random: sshd: uninitialized urandom read (32 bytes read) audit: type=1400 audit(1564512735.703:36): avc: denied { map } for pid=6914 comm="syz-executor489" path="/root/syz-executor489930808" 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 BUG: unable to handle kernel paging request at fffffffca6900000 IP: memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54 PGD 766d067 P4D 766d067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 6914 Comm: syz-executor489 Not tainted 4.14.134 #30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88807ced4080 task.stack: ffff8880a96a0000 RIP: 0010:memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54 RSP: 0018:ffff8880a96a7278 EFLAGS: 00010246 RAX: fffffffca6900000 RBX: ffffffffdc460000 RCX: 0000000000000006 RDX: 0000000000000006 RSI: ffff8880909c9a70 RDI: fffffffca6900000 RBP: ffff8880a96a7298 R08: 1fffffff94d20000 R09: fffffbff94d20001 R10: fffffbff94d20000 R11: fffffffca6900005 R12: 0000000000000006 R13: fffffffca6900000 R14: ffff8880909c9a70 R15: ffff8880909c9a68 FS: 000000000171d880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffca6900000 CR3: 000000007d011000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy include/linux/string.h:347 [inline] dummy_set_vf_mac+0xdf/0x120 drivers/net/dummy.c:179 do_setvfinfo net/core/rtnetlink.c:1772 [inline] do_setlink+0x1098/0x2d50 net/core/rtnetlink.c:2135 rtnl_setlink+0x225/0x320 net/core/rtnetlink.c:2303 rtnetlink_rcv_msg+0x3eb/0xb70 net/core/rtnetlink.c:4285 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4297 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline] netlink_unicast+0x45d/0x780 net/netlink/af_netlink.c:1312 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062 __sys_sendmsg+0xb9/0x140 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2103 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x440239 RSP: 002b:00007ffce5a7d748 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 RDX: 0000000000000000 RSI: 000000002000a000 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ac0 R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 Code: 90 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 RIP: memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54 RSP: ffff8880a96a7278 CR2: fffffffca6900000 ---[ end trace 034e1b80a99f64ad ]---