[ 55.135876][ T27] audit: type=1800 audit(1580901732.842:30): pid=7941 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 '10.128.15.205' (ECDSA) to the list of known hosts.
2020/02/05 11:22:24 fuzzer started
2020/02/05 11:22:26 dialing manager at 10.128.0.105:41149
2020/02/05 11:22:26 syscalls: 2904
2020/02/05 11:22:26 code coverage: enabled
2020/02/05 11:22:26 comparison tracing: enabled
2020/02/05 11:22:26 extra coverage: enabled
2020/02/05 11:22:26 setuid sandbox: enabled
2020/02/05 11:22:26 namespace sandbox: enabled
2020/02/05 11:22:26 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 11:22:26 fault injection: enabled
2020/02/05 11:22:26 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 11:22:26 net packet injection: enabled
2020/02/05 11:22:26 net device setup: enabled
2020/02/05 11:22:26 concurrency sanitizer: enabled
2020/02/05 11:22:26 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 69.851174][ T8106] KCSAN: could not find function: 'poll_schedule_timeout'
[ 76.753760][ C0] ==================================================================
[ 76.761922][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 76.769629][ C0]
[ 76.772057][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 76.779644][ C0] hrtimer_active+0x84/0x1a0
[ 76.784241][ C0] task_tick_fair+0x4c/0x910
[ 76.788825][ C0] scheduler_tick+0x5f/0xf0
[ 76.793351][ C0] update_process_times+0x5a/0x80
[ 76.798478][ C0] tick_sched_handle+0x75/0x100
[ 76.803484][ C0] tick_sched_timer+0x58/0xe0
[ 76.808182][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 76.814084][ C0] hrtimer_interrupt+0x22a/0x480
[ 76.819039][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 76.824500][ C0] apic_timer_interrupt+0xf/0x20
[ 76.829440][ C0] __tsan_read1+0x30/0x100
[ 76.833865][ C0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 76.840212][ C0] kallsyms_lookup_name+0x7f/0x120
[ 76.845327][ C0] debugfs_write+0x14b/0x2d0
[ 76.849933][ C0] full_proxy_write+0xbd/0x100
[ 76.854703][ C0] __vfs_write+0x67/0xc0
[ 76.858962][ C0] vfs_write+0x18a/0x390
[ 76.863226][ C0] ksys_write+0xd5/0x1b0
[ 76.867487][ C0] __x64_sys_write+0x4c/0x60
[ 76.872098][ C0] do_syscall_64+0xcc/0x3a0
[ 76.876606][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 76.882489][ C0]
[ 76.884845][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 76.892495][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 76.897703][ C0] hrtimer_interrupt+0x22a/0x480
[ 76.902674][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 76.909172][ C0] apic_timer_interrupt+0xf/0x20
[ 76.914121][ C0] native_safe_halt+0xe/0x10
[ 76.918744][ C0] arch_cpu_idle+0xa/0x10
[ 76.923085][ C0] default_idle_call+0x1e/0x40
[ 76.927858][ C0] do_idle+0x1c2/0x290
[ 76.931926][ C0] cpu_startup_entry+0x1b/0x20
[ 76.936853][ C0] rest_init+0xec/0xf6
[ 76.940934][ C0] arch_call_rest_init+0x17/0x37
[ 76.945874][ C0] start_kernel+0x838/0x85e
[ 76.950398][ C0] x86_64_start_reservations+0x29/0x2b
[ 76.955871][ C0] x86_64_start_kernel+0x72/0x76
[ 76.960824][ C0] secondary_startup_64+0xa4/0xb0
[ 76.965839][ C0]
[ 76.968162][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 76.974556][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 76.982456][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 76.992519][ C0] ==================================================================
[ 77.001806][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 77.008405][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 77.016311][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 77.026559][ C0] Call Trace:
[ 77.029845][ C0]
[ 77.032756][ C0] dump_stack+0x11d/0x181
[ 77.037098][ C0] panic+0x210/0x640
[ 77.041027][ C0] ? vprintk_func+0x8d/0x140
[ 77.045629][ C0] kcsan_report.cold+0xc/0xd
[ 77.050240][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 77.055799][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 77.061197][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 77.066437][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 77.072523][ C0] hrtimer_interrupt+0x22a/0x480
[ 77.077495][ C0] ? sched_clock+0x13/0x20
[ 77.081958][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 77.087438][ C0] apic_timer_interrupt+0xf/0x20
[ 77.092366][ C0]
[ 77.095323][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 77.100712][ 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
[ 77.120324][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 77.128859][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 77.136851][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 77.144832][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 77.152814][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 77.160795][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 77.168811][ C0] ? debug_smp_processor_id+0x35/0x137
[ 77.174284][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 77.179761][ C0] ? default_idle+0x26/0x180
[ 77.184387][ C0] arch_cpu_idle+0xa/0x10
[ 77.188729][ C0] default_idle_call+0x1e/0x40
[ 77.193510][ C0] do_idle+0x1c2/0x290
[ 77.197595][ C0] ? debug_smp_processor_id+0x43/0x137
[ 77.203074][ C0] cpu_startup_entry+0x1b/0x20
[ 77.207878][ C0] rest_init+0xec/0xf6
[ 77.211961][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 77.219257][ C0] arch_call_rest_init+0x17/0x37
[ 77.224210][ C0] start_kernel+0x838/0x85e
[ 77.228728][ C0] x86_64_start_reservations+0x29/0x2b
[ 77.234199][ C0] x86_64_start_kernel+0x72/0x76
[ 77.239148][ C0] secondary_startup_64+0xa4/0xb0
[ 77.356697][ C0] Kernel Offset: disabled
[ 77.361115][ C0] Rebooting in 86400 seconds..