------------[ cut here ]------------
Trying to vfree() nonexistent vm area (ffffc90005b39000)
WARNING: CPU: 1 PID: 10394 at mm/vmalloc.c:2601 __vunmap+0x150/0xb70 mm/vmalloc.c:2601
Modules linked in:
CPU: 1 PID: 10394 Comm: syz-executor.0 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__vunmap+0x150/0xb70 mm/vmalloc.c:2601
Code: 85 78 ff ff ff e8 a0 9e c3 ff 48 c7 c7 c0 cc a9 8b e8 14 87 85 07 e8 8f 9e c3 ff 4c 89 e6 48 c7 c7 e0 06 97 89 e8 7c 32 40 07 <0f> 0b 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e 41 5f e9 6b 9e c3 ff e8
RSP: 0018:ffffc90005a572d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815dae48 RDI: fffff52000b4ae4d
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815d4bee R11: 0000000000000000 R12: ffffc90005b39000
R13: ffff888079560ea0 R14: ffffc90005b39000 R15: ffffe8ffffc7fc58
FS:  00007fae7e753700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd0b63fff8 CR3: 0000000046684000 CR4: 0000000000350ef0
Call Trace:
 __vfree+0x3c/0xd0 mm/vmalloc.c:2669
 vfree+0x5a/0x90 mm/vmalloc.c:2700
 ipcomp_free_scratches+0xc4/0x160 net/xfrm/xfrm_ipcomp.c:203
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:312 [inline]
 ipcomp_init_state+0x77c/0xa40 net/xfrm/xfrm_ipcomp.c:364
 ipcomp4_init_state+0xc2/0x8e0 net/ipv4/ipcomp.c:135
 __xfrm_init_state+0x995/0x15c0 net/xfrm/xfrm_state.c:2648
 xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
 xfrm_add_sa+0x1ef1/0x35f0 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x430/0xa20 net/xfrm/xfrm_user.c:2869
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2891
 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fae811dc8d9
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:00007fae7e753188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fae812e0f60 RCX: 00007fae811dc8d9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007fae81236cb4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1f9eeb4f R14: 00007fae7e753300 R15: 0000000000022000