[....] Starting enhanced syslogd: rsyslogd[ 16.868244] audit: type=1400 audit(1519332630.096:5): avc: denied { syslog } for pid=4114 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.626509] audit: type=1400 audit(1519332634.855:6): avc: denied { map } for pid=4252 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 '10.128.15.219' (ECDSA) to the list of known hosts. executing program [ 27.925170] audit: type=1400 audit(1519332641.153:7): avc: denied { map } for pid=4266 comm="syzkaller496791" path="/root/syzkaller496791865" 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 [ 27.930171] WARNING: CPU: 0 PID: 4266 at ./include/net/sock.h:638 smc_unhash_sk+0x335/0x450 [ 27.959606] Kernel panic - not syncing: panic_on_warn set ... [ 27.959606] [ 27.966943] CPU: 0 PID: 4266 Comm: syzkaller496791 Not tainted 4.16.0-rc2+ #234 [ 27.974374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.983704] Call Trace: [ 27.986274] dump_stack+0x194/0x24d [ 27.989880] ? arch_local_irq_restore+0x53/0x53 [ 27.994526] ? vsnprintf+0x1ed/0x1900 [ 27.998306] panic+0x1e4/0x41c [ 28.001474] ? refcount_error_report+0x214/0x214 [ 28.006201] ? show_regs_print_info+0x18/0x18 [ 28.010671] ? __destroy_inode+0x660/0x660 [ 28.014885] ? __warn+0x1c1/0x200 [ 28.018316] ? smc_unhash_sk+0x335/0x450 [ 28.022351] __warn+0x1dc/0x200 [ 28.025780] ? smc_unhash_sk+0x335/0x450 [ 28.029817] report_bug+0x211/0x2d0 [ 28.033430] fixup_bug.part.11+0x37/0x80 [ 28.037465] do_error_trap+0x2d7/0x3e0 [ 28.041327] ? math_error+0x400/0x400 [ 28.045099] ? reacquire_held_locks+0x1f9/0x3e0 [ 28.049746] ? lock_acquire+0x1d5/0x580 [ 28.053693] ? lock_acquire+0x1d5/0x580 [ 28.057646] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.062475] do_invalid_op+0x1b/0x20 [ 28.066163] invalid_op+0x58/0x80 [ 28.069588] RIP: 0010:smc_unhash_sk+0x335/0x450 [ 28.074225] RSP: 0018:ffff8801d2d2f148 EFLAGS: 00010293 [ 28.079564] RAX: ffff8801b3c22200 RBX: 1ffff1003a5a5e2d RCX: ffffffff85a3f1f5 [ 28.087030] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 1ffff1003a5a5e31 [ 28.094295] RBP: ffff8801d2d2f230 R08: dffffc0000000000 R09: 0000000000000004 [ 28.101541] R10: ffff8801d2d2f000 R11: 0000000000000004 R12: ffff8801d2d2f208 [ 28.108783] R13: ffffffff87669b40 R14: ffff8801d7dea7c0 R15: 1ffff1003a5a5e31 [ 28.116050] ? smc_unhash_sk+0x335/0x450 [ 28.120093] ? smc_unhash_sk+0x335/0x450 [ 28.124146] ? smc_hash_sk+0x2f0/0x2f0 [ 28.128010] ? release_sock+0x1d4/0x2a0 [ 28.131960] ? __local_bh_enable_ip+0x121/0x230 [ 28.136606] ? __release_sock+0x360/0x360 [ 28.140732] ? smc_release+0x23c/0x580 [ 28.144593] ? trace_hardirqs_on+0xd/0x10 [ 28.148715] ? __local_bh_enable_ip+0x121/0x230 [ 28.153363] smc_release+0x321/0x580 [ 28.157055] sock_release+0x8d/0x1e0 [ 28.160740] ? sock_alloc_file+0x560/0x560 [ 28.164958] sock_close+0x16/0x20 [ 28.168386] __fput+0x327/0x7e0 [ 28.171655] ? fput+0x140/0x140 [ 28.174911] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.179384] ____fput+0x15/0x20 [ 28.182640] task_work_run+0x199/0x270 [ 28.186504] ? task_work_cancel+0x210/0x210 [ 28.190802] ? _raw_spin_unlock+0x22/0x30 [ 28.194935] ? switch_task_namespaces+0x87/0xc0 [ 