| Date | Wed, 03 Aug 2011 15:02:01 -0700 | From | Greg KH <> | Subject | [101/102] dm mpath: fix potential NULL pointer in feature arg processing |
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3.0-stable review patch. If anyone has any objections, please let us know.
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From: Mike Snitzer <snitzer@redhat.com>
commit 286f367dad40beb3234a18c17391d03ba939a7f3 upstream.
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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/md/dm-mpath.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -807,6 +807,11 @@ static int parse_features(struct arg_set if (!argc) return 0; + if (argc > as->argc) { + ti->error = "not enough arguments for features"; + return -EINVAL; + } + do { param_name = shift(as); argc--;
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