[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.699865] random: sshd: uninitialized urandom read (32 bytes read) [ 32.947593] kauditd_printk_skb: 10 callbacks suppressed [ 32.947601] audit: type=1400 audit(1563654671.472:35): avc: denied { map } for pid=6907 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 [ 33.005295] random: sshd: uninitialized urandom read (32 bytes read) [ 33.514069] random: sshd: uninitialized urandom read (32 bytes read) [ 33.712215] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.191' (ECDSA) to the list of known hosts. [ 39.219798] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 39.342338] audit: type=1400 audit(1563654677.872:36): avc: denied { map } for pid=6920 comm="syz-executor132" path="/root/syz-executor132896962" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 39.345308] BUG: unable to handle kernel paging request at fffffffc40001810 [ 39.375700] IP: dummy_set_vf_spoofchk+0x7a/0xb0 [ 39.380546] PGD 766d067 P4D 766d067 PUD 0 [ 39.384775] Oops: 0002 [#1] PREEMPT SMP KASAN [ 39.389481] Modules linked in: [ 39.392655] CPU: 0 PID: 6920 Comm: syz-executor132 Not tainted 4.14.133 #28 [ 39.399743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.410781] task: ffff8880978f8200 task.stack: ffff888084040000 [ 39.417395] RIP: 0010:dummy_set_vf_spoofchk+0x7a/0xb0 [ 39.422608] RSP: 0018:ffff8880840472b0 EFLAGS: 00010246 [ 39.427954] RAX: 0000000000000000 RBX: fffffffc40001800 RCX: 0000000000000000 [ 39.435202] RDX: 0000000000000000 RSI: 00000000d8000100 RDI: fffffffc40001810 [ 39.442471] RBP: ffff8880840472c8 R08: 1ffff11010808e99 R09: ffff8880840474c8 [ 39.449805] R10: ffffed1010808ea5 R11: ffff88808404752f R12: ffff8880a19ee7c0 [ 39.457063] R13: 0000000000000000 R14: ffff888084047610 R15: ffff8880928ac368 [ 39.464684] FS: 0000000000726880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 [ 39.472909] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.478775] CR2: fffffffc40001810 CR3: 00000000969d1000 CR4: 00000000001406f0 [ 39.486029] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.493368] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.500635] Call Trace: [ 39.503211] do_setlink+0x1834/0x2d50 [ 39.507007] ? dummy_set_vf_rate+0x110/0x110 [ 39.511399] ? rtnl_register+0x50/0x50 [ 39.515269] ? __lock_acquire+0x5f9/0x45e0 [ 39.519481] ? trace_hardirqs_on+0x10/0x10 [ 39.523700] ? trace_hardirqs_on+0x10/0x10 [ 39.527930] ? save_trace+0x290/0x290 [ 39.531734] ? __lock_acquire+0x5f9/0x45e0 [ 39.535951] ? find_held_lock+0x35/0x130 [ 39.539992] ? avc_has_perm_noaudit+0x28b/0x420 [ 39.544672] ? nla_parse+0x186/0x240 [ 39.548363] rtnl_setlink+0x225/0x320 [ 39.552158] ? do_setlink+0x2d50/0x2d50 [ 39.556111] ? lock_acquire+0x16f/0x430 [ 39.560062] ? rtnetlink_rcv_msg+0x33a/0xb70 [ 39.564465] ? do_setlink+0x2d50/0x2d50 [ 39.568540] rtnetlink_rcv_msg+0x3eb/0xb70 [ 39.572778] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 39.577348] ? trace_hardirqs_on+0x10/0x10 [ 39.581577] ? save_trace+0x290/0x290 [ 39.585386] netlink_rcv_skb+0x14f/0x3c0 [ 39.589431] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 39.594254] ? netlink_ack+0x9a0/0x9a0 [ 39.598119] ? lock_downgrade+0x6e0/0x6e0 [ 39.602270] rtnetlink_rcv+0x1d/0x30 [ 39.606165] netlink_unicast+0x45d/0x780 [ 39.610212] ? netlink_attachskb+0x6a0/0x6a0 [ 39.614601] ? security_netlink_send+0x81/0xb0 [ 39.619164] netlink_sendmsg+0x7c4/0xc60 [ 39.623224] ? netlink_unicast+0x780/0x780 [ 39.627460] ? security_socket_sendmsg+0x89/0xb0 [ 39.632340] ? netlink_unicast+0x780/0x780 [ 39.636572] sock_sendmsg+0xce/0x110 [ 39.640277] ___sys_sendmsg+0x70a/0x840 [ 39.644227] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 39.649171] ? dev_load+0x1b0/0x1b0 [ 39.652783] ? do_huge_pmd_anonymous_page+0x2fc/0x1470 [ 39.658044] ? sock_do_ioctl+0x93/0xb0 [ 39.661910] ? sock_do_ioctl+0x72/0xb0 [ 39.665777] ? sock_ioctl+0x178/0x470 [ 39.669741] ? __fget_light+0x172/0x1f0 [ 39.673715] ? __fdget+0x1b/0x20 [ 39.677063] ? sockfd_lookup_light+0xb4/0x160 [ 39.681539] __sys_sendmsg+0xb9/0x140 [ 39.685329] ? SyS_shutdown+0x170/0x170 [ 39.689288] ? security_file_ioctl+0x89/0xb0 [ 39.693674] SyS_sendmsg+0x2d/0x50 [ 39.697242] ? __sys_sendmsg+0x140/0x140 [ 39.701300] do_syscall_64+0x1e8/0x640 [ 39.705687] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.710544] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 39.715711] RIP: 0033:0x440259 [ 39.718879] RSP: 002b:00007ffe8d9eb298 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 39.726585] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440259 [ 39.733857] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 39.741139] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 39.748511] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ae0 [ 39.756274] R13: 0000000000401b70 R14: 0000000000000000 R15: 0000000000000000 [ 39.763549] Code: 48 8d 1c d0 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 16 <44> 88 6b 10 45 31 e4 e8 3a ad b8 fd 44 89 e0 5b 41 5c 41 5d 5d [ 39.782641] RIP: dummy_set_vf_spoofchk+0x7a/0xb0 RSP: ffff8880840472b0 [ 39.789285] CR2: fffffffc40001810 [ 39.794157] ---[ end trace b75eaf0c40c178af ]--- [ 39.798907] Kernel panic - not syncing: Fatal exception [ 39.808587] Kernel Offset: disabled [ 39.812222] Rebooting in 86400 seconds..