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knfsd: avoid use of unitialised variables on error path when nfs exports
We need to zero various parts of 'exp' before any 'goto out', otherwise when we go to free the contents... we die. Signed-off-by: Neil Brown <neilb@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -469,6 +469,13 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
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nd.dentry = NULL;
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exp.ex_path = NULL;
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/* fs locations */
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exp.ex_fslocs.locations = NULL;
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exp.ex_fslocs.locations_count = 0;
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exp.ex_fslocs.migrated = 0;
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exp.ex_uuid = NULL;
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if (mesg[mlen-1] != '\n')
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return -EINVAL;
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mesg[mlen-1] = 0;
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@ -509,13 +516,6 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
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if (exp.h.expiry_time == 0)
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goto out;
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/* fs locations */
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exp.ex_fslocs.locations = NULL;
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exp.ex_fslocs.locations_count = 0;
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exp.ex_fslocs.migrated = 0;
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exp.ex_uuid = NULL;
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/* flags */
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err = get_int(&mesg, &an_int);
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if (err == -ENOENT)
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