[....] 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.
[ 50.627847][ T27] kauditd_printk_skb: 7 callbacks suppressed
[ 50.627863][ T27] audit: type=1800 audit(1580666879.675:29): pid=7948 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
[ 50.654108][ T27] audit: type=1800 audit(1580666879.675:30): pid=7948 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 '10.128.10.6' (ECDSA) to the list of known hosts.
2020/02/02 18:08:11 fuzzer started
2020/02/02 18:08:12 dialing manager at 10.128.0.105:41149
2020/02/02 18:08:13 syscalls: 2904
2020/02/02 18:08:13 code coverage: enabled
2020/02/02 18:08:13 comparison tracing: enabled
2020/02/02 18:08:13 extra coverage: enabled
2020/02/02 18:08:13 setuid sandbox: enabled
2020/02/02 18:08:13 namespace sandbox: enabled
2020/02/02 18:08:13 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/02 18:08:13 fault injection: enabled
2020/02/02 18:08:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/02 18:08:13 net packet injection: enabled
2020/02/02 18:08:13 net device setup: enabled
2020/02/02 18:08:13 concurrency sanitizer: enabled
2020/02/02 18:08:13 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 64.723415][ T8118] KCSAN: could not find function: 'decode_data'
[ 69.337549][ C0] ==================================================================
[ 69.345705][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 69.353418][ C0]
[ 69.355782][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 69.364675][ C0] hrtimer_active+0x84/0x1a0
[ 69.369380][ C0] task_tick_fair+0x4c/0x910
[ 69.374093][ C0] scheduler_tick+0x5f/0xf0
[ 69.378653][ C0] update_process_times+0x5a/0x80
[ 69.383698][ C0] tick_sched_handle+0x75/0x100
[ 69.388551][ C0] tick_sched_timer+0x58/0xe0
[ 69.393795][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 69.399006][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.403954][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.409432][ C0] apic_timer_interrupt+0xf/0x20
[ 69.414404][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 69.419797][ C0] __tsan_read1+0xc2/0x100
[ 69.424226][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 69.430651][ C0] kallsyms_lookup_name+0x7f/0x120
[ 69.435762][ C0] debugfs_write+0x14b/0x2d0
[ 69.440439][ C0] full_proxy_write+0xbd/0x100
[ 69.445228][ C0] __vfs_write+0x67/0xc0
[ 69.449468][ C0] vfs_write+0x18a/0x390
[ 69.453727][ C0] ksys_write+0xd5/0x1b0
[ 69.457980][ C0] __x64_sys_write+0x4c/0x60
[ 69.462578][ C0] do_syscall_64+0xcc/0x3a0
[ 69.467108][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 69.472998][ C0]
[ 69.475775][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 69.483512][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.488727][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.493682][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.499147][ C0] apic_timer_interrupt+0xf/0x20
[ 69.504432][ C0] native_safe_halt+0xe/0x10
[ 69.509043][ C0] arch_cpu_idle+0xa/0x10
[ 69.513375][ C0] default_idle_call+0x1e/0x40
[ 69.518176][ C0] do_idle+0x1c2/0x290
[ 69.522258][ C0] cpu_startup_entry+0x1b/0x20
[ 69.527034][ C0] rest_init+0xec/0xf6
[ 69.531105][ C0] arch_call_rest_init+0x17/0x37
[ 69.536191][ C0] start_kernel+0x838/0x85e
[ 69.540705][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.546296][ C0] x86_64_start_kernel+0x72/0x76
[ 69.551247][ C0] secondary_startup_64+0xa4/0xb0
[ 69.556270][ C0]
[ 69.558601][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 69.564772][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.572878][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.583025][ C0] ==================================================================
[ 69.591083][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 69.597688][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.605594][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.615742][ C0] Call Trace:
[ 69.619120][ C0]
[ 69.621986][ C0] dump_stack+0x11d/0x181
[ 69.626339][ C0] panic+0x210/0x640
[ 69.630245][ C0] ? vprintk_func+0x8d/0x140
[ 69.634840][ C0] kcsan_report.cold+0xc/0xd
[ 69.639436][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 69.644832][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 69.650241][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 69.655542][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 69.661713][ C0] hrtimer_interrupt+0x22a/0x480
[ 69.666675][ C0] ? sched_clock+0x13/0x20
[ 69.671103][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.676596][ C0] apic_timer_interrupt+0xf/0x20
[ 69.681524][ C0]
[ 69.684577][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 69.689963][ 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
[ 69.710111][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 69.718535][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 69.726623][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 69.734606][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 69.742579][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 69.750551][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 69.760196][ C0] ? debug_smp_processor_id+0x35/0x137
[ 69.765722][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 69.771634][ C0] ? default_idle+0x26/0x180
[ 69.776233][ C0] arch_cpu_idle+0xa/0x10
[ 69.780592][ C0] default_idle_call+0x1e/0x40
[ 69.785363][ C0] do_idle+0x1c2/0x290
[ 69.789441][ C0] ? debug_smp_processor_id+0x43/0x137
[ 69.795028][ C0] cpu_startup_entry+0x1b/0x20
[ 69.799789][ C0] rest_init+0xec/0xf6
[ 69.803875][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 69.811097][ C0] arch_call_rest_init+0x17/0x37
[ 69.816037][ C0] start_kernel+0x838/0x85e
[ 69.820750][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.826225][ C0] x86_64_start_kernel+0x72/0x76
[ 69.831182][ C0] secondary_startup_64+0xa4/0xb0
[ 69.837626][ C0] Kernel Offset: disabled
[ 69.841959][ C0] Rebooting in 86400 seconds..