[....] Starting enhanced syslogd: rsyslogd[ 16.742447] audit: type=1400 audit(1520330710.412:5): avc: denied { syslog } for pid=4087 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: [ 22.315668] audit: type=1400 audit(1520330715.985:6): avc: denied { map } for pid=4229 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 '10.128.0.6' (ECDSA) to the list of known hosts. [ 28.651124] audit: type=1400 audit(1520330722.320:7): avc: denied { map } for pid=4243 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/06 10:05:22 parsed 1 programs 2018/03/06 10:05:22 executed programs: 0 [ 28.882106] audit: type=1400 audit(1520330722.550:8): avc: denied { map } for pid=4243 comm="syz-execprog" path="/root/syzkaller-shm897199503" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 28.890632] IPVS: ftp: loaded support on port[0] = 21 [ 29.163749] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 29.510487] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 29.516622] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.553612] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 29.590894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.605393] audit: type=1400 audit(1520330723.275:9): avc: denied { name_bind } for pid=4408 comm="syz-executor0" src=20000 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 [ 29.627898] audit: type=1400 audit(1520330723.275:10): avc: denied { node_bind } for pid=4408 comm="syz-executor0" src=20000 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:node_t:s0 tclass=dccp_socket permissive=1 [ 29.650330] audit: type=1400 audit(1520330723.276:11): avc: denied { name_connect } for pid=4408 comm="syz-executor0" dest=20000 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 [ 29.793771] kasan: CONFIG_KASAN_INLINE enabled [ 29.798493] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.805898] general protection fault: 0000 [#1] SMP KASAN [ 29.811420] Dumping ftrace buffer: [ 29.814931] (ftrace buffer empty) [ 29.818612] Modules linked in: [ 29.821781] CPU: 0 PID: 4430 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #252 [ 29.829026] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.838364] RIP: 0010:dccp_write_xmit+0x69/0x1d0 [ 29.843087] RSP: 0018:ffff8801ad2c76b8 EFLAGS: 00010246 [ 29.848419] RAX: ffff8801ad390380 RBX: ffff8801ad76e0c0 RCX: ffffffff854d7bd1 [ 29.855659] RDX: 0000000000000000 RSI: 1ffff10035a72183 RDI: ffff8801ad76e0c0 [ 29.862901] RBP: ffff8801ad2c76e8 R08: 1ffff10035a58e99 R09: 0000000000000000 [ 29.870144] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801af1eb3c0 [ 29.877384] R13: dffffc0000000000 R14: ffffed0035aedd13 R15: 0000000000000000 [ 29.884627] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7fe6b40 [ 29.892823] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.898687] CR2: 0000000008452798 CR3: 00000001b496a002 CR4: 00000000001606f0 [ 29.905932] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.913172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.920411] Call Trace: [ 29.922975] dccp_sendmsg+0x95f/0xdc0 [ 29.926751] ? find_held_lock+0x35/0x1d0 [ 29.930790] ? compat_dccp_getsockopt+0x70/0x70 [ 29.935429] ? get_futex_key+0x1d50/0x1d50 [ 29.939655] ? sock_has_perm+0x2a4/0x420 [ 29.943688] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 29.949029] ? iov_iter_get_pages+0x1150/0x1150 [ 29.953688] inet_sendmsg+0x11f/0x5e0 [ 29.957460] ? inet_create+0xf50/0xf50 [ 29.961319] ? selinux_socket_sendmsg+0x36/0x40 [ 29.965960] ? security_socket_sendmsg+0x89/0xb0 [ 29.970688] ? inet_create+0xf50/0xf50 [ 29.974558] sock_sendmsg+0xca/0x110 [ 29.978243] ___sys_sendmsg+0x767/0x8b0 [ 29.982192] ? copy_msghdr_from_user+0x590/0x590 [ 29.986925] ? lock_downgrade+0x980/0x980 [ 29.991051] ? __fget_light+0x2b2/0x3c0 [ 29.994995] ? fget_raw+0x20/0x20 [ 29.998420] ? __fd_install+0x288/0x740 [ 30.002364] ? get_unused_fd_flags+0x190/0x190 [ 30.006922] __sys_sendmsg+0xe5/0x210 [ 30.010695] ? __sys_sendmsg+0xe5/0x210 [ 30.014639] ? SyS_shutdown+0x290/0x290 [ 30.018588] ? compat_SyS_futex+0x288/0x380 [ 30.022878] ? fd_install+0x4d/0x60 [ 30.026480] ? move_addr_to_kernel+0x60/0x60 [ 30.030866] compat_SyS_sendmsg+0x2a/0x40 [ 30.034984] ? compat_SyS_getsockopt+0x420/0x420 [ 30.039716] do_fast_syscall_32+0x3ec/0xf9f [ 30.044020] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.048488] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.053040] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.057505] ? finish_task_switch+0x1c1/0x7e0 [ 30.061974] ? syscall_return_slowpath+0x2ac/0x550 [ 30.066880] ? prepare_exit_to_usermode+0x350/0x350 [ 30.071867] ? sysret32_from_system_call+0x5/0x3c [ 30.076683] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.081499] entry_SYSENTER_compat+0x70/0x7f [ 30.085887] RIP: 0023:0xf7feac99 [ 30.089232] RSP: 002b:00000000f7fe609c EFLAGS: 00000286 ORIG_RAX: 0000000000000172 [ 30.096908] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000020000140 [ 30.104161] RDX: 0000000020000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.111404] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.118643] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.125887] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.133143] Code: 00 00 48 85 c0 49 89 c4 0f 84 fb 00 00 00 e8 5f 8a 23 fc 41 80 3e 00 0f 85 5a 01 00 00 4c 8b bb d8 07 00 00 4c 89 fa 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 34 01 00 00 4d 8b 3f 49 8d bf b0 00 00 00 [ 30.152214] RIP: dccp_write_xmit+0x69/0x1d0 RSP: ffff8801ad2c76b8 [ 30.158551] ---[ end trace 10532854a4ca33d1 ]--- [ 30.163312] Kernel panic - not syncing: Fatal exception [ 30.169155] Dumping ftrace buffer: [ 30.172679] (ftrace buffer empty) [ 30.176360] Kernel Offset: disabled [ 30.179960] Rebooting in 86400 seconds..