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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-07-22 19:09:15 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2015-07-24 05:37:51 +0200 |
| commit | b0c26a79d6993b280931f8e2b406ca4b220bb58f (patch) | |
| tree | 5180d2cbe3ac691e95afc978630a4f1c8521b9c8 /drivers/md/md.c | |
| parent | md: Skip cluster setup in case of error while reading bitmap (diff) | |
| download | linux-b0c26a79d6993b280931f8e2b406ca4b220bb58f.tar.xz linux-b0c26a79d6993b280931f8e2b406ca4b220bb58f.zip | |
md: Return error if request_module fails and returns positive value
request_module() can return 256 (process exited) in some cases,
which is not as specified in the documentation before the
request_module() definition. Convert the error to -ENOENT.
The positive error number results in bitmap_create() returning
a value that is meant to be an error but doesn't look like one,
so it is dereferenced as a point and causes a crash.
(not needed for stable as this is "experimental" code)
Fixes: edb39c9deda8 ("Introduce md_cluster_operations to handle cluster functions")
Signed-off-By: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/md/md.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 5025b3ec13cd..0fcf6de2415a 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7439,7 +7439,7 @@ int md_setup_cluster(struct mddev *mddev, int nodes) err = request_module("md-cluster"); if (err) { pr_err("md-cluster module not found.\n"); - return err; + return -ENOENT; } spin_lock(&pers_lock); |