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 '10.128.10.5' (ECDSA) to the list of known hosts. 2018/03/25 13:19:13 parsed 1 programs 2018/03/25 13:19:13 executed programs: 0 syzkaller login: [ 35.595506] IPVS: ftp: loaded support on port[0] = 21 [ 35.635724] WARNING: CPU: 0 PID: 4211 at ./include/net/sock.h:638 smc_unhash_sk+0x335/0x450 [ 35.644396] Kernel panic - not syncing: panic_on_warn set ... [ 35.644396] [ 35.651742] CPU: 0 PID: 4211 Comm: syz-executor0 Not tainted 4.16.0-rc6+ #1 [ 35.658824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.668237] Call Trace: [ 35.670817] dump_stack+0x194/0x24d [ 35.674425] ? arch_local_irq_restore+0x53/0x53 [ 35.679083] ? vsnprintf+0x1ed/0x1900 [ 35.682862] panic+0x1e4/0x41c [ 35.686028] ? refcount_error_report+0x214/0x214 [ 35.690757] ? show_regs_print_info+0x18/0x18 [ 35.695229] ? __destroy_inode+0x660/0x660 [ 35.699443] ? __warn+0x1c1/0x200 [ 35.702870] ? smc_unhash_sk+0x335/0x450 [ 35.706905] __warn+0x1dc/0x200 [ 35.710159] ? smc_unhash_sk+0x335/0x450 [ 35.714196] report_bug+0x1f4/0x2b0 [ 35.717820] fixup_bug.part.11+0x37/0x80 [ 35.721867] do_error_trap+0x2d7/0x3e0 [ 35.725731] ? math_error+0x400/0x400 [ 35.729518] ? reacquire_held_locks+0x1f9/0x3e0 [ 35.734188] ? lock_acquire+0x1d5/0x580 [ 35.738136] ? lock_acquire+0x1d5/0x580 [ 35.742092] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.746915] do_invalid_op+0x1b/0x20 [ 35.750608] invalid_op+0x1b/0x40 [ 35.754048] RIP: 0010:smc_unhash_sk+0x335/0x450 [ 35.758706] RSP: 0018:ffff8801b967f198 EFLAGS: 00010293 [ 35.764081] RAX: ffff8801b5336140 RBX: 1ffff100372cfe37 RCX: ffffffff85a44515 [ 35.771501] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 1ffff100372cfe3b [ 35.778749] RBP: ffff8801b967f280 R08: dffffc0000000000 R09: 0000000000000004 [ 35.786002] R10: ffff8801b967f050 R11: 0000000000000004 R12: ffff8801b967f258 [ 35.793257] R13: ffffffff87672540 R14: ffff8801c4e597c0 R15: 1ffff100372cfe3b [ 35.800519] ? smc_unhash_sk+0x335/0x450 [ 35.804559] ? smc_unhash_sk+0x335/0x450 [ 35.808606] ? smc_hash_sk+0x2f0/0x2f0 [ 35.812555] ? release_sock+0x1d4/0x2a0 [ 35.816514] ? __local_bh_enable_ip+0x121/0x230 [ 35.821154] ? __release_sock+0x360/0x360 [ 35.825277] ? smc_release+0x23d/0x580 [ 35.829139] ? trace_hardirqs_on+0xd/0x10 [ 35.833260] ? __local_bh_enable_ip+0x121/0x230 [ 35.837906] smc_release+0x322/0x580 [ 35.841600] sock_release+0x8d/0x1e0 [ 35.845286] ? sock_alloc_file+0x560/0x560 [ 35.849495] sock_close+0x16/0x20 [ 35.852929] __fput+0x327/0x7e0 [ 35.857231] ? fput+0x140/0x140 [ 35.860488] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.864972] ____fput+0x15/0x20 [ 35.868278] task_work_run+0x199/0x270 [ 35.872165] ? task_work_cancel+0x210/0x210 [ 35.876469] ? _raw_spin_unlock+0x22/0x30 [ 35.880590] ? switch_task_namespaces+0x87/0xc0 [ 35.885254] do_exit+0x9bb/0x1ad0 [ 35.888689] ? mm_update_next_owner+0x930/0x930 [ 35.893684] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.898849] ? save_stack+0x43/0xd0 [ 35.902463] ? __kasan_slab_free+0x11a/0x170 [ 35.906852] ? kasan_slab_free+0xe/0x10 [ 