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: 2094 Comm: syz-executor117 Not tainted 4.4.162+ #9 task: ffff8800b7000000 task.stack: ffff8801d4298000 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:ffff8801d429f8f8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8800b6558000 RCX: 0000000000000000 RDX: 000000000000000c RSI: ffffffff8247a7b6 RDI: 0000000000000060 RBP: ffff8801d429f938 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8800b7b74780 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8800b7b747d8 FS: 0000000000000000(0000) GS:ffff8801db700000(0063) knlGS:0000000008625840 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020184000 CR3: 00000000b8249000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8800b6558088 ffff880000000001 ffff8800b6558088 ffff8800b6558000 ffff8800b7b74780 dffffc0000000000 ffff8800b7b747d8 0000000000000000 ffff8801d429f9a8 ffffffff821dd0fb ffff8800b6558430 ffff8800b6558188 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 [] do_syscall_32_irqs_on arch/x86/entry/common.c:396 [inline] [] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:463 [] sysenter_flags_fixed+0xd/0x1a Code: 74 24 58 41 f6 c6 01 0f 85 39 08 00 00 e8 2a c5 e8 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 6980aca41371460a ]---