Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts.
2020/03/11 18:05:47 fuzzer started
2020/03/11 18:05:49 dialing manager at 10.128.0.105:45627
2020/03/11 18:05:49 syscalls: 2955
2020/03/11 18:05:49 code coverage: enabled
2020/03/11 18:05:49 comparison tracing: enabled
2020/03/11 18:05:49 extra coverage: enabled
2020/03/11 18:05:49 setuid sandbox: enabled
2020/03/11 18:05:49 namespace sandbox: enabled
2020/03/11 18:05:49 Android sandbox: /sys/fs/selinux/policy does not exist
2020/03/11 18:05:49 fault injection: enabled
2020/03/11 18:05:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/03/11 18:05:49 net packet injection: enabled
2020/03/11 18:05:49 net device setup: enabled
2020/03/11 18:05:49 concurrency sanitizer: enabled
2020/03/11 18:05:49 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 56.449168][ T7875] KCSAN: could not find function: '_find_next_bit'
[ 57.266218][ T7875] KCSAN: could not find function: 'poll_schedule_timeout'
2020/03/11 18:05:53 adding functions to KCSAN blacklist: 'ext4_has_free_clusters' '_find_next_bit' '__mark_inode_dirty' 'ext4_da_write_end' 'ext4_ext_handle_unwritten_extents' 'shmem_file_read_iter' 'ktime_get_seconds' 'tick_nohz_idle_stop_tick' 'poll_schedule_timeout' '__get_user_pages' '__filemap_fdatawrite_range' 'run_timer_softirq' 'ktime_get_real_seconds' 'tick_sched_do_timer' 'ep_poll' 'find_get_pages_range_tag' 'tick_nohz_next_event' 'lruvec_lru_size' 'list_lru_count_one' 'add_timer' 'audit_log_start' 'shmem_getpage_gfp' 'echo_char' 'pcpu_alloc' 'ext4_nonda_switch' 'blk_mq_sched_dispatch_requests' 'mod_timer' '__ext4_new_inode' 'generic_write_end' 'alloc_pid' 'xas_clear_mark' 'ext4_free_inodes_count' 'do_syslog' 'blk_mq_dispatch_rq_list' 'do_nanosleep' 'copy_process' 'get_cpu_iowait_time_us' 'futex_wait_queue_me' 'kauditd_thread' 'generic_fillattr'
[ 156.476724][ C1] ==================================================================
[ 156.484896][ C1] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0
[ 156.493347][ C1]
[ 156.495658][ C1] write to 0xffff88812c01dbe4 of 1 bytes by task 0 on cpu 0:
[ 156.503000][ C1] timer_clear_idle+0x3d/0x50
[ 156.507667][ C1] __tick_nohz_idle_restart_tick+0x32/0x1a0
[ 156.513575][ C1] tick_nohz_idle_exit+0x19c/0x1d0
[ 156.518676][ C1] do_idle+0xac/0x290
[ 156.522645][ C1] cpu_startup_entry+0x14/0x20
[ 156.527390][ C1] rest_init+0xe4/0xeb
[ 156.531460][ C1] arch_call_rest_init+0x13/0x2b
[ 156.536401][ C1] start_kernel+0xcc2/0xceb
[ 156.540892][ C1] secondary_startup_64+0xa4/0xb0
[ 156.545903][ C1]
[ 156.548234][ C1] read to 0xffff88812c01dbe4 of 1 bytes by interrupt on cpu 1:
[ 156.555770][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0
[ 156.561292][ C1] mod_timer+0x3d7/0x830
[ 156.565513][ C1] sk_reset_timer+0x29/0xc0
[ 156.569997][ C1] tcp_send_delayed_ack+0x1fd/0x280
[ 156.575170][ C1] __tcp_ack_snd_check+0x3bb/0x550
[ 156.580256][ C1] tcp_rcv_established+0x72b/0xee0
[ 156.585365][ C1] tcp_v4_do_rcv+0x396/0x4f0
[ 156.589972][ C1] tcp_v4_rcv+0x1bbf/0x1d80
[ 156.594477][ C1] ip_protocol_deliver_rcu+0x4b/0x410
[ 156.599867][ C1] ip_local_deliver_finish+0xf3/0x120
[ 156.605221][ C1] ip_local_deliver+0x135/0x220
[ 156.610054][ C1] ip_sublist_rcv_finish+0xf0/0x140
[ 156.615231][ C1] ip_sublist_rcv+0x3f8/0x530
[ 156.619908][ C1] ip_list_rcv+0x2f3/0x321
[ 156.624303][ C1] __netif_receive_skb_list_core+0x368/0x5c0
[ 156.630428][ C1] netif_receive_skb_list_internal+0x5c7/0x810
[ 156.636576][ C1] gro_normal_list.part.0+0x37/0xa0
[ 156.641764][ C1] gro_normal_one+0x14c/0x160
[ 156.646426][ C1] napi_gro_receive+0x27d/0x2f0
[ 156.651303][ C1] receive_buf+0x24e/0x2e20
[ 156.655784][ C1] virtnet_poll+0x343/0x790
[ 156.660271][ C1] net_rx_action+0x3ad/0xac0
[ 156.664838][ C1] __do_softirq+0x118/0x34a
[ 156.669338][ C1] irq_exit+0xb5/0xd0
[ 156.673299][ C1] do_IRQ+0x7b/0x120
[ 156.677183][ C1] ret_from_intr+0x0/0x21
[ 156.681496][ C1] native_safe_halt+0xe/0x10
