Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. 2020/04/18 02:50:53 fuzzer started [ 50.806302][ T6741] as (6741) used greatest stack depth: 10456 bytes left [ 51.336330][ T6745] ld (6745) used greatest stack depth: 10440 bytes left 2020/04/18 02:50:55 dialing manager at 10.128.0.105:36643 2020/04/18 02:50:55 syscalls: 2960 2020/04/18 02:50:55 code coverage: enabled 2020/04/18 02:50:55 comparison tracing: enabled 2020/04/18 02:50:55 extra coverage: enabled 2020/04/18 02:50:55 setuid sandbox: enabled 2020/04/18 02:50:55 namespace sandbox: enabled 2020/04/18 02:50:55 Android sandbox: /sys/fs/selinux/policy does not exist 2020/04/18 02:50:55 fault injection: enabled 2020/04/18 02:50:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/04/18 02:50:55 net packet injection: enabled 2020/04/18 02:50:55 net device setup: enabled 2020/04/18 02:50:55 concurrency sanitizer: enabled 2020/04/18 02:50:55 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/04/18 02:50:55 USB emulation: /dev/raw-gadget does not exist [ 53.432085][ T6750] KCSAN: could not find function: '_find_next_bit' 2020/04/18 02:50:58 adding functions to KCSAN blacklist: 'vm_area_dup' 'echo_char' 'page_counter_charge' 'copy_process' 'shmem_add_to_page_cache' 'ext4_mark_iloc_dirty' 'blk_mq_sched_dispatch_requests' '__ext4_new_inode' 'do_nanosleep' '__delete_from_page_cache' 'dd_has_work' '_find_next_bit' 'io_sq_thread' 'run_timer_softirq' 'kauditd_thread' 'dec_zone_page_state' 'xas_clear_mark' 'ep_poll' 'do_exit' 'tick_nohz_next_event' 'tick_sched_do_timer' 'ext4_free_inodes_count' 'tick_nohz_idle_stop_tick' 'n_tty_receive_buf_common' 'generic_file_read_iter' 'blk_mq_get_request' 'mod_timer' 'pipe_double_lock' '__lru_cache_add' 'find_get_pages_range_tag' 'generic_write_end' 'add_timer' 'wbt_issue' 'generic_fillattr' 02:54:25 executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) ioctl(r0, 0x1000008912, &(0x7f00000001c0)="080db5055e0bcfe847a071") syz_emit_ethernet(0x76, &(0x7f0000000080)={@local, @multicast, @void, {@ipv4={0x800, @tcp={{0x5, 0x4, 0x0, 0x0, 0x68, 0x0, 0x0, 0x0, 0x6, 0x0, @dev, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x15, 0x0, 0x0, 0x0, 0x0, {[@md5sig={0x13, 0x12, "1dcad0dad4f14fe6deb9cbc83bf2d235"}, @exp_smc={0xfe, 0x6}, @md5sig={0x13, 0x12, "32d07dec2930ee5a44885eb3b528b0e6"}, @timestamp={0x8, 0xa}, @sack={0x5, 0x6, [0x0]}, @mss={0x2, 0x4}]}}}}}}}, 0x0) [ 262.270092][ T6733] ================================================================== [ 262.278254][ T6733] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 262.285704][ T6733] [ 262.288041][ T6733] write to 0xffff8882182e71f0 of 4 bytes by task 6755 on cpu 1: [ 262.295686][ T6733] propagate_one+0x3b3/0x550 [ 262.300296][ T6733] propagate_mnt+0x22e/0x270 [ 262.304890][ T6733] attach_recursive_mnt+0x66d/0x8a0 [ 262.308859][ T6755] IPVS: ftp: loaded support on port[0] = 21 [ 262.310107][ T6733] graft_tree+0x107/0x160 [ 262.320320][ T6733] do_add_mount.isra.0+0x102/0x190 [ 262.325442][ T6733] do_mount+0x12d5/0x1590 [ 262.329775][ T6733] __x64_sys_mount+0x12b/0x1a0 [ 262.334554][ T6733] do_syscall_64+0xc7/0x3b0 [ 262.339069][ T6733] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 