35.910807] ? kfree+0xd9/0x260 [ 35.914066] ? do_sys_poll+0xc4e/0x1050 [ 35.918020] ? SyS_poll+0x10d/0x450 [ 35.921639] ? do_syscall_64+0x281/0x940 [ 35.925695] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.931229] ? _raw_spin_unlock_irqrestore+0xa6/0xc0 [ 35.936313] ? debug_check_no_obj_freed+0x3da/0xf1f [ 35.941320] ? smc_tcp_listen_work+0xe60/0xe60 [ 35.945905] ? free_obj_work+0x690/0x690 [ 35.949952] ? __fget_light+0x2b2/0x3c0 [ 35.953916] ? fget_raw+0x20/0x20 [ 35.957357] ? __check_object_size+0x8b/0x530 [ 35.961838] ? trace_hardirqs_off+0xd/0x10 [ 35.966058] ? trace_hardirqs_off+0x10/0x10 [ 35.970455] ? kfree+0xf3/0x260 [ 35.973727] ? do_sys_poll+0xc4e/0x1050 [ 35.977685] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.982688] ? memset+0x31/0x40 [ 35.985950] ? find_held_lock+0x35/0x1d0 [ 35.989998] ? get_signal+0x7a9/0x16d0 [ 35.993867] ? lock_downgrade+0x980/0x980 [ 35.998000] do_group_exit+0x149/0x400 [ 36.001867] ? do_raw_spin_trylock+0x190/0x190 [ 36.006435] ? SyS_exit+0x30/0x30 [ 36.009887] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.014384] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.019394] get_signal+0x73a/0x16d0 [ 36.023113] ? ptrace_notify+0x130/0x130 [ 36.027184] ? lock_release+0xa40/0xa40 [ 36.031162] ? __local_bh_enable_ip+0x121/0x230 [ 36.035854] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.040880] ? release_sock+0x1d4/0x2a0 [ 36.044840] ? trace_hardirqs_on+0xd/0x10 [ 36.048968] do_signal+0x90/0x1e90 [ 36.052484] ? release_sock+0x1d4/0x2a0 [ 36.056434] ? __release_sock+0x360/0x360 [ 36.060560] ? setup_sigcontext+0x7d0/0x7d0 [ 36.064859] ? kernel_connect+0x6a/0x90 [ 36.068817] ? smc_connect+0x1c2/0x240 [ 36.072709] ? SYSC_connect+0x2e0/0x4a0 [ 36.076680] ? SYSC_bind+0x410/0x410 [ 36.080406] ? exit_to_usermode_loop+0x8c/0x2f0 [ 36.085083] exit_to_usermode_loop+0x258/0x2f0 [ 36.089675] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 36.095364] ? do_syscall_64+0xb7/0x940 [ 36.099338] do_syscall_64+0x6ec/0x940 [ 36.103205] ? __do_page_fault+0xc90/0xc90 [ 36.107427] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.112177] ? syscall_return_slowpath+0x550/0x550 [ 36.117096] ? syscall_return_slowpath+0x2ac/0x550 [ 36.122014] ? prepare_exit_to_usermode+0x350/0x350 [ 36.127033] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 36.132379] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.137236] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 36.142421] RIP: 0033:0x454879 [ 36.145606] RSP: 002b:00007ffeb5a5c6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 36.153318] RAX: 0000000000000001 RBX: 0000000002549914 RCX: 0000000000454879 [ 36.160587] RDX: 0000000000000000 RSI: 0000000000000269 RDI: 00000000200000c0 [ 36.167841] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 36.175109] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 36.182365] R13: 0000000000000458 R14: 00000000006f78e0 R15: 0000000000000003 [ 36.190245] Dumping ftrace buffer: [ 36.193950] (ftrace buffer empty) [ 36.197638] Kernel Offset: disabled [ 36.201244] Rebooting in 86400 seconds..