Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts. 2020/05/04 06:42:14 fuzzer started 2020/05/04 06:42:14 dialing manager at 10.128.0.105:43281 2020/05/04 06:42:15 syscalls: 2964 2020/05/04 06:42:15 code coverage: enabled 2020/05/04 06:42:15 comparison tracing: enabled 2020/05/04 06:42:15 extra coverage: enabled 2020/05/04 06:42:15 setuid sandbox: enabled 2020/05/04 06:42:15 namespace sandbox: enabled 2020/05/04 06:42:15 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/04 06:42:15 fault injection: enabled 2020/05/04 06:42:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/04 06:42:15 net packet injection: enabled 2020/05/04 06:42:15 net device setup: enabled 2020/05/04 06:42:15 concurrency sanitizer: enabled 2020/05/04 06:42:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/04 06:42:15 USB emulation: /dev/raw-gadget does not exist syzkaller login: [ 48.006188][ T6739] KCSAN: could not find function: 'calc_wb_limits' [ 50.285022][ T6739] KCSAN: could not find function: '_find_next_bit' [ 51.108398][ T6739] KCSAN: could not find function: 'poll_schedule_timeout' 2020/05/04 06:42:21 adding functions to KCSAN blacklist: 'vti_tunnel_xmit' '__find_get_block' 'yama_ptracer_del' 'io_sq_thread' 'kvm_mmu_notifier_invalidate_range_end' 'wbt_wait' 'tick_nohz_idle_stop_tick' 'generic_update_time' '__filemap_fdatawrite_range' 'vm_area_dup' 'alloc_pid' 'copy_process' 'futex_wait_queue_me' 'blk_mq_request_bypass_insert' '__add_to_page_cache_locked' 'do_exit' 'echo_char' 'copyin' 'do_signal_stop' 'do_syslog' 'page_counter_charge' 'find_alive_thread' 'ext4_writepages' 'calc_wb_limits' '__ext4_new_inode' 'ep_poll' 'tick_sched_do_timer' 'fsnotify_detach_connector_from_object' 'blk_mq_get_request' 'wbt_done' 'wbt_issue' 'find_get_pages_range_tag' 'blk_mq_sched_dispatch_requests' '__snd_rawmidi_transmit_ack' 'generic_fillattr' 'watchdog' 'mod_timer' 'lruvec_lru_size' '__put_unused_fd' 'ktime_get_real_seconds' '__mark_inode_dirty' 'xas_find_marked' 'audit_log_start' '_find_next_bit' 'blk_mq_dispatch_rq_list' 'ext4_mark_iloc_dirty' 'do_wait' 'add_timer' 'pcpu_alloc' 'poll_schedule_timeout' 'ext4_free_inodes_count' '__bpf_lru_node_move_in' '__delete_from_page_cache' 'kauditd_thread' 'run_timer_softirq' 'generic_write_end' 'xas_clear_mark' 'dd_has_work' 'do_nanosleep' 'timer_clear_idle' 'snd_pcm_oss_make_ready_locked' [ 104.001305][ T6730] ================================================================== [ 104.009561][ T6730] BUG: KCSAN: data-race in ktime_get_seconds / timekeeping_advance [ 104.017453][ T6730] [ 104.019796][ T6730] write to 0xffffffff86fce8c8 of 280 bytes by interrupt on cpu 1: [ 104.027803][ T6730] timekeeping_advance+0x88e/0xd80 [ 104.032905][ T6730] update_wall_time+0x15/0x20 [ 104.037565][ T6730] tick_do_update_jiffies64+0x1e5/0x2a0 [ 104.043100][ T6730] tick_sched_do_timer+0xc7/0xd0 [ 104.048015][ T6730] tick_sched_timer+0x3f/0xd0 [ 104.052688][ T6730] __hrtimer_run_queues+0x271/0x600 [ 104.057962][ T6730] hrtimer_interrupt+0x226/0x490 [ 104.062882][ T6730] smp_apic_timer_interrupt+0xd8/0x270 [ 104.068328][ T6730] apic_timer_interrupt+0xf/0x20 [ 104.073238][ T6730] __tsan_read4+0xe4/0x110 [ 104.077630][ T6730] virtqueue_add+0x5ed/0x1ab0 [ 104.082286][ T6730] virtqueue_add_inbuf_ctx+0x4c/0x64 [ 104.087547][ T6730] try_fill_recv+0x69a/0xdb0 [ 104.092120][ T6730] virtnet_poll+0x62d/0x790 [ 104.096774][ T6730] net_rx_action+0x3ad/0xac0 [ 104.101350][ T6730] __do_softirq+0x118/0x34a [ 104.105827][ T6730] run_ksoftirqd+0x41/0x60 [ 104.110233][ T6730] smpboot_thread_fn+0x374/0x4a0 [ 104.115152][ T6730] kthread+0x203/0x230 [ 104.119193][ T6730] ret_from_fork+0x1f/0x30 [ 104.123573][ T6730] [ 104.125881][ T6730] read to 0xffffffff86fce940 of 8 bytes by task 6730 on cpu 0: [ 104.133398][ T6730] ktime_get_seconds+0x42/0x60 [ 104.138238][ T6730] tcp_rcv_established+0xe79/0xee0 [ 104.143333][ T6730] tcp_v4_do_rcv+0x396/0x4f0 [ 104.147907][ T6730] __release_sock+0x130/0x1e0 [ 104.152676][ T6730] release_sock+0x5e/0x160 [ 104.157160][ T6730] tcp_recvmsg+0x68e/0x1ba0 [ 104.161648][ T6730] inet_recvmsg+0xc1/0x250 [ 104.166046][ T6730] sock_recvmsg+0x8e/0xb0 [ 104.170359][ T6730] sock_read_iter+0x185/0x230 [ 104.175008][ T6730] new_sync_read+0x416/0x450 [ 104.179606][ T6730] __vfs_read+0x9e/0xb0 [ 104.183736][ T6730] vfs_read+0x13e/0x2b0 [ 104.187875][ T6730] ksys_read+0x16a/0x1a0 [ 104.192107][ T6730] __x64_sys_read+0x49/0x60 [ 104.196602][ T6730] do_syscall_64+0xc7/0x3b0 [ 104.201092][ T6730] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.206949][ T6730] [ 104.209260][ T6730] Reported by Kernel Concurrency Sanitizer on: [ 104.215401][ T6730] CPU: 0 PID: 6730 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 104.224315][ T6730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.234344][ T6730] ================================================================== [ 104.242396][ T6730] Kernel panic - not syncing: panic_on_warn set ... [ 104.249409][ T6730] CPU: 0 PID: 6730 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 104.257616][ T6730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.267833][ T6730] Call Trace: [ 104.271129][ T6730] dump_stack+0x11d/0x187 [ 104.275448][ T6730] panic+0x210/0x640 [ 104.279329][ T6730] ? vprintk_func+0x89/0x13a [ 104.283909][ T6730] kcsan_report.cold+0xc/0x1a [ 104.288578][ T6730] kcsan_setup_watchpoint+0x3fb/0x440 [ 104.294031][ T6730] ktime_get_seconds+0x42/0x60 [ 104.299440][ T6730] tcp_rcv_established+0xe79/0xee0 [ 104.304553][ T6730] tcp_v4_do_rcv+0x396/0x4f0 [ 104.309126][ T6730] __release_sock+0x130/0x1e0 [ 104.314066][ T6730] release_sock+0x5e/0x160 [ 104.318506][ T6730] tcp_recvmsg+0x68e/0x1ba0 [ 104.322994][ T6730] ? sock_poll+0xfc/0x240 [ 104.327316][ T6730] inet_recvmsg+0xc1/0x250 [ 104.331713][ T6730] ? apparmor_socket_recvmsg+0x38/0x40 [ 104.337148][ T6730] ? inet_sendpage+0xf0/0xf0 [ 104.341718][ T6730] sock_recvmsg+0x8e/0xb0 [ 104.346034][ T6730] sock_read_iter+0x185/0x230 [ 104.351171][ T6730] new_sync_read+0x416/0x450 [ 104.355838][ T6730] __vfs_read+0x9e/0xb0 [ 104.360094][ T6730] vfs_read+0x13e/0x2b0 [ 104.364236][ T6730] ksys_read+0x16a/0x1a0 [ 104.368516][ T6730] __x64_sys_read+0x49/0x60 [ 104.373011][ T6730] do_syscall_64+0xc7/0x3b0 [ 104.377677][ T6730] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.383545][ T6730] RIP: 0033:0x47c530 [ 104.387421][ T6730] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 104.407011][ T6730] RSP: 002b:000000c4202d7810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 104.416190][ T6730] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 104.424315][ T6730] RDX: 0000000000001000 RSI: 000000c420304000 RDI: 0000000000000003 [ 104.432271][ T6730] RBP: 000000c4202d7868 R08: 0000000000000000 R09: 0000000000000000 [ 104.440398][ T6730] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008 [ 104.448344][ T6730] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 104.458949][ T6730] Kernel Offset: disabled [ 104.463274][ T6730] Rebooting in 86400 seconds..