------------[ cut here ]------------
Trying to vfree() nonexistent vm area (00000000aa67fd40)
WARNING: CPU: 1 PID: 8892 at mm/vmalloc.c:2251 __vunmap+0x14f/0xac0 mm/vmalloc.c:2251
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8892 Comm: syz-executor.4 Not tainted 5.8.0-syzkaller #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+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:__vunmap+0x14f/0xac0 mm/vmalloc.c:2251
Code: 85 78 ff ff ff e8 81 d4 c9 ff 48 c7 c7 e0 38 c8 89 e8 a5 4e 49 06 e8 70 d4 c9 ff 4c 89 e6 48 c7 c7 40 4b 55 88 e8 c3 df 9a ff <0f> 0b 48 83 c4 30 5b 5d 41 5c 41 5d 41 5e 41 5f e9 4c d4 c9 ff e8
RSP: 0018:ffffc90006707318 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880a93a0040 RSI: ffffffff815db8f7 RDI: fffff52000ce0e55
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880ae731927
R10: 0000000000000000 R11: 0000000039383854 R12: ffffc90009837000
R13: ffff88809ef76cc0 R14: ffffc900096f1000 R15: ffffe8ffffcbf880
 __vfree mm/vmalloc.c:2318 [inline]
 vfree+0x88/0x140 mm/vmalloc.c:2348
 ipcomp_free_scratches+0xba/0x140 net/xfrm/xfrm_ipcomp.c:212
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:321 [inline]
 ipcomp_init_state+0x768/0xa00 net/xfrm/xfrm_ipcomp.c:373
 ipcomp4_init_state+0xc2/0x8e0 net/ipv4/ipcomp.c:134
 __xfrm_init_state+0x9a6/0x14b0 net/xfrm/xfrm_state.c:2498
 xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
 xfrm_add_sa+0x1db9/0x34f0 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x414/0x700 net/xfrm/xfrm_user.c:2684
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2692
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2359
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2413
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2446
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45ce69
Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1f5e4aec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002c140 RCX: 000000000045ce69
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffdc7b731ef R14: 00007f1f5e4af9c0 R15: 000000000118bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..