[info] Using makefile-style concurrent boot in runlevel 2. [ 50.662410][ T27] audit: type=1800 audit(1580682176.123:21): pid=7824 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0 [ 50.717633][ T27] audit: type=1800 audit(1580682176.123:22): pid=7824 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. 2020/02/02 22:23:07 fuzzer started 2020/02/02 22:23:08 dialing manager at 10.128.0.105:41149 2020/02/02 22:23:08 syscalls: 2904 2020/02/02 22:23:08 code coverage: enabled 2020/02/02 22:23:08 comparison tracing: enabled 2020/02/02 22:23:08 extra coverage: enabled 2020/02/02 22:23:08 setuid sandbox: enabled 2020/02/02 22:23:08 namespace sandbox: enabled 2020/02/02 22:23:08 Android sandbox: /sys/fs/selinux/policy does not exist 2020/02/02 22:23:08 fault injection: enabled 2020/02/02 22:23:08 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/02/02 22:23:08 net packet injection: enabled 2020/02/02 22:23:08 net device setup: enabled 2020/02/02 22:23:08 concurrency sanitizer: enabled 2020/02/02 22:23:08 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 64.111741][ T7995] KCSAN: could not find function: 'decode_data' [ 67.911460][ C1] ================================================================== [ 67.919562][ C1] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 67.928485][ C1] [ 67.930847][ C1] write to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 0: [ 67.938202][ C1] tick_do_update_jiffies64+0x100/0x250 [ 67.943750][ C1] tick_irq_enter+0x139/0x1c0 [ 67.948405][ C1] irq_enter+0x4f/0x60 [ 67.952462][ C1] smp_apic_timer_interrupt+0x55/0x280 [ 67.957903][ C1] apic_timer_interrupt+0xf/0x20 [ 67.962826][ C1] native_safe_halt+0xe/0x10 [ 67.967409][ C1] arch_cpu_idle+0xa/0x10 [ 67.971727][ C1] default_idle_call+0x1e/0x40 [ 67.976515][ C1] do_idle+0x1c2/0x290 [ 67.980563][ C1] cpu_startup_entry+0x1b/0x20 [ 67.985310][ C1] rest_init+0xec/0xf6 [ 67.989366][ C1] arch_call_rest_init+0x17/0x37 [ 67.994280][ C1] start_kernel+0x838/0x85e [ 67.998786][ C1] x86_64_start_reservations+0x29/0x2b [ 68.004230][ C1] x86_64_start_kernel+0x72/0x76 [ 68.009147][ C1] secondary_startup_64+0xa4/0xb0 [ 68.014151][ C1] [ 68.016459][ C1] read to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 1: [ 68.023980][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 68.029425][ C1] tick_sched_do_timer+0xd4/0xe0 [ 68.034786][ C1] tick_sched_timer+0x43/0xe0 [ 68.039448][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 68.044746][ C1] hrtimer_interrupt+0x22a/0x480 [ 68.049679][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 68.055118][ C1] apic_timer_interrupt+0xf/0x20 [ 68.060046][ C1] kcsan_setup_watchpoint+0x1d4/0x460 [ 68.065406][ C1] __tsan_unaligned_write1+0xc3/0x100 [ 68.070765][ C1] kallsyms_expand_symbol.constprop.0+0xe8/0x160 [ 68.077074][ C1] kallsyms_lookup_name+0x7f/0x120 [ 68.082171][ C1] debugfs_write+0x14b/0x2d0 [ 68.086737][ C1] full_proxy_write+0xbd/0x100 [ 68.091495][ C1] __vfs_write+0x67/0xc0 [ 68.095718][ C1] vfs_write+0x18a/0x390 [ 68.099936][ C1] ksys_write+0xd5/0x1b0 [ 68.104156][ C1] __x64_sys_write+0x4c/0x60 [ 68.108725][ C1] do_syscall_64+0xcc/0x3a0 [ 68.113209][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.119162][ C1] [ 68.121465][ C1] Reported by Kernel Concurrency Sanitizer on: [ 68.127605][ C1] CPU: 1 PID: 7995 Comm: syz-executor Not tainted 5.5.0-rc1-syzkaller #0 [ 68.136121][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.146430][ C1] ================================================================== [ 68.157690][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 