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| author | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:17 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:17 +1000 |
| commit | 9bbbca3a0ee09293108b67835c6bdf6196d7bcb3 (patch) | |
| tree | 32526078700e26c6e67aea5eb141fe152d1da9f7 /drivers/md | |
| parent | efe311431869b40d67911820a309f9a1a41306f3 (diff) | |
| download | op-kernel-dev-9bbbca3a0ee09293108b67835c6bdf6196d7bcb3.zip op-kernel-dev-9bbbca3a0ee09293108b67835c6bdf6196d7bcb3.tar.gz | |
Fix error paths if md_probe fails.
md_probe can fail (e.g. alloc_disk could fail) without
returning an error (as it alway returns NULL).
So when we call mddev_find immediately afterwards, we need
to check that md_probe actually succeeded. This means checking
that mdev->gendisk is non-NULL.
cc: <stable@kernel.org>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7cf512a..2580ac1 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3897,8 +3897,10 @@ static void autorun_devices(int part) md_probe(dev, NULL, NULL); mddev = mddev_find(dev); - if (!mddev) { - printk(KERN_ERR + if (!mddev || !mddev->gendisk) { + if (mddev) + mddev_put(mddev); + printk(KERN_ERR "md: cannot allocate memory for md drive.\n"); break; } |
