[ 65.832443][ T27] audit: type=1800 audit(1580894203.121:23): pid=7836 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rsyslog" dev="sda1" ino=2475 res=0
[ 65.852374][ T27] audit: type=1800 audit(1580894203.121:24): pid=7836 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2487 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 66.600535][ T27] audit: type=1800 audit(1580894203.991:25): pid=7836 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0
[....] 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.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.102' (ECDSA) to the list of known hosts.
2020/02/05 09:16:53 fuzzer started
2020/02/05 09:16:55 dialing manager at 10.128.0.105:41149
2020/02/05 09:16:56 syscalls: 2904
2020/02/05 09:16:56 code coverage: enabled
2020/02/05 09:16:56 comparison tracing: enabled
2020/02/05 09:16:56 extra coverage: enabled
2020/02/05 09:16:56 setuid sandbox: enabled
2020/02/05 09:16:56 namespace sandbox: enabled
2020/02/05 09:16:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 09:16:56 fault injection: enabled
2020/02/05 09:16:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 09:16:56 net packet injection: enabled
2020/02/05 09:16:56 net device setup: enabled
2020/02/05 09:16:56 concurrency sanitizer: enabled
2020/02/05 09:16:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 80.841529][ T8007] KCSAN: could not find function: 'poll_schedule_timeout'
[ 89.686668][ T0] ==================================================================
[ 89.694836][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 89.703760][ T0]
[ 89.706090][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 0:
[ 89.713729][ T0] tick_do_update_jiffies64+0x100/0x250
[ 89.719278][ T0] tick_sched_do_timer+0xd4/0xe0
[ 89.724230][ T0] tick_sched_timer+0x43/0xe0
[ 89.728924][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 89.734380][ T0] hrtimer_interrupt+0x22a/0x480
[ 89.739322][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 89.745091][ T0] apic_timer_interrupt+0xf/0x20
[ 89.750044][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 89.755426][ T0] __tsan_read1+0xc2/0x100
[ 89.759862][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 89.766214][ T0] kallsyms_lookup_name+0x7f/0x120
[ 89.771336][ T0] debugfs_write+0x14b/0x2d0
[ 89.775929][ T0] full_proxy_write+0xbd/0x100
[ 89.780845][ T0] __vfs_write+0x67/0xc0
[ 89.785237][ T0] vfs_write+0x18a/0x390
[ 89.789482][ T0] ksys_write+0xd5/0x1b0
[ 89.793743][ T0] __x64_sys_write+0x4c/0x60
[ 89.798338][ T0] do_syscall_64+0xcc/0x3a0
[ 89.802845][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 89.808729][ T0]
[ 89.811086][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 1:
[ 89.818388][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 89.823867][ T0] tick_irq_enter+0x139/0x1c0
[ 89.828554][ T0] irq_enter+0x4f/0x60
[ 89.832647][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 89.838118][ T0] apic_timer_interrupt+0xf/0x20
[ 89.843065][ T0] native_safe_halt+0xe/0x10
[ 89.847669][ T0] arch_cpu_idle+0xa/0x10
[ 89.852002][ T0] default_idle_call+0x1e/0x40
[ 89.856771][ T0] do_idle+0x1c2/0x290
[ 89.860844][ T0] cpu_startup_entry+0x1b/0x20
[ 89.865646][ T0] start_secondary+0x168/0x1b0
[ 89.870430][ T0] secondary_startup_64+0xa4/0xb0
[ 89.875443][ T0]
[ 89.877772][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 89.884027][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 89.892006][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 89.902069][ T0] ==================================================================
[ 89.910167][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 89.916784][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 89.924678][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 89.934731][ T0] Call Trace:
[ 89.938149][ T0]
[ 89.941027][ T0] dump_stack+0x11d/0x181
[ 89.945367][ T0] panic+0x210/0x640
[ 89.949286][ T0] ? vprintk_func+0x8d/0x140
[ 89.953922][ T0] kcsan_report.cold+0xc/0xd
[ 89.958521][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 89.963962][ T0] __tsan_read8+0xc6/0x100
[ 89.968395][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 89.973886][ T0] tick_irq_enter+0x139/0x1c0
[ 89.978577][ T0] irq_enter+0x4f/0x60
[ 89.982657][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 89.988139][ T0] apic_timer_interrupt+0xf/0x20
[ 89.993070][ T0]
[ 89.996029][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 90.001415][ T0] 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
[ 90.021032][ T0] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 90.029452][ T0] RAX: 0000000000000001 RBX: ffff88812b785040 RCX: ffffffff82546c55
[ 90.037525][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 90.045514][ T0] RBP: ffffc90000cd3e90 R08: ffff88812b785040 R09: 0000ffff85a2d168
[ 90.053486][ T0] R10: 0000c90000cd3e80 R11: 0000ffff85a2d16f R12: 0000000000000001
[ 90.061556][ T0] R13: ffff88812b785040 R14: 0000000000000000 R15: 0000000000000000
[ 90.069578][ T0] ? debug_smp_processor_id+0x35/0x137
[ 90.075051][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 90.080534][ T0] ? default_idle+0x26/0x180
[ 90.085159][ T0] arch_cpu_idle+0xa/0x10
[ 90.089511][ T0] default_idle_call+0x1e/0x40
[ 90.094302][ T0] do_idle+0x1c2/0x290
[ 90.098390][ T0] ? complete+0x44/0x50
[ 90.102569][ T0] cpu_startup_entry+0x1b/0x20
[ 90.107349][ T0] start_secondary+0x168/0x1b0
[ 90.112149][ T0] secondary_startup_64+0xa4/0xb0
[ 90.318174][ T0] Kernel Offset: disabled
[ 90.322661][ T0] Rebooting in 86400 seconds..