commit: 286f367dad40beb3234a18c17391d03ba939a7f3 From: Mike Snitzer <[email protected]> Date: Tue, 2 Aug 2011 12:32:00 +0100 Subject: [PATCH] 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 <[email protected]> Signed-off-by: Alasdair G Kergon <[email protected]> Cc: [email protected] --- 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 c354701..adf851a 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--; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
