Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
2020/04/29 22:05:02 fuzzer started
2020/04/29 22:05:04 dialing manager at 10.128.0.105:39627
2020/04/29 22:05:04 syscalls: 2964
2020/04/29 22:05:04 code coverage: enabled
2020/04/29 22:05:04 comparison tracing: enabled
2020/04/29 22:05:04 extra coverage: enabled
2020/04/29 22:05:04 setuid sandbox: enabled
2020/04/29 22:05:04 namespace sandbox: enabled
2020/04/29 22:05:04 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/29 22:05:04 fault injection: enabled
2020/04/29 22:05:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/29 22:05:04 net packet injection: enabled
2020/04/29 22:05:04 net device setup: enabled
2020/04/29 22:05:04 concurrency sanitizer: enabled
2020/04/29 22:05:04 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/29 22:05:04 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   47.400332][ T6720] KCSAN: could not find function: '_find_next_bit'
2020/04/29 22:05:05 adding functions to KCSAN blacklist: 'ext4_da_write_end' 'blk_mq_dispatch_rq_list' 'find_get_pages_range_tag' 'do_exit' '_find_next_bit' '__ext4_new_inode' 'page_counter_charge' 'ep_poll' 'generic_write_end' 'run_timer_softirq' 'xas_clear_mark' 'blk_mq_get_request' 
[   53.376863][    T0] ==================================================================
[   53.385379][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer
[   53.393969][    T0] 
[   53.396293][    T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 1:
[   53.405579][    T0]  tick_sched_do_timer+0xb4/0xd0
[   53.411133][    T0]  tick_sched_timer+0x3f/0xd0
[   53.416173][    T0]  __hrtimer_run_queues+0x271/0x600
[   53.421388][    T0]  hrtimer_interrupt+0x226/0x490
[   53.426493][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   53.432566][    T0]  apic_timer_interrupt+0xf/0x20
[   53.437679][    T0]  __sanitizer_cov_trace_pc+0x1a/0x50
[   53.443582][    T0]  __bio_associate_blkg.isra.0+0x33/0x220
[   53.449302][    T0]  bio_clone_blkg_association+0x41/0x60
[   53.454845][    T0]  __bio_clone_fast+0x181/0x220
[   53.459948][    T0]  bio_clone_fast+0x43/0xc0
[   53.464454][    T0]  bio_split+0x6f/0x170
[   53.468780][    T0]  __blk_queue_split+0x613/0xc40
[   53.473712][    T0]  blk_mq_make_request+0x109/0xf60
[   53.478826][    T0]  generic_make_request+0x196/0x700
[   53.484021][    T0]  submit_bio+0x8f/0x3a0
[   53.488258][    T0]  ext4_io_submit+0xdf/0x110
[   53.492837][    T0]  ext4_writepages+0xd96/0x1e10
[   53.497687][    T0]  do_writepages+0x6b/0x170
[   53.502286][    T0]  __filemap_fdatawrite_range+0x1bb/0x220
[   53.508007][    T0]  filemap_flush+0x2a/0x40
[   53.512439][    T0]  collapse_file+0x26cf/0x26f0
[   53.517202][    T0]  khugepaged+0x1d86/0x2740
[   53.521713][    T0]  kthread+0x203/0x230
[   53.525784][    T0]  ret_from_fork+0x1f/0x30
[   53.530178][    T0] 
[   53.532500][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   53.539791][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   53.545775][    T0]  do_idle+0x1ad/0x290
[   53.549852][    T0]  cpu_startup_entry+0x14/0x20
[   53.554627][    T0]  rest_init+0xe4/0xeb
[   53.558718][    T0]  arch_call_rest_init+0x13/0x2b
[   53.563669][    T0]  start_kernel+0x82d/0x852
[   53.568170][    T0]  secondary_startup_64+0xa4/0xb0
[   53.573190][    T0] 
[   53.575698][    T0] Reported by Kernel Concurrency Sanitizer on:
[   53.582041][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   53.589907][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.600445][    T0] ==================================================================
[   53.608571][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   53.615370][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   53.623790][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.634110][    T0] Call Trace:
[   53.637591][    T0]  dump_stack+0x11d/0x187
[   53.641928][    T0]  panic+0x210/0x640
[   53.645989][    T0]  ? vprintk_func+0x89/0x13a
[   53.650685][    T0]  kcsan_report.cold+0xc/0x1a
[   53.655899][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   53.661347][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   53.666876][    T0]  do_idle+0x1ad/0x290
[   53.670925][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   53.676389][    T0]  cpu_startup_entry+0x14/0x20
[   53.681149][    T0]  rest_init+0xe4/0xeb
[   53.685200][    T0]  arch_call_rest_init+0x13/0x2b
[   53.690119][    T0]  start_kernel+0x82d/0x852
[   53.694623][    T0]  secondary_startup_64+0xa4/0xb0
[   53.701011][    T0] Kernel Offset: disabled
[   53.705902][    T0] Rebooting in 86400 seconds..