------------[ cut here ]------------
Trying to vfree() nonexistent vm area (ffffc90002e31000)
WARNING: CPU: 0 PID: 14787 at mm/vmalloc.c:2547 __vunmap+0x13f/0xa60 mm/vmalloc.c:2546
Modules linked in:
CPU: 0 PID: 14787 Comm: syz-executor.0 Not tainted 5.13.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__vunmap+0x13f/0xa60 mm/vmalloc.c:2546
Code: 2b e8 e5 7f c3 ff eb 05 e8 de 7f c3 ff 48 c7 c7 20 1d fd 8c e8 12 9f 07 08 48 c7 c7 40 69 3b 8a 4c 89 f6 31 c0 e8 e1 c5 8f ff <0f> 0b 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 20 1d
RSP: 0018:ffffc90002dff180 EFLAGS: 00010246
RAX: fd681f0466a4e300 RBX: ffffc90002e31000 RCX: ffff88802d1e1c40
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81655632 R09: ffffed1017345f90
R10: ffffed1017345f90 R11: 0000000000000000 R12: 1ffffffff1c70595
R13: dffffc0000000000 R14: ffffc90002e31000 R15: ffff88801d3cf6c0
FS:  00007f97dffff700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe907a22000 CR3: 000000002951a000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ipcomp_free_scratches net/xfrm/xfrm_ipcomp.c:203 [inline]
 ipcomp_free_data+0x13f/0x1f0 net/xfrm/xfrm_ipcomp.c:312
 ipcomp_init_state+0x825/0x910 net/xfrm/xfrm_ipcomp.c:364
 ipcomp4_init_state+0xb4/0xa60 net/ipv4/ipcomp.c:134
 __xfrm_init_state+0x71c/0xb60 net/xfrm/xfrm_state.c:2606
 xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
 xfrm_add_sa+0x2440/0x3c20 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x6ec/0x950 net/xfrm/xfrm_user.c:2812
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2504
 xfrm_netlink_rcv+0x70/0x80 net/xfrm/xfrm_user.c:2824
 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
 netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0xaa6/0xe90 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x319/0x400 net/socket.c:2433
 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f97dffff188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe4b71b7bf R14: 00007f97dffff300 R15: 0000000000022000