[....] 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.
[ 51.315893][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 51.315910][ T26] audit: type=1800 audit(1580471612.858:29): pid=7903 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
[ 51.342229][ T26] audit: type=1800 audit(1580471612.858:30): pid=7903 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 '10.128.10.50' (ECDSA) to the list of known hosts.
2020/01/31 11:53:42 fuzzer started
2020/01/31 11:53:44 dialing manager at 10.128.0.105:37077
2020/01/31 11:53:44 syscalls: 2900
2020/01/31 11:53:44 code coverage: enabled
2020/01/31 11:53:44 comparison tracing: enabled
2020/01/31 11:53:44 extra coverage: enabled
2020/01/31 11:53:44 setuid sandbox: enabled
2020/01/31 11:53:44 namespace sandbox: enabled
2020/01/31 11:53:44 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/31 11:53:44 fault injection: enabled
2020/01/31 11:53:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/31 11:53:44 net packet injection: enabled
2020/01/31 11:53:44 net device setup: enabled
2020/01/31 11:53:44 concurrency sanitizer: enabled
2020/01/31 11:53:44 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 63.384405][ C0] ==================================================================
[ 63.392578][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 63.400295][ C0]
[ 63.402677][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 63.410240][ C0] hrtimer_active+0x84/0x1a0
[ 63.414831][ C0] task_tick_fair+0x4c/0x910
[ 63.419425][ C0] scheduler_tick+0x5f/0xf0
[ 63.424054][ C0] update_process_times+0x5a/0x80
[ 63.429229][ C0] tick_sched_handle+0x75/0x100
[ 63.434099][ C0] tick_sched_timer+0x58/0xe0
[ 63.438806][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 63.444032][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.448987][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.454461][ C0] apic_timer_interrupt+0xf/0x20
[ 63.459414][ C0] __sanitizer_cov_trace_pc+0x14/0x50
[ 63.464809][ C0] kallsyms_expand_symbol.constprop.0+0xf1/0x160
[ 63.471267][ C0] kallsyms_lookup_name+0x7f/0x120
[ 63.476386][ C0] debugfs_write+0x14b/0x2d0
[ 63.480990][ C0] full_proxy_write+0xbd/0x100
[ 63.485865][ C0] __vfs_write+0x67/0xc0
[ 63.490117][ C0] vfs_write+0x18a/0x390
[ 63.494392][ C0] ksys_write+0xd5/0x1b0
[ 63.498639][ C0] __x64_sys_write+0x4c/0x60
[ 63.503243][ C0] do_syscall_64+0xcc/0x3a0
[ 63.507780][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 63.513669][ C0]
[ 63.516012][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 63.523745][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 63.528955][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.533910][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.539471][ C0] apic_timer_interrupt+0xf/0x20
[ 63.544416][ C0] native_safe_halt+0xe/0x10
[ 63.549012][ C0] arch_cpu_idle+0xa/0x10
[ 63.553351][ C0] default_idle_call+0x1e/0x40
[ 63.558125][ C0] do_idle+0x1c2/0x290
[ 63.562234][ C0] cpu_startup_entry+0x1b/0x20
[ 63.567006][ C0] rest_init+0xec/0xf6
[ 63.571091][ C0] arch_call_rest_init+0x17/0x37
[ 63.576034][ C0] start_kernel+0x838/0x85e
[ 63.580542][ C0] x86_64_start_reservations+0x29/0x2b
[ 63.586011][ C0] x86_64_start_kernel+0x72/0x76
[ 63.590960][ C0] secondary_startup_64+0xa4/0xb0
[ 63.595978][ C0]
[ 63.598301][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 63.604477][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.612368][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.622599][ C0] ==================================================================
[ 63.630777][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 63.637374][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.645355][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.655548][ C0] Call Trace:
[ 63.658918][ C0]
[ 63.661776][ C0] dump_stack+0x11d/0x181
[ 63.666126][ C0] panic+0x210/0x640
[ 63.670268][ C0] ? vprintk_func+0x8d/0x140
[ 63.674876][ C0] kcsan_report.cold+0xc/0xd
[ 63.679482][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 63.684871][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 63.690273][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 63.695490][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 63.701572][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.706522][ C0] ? sched_clock+0x13/0x20
[ 63.710953][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.716424][ C0] apic_timer_interrupt+0xf/0x20
[ 63.722102][ C0]
[ 63.725043][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 63.730653][ 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
[ 63.750276][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 63.758824][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 63.766797][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 63.774780][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 63.782761][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 63.790879][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 63.798972][ C0] ? debug_smp_processor_id+0x35/0x137
[ 63.804445][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 63.809913][ C0] ? default_idle+0x26/0x180
[ 63.814535][ C0] arch_cpu_idle+0xa/0x10
[ 63.818880][ C0] default_idle_call+0x1e/0x40
[ 63.823660][ C0] do_idle+0x1c2/0x290
[ 63.827731][ C0] ? debug_smp_processor_id+0x43/0x137
[ 63.833219][ C0] cpu_startup_entry+0x1b/0x20
[ 63.837985][ C0] rest_init+0xec/0xf6
[ 63.842071][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 63.849279][ C0] arch_call_rest_init+0x17/0x37
[ 63.857394][ C0] start_kernel+0x838/0x85e
[ 63.861913][ C0] x86_64_start_reservations+0x29/0x2b
[ 63.867385][ C0] x86_64_start_kernel+0x72/0x76
[ 63.872332][ C0] secondary_startup_64+0xa4/0xb0
[ 63.878950][ C0] Kernel Offset: disabled
[ 63.883282][ C0] Rebooting in 86400 seconds..