net/9p: Fix crash due to bad mount parameters.
It is not safe to use match_int without checking the token type returned by match_token (especially when the token type returned is Opt_err and args is empty). Fix it. Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -735,6 +735,7 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
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if (!*p)
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continue;
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token = match_token(p, tokens, args);
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if (token != Opt_err) {
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r = match_int(&args[0], &option);
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if (r < 0) {
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P9_DPRINTK(P9_DEBUG_ERROR,
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@ -742,6 +743,7 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
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ret = r;
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continue;
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}
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}
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switch (token) {
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case Opt_port:
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opts->port = option;
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