[ 156.686063][ C1] default_idle+0x21/0x170
[ 156.690544][ C1] do_idle+0x1b7/0x290
[ 156.694595][ C1] cpu_startup_entry+0x14/0x20
[ 156.699360][ C1] start_secondary+0x164/0x1b0
[ 156.704145][ C1] secondary_startup_64+0xa4/0xb0
[ 156.709152][ C1]
[ 156.711487][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 156.717625][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 156.725505][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 156.735566][ C1] ==================================================================
[ 156.743616][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 156.750196][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 156.758081][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 156.768116][ C1] Call Trace:
[ 156.771382][ C1]
[ 156.774226][ C1] dump_stack+0x11d/0x187
[ 156.778546][ C1] panic+0x210/0x640
[ 156.782426][ C1] ? vprintk_func+0x89/0x13a
[ 156.787007][ C1] kcsan_report.cold+0xc/0x14
[ 156.791671][ C1] kcsan_setup_watchpoint+0x3e3/0x420
[ 156.798421][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0
[ 156.803948][ C1] mod_timer+0x3d7/0x830
[ 156.808182][ C1] sk_reset_timer+0x29/0xc0
[ 156.812669][ C1] tcp_send_delayed_ack+0x1fd/0x280
[ 156.817856][ C1] __tcp_ack_snd_check+0x3bb/0x550
[ 156.822947][ C1] ? constant_test_bit+0xd/0x30
[ 156.827783][ C1] tcp_rcv_established+0x72b/0xee0
[ 156.832883][ C1] tcp_v4_do_rcv+0x396/0x4f0
[ 156.837463][ C1] tcp_v4_rcv+0x1bbf/0x1d80
[ 156.841974][ C1] ip_protocol_deliver_rcu+0x4b/0x410
[ 156.847343][ C1] ip_local_deliver_finish+0xf3/0x120
[ 156.852707][ C1] ip_local_deliver+0x135/0x220
[ 156.857558][ C1] ? ip_protocol_deliver_rcu+0x410/0x410
[ 156.863190][ C1] ip_sublist_rcv_finish+0xf0/0x140
[ 156.868377][ C1] ip_sublist_rcv+0x3f8/0x530
[ 156.873129][ C1] ? ip_sublist_rcv+0x530/0x530
[ 156.877971][ C1] ip_list_rcv+0x2f3/0x321
[ 156.882374][ C1] ? ip_rcv+0x1b0/0x1b0
[ 156.886781][ C1] __netif_receive_skb_list_core+0x368/0x5c0
[ 156.892762][ C1] ? ktime_get_with_offset+0x1e6/0x230
[ 156.898210][ C1] netif_receive_skb_list_internal+0x5c7/0x810
[ 156.904365][ C1] gro_normal_list.part.0+0x37/0xa0
[ 156.909544][ C1] ? __write_once_size+0x7c/0x100
[ 156.914554][ C1] gro_normal_one+0x14c/0x160
[ 156.919226][ C1] napi_gro_receive+0x27d/0x2f0
[ 156.924062][ C1] receive_buf+0x24e/0x2e20
[ 156.928562][ C1] ? virtqueue_get_buf_ctx+0x4db/0x5c0
[ 156.934007][ C1] virtnet_poll+0x343/0x790
[ 156.938509][ C1] net_rx_action+0x3ad/0xac0
[ 156.943091][ C1] __do_softirq+0x118/0x34a
[ 156.947583][ C1] irq_exit+0xb5/0xd0
[ 156.951547][ C1] do_IRQ+0x7b/0x120
[ 156.955419][ C1] common_interrupt+0xf/0xf
[ 156.959909][ C1]
[ 156.962827][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 156.968193][ C1] Code: ff cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d fc 08 44 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec 08 44 00 fb f4 cc 41 54 55 53 e8 37 ff 9a fc e8 92 b0 b3 fd 0f 1f 44 00 00 48
[ 156.987800][ C1] RSP: 0018:ffffc90000cd3eb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffde
[ 156.996199][ C1] RAX: 0000000000000001 RBX: ffff88812b786040 RCX: ffffffff825221d1
[ 157.004231][ C1] RDX: 0000000000000000 RSI: ffffffff825221da RDI: 0000000000000005
[ 157.012195][ C1] RBP: 0000000000000001 R08: ffff88812b786040 R09: 0000ffff8584b168
[ 157.020162][ C1] R10: 0000c90000cd3e98 R11: 0000ffff8584b16f R12: ffff88812b786040
[ 157.028124][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88812b786040
[ 157.036098][ C1] ? debug_smp_processor_id+0x31/0x129
[ 157.041538][ C1] ? debug_smp_processor_id+0x3a/0x129
[ 157.046985][ C1] default_idle+0x21/0x170
[ 157.051389][ C1] do_idle+0x1b7/0x290
[ 157.055439][ C1] cpu_startup_entry+0x14/0x20
[ 157.060215][ C1] start_secondary+0x164/0x1b0
[ 157.064964][ C1] secondary_startup_64+0xa4/0xb0
[ 157.071832][ C1] Kernel Offset: disabled
[ 157.076192][ C1] Rebooting in 86400 seconds..