4.15-stable review patch. If anyone has any objections, please let me know.
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From: Richard Narron comet.berkeley@gmail.com
commit 5f15684bd5e5ef39d4337988864fec8012471dda upstream.
UFS partitions from newer versions of FreeBSD 10 and 11 use relative addressing for their subpartitions. But older versions of FreeBSD still use absolute addressing just like OpenBSD and NetBSD.
Instead of simply testing for a FreeBSD partition, the code needs to also test if the starting offset of the C subpartition is zero.
https://bugzilla.kernel.org/show_bug.cgi?id=197733
Signed-off-by: Richard Narron comet.berkeley@gmail.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- block/partitions/msdos.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/block/partitions/msdos.c +++ b/block/partitions/msdos.c @@ -301,7 +301,9 @@ 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) + /* FreeBSD has relative offset if C partition offset is zero */ + if (memcmp(flavour, "bsd\0", 4) == 0 && + le32_to_cpu(l->d_partitions[2].p_offset) == 0) bsd_start += offset; if (offset == bsd_start && size == bsd_size) /* full parent partition, we have it already */