[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts.
2020/06/10 04:01:31 fuzzer started
2020/06/10 04:01:32 dialing manager at 10.128.0.105:35015
2020/06/10 04:01:32 syscalls: 3072
2020/06/10 04:01:32 code coverage: enabled
2020/06/10 04:01:32 comparison tracing: enabled
2020/06/10 04:01:32 extra coverage: enabled
2020/06/10 04:01:32 setuid sandbox: enabled
2020/06/10 04:01:32 namespace sandbox: enabled
2020/06/10 04:01:32 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/10 04:01:32 fault injection: enabled
2020/06/10 04:01:32 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/10 04:01:32 net packet injection: enabled
2020/06/10 04:01:32 net device setup: enabled
2020/06/10 04:01:32 concurrency sanitizer: enabled
2020/06/10 04:01:32 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/10 04:01:32 USB emulation: enabled
syzkaller login: [   52.784599][ T8912] KCSAN: could not find function: '_find_next_bit'
2020/06/10 04:01:35 adding functions to KCSAN blacklist: 'blk_mq_dispatch_rq_list' 'copy_process' 'mod_timer' 'echo_char' 'ktime_get_real_seconds' 'ep_poll' 'tick_nohz_idle_stop_tick' '__mark_inode_dirty' 'ext4_free_inodes_count' 'find_get_pages_range_tag' 'generic_fillattr' 'ext4_mark_iloc_dirty' 'iput' 'complete_signal' 'ext4_writepages' '__send_signal' 'pcpu_alloc' '__ext4_new_inode' 'blk_mq_get_request' 'file_update_time' 'lookup_fast' 'add_timer' 'xas_find_marked' '_find_next_bit' 'run_timer_softirq' 'futex_wait_queue_me' 'generic_write_end' '__snd_rawmidi_transmit_ack' 'do_nanosleep' 'xas_clear_mark' 'page_counter_charge' 'do_signal_stop' 
[  210.724966][    T0] ==================================================================
[  210.733437][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[  210.742556][    T0] 
[  210.745002][    T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0:
[  210.752640][    T0]  tick_sched_do_timer+0xb4/0xd0
[  210.757591][    T0]  tick_sched_timer+0x3f/0xd0
[  210.762294][    T0]  __hrtimer_run_queues+0x271/0x600
[  210.767777][    T0]  hrtimer_interrupt+0x226/0x490
[  210.772875][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[  210.778437][    T0]  apic_timer_interrupt+0xf/0x20
[  210.783353][    T0] 
[  210.785686][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[  210.792964][    T0]  tick_nohz_next_event+0x181/0x340
[  210.798160][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  210.804755][    T0]  do_idle+0x1ad/0x290
[  210.808961][    T0]  cpu_startup_entry+0x14/0x20
[  210.813718][    T0]  start_secondary+0x169/0x1b0
[  210.818480][    T0]  secondary_startup_64+0xa4/0xb0
[  210.823477][    T0] 
[  210.825787][    T0] Reported by Kernel Concurrency Sanitizer on:
[  210.832004][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  210.839863][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  210.849902][    T0] ==================================================================
[  210.857948][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  210.864510][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  210.872552][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  210.882685][    T0] Call Trace:
[  210.885969][    T0]  dump_stack+0x11d/0x187
[  210.890288][    T0]  panic+0x210/0x640
[  210.894169][    T0]  ? vprintk_func+0x89/0x13a
[  210.898829][    T0]  kcsan_report.cold+0xc/0x1a
[  210.903929][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  210.909290][    T0]  tick_nohz_next_event+0x181/0x340
[  210.914640][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  210.920183][    T0]  ? ktime_get+0x1c9/0x210
[  210.925647][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  210.931106][    T0]  do_idle+0x1ad/0x290
[  210.935174][    T0]  ? debug_smp_processor_id+0x3a/0x129
[  210.940666][    T0]  cpu_startup_entry+0x14/0x20
[  210.945444][    T0]  start_secondary+0x169/0x1b0
[  210.950211][    T0]  secondary_startup_64+0xa4/0xb0
[  210.956591][    T0] Kernel Offset: disabled
[  210.960937][    T0] Rebooting in 86400 seconds..