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Trying to vfree() nonexistent vm area (ffffc90002b81000)
WARNING: CPU: 0 PID: 14646 at mm/vmalloc.c:2547 __vunmap+0x13f/0xa60 mm/vmalloc.c:2546
Modules linked in:
CPU: 0 PID: 14646 Comm: syz-executor.2 Not tainted 5.13.0-rc7-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 c5 69 c3 ff eb 05 e8 be 69 c3 ff 48 c7 c7 60 1e fd 8c e8 32 da 07 08 48 c7 c7 a0 6a 3b 8a 4c 89 f6 31 c0 e8 e1 b0 8f ff <0f> 0b 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 60 1e
RSP: 0018:ffffc90002aff328 EFLAGS: 00010246
RAX: b33e4a78c42def00 RBX: ffffc90002ba0000 RCX: 0000000000040000
RDX: ffffc9000d963000 RSI: 0000000000007436 RDI: 0000000000007437
RBP: 0000000000000000 R08: ffffffff816564b2 R09: ffffed1017345f90
R10: ffffed1017345f90 R11: 0000000000000000 R12: 1ffffffff1c706a5
R13: dffffc0000000000 R14: ffffc90002b81000 R15: ffff888020c98c60
FS:  00007fa5dcf23700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055756faf7f78 CR3: 0000000021d0e000 CR4: 00000000001506f0
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_init_state+0x19/0x70 net/xfrm/xfrm_state.c:2633
 pfkey_msg2xfrm_state net/key/af_key.c:1291 [inline]
 pfkey_add+0x1cb5/0x2e60 net/key/af_key.c:1508
 pfkey_process net/key/af_key.c:2841 [inline]
 pfkey_sendmsg+0xade/0xf10 net/key/af_key.c:3680
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2337
 ___sys_sendmsg net/socket.c:2391 [inline]
 __sys_sendmmsg+0x500/0x790 net/socket.c:2477
 __do_sys_sendmmsg net/socket.c:2506 [inline]
 __se_sys_sendmmsg net/socket.c:2503 [inline]
 __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2503
 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:00007fa5dcf23188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 032bc45944b084a6 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd565b211f R14: 00007fa5dcf23300 R15: 0000000000022000