[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 48.390663][ T27] audit: type=1800 audit(1577637212.528:21): pid=7762 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 48.422272][ T27] audit: type=1800 audit(1577637212.528:22): pid=7762 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts.
2019/12/29 16:33:45 fuzzer started
2019/12/29 16:33:47 dialing manager at 10.128.0.105:42075
2019/12/29 16:33:47 syscalls: 2692
2019/12/29 16:33:47 code coverage: enabled
2019/12/29 16:33:47 comparison tracing: enabled
2019/12/29 16:33:47 extra coverage: enabled
2019/12/29 16:33:47 setuid sandbox: enabled
2019/12/29 16:33:47 namespace sandbox: enabled
2019/12/29 16:33:47 Android sandbox: /sys/fs/selinux/policy does not exist
2019/12/29 16:33:47 fault injection: enabled
2019/12/29 16:33:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/12/29 16:33:47 net packet injection: enabled
2019/12/29 16:33:47 net device setup: enabled
2019/12/29 16:33:47 concurrency sanitizer: enabled
2019/12/29 16:33:47 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 71.629657][ T7930] KCSAN: could not find function: 'do_cpu_nanosleep'
[ 73.380081][ T7930] KCSAN: could not find function: 'poll_schedule_timeout'
[ 74.004150][ T7930] KCSAN: could not find function: 'common_perm_rm'
2019/12/29 16:34:07 adding functions to KCSAN blacklist: 'ext4_mb_find_by_goal' 'tick_nohz_idle_stop_tick' 'lruvec_lru_size' 'wbt_wait' 'generic_fillattr' 'install_new_memslots' 'do_signal_stop' 'rcu_gp_fqs_loop' 'integrity_iint_find' 'taskstats_exit' 'ext4_da_write_end' 'fasync_remove_entry' 'ovl_write_iter' '__acct_update_integrals' 'generic_permission' 'fat12_ent_put' 'ext4_mb_good_group' 'run_timer_softirq' 'pcpu_alloc' 'do_exit' 'alloc_pid' 'echo_char' 'do_nanosleep' 'add_timer' 'iomap_dio_bio_actor' '__add_to_page_cache_locked' 'ext4_free_inode' 'lookup_fast' 'filemap_map_pages' 'commit_echoes' 'del_timer' 'has_bh_in_lru' 'mod_timer' 'timer_clear_idle' 'list_lru_count_one' 'd_alloc_parallel' '__find_get_block' 'snd_seq_check_queue' 'complete_signal' 'vti_tunnel_xmit' '__rb_erase_color' 'find_get_pages_range_tag' 'rcu_gp_fqs_check_wake' 'kauditd_thread' 'vfs_fsync_range' 'alloc_empty_file' '__skb_try_recv_from_queue' 'ext4_free_inodes_count' 'n_tty_receive_buf_common' '__filemap_fdatawrite_range' 'shmem_file_read_iter' 'vfs_readlink' 'dd_has_work' 'snd_seq_prioq_cell_out' '__rb_insert_augmented' 'do_cpu_nanosleep' 'ext4_mark_iloc_dirty' 'sit_tunnel_xmit' 'mm_update_next_owner' 'clear_inode' 'yama_ptracer_del' 'blk_mq_free_request' 'poll_schedule_timeout' 'common_perm_rm' '__skb_wait_for_more_packets' 'tomoyo_supervisor' 'generic_write_end' 'do_try_to_free_pages' 'shmem_getpage_gfp' 'wbt_done' 'iput' '__writeback_single_inode' 'tick_do_update_jiffies64' 'xas_find_marked' 'ext4_has_free_clusters' 'blk_mq_dispatch_rq_list' 'audit_log_start' 'unix_release_sock' 'lru_add_drain_all' 'file_remove_privs' 'blk_mq_get_request' 'ktime_get_real_seconds' 'kcm_rfree' 'do_syslog' '__get_user_pages' 'do_mpage_readpage' 'find_next_bit' 