Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. 2020/05/31 10:40:03 fuzzer started 2020/05/31 10:40:03 dialing manager at 10.128.0.105:33205 2020/05/31 10:40:13 syscalls: 3055 2020/05/31 10:40:13 code coverage: enabled 2020/05/31 10:40:13 comparison tracing: enabled 2020/05/31 10:40:13 extra coverage: enabled 2020/05/31 10:40:13 setuid sandbox: enabled 2020/05/31 10:40:13 namespace sandbox: enabled 2020/05/31 10:40:13 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/31 10:40:13 fault injection: enabled 2020/05/31 10:40:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/31 10:40:13 net packet injection: enabled 2020/05/31 10:40:13 net device setup: enabled 2020/05/31 10:40:13 concurrency sanitizer: enabled 2020/05/31 10:40:13 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/31 10:40:13 USB emulation: enabled syzkaller login: [ 61.366347][ T8918] KCSAN: could not find function: '_find_next_bit' 2020/05/31 10:40:17 adding functions to KCSAN blacklist: 'find_get_pages_range_tag' 'ext4_da_write_end' 'run_timer_softirq' 'ext4_mark_iloc_dirty' 'ep_poll' 'generic_write_end' 'blk_mq_sched_dispatch_requests' '__mark_inode_dirty' 'xas_clear_mark' 'add_timer' 'generic_fillattr' 'fasync_remove_entry' 'ext4_free_inodes_count' 'blk_mq_get_request' 'do_nanosleep' 'mod_timer' 'tick_nohz_next_event' 'do_signal_stop' '__ext4_new_inode' 'futex_wait_queue_me' 'do_syslog' 'kauditd_thread' '_find_next_bit' 'copy_process' 'snd_rawmidi_kernel_write1' 'blk_mq_dispatch_rq_list' 'page_counter_charge' 'decrypt_packet' 'iput' [ 148.182573][ T0] ================================================================== [ 148.190730][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer [ 148.199214][ T0] [ 148.201541][ T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1: [ 148.209172][ T0] tick_sched_do_timer+0xb4/0xd0 [ 148.214570][ T0] tick_sched_timer+0x3f/0xd0 [ 148.219239][ T0] __hrtimer_run_queues+0x271/0x600 [ 148.224454][ T0] hrtimer_interrupt+0x226/0x490 [ 148.229405][ T0] smp_apic_timer_interrupt+0xd8/0x270 [ 148.234879][ T0] apic_timer_interrupt+0xf/0x20 [ 148.239810][ T0] __sock_wfree+0x2c/0xe0 [ 148.244140][ T0] skb_release_head_state+0xb0/0x180 [ 148.249683][ T0] skb_release_all+0x1b/0x50 [ 148.254451][ T0] napi_consume_skb+0xf6/0x310 [ 148.259211][ T0] free_old_xmit_skbs+0x73/0x170 [ 148.264158][ T0] virtnet_poll_tx+0x11d/0x1c0 [ 148.269040][ T0] net_rx_action+0x3ad/0xac0 [ 148.273605][ T0] __do_softirq+0x118/0x34a [ 148.278090][ T0] run_ksoftirqd+0x41/0x60 [ 148.282500][ T0] smpboot_thread_fn+0x374/0x4a0 [ 148.287439][ T0] kthread+0x203/0x230 [ 148.291507][ T0] ret_from_fork+0x1f/0x30 [ 148.295915][ T0] [ 148.298233][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0: [ 148.305505][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 148.311029][ T0] do_idle+0x1ad/0x290 [ 148.315088][ T0] cpu_startup_entry+0x14/0x20 [ 148.319840][ T0] rest_init+0xe4/0xeb [ 148.323928][ T0] arch_call_rest_init+0x13/0x2b [ 148.328842][ T0] start_kernel+0x7fe/0x823 [ 148.333322][ T0] secondary_startup_64+0xa4/0xb0 [ 148.338326][ T0] [ 148.340650][ T0] Reported by Kernel Concurrency Sanitizer on: [ 148.346783][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 148.354643][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.364690][ T0] ================================================================== [ 148.372831][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 148.379410][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 148.387288][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.397851][ T0] Call Trace: [ 148.401275][ T0] dump_stack+0x11d/0x187 [ 148.405640][ T0] panic+0x210/0x640 [ 148.409568][ T0] ? vprintk_func+0x89/0x13a [ 148.414140][ T0] kcsan_report.cold+0xc/0x1a [ 148.418846][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 148.424206][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 148.429735][ T0] do_idle+0x1ad/0x290 [ 148.433798][ T0] ? debug_smp_processor_id+0x3a/0x129 [ 148.439273][ T0] cpu_startup_entry+0x14/0x20 [ 148.444226][ T0] rest_init+0xe4/0xeb [ 148.448282][ T0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 148.454521][ T0] arch_call_rest_init+0x13/0x2b [ 148.459457][ T0] start_kernel+0x7fe/0x823 [ 148.463943][ T0] secondary_startup_64+0xa4/0xb0 [ 148.470327][ T0] Kernel Offset: disabled [ 148.474658][ T0] Rebooting in 86400 seconds..