Trying to vfree() bad address (00000000ea42b60d)
EXT4-fs (loop1): bad geometry: first data block 8960 is beyond end of filesystem (512)
WARNING: CPU: 0 PID: 26705 at mm/vmalloc.c:1509 __vunmap+0x31a/0x3f0 mm/vmalloc.c:1509
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 26705 Comm: syz-executor.3 Not tainted 4.19.163-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
BTRFS info (device loop5): turning on flush-on-commit
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
BTRFS info (device loop5): disk space caching is enabled
 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
BTRFS info (device loop5): has skinny extents
 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 56 5c d1 ff 49 81 ef 00 10 00 00 e9 be fd ff ff e8 45 5c d1 ff 4c 89 e6 48 c7 c7 00 db 72 88 e8 21 39 a5 ff <0f> 0b eb 94 e8 2d 5c d1 ff 4c 89 e6 48 c7 c7 60 db 72 88 e8 09 39
RSP: 0018:ffff8880592573b8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000012abc RSI: ffffffff814fdbb1 RDI: ffffed100b24ae69
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001
R13: fffffbfff164d646 R14: 0000607f45c31d98 R15: ffffe8ffffd31d98
 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:2348
 xfrm_state_construct net/xfrm/xfrm_user.c:626 [inline]
 xfrm_add_sa+0x1db2/0x33e4 net/xfrm/xfrm_user.c:683
 xfrm_user_rcv_msg+0x411/0x6b0 net/xfrm/xfrm_user.c:2681
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2689
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909
 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: 0033:0x45e159
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:00007f847e1d7c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e159
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007ffc8895af5f R14: 00007f847e1d89c0 R15: 000000000119c034
Kernel Offset: disabled
Rebooting in 86400 seconds..