'xas_clear_mark' 'detach_if_pending' 'bio_endio' 'file_update_time' 'l2tp_tunnel_del_work' 'kvm_mmu_notifier_invalidate_range_end' 'blk_mq_run_hw_queue' '__d_lookup_done' '__hrtimer_run_queues' 'tick_sched_do_timer' 'blk_stat_add' '__mark_inode_dirty' '__wb_update_bandwidth' 'fprop_fraction_percpu' 'blk_mq_sched_dispatch_requests' 'vm_area_dup' '__rcu_read_unlock' 'do_wait' 'page_counter_try_charge' 'ext4_nonda_switch' 'exit_signals' 'atime_needs_update' 'xprt_connect' 'pid_update_inode' 'copy_process' 'tomoyo_domain_quota_is_ok' 'ext4_alloc_da_blocks' 'ep_poll' '__ext4_new_inode' '__lru_cache_add' 'process_srcu' 'wbt_issue' 'percpu_counter_add_batch' 'page_counter_charge' '__snd_rawmidi_transmit_ack' 'ip6_tnl_start_xmit'
[ 165.392205][ C1] ==================================================================
[ 165.400336][ C1] BUG: KCSAN: data-race in ktime_get_with_offset / timekeeping_advance
[ 165.408543][ C1]
[ 165.410853][ C1] write to 0xffffffff8624d2c8 of 280 bytes by interrupt on cpu 0:
[ 165.418643][ C1] timekeeping_advance+0x88e/0xd80
[ 165.423732][ C1] update_wall_time+0x19/0x20
[ 165.428420][ C1] tick_do_update_jiffies64+0x1a4/0x250
[ 165.433943][ C1] tick_sched_do_timer+0xd4/0xe0
[ 165.438856][ C1] tick_sched_timer+0x43/0xe0
[ 165.443509][ C1] __hrtimer_run_queues+0x274/0x5f0
[ 165.448717][ C1] hrtimer_interrupt+0x22a/0x480
[ 165.453636][ C1] smp_apic_timer_interrupt+0xdc/0x280
[ 165.459125][ C1] apic_timer_interrupt+0xf/0x20
[ 165.464048][ C1] native_safe_halt+0xe/0x10
[ 165.468621][ C1] arch_cpu_idle+0xa/0x10
[ 165.472932][ C1] default_idle_call+0x1e/0x40
[ 165.477718][ C1] do_idle+0x1c2/0x290
[ 165.481769][ C1] cpu_startup_entry+0x1b/0x20
[ 165.486510][ C1] rest_init+0xec/0xf6
[ 165.490561][ C1] arch_call_rest_init+0x17/0x37
[ 165.495479][ C1] start_kernel+0x838/0x85e
[ 165.499972][ C1] x86_64_start_reservations+0x29/0x2b
[ 165.505427][ C1] x86_64_start_kernel+0x72/0x76
[ 165.510346][ C1] secondary_startup_64+0xa4/0xb0
[ 165.515346][ C1]
[ 165.517663][ C1] read to 0xffffffff8624d2e8 of 8 bytes by interrupt on cpu 1:
[ 165.525192][ C1] ktime_get_with_offset+0x136/0x230
[ 165.530466][ C1] netif_receive_skb_list_internal+0x551/0x830
[ 165.536609][ C1] gro_normal_list.part.0+0x3a/0xb0
[ 165.541787][ C1] gro_normal_one+0x162/0x170
[ 165.546444][ C1] napi_gro_receive+0x288/0x300
[ 165.551277][ C1] receive_buf+0x284/0x30b0
[ 165.555761][ C1] virtnet_poll+0x436/0x7d0
[ 165.560284][ C1] net_rx_action+0x3ae/0xa90
[ 165.564854][ C1] __do_softirq+0x115/0x33f
[ 165.569374][ C1] irq_exit+0xbb/0xe0
[ 165.573336][ C1] do_IRQ+0x81/0x130
[ 165.577209][ C1] ret_from_intr+0x0/0x21
[ 165.581515][ C1] native_safe_halt+0xe/0x10
[ 165.586083][ C1] arch_cpu_idle+0xa/0x10
[ 165.590394][ C1] default_idle_call+0x1e/0x40
[ 165.595180][ C1] do_idle+0x1c2/0x290
[ 165.599225][ C1] cpu_startup_entry+0x1b/0x20
[ 165.603978][ C1] start_secondary+0x168/0x1b0
[ 165.608738][ C1] secondary_startup_64+0xa4/0xb0
[ 165.613760][ C1]
