Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. 2019/11/05 12:13:13 fuzzer started 2019/11/05 12:13:15 dialing manager at 10.128.0.105:39277 2019/11/05 12:13:15 syscalls: 2553 2019/11/05 12:13:15 code coverage: enabled 2019/11/05 12:13:15 comparison tracing: enabled 2019/11/05 12:13:15 extra coverage: extra coverage is not supported by the kernel 2019/11/05 12:13:15 setuid sandbox: enabled 2019/11/05 12:13:15 namespace sandbox: enabled 2019/11/05 12:13:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/05 12:13:15 fault injection: enabled 2019/11/05 12:13:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/05 12:13:15 net packet injection: enabled 2019/11/05 12:13:15 net device setup: enabled 2019/11/05 12:13:15 concurrency sanitizer: enabled 2019/11/05 12:13:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 2019/11/05 12:13:16 adding functions to KCSAN blacklist: 'pipe_poll' 'pid_update_inode' '__hrtimer_run_queues' 'ep_poll' 'tcp_add_backlog' 'task_dump_owner' 'tomoyo_supervisor' 'find_next_bit' 'ep_insert' '__ext4_new_inode' syzkaller login: [ 67.724588][ C0] ================================================================== [ 67.732801][ C0] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer [ 67.740962][ C0] [ 67.743278][ C0] read to 0xffffffff85cb26d0 of 4 bytes by interrupt on cpu 1: [ 67.750847][ C0] tick_sched_do_timer+0x33/0xe0 [ 67.755767][ C0] tick_sched_timer+0x43/0xe0 [ 67.760424][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 67.765602][ C0] hrtimer_interrupt+0x22a/0x480 [ 67.770524][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 67.775972][ C0] apic_timer_interrupt+0xf/0x20 [ 67.780895][ C0] __skb_clone+0x1/0x390 [ 67.785132][ C0] packet_rcv_spkt+0x2b9/0x310 [ 67.789886][ C0] __netif_receive_skb_core+0xe13/0x1a90 [ 67.795520][ C0] __netif_receive_skb_one_core+0x67/0xe0 [ 67.801228][ C0] __netif_receive_skb+0x37/0xf0 [ 67.806160][ C0] netif_receive_skb_internal+0x59/0x190 [ 67.811774][ C0] napi_gro_receive+0x28f/0x330 [ 67.816710][ C0] receive_buf+0x284/0x30b0 [ 67.821190][ C0] virtnet_poll+0x436/0x7d0 [ 67.825674][ C0] net_rx_action+0x3ae/0xa90 [ 67.830251][ C0] __do_softirq+0x115/0x33f [ 67.834737][ C0] run_ksoftirqd+0x46/0x60 [ 67.839144][ C0] smpboot_thread_fn+0x37d/0x4a0 [ 67.844063][ C0] kthread+0x1d4/0x200 [ 67.848118][ C0] ret_from_fork+0x1f/0x30 [ 67.852504][ C0] [ 67.854816][ C0] write to 0xffffffff85cb26d0 of 4 bytes by interrupt on cpu 0: [ 67.862428][ C0] tick_sched_do_timer+0xc0/0xe0 [ 67.867472][ C0] tick_sched_timer+0x43/0xe0 [ 67.872132][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 67.877309][ C0] hrtimer_interrupt+0x22a/0x480 [ 67.882228][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 67.887667][ C0] apic_timer_interrupt+0xf/0x20 [ 67.892579][ C0] [ 67.894883][ C0] Reported by Kernel Concurrency Sanitizer on: [ 67.901019][ C0] CPU: 0 PID: 8102 Comm: syz-fuzzer Not tainted 5.4.0-rc6+ #0 [ 67.908452][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.918501][ C0] ================================================================== [ 67.926565][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 67.933146][ C0] CPU: 0 PID: 8102 Comm: syz-fuzzer Not tainted 5.4.0-rc6+ #0 [ 67.940937][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.951397][ C0] Call Trace: [ 67.954670][ C0] [ 67.957532][ C0] dump_stack+0xf5/0x159 [ 67.961769][ C0] panic+0x210/0x640 [ 67.965659][ C0] ? vprintk_func+0x8d/0x140 [ 67.970238][ C0] kcsan_report.cold+0xc/0xe [ 67.974822][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 67.980201][ C0] __tsan_unaligned_write4+0x143/0x1f0 [ 67.985646][ C0] tick_sched_do_timer+0xc0/0xe0 [ 67.990634][ C0] tick_sched_timer+0x43/0xe0 [ 67.995628][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 68.001098][ C0] ? tick_sched_handle+0x100/0x100 [ 68.006237][ C0] hrtimer_interrupt+0x22a/0x480 [ 68.011201][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 68.016649][ C0] ? do_IRQ+0xcb/0x180 [ 68.020715][ C0] apic_timer_interrupt+0xf/0x20 [ 68.025650][ C0] [ 68.028585][ C0] RIP: 0033:0x6099e3 [ 68.032470][ C0] Code: 48 3b 61 10 0f 86 b4 01 00 00 48 83 ec 38 48 89 6c 24 30 48 8d 6c 24 30 48 8b 44 24 48 48 8b 10 e9 b6 00 00 00 48 8b 44 24 48 <48> 8b 54 24 20 48 8b 5c 24 40 48 8b 73 20 48 39 d6 73 35 48 89 1c [ 68.052063][ C0] RSP: 002b:000000c4203fba40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 68.060458][ C0] RAX: 000000c420304028 RBX: 00000000ffffffff RCX: 0000000000000000 [ 68.068413][ C0] RDX: 000000000003db2e RSI: 000000000000000c RDI: 000000000000004b [ 68.076364][ C0] RBP: 000000c4203fba70 R08: 000000c42030a000 R09: 0000000000000b2e [ 68.084329][ C0] R10: 00000000ffffffff R11: 0000000000006504 R12: 0000000000000200 [ 68.092294][ C0] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 68.101783][ C0] Kernel Offset: disabled [ 68.106129][ C0] Rebooting in 86400 seconds..