------------[ cut here ]------------
Trying to vfree() nonexistent vm area (0000000018a9aff7)
WARNING: CPU: 0 PID: 8590 at mm/vmalloc.c:2234 __vunmap+0x75b/0x920 mm/vmalloc.c:2234
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8590 Comm: syz-executor.4 Not tainted 5.3.0-rc8+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:__vunmap+0x75b/0x920 mm/vmalloc.c:2234
Code: e8 8a af 09 00 49 8d 46 20 45 8b 66 28 48 89 45 a8 e9 82 fe ff ff e8 24 a1 cf ff 4c 89 e6 48 c7 c7 80 c4 94 87 e8 ed 29 a1 ff <0f> 0b e9 70 ff ff ff e8 09 a1 cf ff 31 d2 31 f6 48 c7 c7 ff ff ff
RSP: 0018:ffff8880a638f2b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880a6796078 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c2696 RDI: ffffed1014c71e48
RBP: ffff8880a638f310 R08: ffff88808d942380 R09: ffffed1015d060d1
R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffffc9000661c000
R13: 0000000000000000 R14: ffffe8ffffc94fb0 R15: 0000607f51494fb0
 __vfree+0x41/0xd0 mm/vmalloc.c:2299
 vfree+0x5f/0x90 mm/vmalloc.c:2329
 ipcomp_free_scratches+0xc0/0x150 net/xfrm/xfrm_ipcomp.c:212
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:321 [inline]
 ipcomp_init_state+0x76d/0xa10 net/xfrm/xfrm_ipcomp.c:373
 ipcomp6_init_state+0xc9/0x880 net/ipv6/ipcomp6.c:153
 __xfrm_init_state+0x998/0x14d0 net/xfrm/xfrm_state.c:2493
 xfrm_state_construct net/xfrm/xfrm_user.c:626 [inline]
 xfrm_add_sa+0x1f6c/0x351e net/xfrm/xfrm_user.c:683
 xfrm_user_rcv_msg+0x459/0x770 net/xfrm/xfrm_user.c:2676
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 xfrm_netlink_rcv+0x70/0x90 net/xfrm/xfrm_user.c:2684
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:657
 ___sys_sendmsg+0x803/0x920 net/socket.c:2311
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356
 __do_sys_sendmsg net/socket.c:2365 [inline]
 __se_sys_sendmsg net/socket.c:2363 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4598e9
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f19e7c6fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9
RDX: 0000000000000000 RSI: 0000000020000840 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19e7c706d4
R13: 00000000004c7812 R14: 00000000004dd0b0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..