------------[ cut here ]------------
Trying to vfree() nonexistent vm area (ffffc90002b94000)
WARNING: CPU: 1 PID: 21803 at mm/vmalloc.c:2613 __vunmap+0x13f/0xa70 mm/vmalloc.c:2612
Modules linked in:
CPU: 1 PID: 21803 Comm: syz-executor.4 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__vunmap+0x13f/0xa70 mm/vmalloc.c:2612
Code: 2b e8 c5 bb c0 ff eb 05 e8 be bb c0 ff 48 c7 c7 c0 fb bd 8c e8 82 18 51 08 48 c7 c7 a0 4c 7c 8a 4c 89 f6 31 c0 e8 61 95 8a ff <0f> 0b 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 c0 fb
RSP: 0018:ffffc900030ef1e0 EFLAGS: 00010246
RAX: 299266dd81ef8b00 RBX: ffffc90002ba8000 RCX: 0000000000040000
RDX: ffffc9000bd23000 RSI: 00000000000098b8 RDI: 00000000000098b9
RBP: 0000000000000000 R08: ffffffff816a1d52 R09: ffffed10173667b1
R10: ffffed10173667b1 R11: 0000000000000000 R12: 1ffffffff1bfd1f5
R13: dffffc0000000000 R14: ffffc90002b94000 R15: ffff88807f1ed4e0
FS:  00007f7b5fe53700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7110569998 CR3: 000000002d630000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000b8fecd19 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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+0xb7/0x920 net/ipv4/ipcomp.c:135
 __xfrm_init_state+0x8b5/0xba0 net/xfrm/xfrm_state.c:2648
 xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
 xfrm_add_sa+0x243b/0x3c40 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x6f2/0xa90 net/xfrm/xfrm_user.c:2912
 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2496
 xfrm_netlink_rcv+0x70/0x80 net/xfrm/xfrm_user.c:2934
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0xaea/0xe60 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x5b9/0x910 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmsg+0x280/0x370 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7b60eddaf9
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:00007f7b5fe53188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7b60ff0f60 RCX: 00007f7b60eddaf9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007f7b60f37ff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff67b2650f R14: 00007f7b5fe53300 R15: 0000000000022000
 </TASK>