[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts.
2020/06/12 05:10:34 fuzzer started
2020/06/12 05:10:34 dialing manager at 10.128.0.105:39483
2020/06/12 05:10:38 syscalls: 3085
2020/06/12 05:10:38 code coverage: enabled
2020/06/12 05:10:38 comparison tracing: enabled
2020/06/12 05:10:38 extra coverage: enabled
2020/06/12 05:10:38 setuid sandbox: enabled
2020/06/12 05:10:38 namespace sandbox: enabled
2020/06/12 05:10:38 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/12 05:10:38 fault injection: enabled
2020/06/12 05:10:38 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/12 05:10:38 net packet injection: enabled
2020/06/12 05:10:38 net device setup: enabled
2020/06/12 05:10:38 concurrency sanitizer: enabled
2020/06/12 05:10:38 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/12 05:10:38 USB emulation: enabled
syzkaller login: [ 58.345440][ T8918] KCSAN: could not find function: '_find_next_bit'
2020/06/12 05:10:41 adding functions to KCSAN blacklist: 'ep_poll' '__ext4_new_inode' 'do_nanosleep' 'dd_has_work' 'add_timer' 'xas_clear_mark' 'tick_nohz_idle_stop_tick' 'page_counter_charge' '_find_next_bit' 'blk_mq_sched_dispatch_requests' 'generic_write_end' '__snd_rawmidi_transmit_ack' 'file_update_time' 'blk_mq_get_request' 'complete_signal' 'futex_wait_queue_me' 'mod_timer' 'generic_file_read_iter' 'copy_process' 'ext4_free_inodes_count'
[ 116.403079][ C0] ==================================================================
[ 116.411499][ C0] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer
[ 116.419546][ C0]
[ 116.422410][ C0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1:
[ 116.430029][ C0] tick_sched_do_timer+0xb4/0xd0
[ 116.434950][ C0] tick_sched_timer+0x3f/0xd0
[ 116.439622][ C0] __hrtimer_run_queues+0x271/0x600
[ 116.444795][ C0] hrtimer_interrupt+0x226/0x490
[ 116.449711][ C0] smp_apic_timer_interrupt+0xd8/0x270
[ 116.455496][ C0] apic_timer_interrupt+0xf/0x20
[ 116.461148][ C0]
[ 116.463455][ C0] read to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0:
[ 116.470995][ C0] tick_sched_do_timer+0x2e/0xd0
[ 116.475932][ C0] tick_sched_timer+0x3f/0xd0
[ 116.480592][ C0] __hrtimer_run_queues+0x271/0x600
[ 116.485776][ C0] hrtimer_interrupt+0x226/0x490
[ 116.490705][ C0] smp_apic_timer_interrupt+0xd8/0x270
[ 116.496157][ C0] apic_timer_interrupt+0xf/0x20
[ 116.501204][ C0] native_safe_halt+0xe/0x10
[ 116.505807][ C0] default_idle+0x21/0x170
[ 116.510213][ C0] do_idle+0x1b7/0x290
[ 116.514262][ C0] cpu_startup_entry+0x14/0x20
[ 116.519017][ C0] rest_init+0xe4/0xeb
[ 116.523066][ C0] arch_call_rest_init+0x13/0x2b
[ 116.527989][ C0] start_kernel+0x7fe/0x823
[ 116.532471][ C0] secondary_startup_64+0xa4/0xb0
[ 116.537479][ C0]
[ 116.539782][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 116.545926][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[ 116.553787][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 116.563828][ C0] ==================================================================
[ 116.571875][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 116.578440][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[ 116.586314][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 116.596432][ C0] Call Trace:
[ 116.599709][ C0]
[ 116.602561][ C0] dump_stack+0x11d/0x187
[ 116.607103][ C0] panic+0x210/0x640
[ 116.610992][ C0] ? vprintk_func+0x89/0x13a
[ 116.615611][ C0] kcsan_report.cold+0xc/0x1a
[ 116.620299][ C0] kcsan_setup_watchpoint+0x3fb/0x440
[ 116.625674][ C0] tick_sched_do_timer+0x2e/0xd0
[ 116.630616][ C0] tick_sched_timer+0x3f/0xd0
[ 116.635306][ C0] __hrtimer_run_queues+0x271/0x600
[ 116.640490][ C0] ? tick_sched_do_timer+0xd0/0xd0
[ 116.645586][ C0] hrtimer_interrupt+0x226/0x490
[ 116.650525][ C0] ? kvm_clock_read+0x14/0x30
[ 116.655207][ C0] smp_apic_timer_interrupt+0xd8/0x270
[ 116.660668][ C0] apic_timer_interrupt+0xf/0x20
[ 116.665588][ C0]
[ 116.668511][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 116.673881][ C0] Code: ff cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 0c d6 58 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d fc d5 58 00 fb f4 cc 41 54 55 53 e8 97 b2 71 fb e8 a2 21 bc fc 0f 1f 44 00 00 48
[ 116.693483][ C0] RSP: 0018:ffffffff87203e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 116.701903][ C0] RAX: 0000000000000000 RBX: ffffffff8722b840 RCX: ffffffff8285fdf1
[ 116.709858][ C0] RDX: 0000000000000000 RSI: ffffffff8285fdfa RDI: 0000000000000005
[ 116.717914][ C0] RBP: 0000000000000000 R08: ffffffff8722b840 R09: 0000ffff87047920
[ 116.726645][ C0] R10: 0000ffff87203e58 R11: 0000ffff87047927 R12: ffffffff8722b840
[ 116.734600][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8722b840
[ 116.742588][ C0] ? debug_smp_processor_id+0x31/0x129
[ 116.748035][ C0] ? debug_smp_processor_id+0x3a/0x129
[ 116.753540][ C0] default_idle+0x21/0x170
[ 116.757976][ C0] do_idle+0x1b7/0x290
[ 116.762163][ C0] ? debug_smp_processor_id+0x3f/0x129
[ 116.767620][ C0] cpu_startup_entry+0x14/0x20
[ 116.772392][ C0] rest_init+0xe4/0xeb
[ 116.776481][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[ 116.782706][ C0] arch_call_rest_init+0x13/0x2b
[ 116.787632][ C0] start_kernel+0x7fe/0x823
[ 116.792131][ C0] secondary_startup_64+0xa4/0xb0
[ 116.798620][ C0] Kernel Offset: disabled
[ 116.802951][ C0] Rebooting in 86400 seconds..