[ 53.990730][ T26] audit: type=1800 audit(1580864842.216:30): pid=8034 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.169' (ECDSA) to the list of known hosts.
2020/02/05 01:07:30 fuzzer started
2020/02/05 01:07:32 dialing manager at 10.128.0.105:41149
2020/02/05 01:07:32 syscalls: 2904
2020/02/05 01:07:32 code coverage: enabled
2020/02/05 01:07:32 comparison tracing: enabled
2020/02/05 01:07:32 extra coverage: enabled
2020/02/05 01:07:32 setuid sandbox: enabled
2020/02/05 01:07:32 namespace sandbox: enabled
2020/02/05 01:07:32 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 01:07:32 fault injection: enabled
2020/02/05 01:07:32 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 01:07:32 net packet injection: enabled
2020/02/05 01:07:32 net device setup: enabled
2020/02/05 01:07:32 concurrency sanitizer: enabled
2020/02/05 01:07:32 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 66.231368][ T8200] KCSAN: could not find function: 'decode_data'
[ 72.056027][ T8200] KCSAN: could not find function: 'poll_schedule_timeout'
[ 79.210634][ T0] ==================================================================
[ 79.219100][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 79.228037][ T0]
[ 79.230379][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 1:
[ 79.238066][ T0] tick_do_update_jiffies64+0x100/0x250
[ 79.243638][ T0] tick_sched_do_timer+0xd4/0xe0
[ 79.248579][ T0] tick_sched_timer+0x43/0xe0
[ 79.253278][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 79.258601][ T0] hrtimer_interrupt+0x22a/0x480
[ 79.263560][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 79.269042][ T0] apic_timer_interrupt+0xf/0x20
[ 79.273992][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 79.279385][ T0] __tsan_unaligned_write1+0xc3/0x100
[ 79.284784][ T0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 79.291150][ T0] kallsyms_lookup_name+0x7f/0x120
[ 79.296360][ T0] debugfs_write+0x14b/0x2d0
[ 79.300969][ T0] full_proxy_write+0xbd/0x100
[ 79.305746][ T0] __vfs_write+0x67/0xc0
[ 79.310010][ T0] vfs_write+0x18a/0x390
[ 79.314259][ T0] ksys_write+0xd5/0x1b0
[ 79.318511][ T0] __x64_sys_write+0x4c/0x60
[ 79.323235][ T0] do_syscall_64+0xcc/0x3a0
[ 79.327740][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 79.333637][ T0]
[ 79.335971][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 0:
[ 79.343283][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 79.349128][ T0] tick_irq_enter+0x139/0x1c0
[ 79.353831][ T0] irq_enter+0x4f/0x60
[ 79.357921][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 79.363388][ T0] apic_timer_interrupt+0xf/0x20
[ 79.368342][ T0] native_safe_halt+0xe/0x10
[ 79.372958][ T0] arch_cpu_idle+0xa/0x10
[ 79.377425][ T0] default_idle_call+0x1e/0x40
[ 79.382209][ T0] do_idle+0x1c2/0x290
[ 79.387463][ T0] cpu_startup_entry+0x1b/0x20
[ 79.392260][ T0] rest_init+0xec/0xf6
[ 79.396349][ T0] arch_call_rest_init+0x17/0x37
[ 79.401286][ T0] start_kernel+0x838/0x85e
[ 79.405807][ T0] x86_64_start_reservations+0x29/0x2b
[ 79.411294][ T0] x86_64_start_kernel+0x72/0x76
[ 79.416274][ T0] secondary_startup_64+0xa4/0xb0
[ 79.422007][ T0]
[ 79.424386][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 79.430728][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 79.438643][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 79.448731][ T0] ==================================================================
[ 79.456847][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 79.463487][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 79.471467][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 79.481536][ T0] Call Trace:
[ 79.484817][ T0]
[ 79.487709][ T0] dump_stack+0x11d/0x181
[ 79.492063][ T0] panic+0x210/0x640
[ 79.495996][ T0] ? vprintk_func+0x8d/0x140
[ 79.500602][ T0] kcsan_report.cold+0xc/0xd
[ 79.505204][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 79.510586][ T0] __tsan_read8+0xc6/0x100
[ 79.515045][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 79.520541][ T0] tick_irq_enter+0x139/0x1c0
[ 79.525222][ T0] irq_enter+0x4f/0x60
[ 79.529307][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 79.535309][ T0] apic_timer_interrupt+0xf/0x20
[ 79.540253][ T0]
[ 79.543374][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 79.548770][ T0] 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
[ 79.568735][ T0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 79.577368][ T0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 79.585487][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 79.593479][ T0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 79.601578][ T0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 79.609690][ T0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 79.617730][ T0] ? debug_smp_processor_id+0x35/0x137
[ 79.623211][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 79.628695][ T0] ? default_idle+0x26/0x180
[ 79.633315][ T0] arch_cpu_idle+0xa/0x10
[ 79.637660][ T0] default_idle_call+0x1e/0x40
[ 79.642441][ T0] do_idle+0x1c2/0x290
[ 79.646516][ T0] ? debug_smp_processor_id+0x43/0x137
[ 79.652002][ T0] cpu_startup_entry+0x1b/0x20
[ 79.656781][ T0] rest_init+0xec/0xf6
[ 79.660869][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 79.668092][ T0] arch_call_rest_init+0x17/0x37
[ 79.673051][ T0] start_kernel+0x838/0x85e
[ 79.677706][ T0] x86_64_start_reservations+0x29/0x2b
[ 79.683191][ T0] x86_64_start_kernel+0x72/0x76
[ 79.688149][ T0] secondary_startup_64+0xa4/0xb0
[ 79.921045][ T0] Kernel Offset: disabled
[ 79.925616][ T0] Rebooting in 86400 seconds..