This is a note to let you know that I've just added the patch titled partitions/msdos: FreeBSD UFS2 file systems are not recognized to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: partitions-msdos-freebsd-ufs2-file-systems-are-not-recognized.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 223220356d5ebc05ead9a8d697abb0c0a906fc81 Mon Sep 17 00:00:00 2001 From: Richard <richard@xxxxxxxxxx> Date: Sun, 21 May 2017 12:27:00 -0700 Subject: partitions/msdos: FreeBSD UFS2 file systems are not recognized From: Richard <richard@xxxxxxxxxx> commit 223220356d5ebc05ead9a8d697abb0c0a906fc81 upstream. The code in block/partitions/msdos.c recognizes FreeBSD, OpenBSD and NetBSD partitions and does a reasonable job picking out OpenBSD and NetBSD UFS subpartitions. But for FreeBSD the subpartitions are always "bad". Kernel: <bsd:bad subpartition - ignored Though all 3 of these BSD systems use UFS as a file system, only FreeBSD uses relative start addresses in the subpartition declarations. The following patch fixes this for FreeBSD partitions and leaves the code for OpenBSD and NetBSD intact: Signed-off-by: Richard Narron <comet.berkeley@xxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- block/partitions/msdos.c | 2 ++ 1 file changed, 2 insertions(+) --- a/block/partitions/msdos.c +++ b/block/partitions/msdos.c @@ -300,6 +300,8 @@ static void parse_bsd(struct parsed_part continue; bsd_start = le32_to_cpu(p->p_offset); bsd_size = le32_to_cpu(p->p_size); + if (memcmp(flavour, "bsd\0", 4) == 0) + bsd_start += offset; if (offset == bsd_start && size == bsd_size) /* full parent partition, we have it already */ continue; Patches currently in stable-queue which might be from richard@xxxxxxxxxx are queue-4.11/partitions-msdos-freebsd-ufs2-file-systems-are-not-recognized.patch