[ 165.616066][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 165.622197][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 165.630064][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 165.640101][ C1] ==================================================================
[ 165.649364][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 165.655945][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 165.663817][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 165.673851][ C1] Call Trace:
[ 165.677164][ C1]
[ 165.680003][ C1] dump_stack+0x11d/0x181
[ 165.684316][ C1] panic+0x210/0x640
[ 165.688192][ C1] ? vprintk_func+0x8d/0x140
[ 165.692766][ C1] kcsan_report.cold+0xc/0xd
[ 165.697368][ C1] kcsan_setup_watchpoint+0x3fe/0x460
[ 165.702717][ C1] __tsan_read8+0xc6/0x100
[ 165.707112][ C1] ktime_get_with_offset+0x136/0x230
[ 165.712384][ C1] netif_receive_skb_list_internal+0x551/0x830
[ 165.718518][ C1] ? __rcu_read_unlock+0x66/0x3d0
[ 165.723533][ C1] gro_normal_list.part.0+0x3a/0xb0
[ 165.728706][ C1] ? __write_once_size+0x91/0x110
[ 165.733711][ C1] gro_normal_one+0x162/0x170
[ 165.738388][ C1] napi_gro_receive+0x288/0x300
[ 165.743224][ C1] receive_buf+0x284/0x30b0
[ 165.747715][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 165.753939][ C1] ? virtqueue_napi_schedule+0x3e/0x60
[ 165.759383][ C1] ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[ 165.764817][ C1] ? virtqueue_get_buf+0x31/0x40
[ 165.769736][ C1] virtnet_poll+0x436/0x7d0
[ 165.774236][ C1] ? rcu_dynticks_curr_cpu_in_eqs+0x70/0xa0
[ 165.780117][ C1] net_rx_action+0x3ae/0xa90
[ 165.784730][ C1] __do_softirq+0x115/0x33f
[ 165.789218][ C1] irq_exit+0xbb/0xe0
[ 165.793315][ C1] do_IRQ+0x81/0x130
[ 165.797191][ C1] common_interrupt+0xf/0xf
[ 165.801667][ C1]
[ 165.804632][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 165.809987][ C1] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c b6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c b6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 22 2b 91 fc e8 3d ae ab fd 0f
[ 165.829568][ C1] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffde
[ 165.837966][ C1] RAX: 0000000000000001 RBX: ffff88812b785040 RCX: ffffffff82546f95
[ 165.845917][ C1] RDX: 0000000000000000 RSI: ffffffff82546f9e RDI: 0000000000000005
[ 165.853868][ C1] RBP: ffffc90000cd3e90 R08: ffff88812b785040 R09: 0000ffff85a2f168
[ 165.861816][ C1] R10: 0000c90000cd3e80 R11: 0000ffff85a2f16f R12: 0000000000000001
[ 165.869765][ C1] R13: ffff88812b785040 R14: 0000000000000000 R15: 0000000000000000
[ 165.877726][ C1] ? debug_smp_processor_id+0x35/0x137
[ 165.883164][ C1] ? debug_smp_processor_id+0x3e/0x137
[ 165.888614][ C1] ? default_idle+0x26/0x180
[ 165.893276][ C1] arch_cpu_idle+0xa/0x10
[ 165.897615][ C1] default_idle_call+0x1e/0x40
[ 165.902370][ C1] do_idle+0x1c2/0x290
[ 165.906432][ C1] ? debug_smp_processor_id+0x3e/0x137
[ 165.911870][ C1] cpu_startup_entry+0x1b/0x20
[ 165.916620][ C1] start_secondary+0x168/0x1b0
[ 165.921368][ C1] secondary_startup_64+0xa4/0xb0
[ 165.927719][ C1] Kernel Offset: disabled
[ 165.932058][ C1] Rebooting in 86400 seconds..