Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. 2020/05/02 11:17:18 fuzzer started 2020/05/02 11:17:18 dialing manager at 10.128.0.105:44117 2020/05/02 11:17:23 syscalls: 2964 2020/05/02 11:17:23 code coverage: enabled 2020/05/02 11:17:23 comparison tracing: enabled 2020/05/02 11:17:23 extra coverage: enabled 2020/05/02 11:17:23 setuid sandbox: enabled 2020/05/02 11:17:23 namespace sandbox: enabled 2020/05/02 11:17:23 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/02 11:17:23 fault injection: enabled 2020/05/02 11:17:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/02 11:17:23 net packet injection: enabled 2020/05/02 11:17:23 net device setup: enabled 2020/05/02 11:17:23 concurrency sanitizer: enabled 2020/05/02 11:17:23 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/02 11:17:23 USB emulation: /dev/raw-gadget does not exist syzkaller login: [ 49.994289][ T6720] KCSAN: could not find function: '_find_next_bit' 2020/05/02 11:17:25 adding functions to KCSAN blacklist: 'pcpu_alloc' 'dd_has_work' '_find_next_bit' '__mark_inode_dirty' 'xas_clear_mark' 'find_get_pages_range_tag' 'blk_mq_sched_dispatch_requests' '__ext4_new_inode' 'add_timer' 'generic_write_end' 'mod_timer' 'ep_poll' '__delete_from_page_cache' 'tick_nohz_idle_stop_tick' 'do_nanosleep' 'filemap_map_pages' 'copy_process' 'page_counter_charge' [ 86.662153][ T0] ================================================================== [ 86.670699][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer [ 86.678941][ T0] [ 86.682022][ T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 1: [ 86.689795][ T0] tick_sched_do_timer+0xb4/0xd0 [ 86.694740][ T0] tick_sched_timer+0x3f/0xd0 [ 86.699430][ T0] __hrtimer_run_queues+0x271/0x600 [ 86.704626][ T0] hrtimer_interrupt+0x226/0x490 [ 86.709571][ T0] smp_apic_timer_interrupt+0xd8/0x270 [ 86.715022][ T0] apic_timer_interrupt+0xf/0x20 [ 86.719948][ T0] [ 86.722261][ T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0: [ 86.729621][ T0] tick_nohz_next_event+0x181/0x340 [ 86.734818][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 86.740352][ T0] do_idle+0x1ad/0x290 [ 86.744401][ T0] cpu_startup_entry+0x14/0x20 [ 86.749145][ T0] rest_init+0xe4/0xeb [ 86.753209][ T0] arch_call_rest_init+0x13/0x2b [ 86.758130][ T0] start_kernel+0x82d/0x852 [ 86.762617][ T0] secondary_startup_64+0xa4/0xb0 [ 86.767622][ T0] [ 86.769931][ T0] Reported by Kernel Concurrency Sanitizer on: [ 86.776074][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 86.783949][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.794086][ T0] ================================================================== [ 86.802233][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 86.808825][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 86.816706][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.826782][ T0] Call Trace: [ 86.830081][ T0] dump_stack+0x11d/0x187 [ 86.834406][ T0] panic+0x210/0x640 [ 86.838302][ T0] ? vprintk_func+0x89/0x13a [ 86.842883][ T0] kcsan_report.cold+0xc/0x1a [ 86.847545][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 86.852920][ T0] tick_nohz_next_event+0x181/0x340 [ 86.858113][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 86.863654][ T0] ? ktime_get+0x1c9/0x210 [ 86.868075][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 86.873533][ T0] do_idle+0x1ad/0x290 [ 86.877591][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 86.883030][ T0] cpu_startup_entry+0x14/0x20 [ 86.887795][ T0] rest_init+0xe4/0xeb [ 86.891853][ T0] arch_call_rest_init+0x13/0x2b [ 86.896776][ T0] start_kernel+0x82d/0x852 [ 86.901275][ T0] secondary_startup_64+0xa4/0xb0 [ 86.907450][ T0] Kernel Offset: disabled [ 86.911781][ T0] Rebooting in 86400 seconds..