random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 79 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 82 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 88 bits of entropy available) ------------[ cut here ]------------ kernel BUG at include/linux/skbuff.h:1824! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3755 Comm: syzkaller217255 Not tainted 4.4.116-g17c7c49 #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800ac0a3000 task.stack: ffff8801d8ce0000 RIP: 0010:[] [] __skb_pull include/linux/skbuff.h:1824 [inline] RIP: 0010:[] [] __ip6_make_skb+0x120b/0x1c30 net/ipv6/ip6_output.c:1676 RSP: 0018:ffff8801d8ce7440 EFLAGS: 00010293 RAX: ffff8800ac0a3000 RBX: 0000000000000738 RCX: ffffffff8330e5eb RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8800bb0104d0 RBP: ffff8801d8ce7640 R08: ffff8801c68a1e38 R09: 0000000000000000 R10: 0000000000001100 R11: 1ffff1003b19ce50 R12: 00000000000000d6 R13: ffff8801c68a1dc0 R14: ffff8801c68a1e3c R15: ffff8800bb010000 FS: 0000000001b44880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000b000 CR3: 00000001cd352000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d8ce74b0 ffff8801c68a1e7c ffff8801c68a1e90 ffff8801c68a1e88 ffff8801d966f4c8 1ffff1003b19ce9a ffff8800b4a6c380 ffff8801d01a73c0 ffff8800bb010012 ffff8800bb010520 ffffffff846effc0 ffff8801c68a1e48 Call Trace: [] ip6_finish_skb include/net/ipv6.h:872 [inline] [] udp_v6_push_pending_frames+0x20a/0x340 net/ipv6/udp.c:1094 [] udpv6_sendmsg+0x1f12/0x2500 net/ipv6/udp.c:1358 [] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:635 [] ___sys_sendmsg+0x312/0x7c0 net/socket.c:1962 [] __sys_sendmmsg+0x11c/0x2e0 net/socket.c:2047 [] SYSC_sendmmsg net/socket.c:2077 [inline] [] SyS_sendmmsg+0x35/0x60 net/socket.c:2072 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Code: 08 84 c9 0f 85 c0 08 00 00 41 3b 45 7c 72 17 e8 8c 27 05 fe 45 89 e6 4d 01 f7 4d 89 bd d0 00 00 00 e9 17 f2 ff ff e8 75 27 05 fe <0f> 0b e8 6e 27 05 fe 48 8b 7c 24 50 e8 34 d2 fe ff 41 89 c4 e9 RIP [] __skb_pull include/linux/skbuff.h:1824 [inline] RIP [] __ip6_make_skb+0x120b/0x1c30 net/ipv6/ip6_output.c:1676 RSP ---[ end trace 93cb25f79fde2ede ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..