[....] Starting enhanced syslogd: rsyslogd[ 13.288188] audit: type=1400 audit(1541368265.342:4): avc: denied { syslog } for pid=1921 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 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 Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "bridge_slave_0" Cannot find device "bridge_slave_1" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" executing program syzkaller login: [ 45.589470] kasan: CONFIG_KASAN_INLINE enabled [ 45.594046] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 45.607042] Modules linked in: [ 45.610338] CPU: 0 PID: 2080 Comm: syz-executor361 Not tainted 4.4.162+ #117 [ 45.617501] task: ffff8801d5d12f80 task.stack: ffff8801d3c10000 [ 45.623531] RIP: 0010:[] [] udp_queue_rcv_skb+0x18f/0x1530 [ 45.632486] RSP: 0018:ffff8801d3c17970 EFLAGS: 00010206 [ 45.637911] RAX: dffffc0000000000 RBX: ffff8800b4440000 RCX: 0000000000000000 [ 45.645156] RDX: 000000000000000c RSI: ffffffff8246ea06 RDI: 0000000000000060 [ 45.652402] RBP: ffff8801d3c179b0 R08: 0000000000000001 R09: 0000000000000001 [ 45.659645] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801d1a21c80 [ 45.666888] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d1a21cd8 [ 45.674137] FS: 00000000013a3880(0063) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 45.682350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.688208] CR2: 0000000020001040 CR3: 00000001d4574000 CR4: 00000000001606b0 [ 45.695457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.702706] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.709949] Stack: [ 45.712078] ffff8800b4440088 ffff880100000001 ffff8800b4440088 ffff8800b4440000 [ 45.720075] ffff8801d1a21c80 dffffc0000000000 ffff8801d1a21cd8 0000000000000000 [ 45.728075] ffff8801d3c17a20 ffffffff821d134b ffff8800b4440430 ffff8800b4440188 [ 45.736113] Call Trace: [ 45.738685] [] release_sock+0x17b/0x500 [ 45.744287] [] udp_sendmsg+0x1152/0x1c70 [ 45.749977] [] ? avc_has_perm_noaudit+0x2f0/0x2f0 [ 45.756442] [] ? udp_lib_close+0x20/0x20 [ 45.762131] [] ? udp_lib_unhash+0x630/0x630 [ 45.768075] [] ? trace_hardirqs_on+0x10/0x10 [ 45.774137] [] ? sock_has_perm+0x1c1/0x3f0 [ 45.779994] [] ? sock_has_perm+0x2a1/0x3f0 [ 45.785853] [] ? sock_has_perm+0x9f/0x3f0 [ 45.791628] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 45.799139] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 45.805875] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 45.812605] [] ? check_preemption_disabled+0x3b/0x170 [ 45.819422] [] ? inet_sendmsg+0x143/0x4d0 [ 45.825192] [] inet_sendmsg+0x203/0x4d0 [ 45.830792] [] ? inet_sendmsg+0x73/0x4d0 [ 45.836477] [] ? inet_recvmsg+0x4c0/0x4c0 [ 45.842247] [] sock_sendmsg+0xbb/0x110 [ 45.847758] [] SyS_sendto+0x220/0x370 [ 45.853179] [] ? SyS_getpeername+0x2d0/0x2d0 [ 45.859231] [] ? mntput_no_expire+0xcc/0x820 [ 45.865264] [] ? __sock_release+0x260/0x260 [ 45.871208] [] ? mntput_no_expire+0xf8/0x820 [ 45.877237] [] ? dput.part.9+0x2a/0x760 [ 45.882833] [] ? __sock_release+0x260/0x260 [ 45.888778] [] ? task_work_run+0x152/0x190 [ 45.894637] [] ? int_ret_from_sys_call+0x52/0xa3 [ 45.901034] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 45.907847] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 45.914313] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 45.920874] Code: 74 24 58 41 f6 c6 01 0f 85 39 08 00 00 e8 da 82 e9 fe 49 83 e6 fe 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 60 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e d1 0e 00 00 41 f6 46 60 04 [ 45.947883] RIP [] udp_queue_rcv_skb+0x18f/0x1530 [ 45.954479] RSP [ 45.958125] ---[ end trace 73d5d03711549629 ]--- [ 45.962882] Kernel panic - not syncing: Fatal exception in interrupt [ 45.969985] Kernel Offset: disabled [ 45.973593] Rebooting in 86400 seconds..