[ 52.046534][ T26] audit: type=1800 audit(1572880068.158:27): pid=7955 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 52.070623][ T26] audit: type=1800 audit(1572880068.158:28): pid=7955 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. [ 53.034395][ T26] audit: type=1800 audit(1572880069.228:29): pid=7955 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 [ 53.054708][ T26] audit: type=1800 audit(1572880069.228:30): pid=7955 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 '10.128.1.10' (ECDSA) to the list of known hosts. 2019/11/04 15:07:58 fuzzer started 2019/11/04 15:08:00 dialing manager at 10.128.0.105:42499 2019/11/04 15:08:01 syscalls: 2553 2019/11/04 15:08:01 code coverage: enabled 2019/11/04 15:08:01 comparison tracing: enabled 2019/11/04 15:08:01 extra coverage: extra coverage is not supported by the kernel 2019/11/04 15:08:01 setuid sandbox: enabled 2019/11/04 15:08:01 namespace sandbox: enabled 2019/11/04 15:08:01 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/04 15:08:01 fault injection: enabled 2019/11/04 15:08:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/04 15:08:01 net packet injection: enabled 2019/11/04 15:08:01 net device setup: enabled 2019/11/04 15:08:01 concurrency sanitizer: enabled 2019/11/04 15:08:01 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 67.785263][ T8128] KCSAN: could not find function: 'poll_schedule_timeout' 2019/11/04 15:08:04 adding functions to KCSAN blacklist: 'rcu_gp_fqs_loop' 'find_next_bit' 'tick_sched_do_timer' 'run_timer_softirq' 'rcu_gp_fqs_check_wake' 'pipe_poll' 'kauditd_thread' 'wbt_issue' 'tick_do_update_jiffies64' 'blk_mq_sched_dispatch_requests' 'ep_poll' 'blk_mq_get_request' 'p9_poll_workfn' 'generic_permission' 'tcp_add_backlog' 'poll_schedule_timeout' 'ext4_has_free_clusters' 'pid_update_inode' 'tomoyo_supervisor' '__hrtimer_run_queues' 'ktime_get_real_seconds' 'add_timer' [ 73.362527][ T8113] ================================================================== [ 73.370701][ T8113] BUG: KCSAN: data-race in ktime_get_seconds / timekeeping_advance [ 73.378613][ T8113] [ 73.380957][ T8113] write to 0xffffffff86041b08 of 280 bytes by interrupt on cpu 1: [ 73.388781][ T8113] timekeeping_advance+0x88e/0xd80 [ 73.393908][ T8113] update_wall_time+0x19/0x20 [ 73.398620][ T8113] tick_do_update_jiffies64+0x1a4/0x250 [ 73.404200][ T8113] tick_sched_do_timer+0xd4/0xe0 [ 73.409233][ T8113] tick_sched_timer+0x43/0xe0 [ 73.413923][ T8113] __hrtimer_run_queues+0x274/0x5f0 [ 73.419117][ T8113] hrtimer_interrupt+0x22a/0x480 [ 73.424148][ T8113] smp_apic_timer_interrupt+0xdc/0x280 [ 73.429591][ T8113] apic_timer_interrupt+0xf/0x20 [ 73.434517][ T8113] __tsan_unaligned_write2+0x5c/0x1f0 [ 73.439892][ T8113] __build_skb_around+0x119/0x1b0 [ 73.444930][ T8113] __build_skb+0x63/0x80 [ 73.449162][ T8113] __napi_alloc_skb+0x18a/0x210 [ 73.454008][ T8113] page_to_skb+0x8d/0x480 [ 73.458323][ T8113] receive_buf+0x17c7/0x30b0 [ 73.462906][ T8113] virtnet_poll+0x436/0x7d0 [ 73.467404][ T8113] net_rx_action+0x3ae/0xa90 [ 73.471977][ T8113] __do_softirq+0x115/0x33f [ 73.476491][ T8113] run_ksoftirqd+0x46/0x60 [ 73.480901][ T8113] smpboot_thread_fn+0x37d/0x4a0 [ 73.485882][ T8113] kthread+0x1d4/0x200 [ 73.489937][ T8113] ret_from_fork+0x1f/0x30 [ 73.494328][ T8113] [ 73.496643][ T8113] read to 0xffffffff86041b80 of 8 bytes by task 8113 on