[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 48.501964][ T27] audit: type=1800 audit(1580878935.975:21): pid=7889 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 48.540555][ T27] audit: type=1800 audit(1580878935.975:22): pid=7889 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.136' (ECDSA) to the list of known hosts.
2020/02/05 05:02:27 fuzzer started
2020/02/05 05:02:30 dialing manager at 10.128.0.105:41149
2020/02/05 05:02:30 syscalls: 2904
2020/02/05 05:02:30 code coverage: enabled
2020/02/05 05:02:30 comparison tracing: enabled
2020/02/05 05:02:30 extra coverage: enabled
2020/02/05 05:02:30 setuid sandbox: enabled
2020/02/05 05:02:30 namespace sandbox: enabled
2020/02/05 05:02:30 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 05:02:30 fault injection: enabled
2020/02/05 05:02:30 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 05:02:30 net packet injection: enabled
2020/02/05 05:02:30 net device setup: enabled
2020/02/05 05:02:30 concurrency sanitizer: enabled
2020/02/05 05:02:30 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 63.980191][ T8058] KCSAN: could not find function: 'poll_schedule_timeout'
[ 78.769168][ C0] ==================================================================
[ 78.777387][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 78.785086][ C0]
[ 78.787407][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 78.794939][ C0] hrtimer_active+0x84/0x1a0
[ 78.799538][ C0] task_tick_fair+0x4c/0x910
[ 78.804120][ C0] scheduler_tick+0x5f/0xf0
[ 78.808620][ C0] update_process_times+0x5a/0x80
[ 78.813643][ C0] tick_sched_handle+0x75/0x100
[ 78.818485][ C0] tick_sched_timer+0x58/0xe0
[ 78.823159][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 78.828349][ C0] hrtimer_interrupt+0x22a/0x480
[ 78.833285][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 78.838736][ C0] apic_timer_interrupt+0xf/0x20
[ 78.843662][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 78.849023][ C0] __tsan_read1+0xc2/0x100
[ 78.853444][ C0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 78.859768][ C0] kallsyms_lookup_name+0x7f/0x120
[ 78.864874][ C0] debugfs_write+0x14b/0x2d0
[ 78.869459][ C0] full_proxy_write+0xbd/0x100
[ 78.874223][ C0] __vfs_write+0x67/0xc0
[ 78.878470][ C0] vfs_write+0x18a/0x390
[ 78.882716][ C0] ksys_write+0xd5/0x1b0
[ 78.886951][ C0] __x64_sys_write+0x4c/0x60
[ 78.891540][ C0] do_syscall_64+0xcc/0x3a0
[ 78.896043][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 78.901946][ C0]
[ 78.904274][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 78.911916][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 78.917108][ C0] hrtimer_interrupt+0x22a/0x480
[ 78.922043][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 78.927498][ C0] apic_timer_interrupt+0xf/0x20
[ 78.932430][ C0] native_safe_halt+0xe/0x10
[ 78.937014][ C0] arch_cpu_idle+0xa/0x10
[ 78.941344][ C0] default_idle_call+0x1e/0x40
[ 78.946102][ C0] do_idle+0x1c2/0x290
[ 78.950169][ C0] cpu_startup_entry+0x1b/0x20
[ 78.954923][ C0] rest_init+0xec/0xf6
[ 78.959013][ C0] arch_call_rest_init+0x17/0x37
[ 78.963939][ C0] start_kernel+0x838/0x85e
[ 78.968436][ C0] x86_64_start_reservations+0x29/0x2b
[ 78.973886][ C0] x86_64_start_kernel+0x72/0x76
[ 78.978817][ C0] secondary_startup_64+0xa4/0xb0
[ 78.983878][ C0]
[ 78.986195][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 78.992354][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 79.000389][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 79.010441][ C0] ==================================================================
[ 79.018493][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 79.025078][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 79.032954][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 79.043004][ C0] Call Trace:
[ 79.046283][ C0]
[ 79.049142][ C0] dump_stack+0x11d/0x181
[ 79.053469][ C0] panic+0x210/0x640
[ 79.057365][ C0] ? vprintk_func+0x8d/0x140
[ 79.061952][ C0] kcsan_report.cold+0xc/0xd
[ 79.066541][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 79.071909][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 79.077292][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 79.082489][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 79.088551][ C0] hrtimer_interrupt+0x22a/0x480
[ 79.093483][ C0] ? sched_clock+0x13/0x20
[ 79.097917][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 79.103374][ C0] apic_timer_interrupt+0xf/0x20
[ 79.108297][ C0]
[ 79.111231][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 79.116606][ C0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c e6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c e6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 d2 57 91 fc e8 fd da ab fd 0f
[ 79.136203][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 79.144619][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 79.152599][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 79.160571][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 79.168539][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 79.176505][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 79.184489][ C0] ? debug_smp_processor_id+0x35/0x137
[ 79.189947][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 79.195407][ C0] ? default_idle+0x26/0x180
[ 79.199999][ C0] arch_cpu_idle+0xa/0x10
[ 79.204319][ C0] default_idle_call+0x1e/0x40
[ 79.209080][ C0] do_idle+0x1c2/0x290
[ 79.213141][ C0] ? debug_smp_processor_id+0x43/0x137
[ 79.218596][ C0] cpu_startup_entry+0x1b/0x20
[ 79.223438][ C0] rest_init+0xec/0xf6
[ 79.227503][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 79.234708][ C0] arch_call_rest_init+0x17/0x37
[ 79.239657][ C0] start_kernel+0x838/0x85e
[ 79.244168][ C0] x86_64_start_reservations+0x29/0x2b
[ 79.249625][ C0] x86_64_start_kernel+0x72/0x76
[ 79.254562][ C0] secondary_startup_64+0xa4/0xb0
[ 79.356634][ C0] Kernel Offset: disabled
[ 79.361000][ C0] Rebooting in 86400 seconds..