[ 32.179010] audit: type=1800 audit(1563596005.859:33): pid=6883 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 32.206309] audit: type=1800 audit(1563596005.859:34): pid=6883 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.461789] random: sshd: uninitialized urandom read (32 bytes read) [ 33.809489] audit: type=1400 audit(1563596007.489:35): avc: denied { map } for pid=7054 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 [ 33.862517] random: sshd: uninitialized urandom read (32 bytes read) [ 34.426854] random: sshd: uninitialized urandom read (32 bytes read) [ 34.617533] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.230' (ECDSA) to the list of known hosts. [ 40.187677] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.305422] audit: type=1400 audit(1563596013.989:36): avc: denied { map } for pid=7067 comm="syz-executor718" path="/root/syz-executor718647373" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 40.308328] netlink: 4 bytes leftover after parsing attributes in process `syz-executor718'. [ 40.343869] kasan: CONFIG_KASAN_INLINE enabled [ 40.348891] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.357165] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.363534] Modules linked in: [ 40.366914] CPU: 1 PID: 7067 Comm: syz-executor718 Not tainted 4.14.133 #28 [ 40.374645] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.384682] task: ffff888077c9c0c0 task.stack: ffff88807b7b0000 [ 40.390830] RIP: 0010:tcf_ife_init+0x1b3/0x1310 [ 40.395489] RSP: 0018:ffff88807b7b7230 EFLAGS: 00010246 [ 40.401067] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1100ef93926 [ 40.408488] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282 [ 40.415763] RBP: ffff88807b7b7378 R08: ffff888077c9c0c0 R09: 0000000000000001 [ 40.423196] R10: 0000000000000000 R11: ffff888077c9c0c0 R12: 000000000000001f [ 40.430525] R13: ffff888215d4e940 R14: ffff88807b7b7350 R15: 0000000000000000 [ 40.438067] FS: 000000000216d880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 40.446377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.452590] CR2: 0000555ae52ea500 CR3: 0000000091f53000 CR4: 00000000001406e0 [ 40.461079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.469389] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.476937] Call Trace: [ 40.479589] ? tc_lookup_action_n+0xb2/0xd0 [ 40.484342] ? ife_get_meta_u32+0x150/0x150 [ 40.488737] ? lock_downgrade+0x6e0/0x6e0 [ 40.492886] ? _raw_read_unlock+0x2d/0x50 [ 40.497033] tcf_action_init_1+0x53c/0xaa0 [ 40.501523] ? tcf_action_dump_old+0x80/0x80 [ 40.506352] ? lock_downgrade+0x6e0/0x6e0 [ 40.510585] ? nla_parse+0x186/0x240 [ 40.514430] tcf_action_init+0x2ab/0x480 [ 40.518575] ? tcf_action_init_1+0xaa0/0xaa0 [ 40.522984] ? memset+0x32/0x40 [ 40.526323] ? nla_parse+0x186/0x240 [ 40.530139] tc_ctl_action+0x32f/0x556 [ 40.534094] ? tca_action_gd+0x840/0x840 [ 40.538159] ? tca_action_gd+0x840/0x840 [ 40.542392] rtnetlink_rcv_msg+0x3eb/0xb70 [ 40.546995] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.551729] ? trace_hardirqs_on+0x10/0x10 [ 40.556210] ? save_trace+0x290/0x290 [ 40.560013] netlink_rcv_skb+0x14f/0x3c0 [ 40.564190] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.568853] ? netlink_ack+0x9a0/0x9a0 [ 40.573295] ? lock_downgrade+0x6e0/0x6e0 [ 40.577624] rtnetlink_rcv+0x1d/0x30 [ 40.581534] netlink_unicast+0x45d/0x780 [ 40.586146] ? netlink_attachskb+0x6a0/0x6a0 [ 40.590582] ? security_netlink_send+0x81/0xb0 [ 40.595300] netlink_sendmsg+0x7c4/0xc60 [ 40.599364] ? netlink_unicast+0x780/0x780 [ 40.603602] ? security_socket_sendmsg+0x89/0xb0 [ 40.608379] ? netlink_unicast+0x780/0x780 [ 40.612605] sock_sendmsg+0xce/0x110 [ 40.616392] ___sys_sendmsg+0x70a/0x840 [ 40.620579] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 40.625380] ? _raw_spin_unlock+0x2d/0x50 [ 40.629519] ? do_huge_pmd_anonymous_page+0x2fc/0x1470 [ 40.634982] ? __thp_get_unmapped_area+0x130/0x130 [ 40.639946] ? __handle_mm_fault+0x6a1/0x3470 [ 40.644439] ? save_trace+0x290/0x290 [ 40.648312] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 40.653116] ? __do_page_fault+0x4e9/0xb80 [ 40.657431] ? __fget_light+0x172/0x1f0 [ 40.661395] ? __fdget+0x1b/0x20 [ 40.664752] ? sockfd_lookup_light+0xb4/0x160 [ 40.669248] __sys_sendmsg+0xb9/0x140 [ 40.673155] ? SyS_shutdown+0x170/0x170 [ 40.677257] SyS_sendmsg+0x2d/0x50 [ 40.681000] ? __sys_sendmsg+0x140/0x140 [ 40.685055] do_syscall_64+0x1e8/0x640 [ 40.688934] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.694020] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.699539] RIP: 0033:0x4401d9 [ 40.702729] RSP: 002b:00007ffccbc351a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.710659] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 40.718009] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 40.725274] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.732661] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 40.740221] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 40.747613] Code: 76 fc 48 c7 c2 bb 01 e6 84 be 01 00 00 00 48 c7 c7 60 f5 78 87 e8 de 00 62 fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 40.766965] RIP: tcf_ife_init+0x1b3/0x1310 RSP: ffff88807b7b7230 [ 40.773210] ---[ end trace 13a5da1a22b58f87 ]--- [ 40.777974] Kernel panic - not syncing: Fatal exception [ 40.784928] Kernel Offset: disabled [ 40.788561] Rebooting in 86400 seconds..