BTRFS info (device loop0): has skinny extents
print_req_error: I/O error, dev loop4, sector 0
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11186 at fs/btrfs/qgroup.c:3095 btrfs_qgroup_free_meta+0x3db/0x4d0 fs/btrfs/qgroup.c:3095
BTRFS error (device loop0): fail to start transaction for status update: -28
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 11186 Comm: syz-executor.0 Not tainted 4.14.303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:btrfs_qgroup_free_meta+0x3db/0x4d0 fs/btrfs/qgroup.c:3095
RSP: 0018:ffff8880692a78a0 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff888097a00300 RCX: ffffc90005cd2000
RDX: 0000000000000a5b RSI: ffffffff82b3ad5b RDI: ffff888097a00c20
RBP: 0000000000005000 R08: ffffffff8b9b9268 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8880688705c0 R12: ffff88806c3e9480
R13: 0000000000000005 R14: ffff888097a00858 R15: 0000000000000002
 start_transaction+0x637/0xf30 fs/btrfs/transaction.c:609
 btrfs_create+0xf6/0x5d0 fs/btrfs/inode.c:6761
 lookup_open+0x77a/0x1750 fs/namei.c:3241
 do_last fs/namei.c:3334 [inline]
 path_openat+0xe08/0x2970 fs/namei.c:3571
 do_filp_open+0x179/0x3c0 fs/namei.c:3605
 do_sys_open+0x296/0x410 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f3cd38870c9
RSP: 002b:00007f3cd1df9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f3cd39a6f80 RCX: 00007f3cd38870c9
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007f3cd38e2ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf1d3b48f R14: 00007f3cd1df9300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..