------------[ cut here ]------------
Trying to vfree() nonexistent vm area (00000000d58bcfec)
WARNING: CPU: 0 PID: 7108 at mm/vmalloc.c:2251 __vunmap+0x14f/0xac0 mm/vmalloc.c:2251
Modules linked in:
CPU: 0 PID: 7108 Comm: syz-executor.5 Not tainted 5.9.0-rc8-next-20201009-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__vunmap+0x14f/0xac0 mm/vmalloc.c:2251
Code: 85 78 ff ff ff e8 01 86 c8 ff 48 c7 c7 40 88 f7 89 e8 05 4d 5d 06 e8 f0 85 c8 ff 4c 89 e6 48 c7 c7 e0 be 75 88 e8 44 ba 32 06 <0f> 0b 48 83 c4 30 5b 5d 41 5c 41 5d 41 5e 41 5f e9 cc 85 c8 ff e8
RSP: 0018:ffffc900027274a8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803241a140 RSI: ffffffff815c3b97 RDI: fffff520004e4e87
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880ae631927
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90002d6b000
R13: ffff8880110b93c0 R14: ffffc90002d90000 R15: ffffe8ffffcc2cd0
FS:  00007f1039de0700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561062fbf988 CR3: 00000000228ff000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vfree mm/vmalloc.c:2318 [inline]
 vfree+0x88/0x140 mm/vmalloc.c:2349
 ipcomp_free_scratches+0xba/0x140 net/xfrm/xfrm_ipcomp.c:212
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:321 [inline]
 ipcomp_init_state+0x768/0xa00 net/xfrm/xfrm_ipcomp.c:373
 ipcomp6_init_state+0xc2/0x700 net/ipv6/ipcomp6.c:154
 __xfrm_init_state+0x9a6/0x14b0 net/xfrm/xfrm_state.c:2601
 xfrm_init_state+0x1a/0x70 net/xfrm/xfrm_state.c:2628
 pfkey_msg2xfrm_state net/key/af_key.c:1291 [inline]
 pfkey_add+0x1a10/0x2b70 net/key/af_key.c:1508
 pfkey_process+0x66d/0x7a0 net/key/af_key.c:2841
 pfkey_sendmsg+0x42d/0x800 net/key/af_key.c:3680
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x331/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmmsg+0x195/0x480 net/socket.c:2497
 __do_sys_sendmmsg net/socket.c:2526 [inline]
 __se_sys_sendmmsg net/socket.c:2523 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2523
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cba9
Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1039ddfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00000000004fe340 RCX: 000000000045cba9
RDX: 0000000000000393 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000919 R14: 00000000004cbed9 R15: 00007f1039de06d4