[ 58.791012][ T26] audit: type=1800 audit(1581552628.153:27): pid=7771 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 58.826014][ T26] audit: type=1800 audit(1581552628.153:28): pid=7771 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. [ 59.660350][ T26] audit: type=1800 audit(1581552629.083:29): pid=7771 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 [ 59.680466][ T26] audit: type=1800 audit(1581552629.083:30): pid=7771 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 '10.128.10.14' (ECDSA) to the list of known hosts. 2020/02/13 00:10:39 fuzzer started 2020/02/13 00:10:41 dialing manager at 10.128.0.105:43163 2020/02/13 00:10:59 syscalls: 2905 2020/02/13 00:10:59 code coverage: enabled 2020/02/13 00:10:59 comparison tracing: enabled 2020/02/13 00:10:59 extra coverage: enabled 2020/02/13 00:10:59 setuid sandbox: enabled 2020/02/13 00:10:59 namespace sandbox: enabled 2020/02/13 00:10:59 Android sandbox: /sys/fs/selinux/policy does not exist 2020/02/13 00:10:59 fault injection: enabled 2020/02/13 00:10:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/02/13 00:10:59 net packet injection: enabled 2020/02/13 00:10:59 net device setup: enabled 2020/02/13 00:10:59 concurrency sanitizer: enabled 2020/02/13 00:10:59 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 90.703091][ C1] ================================================================== [ 90.711357][ C1] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 90.720398][ C1] [ 90.723339][ C1] write to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 0: [ 90.730724][ C1] tick_do_update_jiffies64+0x100/0x250 [ 90.736266][ C1] tick_irq_enter+0x139/0x1c0 [ 90.741055][ C1] irq_enter+0x4f/0x60 [ 90.745226][ C1] smp_apic_timer_interrupt+0x55/0x280 [ 90.751490][ C1] apic_timer_interrupt+0xf/0x20 [ 90.756419][ C1] native_safe_halt+0xe/0x10 [ 90.761020][ C1] arch_cpu_idle+0xa/0x10 [ 90.765402][ C1] default_idle_call+0x1e/0x40 [ 90.770154][ C1] do_idle+0x1c2/0x290 [ 90.774330][ C1] cpu_startup_entry+0x1b/0x20 [ 90.779086][ C1] rest_init+0xec/0xf6 [ 90.783142][ C1] arch_call_rest_init+0x17/0x37 [ 90.788076][ C1] start_kernel+0x838/0x85e [ 90.792574][ C1] x86_64_start_reservations+0x29/0x2b [ 90.798137][ C1] x86_64_start_kernel+0x72/0x76 [ 90.803154][ C1] secondary_startup_64+0xa4/0xb0 [ 90.808274][ C1] [ 90.810600][ C1] read to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 1: [ 90.818162][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 90.823716][ C1] tick_sched_do_timer+0xd4/0xe0 [ 90.828728][ C1] tick_sched_timer+0x43/0xe0 [ 90.833429][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 90.838625][ C1] hrtimer_interrupt+0x22a/0x480 [ 90.843550][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 90.849001][ C1] apic_timer_interrupt+0xf/0x20 [ 90.853934][ C1] write_comp_data+0x17/0x70 [ 90.858646][ C1] kallsyms_expand_symbol.constprop.0+0xcd/0x160 [ 90.864968][ C1] kallsyms_lookup_name+0x7f/0x120 [ 90.870074][ C1] debugfs_write+0x16c/0x320 [ 90.874650][ C1] full_proxy_write+0xbd/0x100 [ 90.879408][ C1] __vfs_write+0x67/0xc0 [ 90.883648][ C1] vfs_write+0x18a/0x390 [ 90.887901][ C1] ksys_write+0xd5/0x1b0 [ 90.892128][ C1] __x64_sys_write+0x4c/0x60 [ 90.896769][ C1] do_syscall_64+0xcc/0x3a0 [ 90.901320][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 90.907202][ C1] [ 90.909515][ C1] Reported by Kernel Concurrency Sanitizer on: [ 90.915652][ C1] CPU: 1 PID: 7942 Comm: syz-executor Not tainted 5.5.0-rc1-syzkaller #0 [ 90.924327][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.934373][ C1] ================================================================== [ 90.942430][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 90.949039][ C1] CPU: 1 PID: 7942 Comm: syz-executor Not tainted 5.5.0-rc1-syzkaller #0 [ 90.957548][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.967801][ C1] Call Trace: [ 90.971084][ C1] [ 90.973935][ C1] dump_stack+0x11d/0x181 [ 90.978260][ C1] panic+0x210/0x640 [ 90.982160][ C1] ? vprintk_func+0x8d/0x140 [ 90.986743][ C1] kcsan_report.cold+0xc/0x15 [ 90.991425][ C1] kcsan_setup_watchpoint+0x2e2/0x380 [ 90.996911][ C1] __tsan_read8+0xc6/0x100 [ 91.001316][ C1] tick_do_update_jiffies64+0x2b/0x250 [ 91.006773][ C1] tick_sched_do_timer+0xd4/0xe0 [ 91.011710][ C1] tick_sched_timer+0x43/0xe0 [ 91.016386][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 91.021629][ C1] ? tick_sched_handle+0x100/0x100 [ 91.026792][ C1] hrtimer_interrupt+0x22a/0x480 [ 91.031781][ C1] ? sched_clock+0x13/0x20 [ 91.036189][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 91.041670][ C1] apic_timer_interrupt+0xf/0x20 [ 91.046686][ C1] [ 91.049631][ C1] RIP: 0010:write_comp_data+0x17/0x70 [ 91.055152][ C1] Code: c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 40 8c 01 00 65 8b 05 e8 7c bc 7e a9 00 01 1f 00 75 51 <41> 8b 80 30 0a 00 00 83 f8 03 75 45 49 8b 80 38 0a 00 00 45 8b 80 [ 91.074772][ C1] RSP: 0018:ffffc90001667be8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 91.083230][ C1] RAX: 0000000080000000 RBX: ffffffff85833dff RCX: ffffffff813fb80d [ 91.091341][ C1] RDX: 000000000000005a RSI: 0000000000000001 RDI: 0000000000000007 [ 91.099305][ C1] RBP: ffffc90001667bf0 R08: ffff88812a8b8000 R09: 00000000aaaaaaab [ 91.107318][ C1] R10: 0000ffff85833dff R11: 000088812a8b8b57 R12: 0000000000000070 [ 91.115280][ C1] R13: 0000000000000001 R14: ffffc90001667c6e R15: 000000000000005a [ 91.124018][ C1] ? kallsyms_expand_symbol.constprop.0+0xcd/0x160 [ 91.130640][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.136881][ C1] kallsyms_expand_symbol.constprop.0+0xcd/0x160 [ 91.143220][ C1] kallsyms_lookup_name+0x7f/0x120 [ 91.148431][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.154665][ C1] ? strlen+0x3b/0x60 [ 91.159076][ C1] debugfs_write+0x16c/0x320 [ 91.163660][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 91.169550][ C1] ? __read_once_size+0x5a/0xe0 [ 91.174402][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.181284][ C1] ? debugfs_file_get+0x12c/0x2a0 [ 91.186333][ C1] full_proxy_write+0xbd/0x100 [ 91.191100][ C1] __vfs_write+0x67/0xc0 [ 91.195366][ C1] ? full_proxy_poll+0xf0/0xf0 [ 91.200117][ C1] vfs_write+0x18a/0x390 [ 91.204344][ C1] ksys_write+0xd5/0x1b0 [ 91.208607][ C1] __x64_sys_write+0x4c/0x60 [ 91.213192][ C1] do_syscall_64+0xcc/0x3a0 [ 91.217688][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 91.223586][ C1] RIP: 0033:0x414e70 [ 91.227595][ 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 fd 35 86 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 [ 91.247258][ C1] RSP: 002b:00007ffcab1a4e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 91.255662][ C1] RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000000414e70 [ 91.263651][ C1] RDX: 0000000000000017 RSI: 0000000002425950 RDI: 0000000000000003 [ 91.271663][ C1] RBP: 0000000002425950 R08: 0000000000000000 R09: 0000000000000017 [ 91.279634][ C1] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000017 [ 91.287766][ C1] R13: 0000000000000001 R14: 00007ffcab1a4ed0 R15: 0000000000000000 [ 91.297313][ C1] Kernel Offset: disabled [ 91.301648][ C1] Rebooting in 86400 seconds..