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Trying to vfree() nonexistent vm area (ffffc90004bd1000)
WARNING: CPU: 0 PID: 17796 at mm/vmalloc.c:2641 __vunmap+0x154/0xd30 mm/vmalloc.c:2641
Modules linked in:
CPU: 0 PID: 17796 Comm: syz-executor.2 Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__vunmap+0x154/0xd30 mm/vmalloc.c:2641
Code: 85 75 ff ff ff e8 3c bd bf ff 48 c7 c7 80 88 eb 8b e8 d0 b5 be 07 e8 2b bd bf ff 48 89 ee 48 c7 c7 e0 a1 d8 89 e8 ee 78 76 07 <0f> 0b 48 83 c4 40 5b 5d 41 5c 41 5d 41 5e 41 5f e9 07 bd bf ff e8
RSP: 0018:ffffc900044f72d0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888034528000 RSI: ffffffff8160ed68 RDI: fffff5200089ee4c
RBP: ffffc90004bd1000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 6628206165726120 R12: dffffc0000000000
R13: ffff88801e6402a0 R14: ffffc90004bd1000 R15: ffffe8ffffa010e8
FS:  00007f500451f700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f381836e218 CR3: 0000000080832000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __vfree+0x3c/0xd0 mm/vmalloc.c:2713
 vfree+0x5a/0x90 mm/vmalloc.c:2744
 ipcomp_free_scratches+0xc4/0x160 net/xfrm/xfrm_ipcomp.c:203
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:312 [inline]
 ipcomp_init_state+0x74a/0xa60 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:2667
 xfrm_state_construct net/xfrm/xfrm_user.c:636 [inline]
 xfrm_add_sa+0x1f57/0x3670 net/xfrm/xfrm_user.c:693
 xfrm_user_rcv_msg+0x437/0xa30 net/xfrm/xfrm_user.c:2924
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2946
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x6eb/0x810 net/socket.c:2492
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2546
 __sys_sendmsg net/socket.c:2575 [inline]
 __do_sys_sendmsg net/socket.c:2584 [inline]
 __se_sys_sendmsg net/socket.c:2582 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2582
 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+0x46/0xb0
RIP: 0033:0x7f5003489109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f500451f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f500359bf60 RCX: 00007f5003489109
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000005
RBP: 00007f50034e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf91f2cef R14: 00007f500451f300 R15: 0000000000022000
 </TASK>