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: 9005 Comm: syz-executor.4 Not tainted 4.4.174+ #4 task: ffff8801d5f08000 task.stack: ffff8800b5ec0000 RIP: 0010:[] [] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline] RIP: 0010:[] [] xfrm_policy_check include/net/xfrm.h:1076 [inline] RIP: 0010:[] [] xfrm6_policy_check include/net/xfrm.h:1086 [inline] RIP: 0010:[] [] udpv6_queue_rcv_skb+0x18d/0x14d0 net/ipv6/udp.c:634 RSP: 0018:ffff8800b5ec78f8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90003386000 RDX: 000000000000000c RSI: ffffffff82615684 RDI: 0000000000000060 RBP: ffff8800b5ec7940 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d2baabc0 R13: ffff8800b71c5a00 R14: 0000000000000000 R15: ffff8800b71c5a58 FS: 00007f2935d10700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000714934 CR3: 00000001d2360000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d5f08000 ffff880100000001 ffff8801d2baac48 ffff8801d2baac48 ffff8801d2baabc0 ffff8800b71c5a00 dffffc0000000000 ffff8801d2baac48 ffff8800b71c5c80 ffff8800b5ec79b0 ffffffff821e5e40 ffff8801d2baaff0 Call Trace: [] sk_backlog_rcv include/net/sock.h:875 [inline] [] __release_sock net/core/sock.c:2024 [inline] [] release_sock+0x170/0x500 net/core/sock.c:2477 [] do_ipv6_setsockopt.isra.0+0x42f/0x30c0 net/ipv6/ipv6_sockglue.c:880 [] ipv6_setsockopt+0xda/0x140 net/ipv6/ipv6_sockglue.c:904 [] udpv6_setsockopt+0x4e/0x90 net/ipv6/udp.c:1436 [] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2663 [] SYSC_setsockopt net/socket.c:1780 [inline] [] SyS_setsockopt+0x159/0x240 net/socket.c:1759 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Code: 8b 75 58 41 f6 c6 01 0f 85 d9 07 00 00 e8 6c 3f cf 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 8b 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 [] xfrm6_policy_check include/net/xfrm.h:1086 [inline] RIP [] udpv6_queue_rcv_skb+0x18d/0x14d0 net/ipv6/udp.c:634 RSP ---[ end trace fe31caccee156e3d ]---