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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
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1 changed files with 5 additions and 0 deletions
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@ -807,6 +807,11 @@ static int parse_features(struct arg_set *as, struct multipath *m)
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if (!argc)
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if (!argc)
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return 0;
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return 0;
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if (argc > as->argc) {
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ti->error = "not enough arguments for features";
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return -EINVAL;
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}
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do {
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do {
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param_name = shift(as);
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param_name = shift(as);
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argc--;
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argc--;
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