[ 54.612934][ T27] audit: type=1800 audit(1580672378.386:30): pid=7904 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 '10.128.0.167' (ECDSA) to the list of known hosts.
2020/02/02 19:39:50 fuzzer started
2020/02/02 19:39:52 dialing manager at 10.128.0.105:41149
2020/02/02 19:39:52 syscalls: 2904
2020/02/02 19:39:52 code coverage: enabled
2020/02/02 19:39:52 comparison tracing: enabled
2020/02/02 19:39:52 extra coverage: enabled
2020/02/02 19:39:52 setuid sandbox: enabled
2020/02/02 19:39:52 namespace sandbox: enabled
2020/02/02 19:39:52 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/02 19:39:52 fault injection: enabled
2020/02/02 19:39:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/02 19:39:52 net packet injection: enabled
2020/02/02 19:39:52 net device setup: enabled
2020/02/02 19:39:52 concurrency sanitizer: enabled
2020/02/02 19:39:52 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 69.422192][ C0] ==================================================================
[ 69.430557][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 69.438277][ C0]
[ 69.440623][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 69.448708][ C0] hrtimer_active+0x84/0x1a0
[ 69.453324][ C0] task_tick_fair+0x4c/0x910
[ 69.458220][ C0] scheduler_tick+0x5f/0xf0
[ 69.462767][ C0] update_process_times+0x5a/0x80
[ 69.467816][ C0] tick_sched_handle+0x75/0x100
[ 69.472720][ C0] tick_sched_timer+0x58/0xe0
[ 69.477422][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 69.482659][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.487609][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.493074][ C0] apic_timer_interrupt+0xf/0x20
[ 69.498027][ C0] __tsan_read1+0x8a/0x100
[ 69.502488][ C0] strcmp+0x2b/0x70
[ 69.506305][ C0] kallsyms_lookup_name+0x91/0x120
[ 69.511432][ C0] debugfs_write+0x14b/0x2d0
[ 69.516042][ C0] full_proxy_write+0xbd/0x100
[ 69.520815][ C0] __vfs_write+0x67/0xc0
[ 69.525066][ C0] vfs_write+0x18a/0x390
[ 69.529309][ C0] ksys_write+0xd5/0x1b0
[ 69.533565][ C0] __x64_sys_write+0x4c/0x60
[ 69.538174][ C0] do_syscall_64+0xcc/0x3a0
[ 69.542684][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 69.548570][ C0]
[ 69.550906][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 69.558656][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.563865][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.568819][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.574292][ C0] apic_timer_interrupt+0xf/0x20
[ 69.579244][ C0] native_safe_halt+0xe/0x10
[ 69.583856][ C0] arch_cpu_idle+0xa/0x10
[ 69.588624][ C0] default_idle_call+0x1e/0x40
[ 69.593409][ C0] do_idle+0x1c2/0x290
[ 69.597501][ C0] cpu_startup_entry+0x1b/0x20
[ 69.602266][ C0] rest_init+0xec/0xf6
[ 69.606451][ C0] arch_call_rest_init+0x17/0x37
[ 69.611516][ C0] start_kernel+0x838/0x85e
[ 69.616048][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.621525][ C0] x86_64_start_kernel+0x72/0x76
[ 69.626474][ C0] secondary_startup_64+0xa4/0xb0
[ 69.631512][ C0]
[ 69.633832][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 69.639981][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.647871][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.658074][ C0] ==================================================================
[ 69.666156][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 69.672753][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.680649][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.690716][ C0] Call Trace:
[ 69.694014][ C0]
[ 69.696880][ C0] dump_stack+0x11d/0x181
[ 69.701482][ C0] panic+0x210/0x640
[ 69.705403][ C0] ? vprintk_func+0x8d/0x140
[ 69.710135][ C0] kcsan_report.cold+0xc/0xd
[ 69.714750][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 69.720147][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 69.725545][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.730762][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 69.736890][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.741845][ C0] ? sched_clock+0x13/0x20
[ 69.746278][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.751770][ C0] apic_timer_interrupt+0xf/0x20
[ 69.756724][ C0]
[ 69.759670][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 69.765179][ 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
[ 69.784900][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 69.793330][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 69.801305][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 69.809402][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 69.817395][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 69.825483][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 69.833492][ C0] ? debug_smp_processor_id+0x35/0x137
[ 69.839788][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 69.845315][ C0] ? default_idle+0x26/0x180
[ 69.850017][ C0] arch_cpu_idle+0xa/0x10
[ 69.854491][ C0] default_idle_call+0x1e/0x40
[ 69.859308][ C0] do_idle+0x1c2/0x290
[ 69.863379][ C0] ? debug_smp_processor_id+0x43/0x137
[ 69.868849][ C0] cpu_startup_entry+0x1b/0x20
[ 69.874956][ C0] rest_init+0xec/0xf6
[ 69.879079][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 69.886383][ C0] arch_call_rest_init+0x17/0x37
[ 69.891347][ C0] start_kernel+0x838/0x85e
[ 69.895872][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.901358][ C0] x86_64_start_kernel+0x72/0x76
[ 69.906319][ C0] secondary_startup_64+0xa4/0xb0
[ 69.912847][ C0] Kernel Offset: disabled
[ 69.917339][ C0] Rebooting in 86400 seconds..