68.164266][ C1] CPU: 1 PID: 7995 Comm: syz-executor Not tainted 5.5.0-rc1-syzkaller #0 [ 68.172657][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.182693][ C1] Call Trace: [ 68.185955][ C1] [ 68.188893][ C1] dump_stack+0x11d/0x181 [ 68.193481][ C1] panic+0x210/0x640 [ 68.197390][ C1] ? vprintk_func+0x8d/0x140 [ 68.202054][ C1] kcsan_report.cold+0xc/0xd [ 68.206628][ C1] kcsan_setup_watchpoint+0x3fe/0x460 [ 68.211978][ C1] __tsan_read8+0xc6/0x100 [ 68.216376][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 68.221826][ C1] tick_sched_do_timer+0xd4/0xe0 [ 68.226743][ C1] tick_sched_timer+0x43/0xe0 [ 68.231412][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 68.236593][ C1] ? tick_sched_handle+0x100/0x100 [ 68.241683][ C1] hrtimer_interrupt+0x22a/0x480 [ 68.246623][ C1] ? sched_clock+0x13/0x20 [ 68.251031][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 68.256532][ C1] apic_timer_interrupt+0xf/0x20 [ 68.261455][ C1] [ 68.264382][ C1] RIP: 0010:kcsan_setup_watchpoint+0x1d4/0x460 [ 68.270608][ C1] Code: 01 00 00 83 fe 03 0f 85 39 ff ff ff bf 03 00 00 00 e8 40 16 00 00 48 83 3d e0 bd 72 04 00 0f 84 8f 02 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 0f 1f 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d [ 68.290277][ C1] RSP: 0018:ffffc900016c7ba8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 68.298683][ C1] RAX: 8002c900016c7c6c RBX: 0000000000000001 RCX: 0000000000000000 [ 68.306638][ C1] RDX: 0000000000000074 RSI: ffffffff82546c5e RDI: 0000000000000282 [ 68.314596][ C1] RBP: ffffc900016c7be0 R08: ffff88812ac90080 R09: 00000000aaaaaaab [ 68.322668][ C1] R10: 0000c900016c7c6c R11: 000088812ac90bd7 R12: 0000000000000001 [ 68.330631][ C1] R13: ffffc900016c7c6c R14: ffffc900016c7c6d R15: ffffffff86252500 [ 68.338628][ C1] ? debug_smp_processor_id+0x3e/0x137 [ 68.344076][ C1] __tsan_unaligned_write1+0xc3/0x100 [ 68.349447][ C1] kallsyms_expand_symbol.constprop.0+0xe8/0x160 [ 68.355806][ C1] kallsyms_lookup_name+0x7f/0x120 [ 68.360902][ C1] ? __check_object_size+0x5f/0x346 [ 68.366101][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 68.372325][ C1] ? strlen+0x3b/0x60 [ 68.376291][ C1] debugfs_write+0x14b/0x2d0 [ 68.380862][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 68.386744][ C1] ? __read_once_size+0x5a/0xe0 [ 68.391601][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.398080][ C1] ? debugfs_file_get+0x12c/0x2a0 [ 68.403082][ C1] full_proxy_write+0xbd/0x100 [ 68.407837][ C1] __vfs_write+0x67/0xc0 [ 68.412056][ C1] ? full_proxy_poll+0xf0/0xf0 [ 68.416800][ C1] vfs_write+0x18a/0x390 [ 68.421034][ C1] ksys_write+0xd5/0x1b0 [ 68.425260][ C1] __x64_sys_write+0x4c/0x60 [ 68.430003][ C1] do_syscall_64+0xcc/0x3a0 [ 68.434504][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.440491][ C1] RIP: 0033:0x414e50 [ 68.444381][ C1] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 1d 36 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 68.464141][ C1] RSP: 002b:00007ffd46e33b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 68.472530][ C1] RAX: ffffffffffffffda RBX: 0000000000000015 RCX: 0000000000414e50 [ 68.480743][ C1] RDX: 0000000000000015 RSI: 00000000010d6950 RDI: 0000000000000003 [ 68.488866][ C1] RBP: 00000000010d6950 R08: 0000000000000000 R09: 0000000000000015 [ 68.496815][ C1] R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000000015 [ 68.504768][ C1] R13: 0000000000000001 R14: 00007ffd46e33bb0 R15: 0000000000000000 [ 68.514168][ C1] Kernel Offset: disabled [ 68.518500][ C1] Rebooting in 86400 seconds..