[ 51.471061][ T26] audit: type=1800 audit(1580782051.799:30): pid=7954 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 '10.128.0.195' (ECDSA) to the list of known hosts.
2020/02/04 02:07:41 fuzzer started
2020/02/04 02:07:43 dialing manager at 10.128.0.105:41149
2020/02/04 02:07:43 syscalls: 2904
2020/02/04 02:07:43 code coverage: enabled
2020/02/04 02:07:43 comparison tracing: enabled
2020/02/04 02:07:43 extra coverage: enabled
2020/02/04 02:07:43 setuid sandbox: enabled
2020/02/04 02:07:43 namespace sandbox: enabled
2020/02/04 02:07:43 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/04 02:07:43 fault injection: enabled
2020/02/04 02:07:43 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/04 02:07:43 net packet injection: enabled
2020/02/04 02:07:43 net device setup: enabled
2020/02/04 02:07:43 concurrency sanitizer: enabled
2020/02/04 02:07:43 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 63.726878][ T0] ==================================================================
[ 63.735489][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 63.744511][ T0]
[ 63.746844][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 0:
[ 63.754552][ T0] tick_do_update_jiffies64+0x100/0x250
[ 63.760138][ T0] tick_sched_do_timer+0xd4/0xe0
[ 63.765092][ T0] tick_sched_timer+0x43/0xe0
[ 63.769799][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 63.775013][ T0] hrtimer_interrupt+0x22a/0x480
[ 63.779964][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.785430][ T0] apic_timer_interrupt+0xf/0x20
[ 63.790389][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 63.795774][ T0] __tsan_read1+0xc2/0x100
[ 63.800204][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 63.806554][ T0] kallsyms_lookup_name+0x7f/0x120
[ 63.811691][ T0] debugfs_write+0x14b/0x2d0
[ 63.816379][ T0] full_proxy_write+0xbd/0x100
[ 63.821154][ T0] __vfs_write+0x67/0xc0
[ 63.825413][ T0] vfs_write+0x18a/0x390
[ 63.829665][ T0] ksys_write+0xd5/0x1b0
[ 63.833931][ T0] __x64_sys_write+0x4c/0x60
[ 63.838543][ T0] do_syscall_64+0xcc/0x3a0
[ 63.843059][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 63.849273][ T0]
[ 63.851709][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 1:
[ 63.860052][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 63.866656][ T0] tick_irq_enter+0x139/0x1c0
[ 63.873017][ T0] irq_enter+0x4f/0x60
[ 63.877398][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 63.883516][ T0] apic_timer_interrupt+0xf/0x20
[ 63.889217][ T0] native_safe_halt+0xe/0x10
[ 63.894474][ T0] arch_cpu_idle+0xa/0x10
[ 63.898994][ T0] default_idle_call+0x1e/0x40
[ 63.904042][ T0] do_idle+0x1c2/0x290
[ 63.908398][ T0] cpu_startup_entry+0x1b/0x20
[ 63.913321][ T0] start_secondary+0x168/0x1b0
[ 63.918211][ T0] secondary_startup_64+0xa4/0xb0
[ 63.923712][ T0]
[ 63.926131][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 63.932619][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.940650][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.951064][ T0] ==================================================================
[ 63.959139][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 63.965884][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.973999][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.985904][ T0] Call Trace:
[ 63.989640][ T0]
[ 63.992586][ T0] dump_stack+0x11d/0x181
[ 63.996943][ T0] panic+0x210/0x640
[ 64.000870][ T0] ? vprintk_func+0x8d/0x140
[ 64.006046][ T0] kcsan_report.cold+0xc/0xd
[ 64.010668][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 64.016130][ T0] __tsan_read8+0xc6/0x100
[ 64.020650][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 64.026131][ T0] tick_irq_enter+0x139/0x1c0
[ 64.030846][ T0] irq_enter+0x4f/0x60
[ 64.034933][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 64.040411][ T0] apic_timer_interrupt+0xf/0x20
[ 64.045399][ T0]
[ 64.048448][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 64.053965][ 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
[ 64.073753][ T0] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 64.082199][ T0] RAX: 0000000000000001 RBX: ffff88812b785040 RCX: ffffffff82546c55
[ 64.090319][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 64.098496][ T0] RBP: ffffc90000cd3e90 R08: ffff88812b785040 R09: 0000ffff85a2d168
[ 64.106623][ T0] R10: 0000c90000cd3e80 R11: 0000ffff85a2d16f R12: 0000000000000001
[ 64.114722][ T0] R13: ffff88812b785040 R14: 0000000000000000 R15: 0000000000000000
[ 64.122854][ T0] ? debug_smp_processor_id+0x35/0x137
[ 64.128335][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 64.134866][ T0] ? default_idle+0x26/0x180
[ 64.139468][ T0] arch_cpu_idle+0xa/0x10
[ 64.143836][ T0] default_idle_call+0x1e/0x40
[ 64.148636][ T0] do_idle+0x1c2/0x290
[ 64.152715][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 64.158315][ T0] cpu_startup_entry+0x1b/0x20
[ 64.163275][ T0] start_secondary+0x168/0x1b0
[ 64.168045][ T0] secondary_startup_64+0xa4/0xb0
[ 64.202244][ T0] Kernel Offset: disabled
[ 64.206623][ T0] Rebooting in 86400 seconds..