INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. 2018/04/19 04:35:46 parsed 1 programs 2018/04/19 04:35:46 executed programs: 0 syzkaller login: [ 30.507853] IPVS: ftp: loaded support on port[0] = 21 [ 30.552850] WARNING: CPU: 1 PID: 4497 at ./include/net/sock.h:639 smc_unhash_sk+0x345/0x4a0 [ 30.561434] Kernel panic - not syncing: panic_on_warn set ... [ 30.561434] [ 30.568784] CPU: 1 PID: 4497 Comm: syz-executor0 Not tainted 4.16.0+ #6 [ 30.575511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.584841] Call Trace: [ 30.587413] dump_stack+0x1b9/0x294 [ 30.591032] ? dump_stack_print_info.cold.2+0x52/0x52 [ 30.596216] ? smc_unhash_sk+0x250/0x4a0 [ 30.600256] panic+0x22f/0x4de [ 30.603430] ? add_taint.cold.5+0x16/0x16 [ 30.607558] ? __warn.cold.8+0x148/0x1b3 [ 30.611605] ? __warn.cold.8+0x117/0x1b3 [ 30.615644] ? smc_unhash_sk+0x345/0x4a0 [ 30.619685] __warn.cold.8+0x163/0x1b3 [ 30.623551] ? smc_unhash_sk+0x345/0x4a0 [ 30.627592] report_bug+0x252/0x2d0 [ 30.631200] do_error_trap+0x1de/0x490 [ 30.635069] ? math_error+0x420/0x420 [ 30.638852] ? lock_acquire+0x1dc/0x520 [ 30.642807] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.647631] do_invalid_op+0x1b/0x20 [ 30.651322] invalid_op+0x1b/0x40 [ 30.654752] RIP: 0010:smc_unhash_sk+0x345/0x4a0 [ 30.659394] RSP: 0018:ffff8801d9f8f010 EFLAGS: 00010293 [ 30.664735] RAX: ffff8801ac66a2c0 RBX: ffff8801cff0b7c0 RCX: ffffffff871ea53e [ 30.671983] RDX: 0000000000000000 RSI: ffffffff871ea5f5 RDI: 0000000000000005 [ 30.679235] RBP: ffff8801d9f8f0f8 R08: ffff8801ac66a2c0 R09: ffffed0039fe1708 [ 30.686482] R10: ffffed0039fe1708 R11: ffff8801cff0b843 R12: 1ffff1003b3f1e06 [ 30.693729] R13: ffff8801d9f8f0d0 R14: ffffffff894dd740 R15: ffff8801cff0b840 [ 30.700987] ? smc_unhash_sk+0x28e/0x4a0 [ 30.705035] ? smc_unhash_sk+0x345/0x4a0 [ 30.709098] ? smc_hash_sk+0x2f0/0x2f0 [ 30.712967] ? release_sock+0x1e2/0x2b0 [ 30.716921] ? __local_bh_enable_ip+0x161/0x230 [ 30.721568] ? __release_sock+0x3a0/0x3a0 [ 30.725697] ? smc_release+0x269/0x610 [ 30.729564] ? trace_hardirqs_on+0xd/0x10 [ 30.733691] ? __local_bh_enable_ip+0x161/0x230 [ 30.738340] smc_release+0x36e/0x610 [ 30.742048] sock_release+0x96/0x1b0 [ 30.745752] ? sock_alloc_file+0x4e0/0x4e0 [ 30.749967] sock_close+0x16/0x20 [ 30.753402] __fput+0x34d/0x890 [ 30.756665] ? fput+0x1a0/0x1a0 [ 30.759926] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.764922] ____fput+0x15/0x20 [ 30.768189] task_work_run+0x1e4/0x290 [ 30.772065] ? task_work_cancel+0x240/0x240 [ 30.776371] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 30.781887] ? switch_task_namespaces+0xa2/0xd0 [ 30.786539] do_exit+0x1aee/0x2730 [ 30.790061] ? match_held_lock+0x891/0x8b0 [ 30.794275] ? mm_update_next_owner+0x980/0x980 [ 30.798921] ? print_usage_bug+0xc0/0xc0 [ 30.802962] ? lock_downgrade+0x8e0/0x8e0 [ 30.807096] ? lock_downgrade+0x8e0/0x8e0 [ 30.811225] ? kasan_check_read+0x11/0x20 [ 30.815353] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.819749] ? __lock_acquire+0x7f5/0x5140 [ 30.823965] ? refcount_sub_and_test+0x212/0x330 [ 30.828716] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 30.833451] ? _raw_spin_unlock_bh+0x30/0x40 [ 30.837845] ? debug_check_no_locks_freed+0x310/0x310 [ 30.843035] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 30.848557] ? smc_poll+0x294/0xcf0 [ 30.852163] ? smc_connect_rdma+0x1520/0x1520 [ 30.856657] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.862188] ? __fget_light+0x2ef/0x430 [ 30.866146] ? fget_raw+0x20/0x20 [ 30.869580] ? __check_object_size+0x95/0x5d9 [ 30.874066] ? graph_lock+0x170/0x170 [ 30.877856] ? sock_poll+0x2be/0x390 [ 30.881550] ? sock_ioctl+0x680/0x680 [ 30.885330] ? memset+0x31/0x40 [ 30.888589] ? find_held_lock+0x36/0x1c0 [ 30.892633] ? lock_downgrade+0x8e0/0x8e0 [ 30.896772] do_group_exit+0x16f/0x430 [ 30.900644] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.905213] ? SyS_exit+0x30/0x30 [ 30.908652] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.913127] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.918130] get_signal+0x886/0x1960 [ 30.921828] ? ptrace_notify+0x130/0x130 [ 30.925868] ? lock_downgrade+0x8e0/0x8e0 [ 30.929993] ? lock_downgrade+0x8e0/0x8e0 [ 30.934125] ? kasan_check_read+0x11/0x20 [ 30.938253] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.942643] ? release_sock+0x1e2/0x2b0 [ 30.946593] ? trace_hardirqs_on+0xd/0x10 [ 30.950720] ? __local_bh_enable_ip+0x161/0x230 [ 30.955381] do_signal+0x98/0x2040 [ 30.958914] ? __release_sock+0x3a0/0x3a0 [ 30.963049] ? setup_sigcontext+0x7d0/0x7d0 [ 30.967788] ? smc_connect+0xaf/0x260 [ 30.971573] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.977092] ? __sys_connect+0x1d1/0x4c0 [ 30.981152] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 30.986669] ? SyS_accept+0x30/0x30 [ 30.990283] ? do_restart_poll+0x2d0/0x2d0 [ 30.994517] ? exit_to_usermode_loop+0x87/0x310 [ 30.999179] exit_to_usermode_loop+0x28a/0x310 [ 31.003743] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 31.008565] ? do_syscall_64+0xb7/0x9d0 [ 31.012522] do_syscall_64+0x792/0x9d0 [ 31.016390] ? vmalloc_sync_all+0x30/0x30 [ 31.020520] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.025256] ? syscall_return_slowpath+0x5c0/0x5c0 [ 31.030165] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.035077] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.040426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.045262] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.050428] RIP: 0033:0x455329 [ 31.053595] RSP: 002b:00007ffd92cae468 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 31.061283] RAX: 0000000000000001 RBX: 000000000102a914 RCX: 0000000000455329 [ 31.068541] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020000100 [ 31.075791] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 31.083045] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 31.090292] R13: 0000000000000462 R14: 00000000006f99d0 R15: 0000000000007a75 [ 31.098128] Dumping ftrace buffer: [ 31.101735] (ftrace buffer empty) [ 31.105419] Kernel Offset: disabled [ 31.109027] Rebooting in 86400 seconds..