Corrupted and unrecoverable file system during the snapshot receive

Hi.

My system: Fedora 23, kernel-4.7.10-100.fc23.x86_64 btrfs-progs-4.4.1-1.fc23.x86_64

Testing the remote differential receive (via ssh and in local network) of 24 sequential snapshots, and simultaneously deleting the snapshot, (in the same file system, but in a different subvolume), there has been an file access error, and the file system has corrupt.

Both scrub, both recovery and clear_cache mount options, both btrfsck, have failed, the file system is left in a state unusable.

After reformatting the filesystem, remote receive of 24 snapshots worked properly.

The file system is used exclusively for receive the snapshot, it is composed of a single device.
The initial snapshot is a linux installation of 50Gb.

I think that there was a race condition between the receive and deletion of snapshots (that were performed on two different subvolume).

Best regards.

gdb

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