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 '10.128.10.46' (ECDSA) to the list of known hosts. 2018/04/23 07:02:24 parsed 1 programs 2018/04/23 07:02:24 executed programs: 0 syzkaller login: [ 42.270472] IPVS: ftp: loaded support on port[0] = 21 [ 42.313465] WARNING: CPU: 1 PID: 4463 at include/net/sock.h:639 smc_unhash_sk+0x345/0x4a0 [ 42.321846] Kernel panic - not syncing: panic_on_warn set ... [ 42.321846] [ 42.329194] CPU: 1 PID: 4463 Comm: syz-executor0 Not tainted 4.17.0-rc1+ #13 [ 42.336357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.345695] Call Trace: [ 42.348266] dump_stack+0x1b9/0x294 [ 42.351873] ? dump_stack_print_info.cold.2+0x52/0x52 [ 42.357051] ? smc_unhash_sk+0x340/0x4a0 [ 42.361090] panic+0x22f/0x4de [ 42.364260] ? add_taint.cold.5+0x16/0x16 [ 42.368388] ? __warn.cold.8+0x148/0x1b3 [ 42.372426] ? __warn.cold.8+0x117/0x1b3 [ 42.376473] ? smc_unhash_sk+0x345/0x4a0 [ 42.380517] __warn.cold.8+0x163/0x1b3 [ 42.384406] ? smc_unhash_sk+0x345/0x4a0 [ 42.388461] report_bug+0x252/0x2d0 [ 42.392069] do_error_trap+0x1de/0x490 [ 42.395939] ? math_error+0x420/0x420 [ 42.399722] ? lock_acquire+0x1dc/0x520 [ 42.403678] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.408505] do_invalid_op+0x1b/0x20 [ 42.412200] invalid_op+0x14/0x20 [ 42.415630] RIP: 0010:smc_unhash_sk+0x345/0x4a0 [ 42.420274] RSP: 0018:ffff8801b56ef030 EFLAGS: 00010293 [ 42.425616] RAX: ffff8801b5cf4700 RBX: ffff8801b4d537c0 RCX: ffffffff873f1c4e [ 42.432866] RDX: 0000000000000000 RSI: ffffffff873f1d05 RDI: 0000000000000005 [ 42.440114] RBP: ffff8801b56ef118 R08: ffff8801b5cf4700 R09: ffffed00369aa708 [ 42.447365] R10: ffffed00369aa708 R11: ffff8801b4d53843 R12: 1ffff10036adde0a [ 42.454615] R13: ffff8801b56ef0f0 R14: ffffffff8970cd40 R15: ffff8801b4d53840 [ 42.461881] ? smc_unhash_sk+0x28e/0x4a0 [ 42.465924] ? smc_unhash_sk+0x345/0x4a0 [ 42.469969] ? smc_hash_sk+0x2f0/0x2f0 [ 42.473838] ? release_sock+0x1e2/0x2b0 [ 42.477798] ? __local_bh_enable_ip+0x161/0x230 [ 42.482448] ? __release_sock+0x3a0/0x3a0 [ 42.486580] ? smc_release+0x269/0x610 [ 42.490448] ? trace_hardirqs_on+0xd/0x10 [ 42.494576] ? __local_bh_enable_ip+0x161/0x230 [ 42.499237] smc_release+0x36e/0x610 [ 42.502935] sock_release+0x96/0x1b0 [ 42.506634] ? sock_alloc_file+0x4e0/0x4e0 [ 42.510852] sock_close+0x16/0x20 [ 42.514286] __fput+0x34d/0x890 [ 42.517545] ? fput+0x1a0/0x1a0 [ 42.520802] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.525278] ____fput+0x15/0x20 [ 42.528535] task_work_run+0x1e4/0x290 [ 42.532400] ? task_work_cancel+0x240/0x240 [ 42.536704] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.542220] ? switch_task_namespaces+0xa2/0xd0 [ 42.546868] do_exit+0x1aee/0x2730 [ 42.550392] ? mm_update_next_owner+0x980/0x980 [ 42.555041] ? print_usage_bug+0xc0/0xc0 [ 42.559081] ? lock_downgrade+0x8e0/0x8e0 [ 42.563209] ? lock_downgrade+0x8e0/0x8e0 [ 42.567340] ? kasan_check_read+0x11/0x20 [ 42.571467] ? do_raw_spin_unlock+0x9e/0x2e0 [ 42.575857] ? __lock_acquire+0x7f5/0x5140 [ 42.580071] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 42.584806] ? _raw_spin_unlock_bh+0x30/0x40 [ 42.589196] ? debug_check_no_locks_freed+0x310/0x310 [ 42.594368] ? smc_poll+0x294/0xcf0 [ 42.597990] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.603504] ? __fget_light+0x2ef/0x430 [ 42.607469] ? fget_raw+0x20/0x20 [ 42.610905] ? __check_object_size+0x95/0x5d9 [ 42.615384] ? graph_lock+0x170/0x170 [ 42.619164] ? sock_poll+0x2be/0x390 [ 42.622860] ? sock_ioctl+0x680/0x680 [ 42.626644] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.632158] ? memset+0x31/0x40 [ 42.635418] ? find_held_lock+0x36/0x1c0 [ 42.639459] ? lock_downgrade+0x8e0/0x8e0 [ 42.643588] do_group_exit+0x16f/0x430 [ 42.647454] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 42.652013] ? __ia32_sys_exit+0x50/0x50 [ 42.656052] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.660526] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.665522] get_signal+0x886/0x1960 [ 42.669218] ? ptrace_notify+0x130/0x130 [ 42.673257] ? lock_downgrade+0x8e0/0x8e0 [ 42.677385] ? lock_downgrade+0x8e0/0x8e0 [ 42.681511] ? kasan_check_read+0x11/0x20 [ 42.685640] ? release_sock+0x1e2/0x2b0 [ 42.689599] ? trace_hardirqs_on+0xd/0x10 [ 42.693727] ? __local_bh_enable_ip+0x161/0x230 [ 42.698378] do_signal+0x98/0x2040 [ 42.701899] ? __release_sock+0x3a0/0x3a0 [ 42.706026] ? setup_sigcontext+0x7d0/0x7d0 [ 42.710328] ? smc_connect+0xaf/0x260 [ 42.714120] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.719637] ? __sys_connect+0x1d1/0x4c0 [ 42.723681] ? __ia32_sys_accept+0xb0/0xb0 [ 42.727902] ? exit_to_usermode_loop+0x87/0x310 [ 42.732551] exit_to_usermode_loop+0x28a/0x310 [ 42.737114] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 42.741934] ? do_syscall_64+0x92/0x800 [ 42.745888] do_syscall_64+0x6ac/0x800 [ 42.749751] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 42.754575] ? syscall_return_slowpath+0x5c0/0x5c0 [ 42.759482] ? syscall_return_slowpath+0x30f/0x5c0 [ 42.764391] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 42.769736] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.774557] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.779723] RIP: 0033:0x455389 [ 42.782888] RSP: 002b:00007ffca25c7a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 42.790574] RAX: 0000000000000001 RBX: 000000000128a914 RCX: 0000000000455389 [ 42.797820] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020000100 [ 42.805070] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 42.812318] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 42.819571] R13: 000000000000046b R14: 00000000006f9aa8 R15: 000000000000a867 [ 42.827318] Dumping ftrace buffer: [ 42.830912] (ftrace buffer empty) [ 42.834600] Kernel Offset: disabled [ 42.838209] Rebooting in 86400 seconds..