28.199591] do_exit+0x9bb/0x1ad0 [ 28.203024] ? mm_update_next_owner+0x930/0x930 [ 28.207668] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 28.212836] ? __local_bh_enable_ip+0x121/0x230 [ 28.217483] ? refcount_dec_and_test+0x1a/0x20 [ 28.222050] ? smc_poll+0x25a/0xb20 [ 28.225666] ? smc_tcp_listen_work+0xea0/0xea0 [ 28.230231] ? find_held_lock+0x35/0x1d0 [ 28.234286] ? __might_fault+0x110/0x1d0 [ 28.238320] ? lock_downgrade+0x980/0x980 [ 28.242438] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 28.247600] ? __fget_light+0x2b2/0x3c0 [ 28.251545] ? fget_raw+0x20/0x20 [ 28.254981] ? __check_object_size+0x8b/0x530 [ 28.259453] ? check_noncircular+0x20/0x20 [ 28.263658] ? get_net_ns+0x20/0x20 [ 28.267259] ? poll_freewait+0x1c1/0x250 [ 28.271296] ? memset+0x31/0x40 [ 28.274549] ? find_held_lock+0x35/0x1d0 [ 28.278591] ? get_signal+0x7a9/0x16d0 [ 28.282452] ? lock_downgrade+0x980/0x980 [ 28.286588] do_group_exit+0x149/0x400 [ 28.290447] ? do_raw_spin_trylock+0x190/0x190 [ 28.295001] ? SyS_exit+0x30/0x30 [ 28.298435] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.302913] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.307916] get_signal+0x73a/0x16d0 [ 28.311610] ? ptrace_notify+0x130/0x130 [ 28.315645] ? release_sock+0x1d4/0x2a0 [ 28.319592] ? lock_downgrade+0x980/0x980 [ 28.323715] ? lock_downgrade+0x980/0x980 [ 28.327833] ? lock_release+0xa40/0xa40 [ 28.331785] ? __local_bh_enable_ip+0x121/0x230 [ 28.336860] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.341858] ? release_sock+0x1d4/0x2a0 [ 28.345811] ? trace_hardirqs_on+0xd/0x10 [ 28.349933] do_signal+0x90/0x1e90 [ 28.353443] ? release_sock+0x1d4/0x2a0 [ 28.357390] ? __release_sock+0x360/0x360 [ 28.361512] ? setup_sigcontext+0x7d0/0x7d0 [ 28.365806] ? kernel_connect+0x6a/0x90 [ 28.369755] ? smc_connect+0x1c2/0x240 [ 28.373617] ? SYSC_connect+0x2e0/0x4a0 [ 28.377564] ? SYSC_bind+0x410/0x410 [ 28.381263] ? exit_to_usermode_loop+0x8c/0x2f0 [ 28.385909] exit_to_usermode_loop+0x258/0x2f0 [ 28.390473] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.395985] ? do_fast_syscall_32+0x156/0xf9f [ 28.400461] do_fast_syscall_32+0xbe6/0xf9f [ 28.404773] ? do_int80_syscall_32+0x9c0/0x9c0 [ 28.409325] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.414053] ? syscall_return_slowpath+0x550/0x550 [ 28.418955] ? syscall_return_slowpath+0x2ac/0x550 [ 28.423856] ? prepare_exit_to_usermode+0x350/0x350 [ 28.428844] ? sysret32_from_system_call+0x5/0x3c [ 28.433661] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.438480] entry_SYSENTER_compat+0x70/0x7f [ 28.442859] RIP: 0023:0xf7fb9c79 [ 28.446208] RSP: 002b:00000000ffabc0dc EFLAGS: 00000217 ORIG_RAX: 00000000000000a8 [ 28.453888] RAX: 0000000000000001 RBX: 0000000020000000 RCX: 0000000000000001 [ 28.461130] RDX: 0000000000000000 RSI: 000000000000016a RDI: 0000000000000003 [ 28.468371] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 28.475614] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 28.483607] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 28.491451] Dumping ftrace buffer: [ 28.495074] (ftrace buffer empty) [ 28.498769] Kernel Offset: disabled [ 28.502378] Rebooting in 86400 seconds..