kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4135 Comm: syz-executor.4 Not tainted 5.2.0-rc2+ #13
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:xfrm6_get_saddr+0x96/0x130 net/ipv6/xfrm6_policy.c:65
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7e 4d 8b b4 24 b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 75 78 48 b8 00 00 00 00 00 fc ff df 49 8b 36 48 8d be
RSP: 0018:ffff888216b9ee20 EFLAGS: 00010a03
RAX: dffffc0000000000 RBX: ffff888216b9ef38 RCX: ffffc9000c22b000
RDX: 1ff11011d481381f RSI: ffffffff862d6cbe RDI: ffff88808ea409c7
RBP: ffff888216b9ee50 R08: ffff8880681c4680 R09: 0000000000000002
R10: ffff888216b9ee20 R11: ffff8880ae835f3b R12: ffff88808ea40917
R13: ffff88805f22c268 R14: ff88808ea409c0ff R15: 0000000000000001
FS:  00007f5cf4019700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b45cff000 CR3: 00000002192a1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 xfrm_get_saddr net/xfrm/xfrm_policy.c:2352 [inline]
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2381 [inline]
 xfrm_tmpl_resolve+0x63c/0xc90 net/xfrm/xfrm_policy.c:2435
 xfrm_resolve_and_create_bundle+0x137/0x2740 net/xfrm/xfrm_policy.c:2726
 xfrm_lookup_with_ifid+0x278/0x2070 net/xfrm/xfrm_policy.c:3049
 xfrm_lookup net/xfrm/xfrm_policy.c:3173 [inline]
 xfrm_lookup_route+0x3b/0x1f0 net/xfrm/xfrm_policy.c:3184
 ip_route_output_flow+0xad/0xc0 net/ipv4/route.c:2661
 udp_sendmsg+0x1ae9/0x2820 net/ipv4/udp.c:1154
 udpv6_sendmsg+0x13a4/0x28d0 net/ipv6/udp.c:1290
 inet_sendmsg+0x141/0x5d0 net/ipv4/af_inet.c:802
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:671
 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2292
 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2387
 __do_sys_sendmmsg net/socket.c:2416 [inline]
 __se_sys_sendmmsg net/socket.c:2413 [inline]
 __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2413
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459279
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5cf4018c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459279
RDX: 0000000000000001 RSI: 0000000020000a80 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5cf40196d4
R13: 00000000004c65fc R14: 00000000004db280 R15: 00000000ffffffff
Modules linked in:
---[ end trace 4a20061cdd8fa115 ]---
RIP: 0010:xfrm6_get_saddr+0x96/0x130 net/ipv6/xfrm6_policy.c:65
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7e 4d 8b b4 24 b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 75 78 48 b8 00 00 00 00 00 fc ff df 49 8b 36 48 8d be
RSP: 0018:ffff888216b9ee20 EFLAGS: 00010a03
RAX: dffffc0000000000 RBX: ffff888216b9ef38 RCX: ffffc9000c22b000
RDX: 1ff11011d481381f RSI: ffffffff862d6cbe RDI: ffff88808ea409c7
RBP: ffff888216b9ee50 R08: ffff8880681c4680 R09: 0000000000000002
R10: ffff888216b9ee20 R11: ffff8880ae835f3b R12: ffff88808ea40917
R13: ffff88805f22c268 R14: ff88808ea409c0ff R15: 0000000000000001
FS:  00007f5cf4019700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcb1a68330 CR3: 00000002192a1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400