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| author | Mike Snitzer <snitzer@redhat.com> | 2011-08-02 13:32:00 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2011-08-02 13:32:00 +0200 |
| commit | 286f367dad40beb3234a18c17391d03ba939a7f3 (patch) | |
| tree | 50e7b04332ce6e8ab920284528d555e67aae2081 /drivers/md | |
| parent | dm snapshot: flush disk cache when merging (diff) | |
| download | linux-286f367dad40beb3234a18c17391d03ba939a7f3.tar.xz linux-286f367dad40beb3234a18c17391d03ba939a7f3.zip | |
dm mpath: fix potential NULL pointer in feature arg processing
Avoid dereferencing a NULL pointer if the number of feature arguments
supplied is fewer than indicated.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: stable@kernel.org
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index c3547016f0f1..adf851a081bd 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -807,6 +807,11 @@ static int parse_features(struct arg_set *as, struct multipath *m) if (!argc) return 0; + if (argc > as->argc) { + ti->error = "not enough arguments for features"; + return -EINVAL; + } + do { param_name = shift(as); argc--; |