[ 61.703339][ T26] audit: type=1800 audit(1581053832.613:30): pid=7850 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 '10.128.1.21' (ECDSA) to the list of known hosts.
2020/02/07 05:37:24 fuzzer started
2020/02/07 05:37:27 dialing manager at 10.128.0.105:33727
2020/02/07 05:37:27 syscalls: 2904
2020/02/07 05:37:27 code coverage: enabled
2020/02/07 05:37:27 comparison tracing: enabled
2020/02/07 05:37:27 extra coverage: enabled
2020/02/07 05:37:27 setuid sandbox: enabled
2020/02/07 05:37:27 namespace sandbox: enabled
2020/02/07 05:37:27 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/07 05:37:27 fault injection: enabled
2020/02/07 05:37:27 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/07 05:37:27 net packet injection: enabled
2020/02/07 05:37:27 net device setup: enabled
2020/02/07 05:37:27 concurrency sanitizer: enabled
2020/02/07 05:37:27 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 80.596403][ T8022] KCSAN: could not find function: 'common_perm_create'
[ 81.889347][ C0] ==================================================================
[ 81.897499][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 81.905218][ C0]
[ 81.907561][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 81.915115][ C0] hrtimer_active+0x84/0x1a0
[ 81.919714][ C0] task_tick_fair+0x4c/0x910
[ 81.924305][ C0] scheduler_tick+0x5f/0xf0
[ 81.928827][ C0] update_process_times+0x5a/0x80
[ 81.933859][ C0] tick_sched_handle+0x75/0x100
[ 81.938832][ C0] tick_sched_timer+0x58/0xe0
[ 81.943519][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 81.948726][ C0] hrtimer_interrupt+0x22a/0x480
[ 81.953674][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 81.959333][ C0] apic_timer_interrupt+0xf/0x20
[ 81.964291][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 81.969680][ C0] __tsan_unaligned_write1+0xc3/0x100
[ 81.975057][ C0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 81.981392][ C0] kallsyms_lookup_name+0x7f/0x120
[ 81.986519][ C0] debugfs_write+0x14b/0x2d0
[ 81.991119][ C0] full_proxy_write+0xbd/0x100
[ 81.995896][ C0] __vfs_write+0x67/0xc0
[ 82.000150][ C0] vfs_write+0x18a/0x390
[ 82.004405][ C0] ksys_write+0xd5/0x1b0
[ 82.008649][ C0] __x64_sys_write+0x4c/0x60
[ 82.013248][ C0] do_syscall_64+0xcc/0x3a0
[ 82.017765][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 82.023654][ C0]
[ 82.026004][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 82.033659][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 82.038865][ C0] hrtimer_interrupt+0x22a/0x480
[ 82.043817][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 82.049411][ C0] apic_timer_interrupt+0xf/0x20
[ 82.054354][ C0] native_safe_halt+0xe/0x10
[ 82.058950][ C0] arch_cpu_idle+0xa/0x10
[ 82.063296][ C0] default_idle_call+0x1e/0x40
[ 82.068064][ C0] do_idle+0x1c2/0x290
[ 82.072140][ C0] cpu_startup_entry+0x1b/0x20
[ 82.076913][ C0] rest_init+0xec/0xf6
[ 82.080989][ C0] arch_call_rest_init+0x17/0x37
[ 82.085931][ C0] start_kernel+0x838/0x85e
[ 82.090443][ C0] x86_64_start_reservations+0x29/0x2b
[ 82.095910][ C0] x86_64_start_kernel+0x72/0x76
[ 82.100868][ C0] secondary_startup_64+0xa4/0xb0
[ 82.105881][ C0]
[ 82.108209][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 82.114374][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 82.122265][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 82.132442][ C0] ==================================================================
[ 82.140503][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 82.147223][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 82.155221][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 82.165280][ C0] Call Trace:
[ 82.168560][ C0]
[ 82.171425][ C0] dump_stack+0x11d/0x181
[ 82.175774][ C0] panic+0x210/0x640
[ 82.179678][ C0] ? vprintk_func+0x8d/0x140
[ 82.184383][ C0] kcsan_report.cold+0xc/0xd
[ 82.188999][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 82.194393][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 82.199779][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 82.205026][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 82.211108][ C0] hrtimer_interrupt+0x22a/0x480
[ 82.216065][ C0] ? sched_clock+0x13/0x20
[ 82.220492][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 82.226075][ C0] apic_timer_interrupt+0xf/0x20
[ 82.231121][ C0]
[ 82.234187][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 82.239577][ 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
[ 82.259190][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 82.267643][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 82.275759][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 82.283803][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 82.291886][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 82.299875][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 82.307873][ C0] ? debug_smp_processor_id+0x35/0x137
[ 82.313345][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 82.318832][ C0] ? default_idle+0x26/0x180
[ 82.323436][ C0] arch_cpu_idle+0xa/0x10
[ 82.327781][ C0] default_idle_call+0x1e/0x40
[ 82.332550][ C0] do_idle+0x1c2/0x290
[ 82.336627][ C0] ? debug_smp_processor_id+0x43/0x137
[ 82.342103][ C0] cpu_startup_entry+0x1b/0x20
[ 82.346917][ C0] rest_init+0xec/0xf6
[ 82.351002][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 82.358212][ C0] arch_call_rest_init+0x17/0x37
[ 82.363283][ C0] start_kernel+0x838/0x85e
[ 82.367804][ C0] x86_64_start_reservations+0x29/0x2b
[ 82.373280][ C0] x86_64_start_kernel+0x72/0x76
[ 82.378255][ C0] secondary_startup_64+0xa4/0xb0
[ 82.384866][ C0] Kernel Offset: disabled
[ 82.389204][ C0] Rebooting in 86400 seconds..