random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 110 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 3784 Comm: syzkaller121451 Not tainted 4.4.120-gd63fdf6 #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800b6320000 task.stack: ffff8801d93d8000 RIP: 0010:[] [] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline] RIP: 0010:[] [] xfrm_policy_check include/net/xfrm.h:1076 [inline] RIP: 0010:[] [] xfrm4_policy_check include/net/xfrm.h:1081 [inline] RIP: 0010:[] [] udp_queue_rcv_skb+0x191/0x1560 net/ipv4/udp.c:1517 RSP: 0018:ffff8801d93df928 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8801d9770000 RCX: ffffffff831aa228 RDX: 000000000000000c RSI: ffff8801cdd84c80 RDI: 0000000000000060 RBP: ffff8801d93df968 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 1ffff1003b27bef6 R12: ffff8801cdd84c80 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cdd84cd8 FS: 000000000156f880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002082dff0 CR3: 00000001c9f34000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d9770088 ffff880100000001 ffff8801d9770088 dffffc0000000000 ffff8801d9770000 0000000000000000 ffffed003b2ee086 ffff8801cdd84c80 ffff8801d93df9d8 ffffffff82df8cb6 ffff8801d9770188 ffff8801d9770190 Call Trace: [] sk_backlog_rcv include/net/sock.h:871 [inline] [] __release_sock net/core/sock.c:2023 [inline] [] release_sock+0x176/0x510 net/core/sock.c:2473 [] udp_sendmsg+0x15c4/0x1c30 net/ipv4/udp.c:1105 [] 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 [] SYSC_sendto+0x2c8/0x340 net/socket.c:1665 [] SyS_sendto+0x40/0x50 net/socket.c:1633 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Code: 74 24 58 41 f6 c6 01 0f 85 7f 07 00 00 e8 28 6b 1b 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 9f 0b 00 00 41 f6 46 60 04 RIP [] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline] RIP [] xfrm_policy_check include/net/xfrm.h:1076 [inline] RIP [] xfrm4_policy_check include/net/xfrm.h:1081 [inline] RIP [] udp_queue_rcv_skb+0x191/0x1560 net/ipv4/udp.c:1517 RSP ---[ end trace 35042e715da273cb ]--- Kernel panic - not syncing: Fatal exception in interrupt Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..