[....] Starting enhanced syslogd: rsyslogd[ 15.317576] audit: type=1400 audit(1519333126.051:5): avc: denied { syslog } for pid=4004 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.413504] audit: type=1400 audit(1519333130.147:6): avc: denied { map } for pid=4145 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. executing program [ 26.023389] audit: type=1400 audit(1519333136.757:7): avc: denied { map } for pid=4159 comm="syzkaller897796" path="/root/syzkaller897796535" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 26.026983] WARNING: CPU: 1 PID: 4159 at ./include/net/sock.h:638 smc_unhash_sk+0x335/0x450 [ 26.057784] Kernel panic - not syncing: panic_on_warn set ... [ 26.057784] [ 26.065121] CPU: 1 PID: 4159 Comm: syzkaller897796 Not tainted 4.16.0-rc2+ #324 [ 26.072546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.081873] Call Trace: [ 26.084441] dump_stack+0x194/0x24d [ 26.088045] ? arch_local_irq_restore+0x53/0x53 [ 26.092868] ? vsnprintf+0x1ed/0x1900 [ 26.096647] panic+0x1e4/0x41c [ 26.099813] ? refcount_error_report+0x214/0x214 [ 26.104543] ? show_regs_print_info+0x18/0x18 [ 26.109014] ? __destroy_inode+0x660/0x660 [ 26.113225] ? __warn+0x1c1/0x200 [ 26.116656] ? smc_unhash_sk+0x335/0x450 [ 26.120695] __warn+0x1dc/0x200 [ 26.123947] ? smc_unhash_sk+0x335/0x450 [ 26.128683] report_bug+0x211/0x2d0 [ 26.132298] fixup_bug.part.11+0x37/0x80 [ 26.136335] do_error_trap+0x2d7/0x3e0 [ 26.140204] ? math_error+0x400/0x400 [ 26.143976] ? reacquire_held_locks+0x1f9/0x3e0 [ 26.148622] ? lock_acquire+0x1d5/0x580 [ 26.152569] ? lock_acquire+0x1d5/0x580 [ 26.156606] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.161427] do_invalid_op+0x1b/0x20 [ 26.165115] invalid_op+0x58/0x80 [ 26.168546] RIP: 0010:smc_unhash_sk+0x335/0x450 [ 26.173199] RSP: 0018:ffff8801be307198 EFLAGS: 00010293 [ 26.178542] RAX: ffff8801b6f26300 RBX: 1ffff10037c60e37 RCX: ffffffff85a3f1f5 [ 26.185789] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 1ffff10037c60e3b [ 26.193034] RBP: ffff8801be307280 R08: dffffc0000000000 R09: 0000000000000004 [ 26.200369] R10: ffff8801be307050 R11: 0000000000000004 R12: ffff8801be307258 [ 26.207612] R13: ffffffff87669b40 R14: ffff8801bf21a7c0 R15: 1ffff10037c60e3b [ 26.214876] ? smc_unhash_sk+0x335/0x450 [ 26.218914] ? smc_unhash_sk+0x335/0x450 [ 26.222957] ? smc_hash_sk+0x2f0/0x2f0 [ 26.226824] ? release_sock+0x1d4/0x2a0 [ 26.230776] ? __local_bh_enable_ip+0x121/0x230 [ 26.235419] ? __release_sock+0x360/0x360 [ 26.239538] ? smc_release+0x23c/0x580 [ 26.243407] ? trace_hardirqs_on+0xd/0x10 [ 26.247532] ? __local_bh_enable_ip+0x121/0x230 [ 26.252179] smc_release+0x321/0x580 [ 26.255959] sock_release+0x8d/0x1e0 [ 26.259646] ? sock_alloc_file+0x560/0x560 [ 26.263862] sock_close+0x16/0x20 [ 26.267291] __fput+0x327/0x7e0 [ 26.270546] ? fput+0x140/0x140 [ 26.273807] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.278288] ____fput+0x15/0x20 [ 26.281905] task_work_run+0x199/0x270 [ 26.285764] ? task_work_cancel+0x210/0x210 [ 26.290057] ? _raw_spin_unlock+0x22/0x30 [ 26.294187] ? switch_task_namespaces+0x87/0xc0 [ 26.298835] do_exit+0x9bb/0x1ad0 [ 26.302266] ? mm_update_next_owner+0x930/0x930 [ 26.306909] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.312069] ? __local_bh_enable_ip+0x121/0x230 [ 26.316721] ? refcount_dec_and_test+0x1a/0x20 [ 26.321363] ? smc_poll+0x25a/0xb20 [ 26.325054] ? smc_tcp_listen_work+0xea0/0xea0 [ 26.329604] ? find_held_lock+0x35/0x1d0 [ 26.333645] ? __might_fault+0x110/0x1d0 [ 26.337679] ? lock_downgrade+0x980/0x980 [ 26.342146] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.347328] ? __fget_light+0x2b2/0x3c0 [ 26.351274] ? fget_raw+0x20/0x20 [ 26.354698] ? __check_object_size+0x8b/0x530 [ 26.359700] ? check_noncircular+0x20/0x20 [ 26.363907] ? get_net_ns+0x20/0x20 [ 26.367601] ? poll_freewait+0x1c1/0x250 [ 26.371635] ? memset+0x31/0x40 [ 26.374893] ? find_held_lock+0x35/0x1d0 [ 26.378933] ? get_signal+0x7a9/0x16d0 [ 26.382799] ? lock_downgrade+0x980/0x980 [ 26.386927] do_group_exit+0x149/0x400 [ 26.390785] ? do_raw_spin_trylock+0x190/0x190 [ 26.395340] ? SyS_exit+0x30/0x30 [ 26.398772] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.403244] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.408239] get_signal+0x73a/0x16d0 [ 26.411947] ? ptrace_notify+0x130/0x130 [ 26.415987] ? release_sock+0x1d4/0x2a0 [ 26.419935] ? lock_downgrade+0x980/0x980 [ 26.424054] ? lock_downgrade+0x980/0x980 [ 26.428174] ? lock_release+0xa40/0xa40 [ 26.432130] ? __local_bh_enable_ip+0x121/0x230 [ 26.436773] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.441760] ? release_sock+0x1d4/0x2a0 [ 26.445703] ? trace_hardirqs_on+0xd/0x10 [ 26.449823] do_signal+0x90/0x1e90 [ 26.453332] ? release_sock+0x1d4/0x2a0 [ 26.457285] ? __release_sock+0x360/0x360 [ 26.461410] ? setup_sigcontext+0x7d0/0x7d0 [ 26.465705] ? kernel_connect+0x6a/0x90 [ 26.469653] ? smc_connect+0x1c2/0x240 [ 26.473646] ? SYSC_connect+0x2e0/0x4a0 [ 26.477609] ? SYSC_bind+0x410/0x410 [ 26.481407] ? exit_to_usermode_loop+0x8c/0x2f0 [ 26.486063] exit_to_usermode_loop+0x258/0x2f0 [ 26.490621] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 26.496135] ? do_syscall_64+0xb6/0x940 [ 26.500090] do_syscall_64+0x6e5/0x940 [ 26.503953] ? __do_page_fault+0xc90/0xc90 [ 26.508166] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.512895] ? syscall_return_slowpath+0x550/0x550 [ 26.519021] ? syscall_return_slowpath+0x2ac/0x550 [ 26.523925] ? prepare_exit_to_usermode+0x350/0x350 [ 26.528914] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 26.534254] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.539075] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 26.544250] RIP: 0033:0x43fd49 [ 26.547433] RSP: 002b:00007ffdf287cd68 EFLAGS: 00000286 ORIG_RAX: 0000000000000007 [ 26.555131] RAX: 0000000000000001 RBX: ffffffffffffffff RCX: 000000000043fd49 [ 26.562371] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020000000 [ 26.569610] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 26.576847] R10: 00000000004002c8 R11: 0000000000000286 R12: 0000000000401670 [ 26.584090] R13: 0000000000401700 R14: 0000000000000000 R15: 0000000000000000 [ 26.591857] Dumping ftrace buffer: [ 26.595478] (ftrace buffer empty) [ 26.599163] Kernel Offset: disabled [ 26.602767] Rebooting in 86400 seconds..