262.344953][ T6733] [ 262.347293][ T6733] read to 0xffff8882182e71f0 of 4 bytes by task 6733 on cpu 0: [ 262.354851][ T6733] atime_needs_update+0x13e/0x360 [ 262.359885][ T6733] touch_atime+0x63/0x150 [ 262.364222][ T6733] generic_file_read_iter+0x11b0/0x14e0 [ 262.369785][ T6733] ext4_file_read_iter+0x103/0x360 [ 262.374902][ T6733] new_sync_read+0x306/0x450 [ 262.379631][ T6733] __vfs_read+0x9e/0xb0 [ 262.383805][ T6733] integrity_kernel_read+0x97/0xe0 [ 262.388929][ T6733] ima_calc_file_hash_tfm+0x18f/0x240 [ 262.393845][ T6755] chnl_net:caif_netlink_parms(): no params data found [ 262.394323][ T6733] ima_calc_file_hash+0x147/0xeb0 [ 262.406105][ T6733] ima_collect_measurement+0x385/0x3b0 [ 262.411575][ T6733] process_measurement+0x91a/0x1000 [ 262.416882][ T6733] ima_file_check+0x7e/0xb0 [ 262.421594][ T6733] path_openat+0x176e/0x23d0 [ 262.426197][ T6733] do_filp_open+0x11e/0x1b0 [ 262.430703][ T6733] do_sys_openat2+0x52e/0x680 [ 262.435389][ T6733] do_sys_open+0xa2/0x110 [ 262.439758][ T6733] __x64_sys_openat+0x5d/0x70 [ 262.444467][ T6733] do_syscall_64+0xc7/0x3b0 [ 262.448985][ T6733] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 262.454890][ T6733] [ 262.457214][ T6733] Reported by Kernel Concurrency Sanitizer on: [ 262.463415][ T6733] CPU: 0 PID: 6733 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 262.463624][ T6755] bridge0: port 1(bridge_slave_0) entered blocking state [ 262.471660][ T6733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 262.471667][ T6733] ================================================================== [ 262.471675][ T6733] Kernel panic - not syncing: panic_on_warn set ... [ 262.471693][ T6733] CPU: 0 PID: 6733 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 262.471701][ T6733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 262.471706][ T6733] Call Trace: [ 262.471736][ T6733] dump_stack+0x11d/0x187 [ 262.481467][ T6755] bridge0: port 1(bridge_slave_0) entered disabled state [ 262.488851][ T6733] panic+0x210/0x640 [ 262.488879][ T6733] ? vprintk_func+0x89/0x13a [ 262.504035][ T6755] device bridge_slave_0 entered promiscuous mode [ 262.511962][ T6733] kcsan_report.cold+0xc/0x1a [ 262.511997][ T6733] kcsan_setup_watchpoint+0x3fb/0x440 [ 262.530535][ T6755] bridge0: port 2(bridge_slave_1) entered blocking state [ 262.536868][ T6733] atime_needs_update+0x13e/0x360 [ 262.541579][ T6755] bridge0: port 2(bridge_slave_1) entered disabled state [ 262.545338][ T6733] touch_atime+0x63/0x150 [ 262.545367][ T6733] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 262.553630][ T6755] device bridge_slave_1 entered promiscuous mode [ 262.556390][ T6733] generic_file_read_iter+0x11b0/0x14e0 [ 262.576380][ T6755] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 262.580981][ T6733] ext4_file_read_iter+0x103/0x360 [ 262.581006][ T6733] new_sync_read+0x306/0x450 [ 262.589081][ T6755] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 262.591232][ T6733] __vfs_read+0x9e/0xb0 [ 262.611565][ T6755] team0: Port device team_slave_0 added [ 262.612393][ T6733] integrity_kernel_read+0x97/0xe0 [ 262.620238][ T6755] team0: Port device team_slave_1 added [ 262.622082][ T6733] ima_calc_file_hash_tfm+0x18f/0x240 [ 262.622162][ T6733] ? string_nocheck+0x97/0x100 [ 262.645159][ T6755] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 262.645973][ T6733] ? widen_string+0x48/0x190 [ 262.646040][ T6733] ? string_nocheck+0xe1/0x100 [ 262.651833][ T6755] 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. [ 262.657053][ T6733] ? format_decode+0x19c/0xaa0 [ 262.657084][ T6733] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 262.664613][ T6755] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 262.668943][ T6733] ? tomoyo_profile+0x3f/0x50 [ 262.668961][ T6733] ? __rcu_read_unlock+0x77/0x390 [ 262.668992][ T6733] ? tomoyo_write_log2+0x64/0x580 [ 262.676919][ T6755] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 262.678359][ T6733] ? setuid_policy_lookup+0xdf/0x110 [ 262.678399][ T6733] ima_calc_file_hash+0x147/0xeb0 [ 262.705526][ T6755] 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. [ 262.709049][ T6733] ? up_read+0x42/0x90 [ 262.709071][ T6733] ? ext4_xattr_get+0x10b/0x600 [ 262.709097][ T6733] ima_collect_measurement+0x385/0x3b0 [ 262.716330][ T6755] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 262.727066][ T6733] process_measurement+0x91a/0x1000 [ 262.727101][ T6733] ? dquot_file_open+0x60/0x80 [ 262.820683][ T6733] ? ext4_file_open+0x109/0x440 [ 262.825552][ T6733] ? __rcu_read_unlock+0x77/0x390 [ 262.830567][ T6733] ? aa_get_task_label+0x1ee/0x370 [ 262.835665][ T6733] ima_file_check+0x7e/0xb0 [ 262.840154][ T6733] path_openat+0x176e/0x23d0 [ 262.844745][ T6733] ? ext4_journal_check_start+0xf8/0x160 [ 262.850375][ T6733] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 262.856255][ T6733] ? constant_test_bit+0xd/0x30 [ 262.861096][ T6733] ? wb_io_lists_populated+0x88/0xa0 [ 262.866370][ T6733] ? _raw_spin_unlock+0x38/0x60 [ 262.871248][ T6733] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 262.877134][ T6733] do_filp_open+0x11e/0x1b0 [ 262.881628][ T6733] ? _find_next_bit.constprop.0+0x126/0x160 [ 262.887550][ T6733] ? __read_once_size+0x2f/0xd0 [ 262.892394][ T6733] ? _raw_spin_unlock+0x38/0x60 [ 262.897243][ T6733] ? __alloc_fd+0x2f3/0x3b0 [ 262.901755][ T6733] do_sys_openat2+0x52e/0x680 [ 262.906422][ T6733] do_sys_open+0xa2/0x110 [ 262.910743][ T6733] __x64_sys_openat+0x5d/0x70 [ 262.915409][ T6733] do_syscall_64+0xc7/0x3b0 [ 262.919903][ T6733] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 262.925783][ T6733] RIP: 0033:0x47c5aa [ 262.929705][ T6733] Code: e8 7b 6b fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48 [ 262.949295][ T6733] RSP: 002b:000000c420271850 EFLAGS: 00000206 ORIG_RAX: 0000000000000101 [ 262.957711][ T6733] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c5aa [ 262.965685][ T6733] RDX: 0000000000080002 RSI: 000000c43b6d2320 RDI: ffffffffffffff9c [ 262.973641][ T6733] RBP: 000000c4202718d0 R08: 0000000000000000 R09: 0000000000000000 [ 262.981598][ T6733] R10: 00000000000001a4 R11: 0000000000000206 R12: ffffffffffffffff [ 262.989567][ T6733] R13: 000000000000001a R14: 0000000000000019 R15: 0000000000000100 [ 262.998624][ T6733] Kernel Offset: disabled [ 263.002947][ T6733] Rebooting in 86400 seconds..