Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. 2020/06/15 01:02:10 fuzzer started 2020/06/15 01:02:11 dialing manager at 10.128.0.105:36539 2020/06/15 01:02:11 syscalls: 3085 2020/06/15 01:02:11 code coverage: enabled 2020/06/15 01:02:11 comparison tracing: enabled 2020/06/15 01:02:11 extra coverage: enabled 2020/06/15 01:02:11 setuid sandbox: enabled 2020/06/15 01:02:11 namespace sandbox: enabled 2020/06/15 01:02:11 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/15 01:02:11 fault injection: enabled 2020/06/15 01:02:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/15 01:02:11 net packet injection: enabled 2020/06/15 01:02:11 net device setup: enabled 2020/06/15 01:02:11 concurrency sanitizer: enabled 2020/06/15 01:02:11 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/15 01:02:11 USB emulation: enabled syzkaller login: [ 48.744700][ T8921] KCSAN: could not find function: '_find_next_bit' 2020/06/15 01:02:18 adding functions to KCSAN blacklist: 'ktime_get_real_seconds' 'tick_nohz_idle_stop_tick' 'timer_clear_idle' '__mark_inode_dirty' 'run_timer_softirq' 'xas_clear_mark' 'pcpu_alloc' 'do_exit' 'ext4_mark_iloc_dirty' 'n_tty_receive_buf_common' '__add_to_page_cache_locked' '_find_next_bit' 'queue_access_lock' 'echo_char' 'ptrace_check_attach' 'do_signal_stop' 'atime_needs_update' 'tick_sched_do_timer' 'blk_mq_dispatch_rq_list' '__ext4_new_inode' 'generic_file_read_iter' 'file_update_time' 'decrypt_packet' 'lookup_fast' 'dd_has_work' 'futex_wait_queue_me' 'mod_timer' 'vm_area_dup' 'fsnotify' '__delete_from_page_cache' '__send_signal' 'page_counter_charge' '__filemap_fdatawrite_range' '__snd_rawmidi_transmit_ack' 'blk_mq_sched_dispatch_requests' 'xas_find_marked' 'ext4_writepages' 'copy_process' 'do_nanosleep' 'audit_log_start' 'add_timer' 'kauditd_thread' '__x64_sys_ptrace' 'ext4_free_inodes_count' 'wbt_done' 'generic_fillattr' 'ep_poll' 'blk_mq_get_request' 'snd_seq_check_queue' 'blk_mq_request_bypass_insert' 'kcm_rfree' 'find_get_pages_range_tag' 'ext4_mb_good_group' 'generic_write_end' [ 85.987519][ T8911] ================================================================== [ 85.995662][ T8911] BUG: KCSAN: data-race in ktime_get_seconds / timekeeping_advance [ 86.003538][ T8911] [ 86.005859][ T8911] write to 0xffffffff88ae90c8 of 280 bytes by interrupt on cpu 0: [ 86.013648][ T8911] timekeeping_advance+0x88e/0xd80 [ 86.018791][ T8911] update_wall_time+0x15/0x20 [ 86.023447][ T8911] tick_do_update_jiffies64+0x1e5/0x2a0 [ 86.028971][ T8911] tick_sched_do_timer+0xc7/0xd0 [ 86.033887][ T8911] tick_sched_timer+0x3f/0xd0 [ 86.038549][ T8911] __hrtimer_run_queues+0x271/0x600 [ 86.043722][ T8911] hrtimer_interrupt+0x226/0x490 [ 86.048638][ T8911] smp_apic_timer_interrupt+0xd8/0x270 [ 86.054072][ T8911] apic_timer_interrupt+0xf/0x20 [ 86.058988][ T8911] __local_bh_enable_ip+0x24/0x80 [ 86.063987][ T8911] ipt_do_table+0x8d5/0xe70 [ 86.068466][ T8911] iptable_raw_hook+0x44/0x60 [ 86.073120][ T8911] nf_hook_slow+0x7c/0x160 [ 86.077511][ T8911] nf_hook_slow_list+0x140/0x29f [ 86.082421][ T8911] ip_sublist_rcv+0x4f9/0x530 [ 86.087083][ T8911] ip_list_rcv+0x2f3/0x321 [ 86.091480][ T8911] __netif_receive_skb_list_core+0x368/0x5c0 [ 86.097434][ T8911] netif_receive_skb_list_internal+0x5c7/0x810 [ 86.103560][ T8911] gro_normal_list.part.0+0x37/0xa0 [ 86.108733][ T8911] gro_normal_one+0x14c/0x160 [ 86.113386][ T8911] napi_gro_receive+0x27d/0x2f0 [ 86.118211][ T8911] receive_buf+0x24c/0x3420 [ 86.122688][ T8911] virtnet_poll+0x343/0x790 [ 86.127163][ T8911] net_rx_action+0x3ad/0xac0 [ 86.131728][ T8911] __do_softirq+0x118/0x34a [ 86.136217][ T8911] run_ksoftirqd+0x41/0x60 [ 86.140607][ T8911] smpboot_thread_fn+0x374/0x4a0 [ 86.145516][ T8911] kthread+0x203/0x230 [ 86.149558][ T8911] ret_from_fork+0x1f/0x30 [ 86.153957][ T8911] [ 86.156270][ T8911] read to 0xffffffff88ae9140 of 8 bytes by task 8911 on cpu 1: [ 86.164578][ T8911] ktime_get_seconds+0x42/0x60 [ 86.169325][ T8911] tcp_rcv_established+0xe79/0xee0 [ 86.174413][ T8911] tcp_v4_do_rcv+0x396/0x4f0 [ 86.179009][ T8911] __release_sock+0x130/0x1e0 [ 86.183690][ T8911] release_sock+0x5e/0x160 [ 86.188082][ T8911] tcp_recvmsg+0x68e/0x1ba0 [ 86.192562][ T8911] inet_recvmsg+0xc1/0x250 [ 86.196967][ T8911] sock_recvmsg+0x8e/0xb0 [ 86.201276][ T8911] sock_read_iter+0x185/0x230 [ 86.206451][ T8911] new_sync_read+0x416/0x450 [ 86.211019][ T8911] __vfs_read+0x9e/0xb0 [ 86.215166][ T8911] vfs_read+0x13e/0x2b0 [ 86.219297][ T8911] ksys_read+0x16a/0x1a0 [ 86.223534][ T8911] __x64_sys_read+0x49/0x60 [ 86.228015][ T8911] do_syscall_64+0xc7/0x3b0 [ 86.232494][ T8911] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 86.238350][ T8911] [ 86.240647][ T8911] Reported by Kernel Concurrency Sanitizer on: [ 86.246787][ T8911] CPU: 1 PID: 8911 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 86.255006][ T8911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.265034][ T8911] ================================================================== [ 86.273070][ T8911] Kernel panic - not syncing: panic_on_warn set ... [ 86.279631][ T8911] CPU: 1 PID: 8911 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 86.287839][ T8911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.297871][ T8911] Call Trace: [ 86.301140][ T8911] dump_stack+0x11d/0x187 [ 86.305455][ T8911] panic+0x210/0x640 [ 86.309344][ T8911] ? vprintk_func+0x89/0x13a [ 86.313937][ T8911] kcsan_report.cold+0xc/0x1a [ 86.318607][ T8911] kcsan_setup_watchpoint+0x3fb/0x440 [ 86.323956][ T8911] ktime_get_seconds+0x42/0x60 [ 86.328698][ T8911] tcp_rcv_established+0xe79/0xee0 [ 86.333788][ T8911] tcp_v4_do_rcv+0x396/0x4f0 [ 86.338356][ T8911] __release_sock+0x130/0x1e0 [ 86.343008][ T8911] release_sock+0x5e/0x160 [ 86.347405][ T8911] tcp_recvmsg+0x68e/0x1ba0 [ 86.351892][ T8911] inet_recvmsg+0xc1/0x250 [ 86.356297][ T8911] ? apparmor_socket_recvmsg+0x38/0x40 [ 86.361731][ T8911] ? inet_sendpage+0xf0/0xf0 [ 86.366295][ T8911] sock_recvmsg+0x8e/0xb0 [ 86.370618][ T8911] sock_read_iter+0x185/0x230 [ 86.375276][ T8911] new_sync_read+0x416/0x450 [ 86.379848][ T8911] __vfs_read+0x9e/0xb0 [ 86.383982][ T8911] vfs_read+0x13e/0x2b0 [ 86.388112][ T8911] ksys_read+0x16a/0x1a0 [ 86.392345][ T8911] __x64_sys_read+0x49/0x60 [ 86.396826][ T8911] do_syscall_64+0xc7/0x3b0 [ 86.401322][ T8911] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 86.407191][ T8911] RIP: 0033:0x4b3cdb [ 86.411116][ T8911] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 bb a1 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 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 [ 86.430789][ T8911] RSP: 002b:000000c000323890 EFLAGS: 00000206 ORIG_RAX: 0000000000000000 [ 86.439190][ T8911] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb [ 86.447139][ T8911] RDX: 0000000000001000 RSI: 000000c000214000 RDI: 0000000000000006 [ 86.455196][ T8911] RBP: 000000c0003238e0 R08: 00007ffe9b6f4001 R09: 0000000000000056 [ 86.463143][ T8911] R10: 0000000000000072 R11: 0000000000000206 R12: 0000000000000003 [ 86.471101][ T8911] R13: 000000c000098600 R14: 0000000000000004 R15: 0000000000000004 [ 86.480528][ T8911] Kernel Offset: disabled [ 86.484846][ T8911] Rebooting in 86400 seconds..