Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts.
2020/07/31 00:06:07 fuzzer started
2020/07/31 00:06:07 dialing manager at 10.128.0.105:45459
2020/07/31 00:06:18 syscalls: 3254
2020/07/31 00:06:18 code coverage: enabled
2020/07/31 00:06:18 comparison tracing: enabled
2020/07/31 00:06:18 extra coverage: enabled
2020/07/31 00:06:18 setuid sandbox: enabled
2020/07/31 00:06:18 namespace sandbox: enabled
2020/07/31 00:06:18 Android sandbox: /sys/fs/selinux/policy does not exist
2020/07/31 00:06:18 fault injection: enabled
2020/07/31 00:06:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/07/31 00:06:18 net packet injection: enabled
2020/07/31 00:06:18 net device setup: enabled
2020/07/31 00:06:18 concurrency sanitizer: enabled
2020/07/31 00:06:18 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/07/31 00:06:18 USB emulation: enabled
2020/07/31 00:06:18 hci packet injection: enabled
2020/07/31 00:06:21 suppressing KCSAN reports in functions: 'ext4_free_inode' 'dd_has_work' 'snd_rawmidi_kernel_write1' 'ext4_mb_regular_allocator' 'ext4_writepages' 'xas_clear_mark' 'n_tty_receive_buf_common' '__xa_clear_mark' 'shmem_symlink' 'expire_timers' 'kcm_rfree' 'bpf_lru_pop_free' '__ext4_new_inode' 'alloc_pid' 'ext4_free_inodes_count' 'exit_signals' '__blk_mq_sched_dispatch_requests' 'io_sq_thread' '__mark_inode_dirty' 'do_mpage_readpage' 'ext4_mark_iloc_dirty' 'do_nanosleep' 'do_epoll_wait' 'find_get_pages_range_tag' 'generic_write_end' 'shmem_getpage_gfp' 'shmem_file_read_iter' '__send_signal' 'snd_rawmidi_poll' 'do_signal_stop' 'blk_mq_dispatch_rq_list' '__mod_timer' 'do_sys_poll' 'generic_file_buffered_read' '__add_to_page_cache_locked' '__ext4_update_other_inode_time' 'pcpu_alloc' 'blk_mq_rq_ctx_init' 'blk_mq_sched_dispatch_requests' 'page_counter_charge'
syzkaller login: [ 111.233279][ C1] ==================================================================
[ 111.241482][ C1] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle
[ 111.248855][ C1]
[ 111.251172][ C1] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0:
[ 111.258527][ C1] timer_clear_idle+0x2e/0x40
[ 111.263274][ C1] tick_nohz_idle_retain_tick+0x3e/0x40
[ 111.268799][ C1] do_idle+0x287/0x310
[ 111.272910][ C1] cpu_startup_entry+0x15/0x20
[ 111.277661][ C1] rest_init+0xd8/0xe0
[ 111.281708][ C1] arch_call_rest_init+0xa/0xb
[ 111.286502][ C1] start_kernel+0x608/0x6d0
[ 111.290990][ C1] secondary_startup_64+0xa4/0xb0
[ 111.296033][ C1]
[ 111.298345][ C1] read to 0xffff88812c01cb24 of 1 bytes by interrupt on cpu 1:
[ 111.305866][ C1] add_timer_on+0x218/0x3b0
[ 111.310350][ C1] clocksource_watchdog+0x729/0x760
[ 111.315572][ C1] call_timer_fn+0x30/0x2a0
[ 111.320098][ C1] expire_timers+0x116/0x290
[ 111.324665][ C1] __run_timers+0x443/0x500
[ 111.329200][ C1] run_timer_softirq+0x2e/0x60
[ 111.334072][ C1] __do_softirq+0x198/0x360
[ 111.338601][ C1] asm_call_on_stack+0xf/0x20
[ 111.343255][ C1] do_softirq_own_stack+0x5d/0x80
[ 111.348262][ C1] __irq_exit_rcu+0x115/0x120
[ 111.352919][ C1] sysvec_apic_timer_interrupt+0xba/0xd0
[ 111.358535][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20
[ 111.364516][ C1] native_safe_halt+0xe/0x10
[ 111.369088][ C1] acpi_idle_enter+0x2ff/0x680
[ 111.373834][ C1] cpuidle_enter_state+0x245/0x5d0
[ 111.379061][ C1] cpuidle_enter+0x3c/0x60
[ 111.383503][ C1] do_idle+0x229/0x310
[ 111.387556][ C1] cpu_startup_entry+0x15/0x20
[ 111.392423][ C1] start_secondary+0xe3/0x110
[ 111.397080][ C1] secondary_startup_64+0xa4/0xb0
[ 111.402080][ C1]
[ 111.404431][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 111.410566][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc7-syzkaller #0
[ 111.418432][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 111.428482][ C1] ==================================================================
