[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 51.775684][ T27] kauditd_printk_skb: 7 callbacks suppressed
[ 51.775701][ T27] audit: type=1800 audit(1580567084.372:29): pid=7860 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0
[ 51.801782][ T27] audit: type=1800 audit(1580567084.372:30): pid=7860 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 '10.128.10.55' (ECDSA) to the list of known hosts.
2020/02/01 14:24:54 fuzzer started
2020/02/01 14:24:56 dialing manager at 10.128.0.105:40209
2020/02/01 14:24:56 syscalls: 2904
2020/02/01 14:24:56 code coverage: enabled
2020/02/01 14:24:56 comparison tracing: enabled
2020/02/01 14:24:56 extra coverage: enabled
2020/02/01 14:24:56 setuid sandbox: enabled
2020/02/01 14:24:56 namespace sandbox: enabled
2020/02/01 14:24:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/01 14:24:56 fault injection: enabled
2020/02/01 14:24:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/01 14:24:56 net packet injection: enabled
2020/02/01 14:24:56 net device setup: enabled
2020/02/01 14:24:56 concurrency sanitizer: enabled
2020/02/01 14:24:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 66.979276][ T8030] KCSAN: could not find function: 'poll_schedule_timeout'
[ 69.433880][ C0] ==================================================================
[ 69.442031][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 69.449822][ C0]
[ 69.452144][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 69.459708][ C0] hrtimer_active+0x84/0x1a0
[ 69.464291][ C0] task_tick_fair+0x4c/0x910
[ 69.468881][ C0] scheduler_tick+0x5f/0xf0
[ 69.473390][ C0] update_process_times+0x5a/0x80
[ 69.478416][ C0] tick_sched_handle+0x75/0x100
[ 69.483273][ C0] tick_sched_timer+0x58/0xe0
[ 69.487952][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 69.493155][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.498092][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.503549][ C0] apic_timer_interrupt+0xf/0x20
[ 69.508570][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 69.513954][ C0] __tsan_unaligned_write1+0xc3/0x100
[ 69.519444][ C0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 69.525779][ C0] kallsyms_lookup_name+0x7f/0x120
[ 69.530921][ C0] debugfs_write+0x14b/0x2d0
[ 69.535542][ C0] full_proxy_write+0xbd/0x100
[ 69.540300][ C0] __vfs_write+0x67/0xc0
[ 69.544554][ C0] vfs_write+0x18a/0x390
[ 69.548800][ C0] ksys_write+0xd5/0x1b0
[ 69.553043][ C0] __x64_sys_write+0x4c/0x60
[ 69.557634][ C0] do_syscall_64+0xcc/0x3a0
[ 69.562139][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 69.568028][ C0]
[ 69.570358][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 69.577996][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.583186][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.588123][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.593588][ C0] apic_timer_interrupt+0xf/0x20
[ 69.598541][ C0] native_safe_halt+0xe/0x10
[ 69.603137][ C0] arch_cpu_idle+0xa/0x10
[ 69.607469][ C0] default_idle_call+0x1e/0x40
[ 69.612248][ C0] do_idle+0x1c2/0x290
[ 69.616320][ C0] cpu_startup_entry+0x1b/0x20
[ 69.621098][ C0] rest_init+0xec/0xf6
[ 69.625168][ C0] arch_call_rest_init+0x17/0x37
[ 69.630097][ C0] start_kernel+0x838/0x85e
[ 69.634598][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.640067][ C0] x86_64_start_kernel+0x72/0x76
[ 69.645015][ C0] secondary_startup_64+0xa4/0xb0
[ 69.650043][ C0]
[ 69.652361][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 69.658591][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.666482][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.676544][ C0] ==================================================================
[ 69.684614][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 69.691210][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.699106][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.709167][ C0] Call Trace:
[ 69.712457][ C0]
[ 69.715335][ C0] dump_stack+0x11d/0x181
[ 69.719677][ C0] panic+0x210/0x640
[ 69.723590][ C0] ? vprintk_func+0x8d/0x140
[ 69.728200][ C0] kcsan_report.cold+0xc/0xd
[ 69.733763][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 69.739139][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 69.744650][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.749875][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 69.755951][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.760905][ C0] ? sched_clock+0x13/0x20
[ 69.765326][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.770856][ C0] apic_timer_interrupt+0xf/0x20
[ 69.775785][ C0]
[ 69.778740][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 69.784117][ 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
[ 69.803910][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 69.812449][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 69.820436][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 69.828410][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 69.836394][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 69.844366][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 69.852374][ C0] ? debug_smp_processor_id+0x35/0x137
[ 69.857967][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 69.863446][ C0] ? default_idle+0x26/0x180
[ 69.868054][ C0] arch_cpu_idle+0xa/0x10
[ 69.872414][ C0] default_idle_call+0x1e/0x40
[ 69.877205][ C0] do_idle+0x1c2/0x290
[ 69.881282][ C0] ? debug_smp_processor_id+0x43/0x137
[ 69.886748][ C0] cpu_startup_entry+0x1b/0x20
[ 69.891526][ C0] rest_init+0xec/0xf6
[ 69.895603][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 69.902926][ C0] arch_call_rest_init+0x17/0x37
[ 69.907897][ C0] start_kernel+0x838/0x85e
[ 69.912411][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.917888][ C0] x86_64_start_kernel+0x72/0x76
[ 69.922835][ C0] secondary_startup_64+0xa4/0xb0
[ 69.928761][ C0] Kernel Offset: disabled
[ 69.933102][ C0] Rebooting in 86400 seconds..