[ 51.654664][ T26] audit: type=1800 audit(1573323239.329:26): pid=7925 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [ 51.695275][ T26] audit: type=1800 audit(1573323239.339:27): pid=7925 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 51.736608][ T26] audit: type=1800 audit(1573323239.339:28): pid=7925 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. [ 52.628931][ T26] audit: type=1800 audit(1573323240.329:29): pid=7925 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. 2019/11/09 18:14:08 fuzzer started 2019/11/09 18:14:10 dialing manager at 10.128.0.105:41185 2019/11/09 18:14:10 syscalls: 2553 2019/11/09 18:14:10 code coverage: enabled 2019/11/09 18:14:10 comparison tracing: enabled 2019/11/09 18:14:10 extra coverage: extra coverage is not supported by the kernel 2019/11/09 18:14:10 setuid sandbox: enabled 2019/11/09 18:14:10 namespace sandbox: enabled 2019/11/09 18:14:10 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/09 18:14:10 fault injection: enabled 2019/11/09 18:14:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/09 18:14:10 net packet injection: enabled 2019/11/09 18:14:10 net device setup: enabled 2019/11/09 18:14:10 concurrency sanitizer: enabled 2019/11/09 18:14:10 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 66.718057][ T8096] KCSAN: could not find function: 'may_open' [ 74.994643][ C1] ================================================================== [ 75.002774][ C1] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 75.011677][ C1] [ 75.013993][ C1] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 0: [ 75.021365][ C1] tick_do_update_jiffies64+0x100/0x250 [ 75.026905][ C1] tick_irq_enter+0x139/0x1c0 [ 75.031602][ C1] irq_enter+0x4f/0x60 [ 75.035657][ C1] smp_apic_timer_interrupt+0x55/0x280 [ 75.041137][ C1] apic_timer_interrupt+0xf/0x20 [ 75.046057][ C1] native_safe_halt+0xe/0x10 [ 75.050656][ C1] arch_cpu_idle+0x1f/0x30 [ 75.055054][ C1] default_idle_call+0x1e/0x40 [ 75.059805][ C1] do_idle+0x1af/0x280 [ 75.063856][ C1] cpu_startup_entry+0x1b/0x20 [ 75.068601][ C1] rest_init+0xec/0xf6 [ 75.072651][ C1] arch_call_rest_init+0x17/0x37 [ 75.077571][ C1] start_kernel+0x838/0x85e [ 75.082058][ C1] x86_64_start_reservations+0x29/0x2b [ 75.087498][ C1] x86_64_start_kernel+0x72/0x76 [ 75.092416][ C1] secondary_startup_64+0xa4/0xb0 [ 75.097414][ C1] [ 75.099727][ C1] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 1: [ 75.107255][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 75.112696][ C1] tick_sched_do_timer+0xd4/0xe0 [ 75.117618][ C1] tick_sched_timer+0x43/0xe0 [ 75.122278][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 75.127459][ C1] hrtimer_interrupt+0x22a/0x480 [ 75.132381][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 75.137835][ C1] apic_timer_interrupt+0xf/0x20 [ 75.142760][ C1] kcsan_setup_watchpoint+0x205/0x410 [ 75.148112][ C1] __tsan_read1+0x13f/0x1e0 [ 75.152599][ C1] kallsyms_expand_symbol.constprop.0+0x70/0x160 [ 75.158908][ C1] kallsyms_lookup_name+0x7f/0x120 [ 75.164106][ C1] debugfs_write+0x14b/0x2d0 [ 75.168678][ C1] full_proxy_write+0xbd/0x100 [ 75.173424][ C1] __vfs_write+0x67/0xc0 [ 75.177650][ C1] vfs_write+0x18a/0x390 [ 75.181872][ C1] ksys_write+0xd5/0x1b0 [ 75.186099][ C1] __x64_sys_write+0x4c/0x60 [ 75.190671][ C1] do_syscall_64+0xcc/0x370 [ 75.195160][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 75.201023][ C1] [ 75.203341][ C1] Reported by Kernel Concurrency Sanitizer on: [ 75.209493][ C1] CPU: 1 PID: 8096 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 75.217117][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.227149][ C1] ================================================================== [ 75.235191][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 75.241781][ C1] CPU: 1 PID: 8096 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 75.249389][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.259443][ C1] Call Trace: [ 75.262707][ C1] [ 75.265550][ C1] dump_stack+0xf5/0x159 [ 75.269789][ C1] panic+0x210/0x640 [ 75.273674][ C1] ? vprintk_func+0x8d/0x140 [ 75.278251][ C1] kcsan_report.cold+0xc/0xe [ 75.282825][ C1] kcsan_setup_watchpoint+0x3fe/0x410 [ 75.288181][ C1] __tsan_read8+0x145/0x1f0 [ 75.292672][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 75.298117][ C1] tick_sched_do_timer+0xd4/0xe0 [ 75.303041][ C1] tick_sched_timer+0x43/0xe0 [ 75.307701][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 75.312906][ C1] ? tick_sched_handle+0x100/0x100 [ 75.318007][ C1] hrtimer_interrupt+0x22a/0x480 [ 75.322940][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 75.328390][ C1] ? smp_reschedule_interrupt+0x71/0x1d0 [ 75.334014][ C1] apic_timer_interrupt+0xf/0x20 [ 75.339018][ C1] [ 75.341955][ C1] RIP: 0010:kcsan_setup_watchpoint+0x205/0x410 [ 75.348097][ C1] Code: 5f 5d c3 83 ff 03 0f 85 ae fe ff ff bf 03 00 00 00 e8 7f 21 00 00 48 83 3d e7 c5 52 04 00 0f 84 24 01 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 eb c0 65 8b 05 75 ce ae 7e a9 00 01 1f 00 0f 84 4b [ 75.367700][ C1] RSP: 0018:ffffc9000170fb98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 75.376109][ C1] RAX: 0002ffff852fe6f7 RBX: 0000000000000000 RCX: ffffffff86046e10 [ 75.384076][ C1] RDX: 0000000000000001 RSI: ffffffff824ef4b7 RDI: 0000000000000282 [ 75.392030][ C1] RBP: ffffc9000170fbd8 R08: ffff888126efc040 R09: 00000000aaaaaaab [ 75.399999][ C1] R10: 0000000000000000 R11: 00000000aaaaaaab R12: ffffffff852fe6f7 [ 75.407954][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 00000000000000f2 [ 75.415924][ C1] ? debug_smp_processor_id+0x47/0x172 [ 75.421374][ C1] __tsan_read1+0x13f/0x1e0 [ 75.425867][ C1] kallsyms_expand_symbol.constprop.0+0x70/0x160 [ 75.432255][ C1] kallsyms_lookup_name+0x7f/0x120 [ 75.437368][ C1] ? __sanitizer_cov_trace_cmp8+0x20/0x20 [ 75.443077][ C1] ? __check_object_size+0x5f/0x346 [ 75.448275][ C1] ? strlen+0x3b/0x60 [ 75.452241][ C1] debugfs_write+0x14b/0x2d0 [ 75.456819][ C1] ? __read_once_size.constprop.0+0x12/0x20 [ 75.462714][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.468939][ C1] ? refcount_inc_not_zero_checked+0xba/0x150 [ 75.475008][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 75.481250][ C1] ? debugfs_file_get+0xae/0x1e0 [ 75.486183][ C1] full_proxy_write+0xbd/0x100 [ 75.490941][ C1] __vfs_write+0x67/0xc0 [ 75.495167][ C1] ? full_proxy_poll+0xf0/0xf0 [ 75.499916][ C1] vfs_write+0x18a/0x390 [ 75.504190][ C1] ksys_write+0xd5/0x1b0 [ 75.508428][ C1] __x64_sys_write+0x4c/0x60 [ 75.513013][ C1] do_syscall_64+0xcc/0x370 [ 75.517554][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 75.523702][ C1] RIP: 0033:0x413cd0 [ 75.527601][ C1] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 75.547206][ C1] RSP: 002b:00007ffd78566128 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.555843][ C1] RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000413cd0 [ 75.563890][ C1] RDX: 000000000000000b RSI: 00000000022a9950 RDI: 0000000000000003 [ 75.571848][ C1] RBP: 00000000022a9950 R08: 0000000000000100 R09: 000000000000000b [ 75.579803][ C1] R10: 0000000000000009 R11: 0000000000000246 R12: 000000000000000b [ 75.587759][ C1] R13: 0000000000000001 R14: 00007ffd785661a0 R15: 0000000000000000 [ 75.597156][ C1] Kernel Offset: disabled [ 75.601497][ C1] Rebooting in 86400 seconds..