[ 33.742329][ T23] audit: type=1800 audit(1571902743.451:25): pid=7071 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0
[ 33.769365][ T23] audit: type=1800 audit(1571902743.451:26): pid=7071 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0
[ 33.809587][ T23] audit: type=1800 audit(1571902743.451:27): pid=7071 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 34.303188][ T7137] sshd (7137) used greatest stack depth: 10136 bytes left
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.136' (ECDSA) to the list of known hosts.
2019/10/24 07:39:12 fuzzer started
2019/10/24 07:39:13 dialing manager at 10.128.0.105:42135
2019/10/24 07:39:13 checking machine...
2019/10/24 07:39:13 checking revisions...
2019/10/24 07:39:13 testing simple program...
syzkaller login: [ 44.429210][ T7242] IPVS: ftp: loaded support on port[0] = 21
2019/10/24 07:39:14 building call list...
executing program
[ 48.247484][ T7237] can: request_module (can-proto-0) failed.
[ 48.260533][ T7237] can: request_module (can-proto-0) failed.
[ 50.786231][ C1] ==================================================================
[ 50.794339][ C1] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer
[ 50.802376][ C1]
[ 50.804686][ C1] write to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 0:
[ 50.812294][ C1] tick_sched_do_timer+0xc0/0xe0
[ 50.817222][ C1] tick_sched_timer+0x43/0xe0
[ 50.821876][ C1] __hrtimer_run_queues+0x288/0x600
[ 50.827047][ C1] hrtimer_interrupt+0x22a/0x480
[ 50.831974][ C1] smp_apic_timer_interrupt+0xdc/0x280
[ 50.837407][ C1] apic_timer_interrupt+0xf/0x20
[ 50.842335][ C1] native_safe_halt+0xe/0x10
[ 50.846919][ C1] arch_cpu_idle+0x1f/0x30
[ 50.851320][ C1] default_idle_call+0x1e/0x40
[ 50.856063][ C1] do_idle+0x1af/0x280
[ 50.860111][ C1] cpu_startup_entry+0x1b/0x20
[ 50.864851][ C1] rest_init+0xec/0xf6
[ 50.868896][ C1] arch_call_rest_init+0x17/0x37
[ 50.873807][ C1] start_kernel+0x838/0x85e
[ 50.878290][ C1]
[ 50.880596][ C1] read to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 1:
[ 50.888117][ C1] tick_sched_do_timer+0x33/0xe0
[ 50.893031][ C1] tick_sched_timer+0x43/0xe0
[ 50.897693][ C1] __hrtimer_run_queues+0x288/0x600
[ 50.903487][ C1] hrtimer_interrupt+0x22a/0x480
[ 50.908447][ C1] smp_apic_timer_interrupt+0xdc/0x280
[ 50.913888][ C1] apic_timer_interrupt+0xf/0x20
[ 50.918893][ C1] native_safe_halt+0xe/0x10
[ 50.923500][ C1] arch_cpu_idle+0x1f/0x30
[ 50.927893][ C1] default_idle_call+0x1e/0x40
[ 50.932631][ C1] do_idle+0x1af/0x280
[ 50.936674][ C1] cpu_startup_entry+0x1b/0x20
[ 50.941444][ C1] start_secondary+0x208/0x260
[ 50.946187][ C1] secondary_startup_64+0xa4/0xb0
[ 50.951187][ C1]
[ 50.953504][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 50.959633][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc3+ #0
[ 50.966713][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 50.976743][ C1] ==================================================================
[ 50.984789][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 50.991351][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc3+ #0
[ 50.998429][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 51.008458][ C1] Call Trace:
[ 51.011718][ C1]
[ 51.014566][ C1] dump_stack+0xf5/0x159
[ 51.018799][ C1] panic+0x210/0x640
[ 51.022674][ C1] ? default_idle_call+0x1e/0x40
[ 51.027586][ C1] ? vprintk_func+0x8d/0x140
[ 51.032154][ C1] kcsan_report.cold+0xc/0x10
[ 51.036808][ C1] __kcsan_setup_watchpoint+0x32e/0x4a0
[ 51.042347][ C1] __tsan_read4+0x2c/0x30
[ 51.046661][ C1] tick_sched_do_timer+0x33/0xe0
[ 51.051580][ C1] tick_sched_timer+0x43/0xe0
[ 51.056243][ C1] __hrtimer_run_queues+0x288/0x600
[ 51.061422][ C1] ? tick_sched_do_timer+0xe0/0xe0
[ 51.066525][ C1] hrtimer_interrupt+0x22a/0x480
[ 51.071446][ C1] smp_apic_timer_interrupt+0xdc/0x280
[ 51.076880][ C1] ? do_IRQ+0xcb/0x180
[ 51.080926][ C1] apic_timer_interrupt+0xf/0x20
[ 51.085834][ C1]
[ 51.088752][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 51.094123][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d fc b2 4b 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec b2 4b 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 72 12 a4 fc e8 6d 8e b8 fd 0f
[ 51.113713][ C1] RSP: 0018:ffffc90000cd3e48 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 51.122109][ C1] RAX: eb851eb851ed300e RBX: ffff88812b3850c0 RCX: 000000000000073f
[ 51.130057][ C1] RDX: 0000000001729330 RSI: 020c49ba5e353f7d RDI: ffffffff85a563b8
[ 51.138011][ C1] RBP: ffffc90000cd3e80 R08: 0000000000000000 R09: 0000ffff85a563bf
[ 51.145967][ C1] R10: 00000000aaaaaaab R11: ffffffff86045cc8 R12: 0000000000000001
[ 51.153913][ C1] R13: ffff88812b3850c0 R14: 0000000000000000 R15: 0000000000000000
[ 51.161875][ C1] ? default_idle+0x50/0x230
[ 51.176431][ C1] arch_cpu_idle+0x1f/0x30
[ 51.180841][ C1] default_idle_call+0x1e/0x40
[ 51.185592][ C1] do_idle+0x1af/0x280
[ 51.189654][ C1] ? complete+0x44/0x50
[ 51.193801][ C1] cpu_startup_entry+0x1b/0x20
[ 51.199064][ C1] start_secondary+0x208/0x260
[ 51.203817][ C1] secondary_startup_64+0xa4/0xb0
[ 51.210310][ C1] Kernel Offset: disabled
[ 51.214642][ C1] Rebooting in 86400 seconds..