[ 111.436525][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 111.443143][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc7-syzkaller #0
[ 111.451130][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 111.461165][ C1] Call Trace:
[ 111.464435][ C1]
[ 111.467272][ C1] dump_stack+0x10f/0x19d
[ 111.471630][ C1] panic+0x207/0x64a
[ 111.475512][ C1] ? vprintk_emit+0x44a/0x4f0
[ 111.480289][ C1] kcsan_report+0x684/0x690
[ 111.484786][ C1] ? kcsan_setup_watchpoint+0x453/0x4d0
[ 111.490321][ C1] ? add_timer_on+0x218/0x3b0
[ 111.495251][ C1] ? clocksource_watchdog+0x729/0x760
[ 111.500650][ C1] ? call_timer_fn+0x30/0x2a0
[ 111.505307][ C1] ? expire_timers+0x116/0x290
[ 111.510107][ C1] ? __run_timers+0x443/0x500
[ 111.514767][ C1] ? run_timer_softirq+0x2e/0x60
[ 111.519690][ C1] ? __do_softirq+0x198/0x360
[ 111.524473][ C1] ? asm_call_on_stack+0xf/0x20
[ 111.529352][ C1] ? do_softirq_own_stack+0x5d/0x80
[ 111.534543][ C1] ? __irq_exit_rcu+0x115/0x120
[ 111.539429][ C1] ? sysvec_apic_timer_interrupt+0xba/0xd0
[ 111.545474][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[ 111.551606][ C1] ? native_safe_halt+0xe/0x10
[ 111.556403][ C1] ? acpi_idle_enter+0x2ff/0x680
[ 111.561369][ C1] ? cpuidle_enter_state+0x245/0x5d0
[ 111.566639][ C1] ? cpuidle_enter+0x3c/0x60
[ 111.571212][ C1] ? do_idle+0x229/0x310
[ 111.575435][ C1] ? cpu_startup_entry+0x15/0x20
[ 111.580355][ C1] ? start_secondary+0xe3/0x110
[ 111.585326][ C1] ? secondary_startup_64+0xa4/0xb0
[ 111.590564][ C1] ? xfs_trans_reserve_quota_nblks+0xa4/0xe0
[ 111.596573][ C1] ? find_next_and_bit+0xf8/0x140
[ 111.601577][ C1] ? cpumask_next_and+0x11/0x30
[ 111.606628][ C1] kcsan_setup_watchpoint+0x453/0x4d0
[ 111.612035][ C1] add_timer_on+0x218/0x3b0
[ 111.616521][ C1] clocksource_watchdog+0x729/0x760
[ 111.621704][ C1] ? __clocksource_select+0x340/0x340
[ 111.627128][ C1] call_timer_fn+0x30/0x2a0
[ 111.631616][ C1] ? __clocksource_select+0x340/0x340
[ 111.637256][ C1] expire_timers+0x116/0x290
[ 111.641958][ C1] __run_timers+0x443/0x500
[ 111.646489][ C1] ? kvm_sched_clock_read+0x15/0x40
[ 111.651744][ C1] run_timer_softirq+0x2e/0x60
[ 111.656541][ C1] __do_softirq+0x198/0x360
[ 111.661029][ C1] asm_call_on_stack+0xf/0x20
[ 111.665684][ C1]
[ 111.668602][ C1] do_softirq_own_stack+0x5d/0x80
[ 111.673606][ C1] __irq_exit_rcu+0x115/0x120
[ 111.678397][ C1] sysvec_apic_timer_interrupt+0xba/0xd0
[ 111.684058][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20
[ 111.690018][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 111.695386][ C1] Code: 75 0a e8 25 23 51 fb e9 03 ff ff ff e8 1b 23 51 fb e9 6d ff ff ff cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 84 b8 4b 00 fb f4 90 e9 07 00 00 00 0f 00 2d 74 b8 4b 00 f4 c3 cc cc 65 48 8b 04
[ 111.715213][ C1] RSP: 0018:ffffc90000cd3de8 EFLAGS: 00000286
[ 111.721348][ C1] RAX: ffff88812b797a58 RBX: 0000000000000000 RCX: 000000000000009b
[ 111.729346][ C1] RDX: 0000ffff87a61f00 RSI: 0000000000000000 RDI: ffffffff87a61f00
[ 111.737295][ C1] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000ffff87a61f07
[ 111.745249][ C1] R10: 0000000000000002 R11: ffff88812b797040 R12: 0000000000000001
[ 111.753732][ C1] R13: ffff88821a4c3404 R14: 0000000000000001 R15: ffff88821b773a70
[ 111.761845][ C1] acpi_idle_enter+0x2ff/0x680
[ 111.766771][ C1] cpuidle_enter_state+0x245/0x5d0
[ 111.771866][ C1] cpuidle_enter+0x3c/0x60
[ 111.776387][ C1] do_idle+0x229/0x310
[ 111.780492][ C1] cpu_startup_entry+0x15/0x20
[ 111.785291][ C1] start_secondary+0xe3/0x110
[ 111.790081][ C1] secondary_startup_64+0xa4/0xb0
[ 112.853362][ C1] Shutting down cpus with NMI
[ 112.859529][ C1] Kernel Offset: disabled
[ 112.863846][ C1] Rebooting in 86400 seconds..