tree d6a70d29e5eae6ca9cf3ca197db9f0ab8a3b5e51
parent f234012f52a37e48f2330e1ca2df69800e797c3b
author Mikulas Patocka <mpatocka@redhat.com> 1245661682 +0100
committer Alasdair G Kergon <agk@redhat.com> 1245661682 +0100

dm mpath: validate table argument count

The parser reads the argument count as a number but doesn't check that
sufficient arguments are supplied. This command triggers the bug:

dmsetup create mpath --table "0 `blockdev --getsize /dev/mapper/cr0`
    multipath 0 0 2 1 round-robin 1000 0 1 1 /dev/mapper/cr0
    round-robin 0 1 1 /dev/mapper/cr1 1000"
kernel BUG at drivers/md/dm-mpath.c:530!

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>