------------[ cut here ]------------
Trying to vfree() bad address (0000000000fd73f2)
IPv6: ADDRCONF(NETDEV_UP): veth877: link is not ready
WARNING: CPU: 1 PID: 3040 at mm/vmalloc.c:1509 __vunmap+0x31a/0x3f0 mm/vmalloc.c:1509
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3040 Comm: syz-executor.3 Not tainted 4.19.155-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+0x1fc/0x2fe lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x61 kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__vunmap+0x31a/0x3f0 mm/vmalloc.c:1509
Code: e9 5d fe ff ff e8 c6 5b d1 ff 49 81 ef 00 10 00 00 e9 be fd ff ff e8 b5 5b d1 ff 4c 89 e6 48 c7 c7 c0 d7 72 88 e8 f1 39 a5 ff <0f> 0b eb 94 e8 9d 5b d1 ff 4c 89 e6 48 c7 c7 20 d8 72 88 e8 d9 39
RSP: 0018:ffff88822e1c7670 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000012893 RSI: ffffffff814fda81 RDI: ffffed1045c38ec0
RBP: 0000000000000005 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffffc90000000005
R13: fffffbfff164d826 R14: 0000607f45c735d8 R15: ffffe8ffffd735d8
 vfree+0x65/0x100 mm/vmalloc.c:1598
 ipcomp_free_scratches+0xba/0x140 net/xfrm/xfrm_ipcomp.c:216
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:325 [inline]
 ipcomp_init_state+0x768/0xa00 net/xfrm/xfrm_ipcomp.c:377
 ipcomp4_init_state+0xc2/0x7a0 net/ipv4/ipcomp.c:137
 __xfrm_init_state+0x555/0xd30 net/xfrm/xfrm_state.c:2346
 xfrm_init_state+0x1a/0x70 net/xfrm/xfrm_state.c:2372
 pfkey_msg2xfrm_state net/key/af_key.c:1297 [inline]
 pfkey_add+0x196f/0x2fc0 net/key/af_key.c:1514
 pfkey_process+0x673/0x7b0 net/key/af_key.c:2847
 pfkey_sendmsg+0x40d/0x7d0 net/key/af_key.c:3686
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45deb9
Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3f79af5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e4c0 RCX: 000000000045deb9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000118c008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4
R13: 00007ffe8c449a5f R14: 00007f3f79af69c0 R15: 000000000118bfd4
Kernel Offset: disabled
Rebooting in 86400 seconds..