[....] Starting enhanced syslogd: rsyslogd[ 17.669734] audit: type=1400 audit(1522009578.939:5): avc: denied { syslog } for pid=4121 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: [ 23.752465] audit: type=1400 audit(1522009585.022:6): avc: denied { map } for pid=4261 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 36.191756] audit: type=1400 audit(1522009597.461:7): avc: denied { map } for pid=4277 comm="syzkaller549428" path="/root/syzkaller549428900" 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 [ 36.194359] kasan: CONFIG_KASAN_INLINE enabled [ 36.222339] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.229713] general protection fault: 0000 [#1] SMP KASAN [ 36.235225] Dumping ftrace buffer: [ 36.238736] (ftrace buffer empty) [ 36.242423] Modules linked in: [ 36.245596] CPU: 0 PID: 4277 Comm: syzkaller549428 Not tainted 4.16.0-rc6+ #280 [ 36.253011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.262344] RIP: 0010:tipc_sk_fill_sock_diag+0x42d/0xc00 [ 36.267761] RSP: 0018:ffff8801b017eff0 EFLAGS: 00010206 [ 36.273093] RAX: 0000000000000000 RBX: 1ffff1003602fe04 RCX: 000000000000002b [ 36.280331] RDX: dffffc0000000000 RSI: 1ffff10035d4b577 RDI: 0000000000000158 [ 36.287571] RBP: ffff8801b017f2a8 R08: 1ffff1003602fdbf R09: 0000000000000000 [ 36.294819] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d1637740 [ 36.302067] R13: ffff8801b0d50d40 R14: ffff8801b017f280 R15: 0000000000000000 [ 36.309312] FS: 00000000014a6880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.317509] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.323556] CR2: 0000000020005000 CR3: 00000001b01b3005 CR4: 00000000001606f0 [ 36.330803] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.338044] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.345283] Call Trace: [ 36.347854] ? tipc_diag_dump+0x30/0x30 [ 36.351799] ? __tipc_nl_add_sk+0x3e0/0x3e0 [ 36.356094] ? save_stack+0xa3/0xd0 [ 36.359690] ? save_stack+0x43/0xd0 [ 36.363291] ? kasan_kmalloc+0xad/0xe0 [ 36.367151] ? trace_hardirqs_off+0x10/0x10 [ 36.371444] ? netlink_dump+0x545/0xcf0 [ 36.375389] ? netlink_rcv_skb+0x14b/0x380 [ 36.379593] ? sock_diag_rcv+0x2a/0x40 [ 36.383448] ? netlink_unicast+0x4c4/0x6b0 [ 36.387654] ? netlink_sendmsg+0xa4a/0xe60 [ 36.391859] ? sock_sendmsg+0xca/0x110 [ 36.395715] ? __sys_sendmsg+0xe5/0x210 [ 36.399660] ? do_syscall_64+0x281/0x940 [ 36.403696] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 36.409038] ? lock_acquire+0x1d5/0x580 [ 36.412980] ? trace_hardirqs_off+0x10/0x10 [ 36.417269] ? lock_acquire+0x1d5/0x580 [ 36.421212] ? tipc_nl_sk_walk+0x53d/0xb60 [ 36.425423] ? tipc_nl_sk_walk+0x2bd/0xb60 [ 36.430324] ? lock_release+0xa40/0xa40 [ 36.434268] ? skb_put+0x155/0x1d0 [ 36.437780] ? memset+0x31/0x40 [ 36.441036] ? __nlmsg_put+0x14c/0x1b0 [ 36.444895] __tipc_add_sock_diag+0x20e/0x330 [ 36.449582] tipc_nl_sk_walk+0x565/0xb60 [ 36.453617] ? tipc_sock_diag_handler_dump+0x2c0/0x2c0 [ 36.458954] ? tipc_release+0xff0/0xff0 [ 36.462920] ? skb_copy_and_csum_dev+0x370/0x370 [ 36.467657] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 36.472476] ? sock_diag_rcv+0x1b/0x40 [ 36.476338] ? lock_downgrade+0x980/0x980 [ 36.480460] ? wait_for_completion+0x770/0x770 [ 36.485099] ? mutex_lock_io_nested+0x1900/0x1900 [ 36.489915] tipc_diag_dump+0x24/0x30 [ 36.493687] netlink_dump+0x492/0xcf0 [ 36.497460] ? netlink_broadcast+0x50/0x50 [ 36.501677] __netlink_dump_start+0x4ec/0x710 [ 36.506147] tipc_sock_diag_handler_dump+0x206/0x2c0 [ 36.511220] ? __tipc_diag_gen_cookie+0xb0/0xb0 [ 36.515857] ? tipc_unregister_sysctl+0x20/0x20 [ 36.520499] ? netlink_deliver_tap+0x2e9/0xf90 [ 36.525054] sock_diag_rcv_msg+0x204/0x360 [ 36.529262] netlink_rcv_skb+0x14b/0x380 [ 36.533293] ? sock_diag_bind+0x70/0x70 [ 36.537238] ? netlink_ack+0xa10/0xa10 [ 36.541182] ? netlink_skb_destructor+0x1d0/0x1d0 [ 36.545996] sock_diag_rcv+0x2a/0x40 [ 36.549695] netlink_unicast+0x4c4/0x6b0 [ 36.553727] ? netlink_attachskb+0x8a0/0x8a0 [ 36.558115] ? security_netlink_send+0x81/0xb0 [ 36.562669] netlink_sendmsg+0xa4a/0xe60 [ 36.566705] ? netlink_unicast+0x6b0/0x6b0 [ 36.570912] ? security_socket_sendmsg+0x89/0xb0 [ 36.575652] ? netlink_unicast+0x6b0/0x6b0 [ 36.579943] sock_sendmsg+0xca/0x110 [ 36.583643] ___sys_sendmsg+0x767/0x8b0 [ 36.587608] ? SyS_membarrier+0x700/0x700 [ 36.591814] ? copy_msghdr_from_user+0x590/0x590 [ 36.596552] ? __pmd_alloc+0x4e0/0x4e0 [ 36.600409] ? trace_hardirqs_off+0x10/0x10 [ 36.604707] ? find_held_lock+0x35/0x1d0 [ 36.608737] ? __fget_light+0x2b2/0x3c0 [ 36.612961] ? fget_raw+0x20/0x20 [ 36.616393] ? __do_page_fault+0x5f7/0xc90 [ 36.620606] ? lock_downgrade+0x980/0x980 [ 36.624728] __sys_sendmsg+0xe5/0x210 [ 36.628499] ? __sys_sendmsg+0xe5/0x210 [ 36.632452] ? SyS_shutdown+0x290/0x290 [ 36.636418] ? __do_page_fault+0x3d6/0xc90 [ 36.640628] ? move_addr_to_kernel+0x60/0x60 [ 36.645009] SyS_sendmsg+0x2d/0x50 [ 36.648523] ? __sys_sendmsg+0x210/0x210 [ 36.652812] do_syscall_64+0x281/0x940 [ 36.656666] ? __do_page_fault+0xc90/0xc90 [ 36.660875] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.665612] ? syscall_return_slowpath+0x550/0x550 [ 36.670511] ? syscall_return_slowpath+0x2ac/0x550 [ 36.675416] ? prepare_exit_to_usermode+0x350/0x350 [ 36.680400] ? retint_user+0x18/0x18 [ 36.684094] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.688922] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 36.694096] RIP: 0033:0x43fde9 [ 36.697262] RSP: 002b:00007ffc6f197198 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 36.704941] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fde9 [ 36.712183] RDX: 0000000000000000 RSI: 0000000020005000 RDI: 0000000000000003 [ 36.719422] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 36.726669] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401710 [ 36.733917] R13: 00000000004017a0 R14: 0000000000000000 R15: 0000000000000000 [ 36.741179] Code: f9 48 c1 e9 03 80 3c 11 00 0f 85 b5 07 00 00 4d 8b 7f 18 48 ba 00 00 00 00 00 fc ff df 49 8d bf 58 01 00 00 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 2b 07 00 00 4d 8b bf 58 01 00 00 48 ba 00 00 [ 36.760266] RIP: tipc_sk_fill_sock_diag+0x42d/0xc00 RSP: ffff8801b017eff0 [ 36.767208] ---[ end trace ae417c2a60a8b333 ]--- [ 36.771944] Kernel panic - not syncing: Fatal exception in interrupt [ 36.778826] Dumping ftrace buffer: [ 36.782385] (ftrace buffer empty) [ 36.786066] Kernel Offset: disabled [ 36.789667] Rebooting in 86400 seconds..