[ 53.027398][ T26] audit: type=1800 audit(1580582858.507:27): pid=7917 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 53.058809][ T26] audit: type=1800 audit(1580582858.507:28): pid=7917 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.735269][ T26] audit: type=1800 audit(1580582859.277:29): pid=7917 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 [ 53.755267][ T26] audit: type=1800 audit(1580582859.277:30): pid=7917 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 '10.128.0.94' (ECDSA) to the list of known hosts. 2020/02/01 18:47:46 fuzzer started 2020/02/01 18:47:48 dialing manager at 10.128.0.105:40209 2020/02/01 18:47:48 syscalls: 2904 2020/02/01 18:47:48 code coverage: enabled 2020/02/01 18:47:48 comparison tracing: enabled 2020/02/01 18:47:48 extra coverage: enabled 2020/02/01 18:47:48 setuid sandbox: enabled 2020/02/01 18:47:48 namespace sandbox: enabled 2020/02/01 18:47:48 Android sandbox: /sys/fs/selinux/policy does not exist 2020/02/01 18:47:48 fault injection: enabled 2020/02/01 18:47:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/02/01 18:47:48 net packet injection: enabled 2020/02/01 18:47:48 net device setup: enabled 2020/02/01 18:47:48 concurrency sanitizer: enabled 2020/02/01 18:47:48 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 70.756515][ T8086] KCSAN: could not find function: 'poll_schedule_timeout' [ 70.888860][ C0] ================================================================== [ 70.897118][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active [ 70.904858][ C0] [ 70.907194][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1: [ 70.915023][ C0] hrtimer_active+0x84/0x1a0 [ 70.919629][ C0] task_tick_fair+0x4c/0x910 [ 70.924577][ C0] scheduler_tick+0x5f/0xf0 [ 70.929093][ C0] update_process_times+0x5a/0x80 [ 70.934136][ C0] tick_sched_handle+0x75/0x100 [ 70.938997][ C0] tick_sched_timer+0x58/0xe0 [ 70.943770][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 70.948972][ C0] hrtimer_interrupt+0x22a/0x480 [ 70.954440][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 70.959898][ C0] apic_timer_interrupt+0xf/0x20 [ 70.964852][ C0] kcsan_setup_watchpoint+0x1d4/0x460 [ 70.970782][ C0] __tsan_unaligned_write1+0xc3/0x100 [ 70.976168][ C0] kallsyms_expand_symbol.constprop.0+0xe8/0x160 [ 70.982522][ C0] kallsyms_lookup_name+0x7f/0x120 [ 70.987792][ C0] debugfs_write+0x14b/0x2d0 [ 70.992411][ C0] full_proxy_write+0xbd/0x100 [ 70.997182][ C0] __vfs_write+0x67/0xc0 [ 71.001515][ C0] vfs_write+0x18a/0x390 [ 71.005793][ C0] ksys_write+0xd5/0x1b0 [ 71.010195][ C0] __x64_sys_write+0x4c/0x60 [ 71.015448][ C0] do_syscall_64+0xcc/0x3a0 [ 71.019972][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.025857][ C0] [ 71.028196][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0: [ 71.035845][ C0] __hrtimer_run_queues+0x1e8/0x5f0 [ 71.041048][ C0] hrtimer_interrupt+0x22a/0x480 [ 71.045985][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 71.051463][ C0] apic_timer_interrupt+0xf/0x20 [ 71.056529][ C0] native_safe_halt+0xe/0x10 [ 71.061130][ C0] arch_cpu_idle+0xa/0x10 [ 71.065463][ C0] default_idle_call+0x1e/0x40 [ 71.070240][ C0] do_idle+0x1c2/0x290 [ 71.074329][ C0] cpu_startup_entry+0x1b/0x20 [ 71.079100][ C0] rest_init+0xec/0xf6 [ 71.083184][ C0] arch_call_rest_init+0x17/0x37 [ 71.088127][ C0] start_kernel+0x838/0x85e [ 71.092635][ C0] x86_64_start_reservations+0x29/0x2b [ 71.098112][ C0] x86_64_start_kernel+0x72/0x76 [ 71.103072][ C0] secondary_startup_64+0xa4/0xb0 [ 71.108108][ C0] [ 71.110430][ C0] Reported by Kernel Concurrency Sanitizer on: [ 71.116589][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0 [ 71.124496][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.134555][ C0] ================================================================== [ 71.142631][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 71.149328][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0 [ 71.157207][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.167395][ C0] Call Trace: [ 71.170679][ C0] [ 71.173539][ C0] dump_stack+0x11d/0x181 [ 71.177887][ C0] panic+0x210/0x640 [ 71.181794][ C0] ? vprintk_func+0x8d/0x140 [ 71.186394][ C0] kcsan_report.cold+0xc/0xd [ 71.191021][ C0] kcsan_setup_watchpoint+0x3fe/0x460 [ 71.196403][ C0] __tsan_unaligned_write8+0xc7/0x110 [ 71.201785][ C0] __hrtimer_run_queues+0x1e8/0x5f0 [ 71.207003][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0 [ 71.213085][ C0] hrtimer_interrupt+0x22a/0x480 [ 71.218182][ C0] ? sched_clock+0x13/0x20 [ 71.222613][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 71.229035][ C0] apic_timer_interrupt+0xf/0x20 [ 71.234129][ C0] [ 71.237086][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 71.242581][ 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 [ 71.262305][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 71.270864][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55 [ 71.278843][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005 [ 71.287650][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160 [ 71.295745][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000 [ 71.303725][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000 [ 71.311714][ C0] ? debug_smp_processor_id+0x35/0x137 [ 71.317206][ C0] ? debug_smp_processor_id+0x3e/0x137 [ 71.322762][ C0] ? default_idle+0x26/0x180 [ 71.327362][ C0] arch_cpu_idle+0xa/0x10 [ 71.331703][ C0] default_idle_call+0x1e/0x40 [ 71.336493][ C0] do_idle+0x1c2/0x290 [ 71.340582][ C0] ? debug_smp_processor_id+0x43/0x137 [ 71.346137][ C0] cpu_startup_entry+0x1b/0x20 [ 71.351052][ C0] rest_init+0xec/0xf6 [ 71.355272][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4 [ 71.362482][ C0] arch_call_rest_init+0x17/0x37 [ 71.367426][ C0] start_kernel+0x838/0x85e [ 71.372096][ C0] x86_64_start_reservations+0x29/0x2b [ 71.377674][ C0] x86_64_start_kernel+0x72/0x76 [ 71.382635][ C0] secondary_startup_64+0xa4/0xb0 [ 71.389208][ C0] Kernel Offset: disabled [ 71.393647][ C0] Rebooting in 86400 seconds..