promiscuous mode [ 53.544493][ T9091] IPVS: ftp: loaded support on port[0] = 21 [ 53.552400][ T8843] chnl_net:caif_netlink_parms(): no params data found [ 53.570659][ T8657] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.620442][ T8657] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.674901][ T8811] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.696082][ T9099] IPVS: ftp: loaded support on port[0] = 21 [ 53.700738][ T8657] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.709023][ T8657] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.716293][ T8657] bridge0: port 1(bridge_slave_0) entered blocking state 02:23:13 executing program 5: r0 = getpgid(0x0) r1 = perf_event_open(&(0x7f0000000700)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, r0, 0x0, 0xffffffffffffffff, 0x0) r2 = socket$netlink(0x10, 0x3, 0x0) r3 = open(&(0x7f0000000040)='./bus\x00', 0x1fe, 0x0) write$binfmt_aout(r3, &(0x7f0000000600)=ANY=[], 0x18) sendfile(r3, r3, &(0x7f00000001c0), 0x8080fffffffe) readv(r2, &(0x7f0000000040)=[{&(0x7f0000000240)=""/205, 0xcd}], 0x1) close(r1) [ 53.723343][ T8657] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.752705][ T8811] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.783100][ T3934] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.791436][ T3934] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.818357][ T8811] team0: Port device team_slave_0 added [ 53.855418][ T8811] team0: Port device team_slave_1 added [ 53.871079][ T8811] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.873090][ T9164] IPVS: ftp: loaded support on port[0] = 21 [ 53.878025][ T8811] 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. [ 53.910822][ T8811] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.935329][ T8811] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.942479][ T8811] 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. [ 53.969230][ T8811] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.983851][ T9099] chnl_net:caif_netlink_parms(): no params data found [ 53.992912][ T8843] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.000060][ T8843] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.007435][ T8843] device bridge_slave_0 entered promiscuous mode [ 54.030468][ T9091] chnl_net:caif_netlink_parms(): no params data found [ 54.042150][ T8843] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.049294][ T8843] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.057072][ T8843] device bridge_slave_1 entered promiscuous mode [ 54.130063][ T8811] device hsr_slave_0 entered promiscuous mode [ 54.168681][ T8811] device hsr_slave_1 entered promiscuous mode [ 54.198464][ T8811] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 54.206135][ T8811] Cannot create hsr debugfs directory [ 54.221613][ T8843] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.244032][ T8843] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.269025][ T8381] ================================================================== [ 54.277133][ T8381] BUG: KCSAN: data-race in copy_process / copy_process [ 54.283961][ T8381] [ 54.286278][ T8381] write to 0xffffffff89281410 of 4 bytes by task 21 on cpu 0: [ 54.293814][ T8381] copy_process+0x2e53/0x32b0 [ 54.298486][ T8381] _do_fork+0xf1/0x660 [ 54.302549][ T8381] kernel_thread+0x85/0xb0 [ 54.306953][ T8381] call_usermodehelper_exec_work+0x4f/0x1b0 [ 54.312834][ T8381] process_one_work+0x3cb/0x990 [ 54.317756][ T8381] worker_thread+0x665/0xbe0 [ 54.322338][ T8381] kthread+0x210/0x220 [ 54.326423][ T8381] ret_from_fork+0x1f/0x30 [ 54.330820][ T8381] [ 54.333140][ T8381] read to 0xffffffff89281410 of 4 bytes by task 8381 on cpu 1: [ 54.340669][ T8381] copy_process+0xab5/0x32b0 [ 54.341336][ T9164] chnl_net:caif_netlink_parms(): no params data found [ 54.345248][ T8381] _do_fork+0xf1/0x660 [ 54.356171][ T8381] kernel_thread+0x85/0xb0 [ 54.360577][ T8381] call_usermodehelper_exec_work+0x4f/0x1b0 [ 54.360856][ T8843] team0: Port device team_slave_0 added [ 54.366460][ T8381] process_one_work+0x3cb/0x990 [ 54.376824][ T8381] worker_thread+0x665/0xbe0 [ 54.381478][ T8381] kthread+0x210/0x220 [ 54.385523][ T8381] ret_from_fork+0x1f/0x30 [ 54.389927][ T8381] [ 54.392245][ T8381] Reported by Kernel Concurrency Sanitizer on: [ 54.398377][ T8381] CPU: 1 PID: 8381 Comm: kworker/u4:5 Not tainted 5.8.0-rc2-syzkaller #0 [ 54.406758][ T8381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.416821][ T8381] Workqueue: events_unbound call_usermodehelper_exec_work [ 54.423909][ T8381] ================================================================== [ 54.431942][ T8381] Kernel panic - not syncing: panic_on_warn set ... [ 54.438519][ T8381] CPU: 1 PID: 8381 Comm: kworker/u4:5 Not tainted 5.8.0-rc2-syzkaller #0 [ 54.446900][ T8381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.456938][ T8381] Workqueue: events_unbound call_usermodehelper_exec_work [ 54.464018][ T8381] Call Trace: [ 54.467374][ T8381] dump_stack+0x10f/0x19d [ 54.471679][ T8381] panic+0x1f8/0x63a [ 54.475563][ T8381] ? vprintk_emit+0x44a/0x4f0 [ 54.480231][ T8381] kcsan_report+0x684/0x690 [ 54.484722][ T8381] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 54.490248][ T8381] ? copy_process+0xab5/0x32b0 [ 54.494987][ T8381] ? _do_fork+0xf1/0x660 [ 54.499200][ T8381] ? kernel_thread+0x85/0xb0 [ 54.503766][ T8381] ? call_usermodehelper_exec_work+0x4f/0x1b0 [ 54.509995][ T8381] ? process_one_work+0x3cb/0x990 [ 54.515124][ T8381] ? worker_thread+0x665/0xbe0 [ 54.519877][ T8381] ? kthread+0x210/0x220 [ 54.524096][ T8381] ? ret_from_fork+0x1f/0x30 [ 54.528672][ T8381] ? debug_smp_processor_id+0x18/0x20 [ 54.534017][ T8381] ? sysvec_hyperv_callback+0x90/0x140 [ 54.539450][ T8381] ? copy_creds+0x280/0x350 [ 54.544013][ T8381] ? copy_creds+0x280/0x350 [ 54.548501][ T8381] kcsan_setup_watchpoint+0x453/0x4d0 [ 54.554800][ T8381] ? copy_creds+0x280/0x350 [ 54.559276][ T8381] copy_process+0xab5/0x32b0 [ 54.563846][ T8381] ? check_preempt_wakeup+0x1cb/0x370 [ 54.569194][ T8381] ? proc_cap_handler+0x280/0x280 [ 54.574624][ T8381] _do_fork+0xf1/0x660 [ 54.578688][ T8381] ? enqueue_entity+0x25a/0x480 [ 54.583516][ T8381] ? proc_cap_handler+0x280/0x280 [ 54.588516][ T8381] kernel_thread+0x85/0xb0 [ 54.592915][ T8381] ? proc_cap_handler+0x280/0x280 [ 54.597917][ T8381] call_usermodehelper_exec_work+0x4f/0x1b0 [ 54.603782][ T8381] process_one_work+0x3cb/0x990 [ 54.608717][ T8381] worker_thread+0x665/0xbe0 [ 54.613309][ T8381] ? finish_task_switch+0x8b/0x270 [ 54.618398][ T8381] ? process_one_work+0x990/0x990 [ 54.623934][ T8381] kthread+0x210/0x220 [ 54.627992][ T8381] ? process_one_work+0x990/0x990 [ 54.633002][ T8381] ? constant_test_bit+0x30/0x30 [ 54.637966][ T8381] ret_from_fork+0x1f/0x30 [ 54.643938][ T8381] Kernel Offset: disabled [ 54.648272][ T8381] Rebooting in 86400 seconds..