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 Modules linked in: CPU: 1 PID: 3626 Comm: syz-executor3 Not tainted 4.4.157+ #101 task: ffff8801d6d94740 task.stack: ffff8800b8ec0000 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+0x18f/0x1530 net/ipv4/udp.c:1520 RSP: 0018:ffff8800b8ec7970 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8800b8c30000 RCX: 0000000000000000 RDX: 000000000000000c RSI: ffffffff823fe986 RDI: 0000000000000060 RBP: ffff8800b8ec79b0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8800b8e9e140 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8800b8e9e198 FS: 00007fbc2824e700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002082dff0 CR3: 00000001d08bb000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8800b8c30088 ffff880000000001 ffff8800b8c30088 ffff8800b8c30000 ffff8800b8e9e140 dffffc0000000000 ffff8800b8e9e198 0000000000000000 ffff8800b8ec7a20 ffffffff82168d3b ffff8800b8c30430 ffff8800b8c30188 Call Trace: [] sk_backlog_rcv include/net/sock.h:871 [inline] [] __release_sock net/core/sock.c:2023 [inline] [] release_sock+0x17b/0x500 net/core/sock.c:2473 [] udp_sendmsg+0x1152/0x1c70 net/ipv4/udp.c:1107 [] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbb/0x110 net/socket.c:648 [] SYSC_sendto net/socket.c:1678 [inline] [] SyS_sendto+0x220/0x370 net/socket.c:1646 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Code: 74 24 58 41 f6 c6 01 0f 85 39 08 00 00 e8 fa 63 ef 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 d1 0e 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+0x18f/0x1530 net/ipv4/udp.c:1520 RSP ---[ end trace d85e76c249c364b2 ]---