Warning: Permanently added '10.128.15.230' (ECDSA) to the list of known hosts. 2019/10/22 02:01:41 fuzzer started 2019/10/22 02:01:43 dialing manager at 10.128.0.105:37053 2019/10/22 02:01:43 syscalls: 2524 2019/10/22 02:01:43 code coverage: enabled 2019/10/22 02:01:43 comparison tracing: enabled 2019/10/22 02:01:43 extra coverage: extra coverage is not supported by the kernel 2019/10/22 02:01:43 setuid sandbox: enabled 2019/10/22 02:01:43 namespace sandbox: enabled 2019/10/22 02:01:43 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 02:01:43 fault injection: enabled 2019/10/22 02:01:43 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 02:01:43 net packet injection: enabled 2019/10/22 02:01:43 net device setup: enabled 2019/10/22 02:01:43 concurrency sanitizer: enabled syzkaller login: [ 55.739776][ C1] ================================================================== [ 55.747935][ C1] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer [ 55.756070][ C1] [ 55.758453][ C1] write to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 0: [ 55.766133][ C1] tick_sched_do_timer+0xc0/0xe0 [ 55.771671][ C1] tick_sched_timer+0x43/0xe0 [ 55.776483][ C1] __hrtimer_run_queues+0x288/0x600 [ 55.781680][ C1] hrtimer_interrupt+0x22a/0x480 [ 55.786613][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 55.792057][ C1] apic_timer_interrupt+0xf/0x20 [ 55.796977][ C1] __sanitizer_cov_trace_pc+0x26/0x50 [ 55.802343][ C1] nf_ct_deliver_cached_events+0xe1/0x2a0 [ 55.808041][ C1] nf_confirm+0x27d/0x2b0 [ 55.812343][ C1] ipv4_confirm+0xcf/0x160 [ 55.816918][ C1] nf_hook_slow+0x83/0x160 [ 55.821321][ C1] ip_output+0x1d3/0x210 [ 55.825546][ C1] ip_local_out+0x74/0x90 [ 55.829889][ C1] __ip_queue_xmit+0x3a8/0xa40 [ 55.834651][ C1] [ 55.836971][ C1] read to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 1: [ 55.844611][ C1] tick_sched_do_timer+0x33/0xe0 [ 55.849794][ C1] tick_sched_timer+0x43/0xe0 [ 55.854578][ C1] __hrtimer_run_queues+0x288/0x600 [ 55.859754][ C1] hrtimer_interrupt+0x22a/0x480 [ 55.864675][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 55.870127][ C1] apic_timer_interrupt+0xf/0x20 [ 55.875185][ C1] write_comp_data+0x9/0x70 [ 55.879673][ C1] eth_type_trans+0xac/0x3d0 [ 55.884266][ C1] receive_buf+0x265/0x30b0 [ 55.888756][ C1] virtnet_poll+0x436/0x7d0 [ 55.893243][ C1] net_rx_action+0x3ae/0xa90 [ 55.897940][ C1] __do_softirq+0x115/0x33f [ 55.902439][ C1] run_ksoftirqd+0x46/0x60 [ 55.907178][ C1] [ 55.909532][ C1] Reported by Kernel Concurrency Sanitizer on: [ 55.915672][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 [ 55.923026][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.933071][ C1] ================================================================== [ 55.941108][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 55.947672][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 [ 55.955013][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.965042][ C1] Call Trace: [ 55.968356][ C1] [ 55.971235][ C1] dump_stack+0xf5/0x159 [ 55.975462][ C1] panic+0x210/0x640 [ 55.979361][ C1] ? receive_buf+0x265/0x30b0 [ 55.984048][ C1] ? vprintk_func+0x8d/0x140 [ 55.988639][ C1] kcsan_report.cold+0xc/0x10 [ 55.993296][ C1] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 55.998826][ C1] __tsan_read4+0x2c/0x30 [ 56.003136][ C1] tick_sched_do_timer+0x33/0xe0 [ 56.008051][ C1] tick_sched_timer+0x43/0xe0 [ 56.012731][ C1] __hrtimer_run_queues+0x288/0x600 [ 56.017909][ C1] ? tick_sched_do_timer+0xe0/0xe0 [ 56.023004][ C1] hrtimer_interrupt+0x22a/0x480 [ 56.027930][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 56.033376][ C1] ? do_IRQ+0xcb/0x180 [ 56.037425][ C1] apic_timer_interrupt+0xf/0x20 [ 56.042359][ C1] [ 56.045295][ C1] RIP: 0010:write_comp_data+0x9/0x70 [ 56.050584][ C1] Code: 0a 00 00 8b 80 0c 0a 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 40 6c 01 00 <65> 8b 05 c8 a3 bb 7e a9 00 01 1f 00 75 51 41 8b 80 08 0a 00 00 83 [ 56.070697][ C1] RSP: 0018:ffffc90000cf3b30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 56.079869][ C1] RAX: f5c28f5c28f5fb44 RBX: ffff888122fec840 RCX: ffffffff83c0f8ec [ 56.087833][ C1] RDX: 0000000000000132 RSI: 000000000000000d RDI: 0000000000000005 [ 56.095934][ C1] RBP: ffffc90000cf3b38 R08: ffff88812b3a7080 R09: 00008881267b7c73 [ 56.104076][ C1] R10: 00000000aaaaaaab R11: ffffffff86045dd0 R12: ffff8881267b7c00 [ 56.112077][ C1] R13: ffff88812a18f000 R14: 0000000000000132 R15: ffff8881267b7c70 [ 56.120054][ C1] ? eth_type_trans+0xac/0x3d0 [ 56.124810][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.131033][ C1] eth_type_trans+0xac/0x3d0 [ 56.135627][ C1] receive_buf+0x265/0x30b0 [ 56.140118][ C1] ? __tsan_write8+0x32/0x40 [ 56.144741][ C1] ? virtqueue_get_buf_ctx+0x4fd/0x5c0 [ 56.151658][ C1] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 56.157282][ C1] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 56.163042][ C1] virtnet_poll+0x436/0x7d0 [ 56.167539][ C1] net_rx_action+0x3ae/0xa90 [ 56.172122][ C1] __do_softirq+0x115/0x33f [ 56.176774][ C1] ? takeover_tasklets+0x250/0x250 [ 56.182184][ C1] run_ksoftirqd+0x46/0x60 [ 56.186729][ C1] smpboot_thread_fn+0x37d/0x4a0 [ 56.191672][ C1] kthread+0x1d4/0x200 [ 56.195729][ C1] ? constant_test_bit.constprop.0+0x30/0x30 [ 56.201698][ C1] ? kthread_stop+0x2d0/0x2d0 [ 56.206513][ C1] ret_from_fork+0x1f/0x30 [ 56.212565][ C1] Kernel Offset: disabled [ 56.216901][ C1] Rebooting in 86400 seconds..