cpu 0: [ 73.504188][ T8113] ktime_get_seconds+0x45/0x70 [ 73.509064][ T8113] tcp_rcv_established+0xeeb/0xf50 [ 73.514158][ T8113] tcp_v4_do_rcv+0x3b5/0x520 [ 73.518751][ T8113] __release_sock+0x135/0x1e0 [ 73.523415][ T8113] release_sock+0x61/0x160 [ 73.527827][ T8113] tcp_recvmsg+0x653/0x1b40 [ 73.532312][ T8113] inet_recvmsg+0xbb/0x250 [ 73.536710][ T8113] sock_recvmsg+0x92/0xb0 [ 73.541032][ T8113] sock_read_iter+0x15f/0x1e0 [ 73.545689][ T8113] new_sync_read+0x389/0x4f0 [ 73.550266][ T8113] __vfs_read+0xb1/0xc0 [ 73.554411][ T8113] vfs_read+0x143/0x2c0 [ 73.558734][ T8113] ksys_read+0xd5/0x1b0 [ 73.562871][ T8113] __x64_sys_read+0x4c/0x60 [ 73.567366][ T8113] do_syscall_64+0xcc/0x370 [ 73.571856][ T8113] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.577719][ T8113] [ 73.580034][ T8113] Reported by Kernel Concurrency Sanitizer on: [ 73.586266][ T8113] CPU: 0 PID: 8113 Comm: syz-fuzzer Not tainted 5.4.0-rc6+ #0 [ 73.593707][ T8113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.604259][ T8113] ================================================================== [ 73.612397][ T8113] Kernel panic - not syncing: panic_on_warn set ... [ 73.618988][ T8113] CPU: 0 PID: 8113 Comm: syz-fuzzer Not tainted 5.4.0-rc6+ #0 [ 73.626471][ T8113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.636516][ T8113] Call Trace: [ 73.639801][ T8113] dump_stack+0xf5/0x159 [ 73.644029][ T8113] panic+0x210/0x640 [ 73.647912][ T8113] ? vprintk_func+0x8d/0x140 [ 73.652502][ T8113] kcsan_report.cold+0xc/0xe [ 73.657088][ T8113] kcsan_setup_watchpoint+0x3fe/0x410 [ 73.662445][ T8113] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 73.668149][ T8113] __tsan_read8+0x145/0x1f0 [ 73.672652][ T8113] ktime_get_seconds+0x45/0x70 [ 73.677402][ T8113] tcp_rcv_established+0xeeb/0xf50 [ 73.682502][ T8113] ? ipv4_dst_check+0xc6/0xf0 [ 73.687180][ T8113] tcp_v4_do_rcv+0x3b5/0x520 [ 73.691771][ T8113] __release_sock+0x135/0x1e0 [ 73.696436][ T8113] release_sock+0x61/0x160 [ 73.700847][ T8113] tcp_recvmsg+0x653/0x1b40 [ 73.705362][ T8113] inet_recvmsg+0xbb/0x250 [ 73.709763][ T8113] ? apparmor_socket_recvmsg+0x3b/0x50 [ 73.715204][ T8113] ? security_socket_recvmsg+0x92/0xb0 [ 73.720651][ T8113] ? inet_sendpage+0x100/0x100 [ 73.725400][ T8113] sock_recvmsg+0x92/0xb0 [ 73.729717][ T8113] sock_read_iter+0x15f/0x1e0 [ 73.734389][ T8113] new_sync_read+0x389/0x4f0 [ 73.738972][ T8113] __vfs_read+0xb1/0xc0 [ 73.743114][ T8113] vfs_read+0x143/0x2c0 [ 73.747286][ T8113] ksys_read+0xd5/0x1b0 [ 73.751439][ T8113] __x64_sys_read+0x4c/0x60 [ 73.755929][ T8113] do_syscall_64+0xcc/0x370 [ 73.760433][ T8113] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.766305][ T8113] RIP: 0033:0x47c530 [ 73.770189][ T8113] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 73.789872][ T8113] RSP: 002b:000000c420139810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 73.798268][ T8113] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 73.806221][ T8113] RDX: 0000000000001000 RSI: 000000c4203f2000 RDI: 0000000000000003 [ 73.814179][ T8113] RBP: 000000c420139868 R08: 0000000000000000 R09: 0000000000000000 [ 73.822142][ T8113] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000010 [ 73.830116][ T8113] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 73.839552][ T8113] Kernel Offset: disabled [ 73.844268][ T8113] Rebooting in 86400 seconds..