[....] Starting enhanced syslogd: rsyslogd[ 16.085404] audit: type=1400 audit(1519332725.116:5): avc: denied { syslog } for pid=4005 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 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: [ 22.091094] audit: type=1400 audit(1519332731.121:6): avc: denied { map } for pid=4144 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 '10.128.15.210' (ECDSA) to the list of known hosts. executing program [ 28.440153] audit: type=1400 audit(1519332737.470:7): avc: denied { map } for pid=4158 comm="syzkaller138231" path="/root/syzkaller138231958" 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 [ 28.445493] WARNING: CPU: 1 PID: 4158 at ./include/net/sock.h:639 smc_unhash_sk+0x335/0x450 [ 28.474639] Kernel panic - not syncing: panic_on_warn set ... [ 28.474639] [ 28.481984] CPU: 1 PID: 4158 Comm: syzkaller138231 Not tainted 4.16.0-rc2+ #238 [ 28.489407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.498742] Call Trace: [ 28.501312] dump_stack+0x194/0x24d [ 28.504945] ? arch_local_irq_restore+0x53/0x53 [ 28.509606] ? vsnprintf+0x1ed/0x1900 [ 28.513403] panic+0x1e4/0x41c [ 28.516573] ? refcount_error_report+0x214/0x214 [ 28.521300] ? show_regs_print_info+0x18/0x18 [ 28.525776] ? __destroy_inode+0x660/0x660 [ 28.529998] ? __warn+0x1c1/0x200 [ 28.533447] ? smc_unhash_sk+0x335/0x450 [ 28.537485] __warn+0x1dc/0x200 [ 28.540744] ? smc_unhash_sk+0x335/0x450 [ 28.544788] report_bug+0x211/0x2d0 [ 28.548408] fixup_bug.part.11+0x37/0x80 [ 28.552447] do_error_trap+0x2d7/0x3e0 [ 28.556313] ? math_error+0x400/0x400 [ 28.560089] ? reacquire_held_locks+0x1f9/0x3e0 [ 28.564743] ? lock_acquire+0x1d5/0x580 [ 28.568692] ? lock_acquire+0x1d5/0x580 [ 28.572648] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.577509] do_invalid_op+0x1b/0x20 [ 28.581201] invalid_op+0x58/0x80 [ 28.584629] RIP: 0010:smc_unhash_sk+0x335/0x450 [ 28.589270] RSP: 0018:ffff8801bf4df198 EFLAGS: 00010293 [ 28.594623] RAX: ffff8801b7c1e040 RBX: 1ffff10037e9be37 RCX: ffffffff85a3f805 [ 28.601872] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 1ffff10037e9be3b [ 28.609118] RBP: ffff8801bf4df280 R08: dffffc0000000000 R09: 0000000000000004 [ 28.616364] R10: ffff8801bf4df050 R11: 0000000000000004 R12: ffff8801bf4df258 [ 28.623612] R13: ffffffff8766a2e0 R14: ffff8801bf7887c0 R15: 1ffff10037e9be3b [ 28.630891] ? smc_unhash_sk+0x335/0x450 [ 28.634935] ? smc_unhash_sk+0x335/0x450 [ 28.638986] ? smc_hash_sk+0x2f0/0x2f0 [ 28.642880] ? release_sock+0x1d4/0x2a0 [ 28.646838] ? __local_bh_enable_ip+0x121/0x230 [ 28.651489] ? __release_sock+0x360/0x360 [ 28.655617] ? smc_release+0x23c/0x580 [ 28.659487] ? trace_hardirqs_on+0xd/0x10 [ 28.663616] ? __local_bh_enable_ip+0x121/0x230 [ 28.668282] smc_release+0x321/0x580 [ 28.671979] sock_release+0x8d/0x1e0 [ 28.675682] ? sock_alloc_file+0x560/0x560 [ 28.679894] sock_close+0x16/0x20 [ 28.683324] __fput+0x327/0x7e0 [ 28.686583] ? fput+0x140/0x140 [ 28.689856] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.694332] ____fput+0x15/0x20 [ 28.697590] task_work_run+0x199/0x270 [ 28.701464] ? task_work_cancel+0x210/0x210 [ 28.705768] ? _raw_spin_unlock+0x22/0x30 [ 28.709894] ? switch_task_namespaces+0x87/0xc0 [ 28.714547] do_exit+0x9bb/0x1ad0 [ 28.717982] ? mm_update_next_owner+0x930/0x930 [ 28.722632] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 28.727798] ? __local_bh_enable_ip+0x121/0x230 [ 28.732449] ? refcount_dec_and_test+0x1a/0x20 [ 28.737006] ? smc_poll+0x25a/0xb20 [ 28.740615] ? smc_tcp_listen_work+0xea0/0xea0 [ 28.745177] ? find_held_lock+0x35/0x1d0 [ 28.749227] ? __might_fault+0x110/0x1d0 [ 28.753271] ? lock_downgrade+0x980/0x980 [ 28.757399] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 28.762573] ? __fget_light+0x2b2/0x3c0 [ 28.766530] ? fget_raw+0x20/0x20 [ 28.769965] ? __check_object_size+0x8b/0x530 [ 28.774467] ? check_noncircular+0x20/0x20 [ 28.778694] ? sock_ioctl+0x610/0x610 [ 28.782476] ? poll_freewait+0x1c1/0x250 [ 28.786516] ? memset+0x31/0x40 [ 28.789775] ? find_held_lock+0x35/0x1d0 [ 28.793820] ? get_signal+0x7a9/0x16d0 [ 28.797698] ? lock_downgrade+0x980/0x980 [ 28.801835] do_group_exit+0x149/0x400 [ 28.805701] ? do_raw_spin_trylock+0x190/0x190 [ 28.810269] ? SyS_exit+0x30/0x30 [ 28.813698] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.818172] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.823167] get_signal+0x73a/0x16d0 [ 28.826865] ? ptrace_notify+0x130/0x130 [ 28.830917] ? release_sock+0x1d4/0x2a0 [ 28.834868] ? lock_downgrade+0x980/0x980 [ 28.838994] ? lock_downgrade+0x980/0x980 [ 28.843120] ? lock_release+0xa40/0xa40 [ 28.847078] ? __local_bh_enable_ip+0x121/0x230 [ 28.851734] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.856733] ? release_sock+0x1d4/0x2a0 [ 28.860684] ? trace_hardirqs_on+0xd/0x10 [ 28.864815] do_signal+0x90/0x1e90 [ 28.868334] ? release_sock+0x1d4/0x2a0 [ 28.872286] ? __release_sock+0x360/0x360 [ 28.876418] ? setup_sigcontext+0x7d0/0x7d0 [ 28.880729] ? kernel_connect+0x6a/0x90 [ 28.884690] ? smc_connect+0x1c2/0x240 [ 28.888561] ? SYSC_connect+0x2e0/0x4a0 [ 28.892525] ? SYSC_bind+0x410/0x410 [ 28.896234] ? exit_to_usermode_loop+0x8c/0x2f0 [ 28.900894] exit_to_usermode_loop+0x258/0x2f0 [ 28.905472] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.911001] ? do_syscall_64+0xb6/0x940 [ 28.914958] do_syscall_64+0x6e5/0x940 [ 28.918824] ? __do_page_fault+0xc90/0xc90 [ 28.923060] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.928574] ? syscall_return_slowpath+0x550/0x550 [ 28.933481] ? syscall_return_slowpath+0x2ac/0x550 [ 28.938392] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.943742] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.948569] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.953739] RIP: 0033:0x43fd49 [ 28.956910] RSP: 002b:00007ffee563e948 EFLAGS: 00000286 ORIG_RAX: 0000000000000007 [ 28.964596] RAX: 0000000000000001 RBX: ffffffffffffffff RCX: 000000000043fd49 [ 28.971855] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020000000 [ 28.979103] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 28.986351] R10: 00000000004002c8 R11: 0000000000000286 R12: 0000000000401670 [ 28.993600] R13: 0000000000401700 R14: 0000000000000000 R15: 0000000000000000 [ 29.001726] Dumping ftrace buffer: [ 29.005406] (ftrace buffer empty) [ 29.009092] Kernel Offset: disabled [ 29.012698] Rebooting in 86400 seconds..