write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/fs/hugetlbfs/inode.c
..
..
@@ -1261,7 +1261,7 @@
1261
1261
 
1262
1262
 	case Opt_size:
1263
1263
 		/* memparse() will accept a K/M/G without a digit */
1264
-		if (!isdigit(param->string[0]))
1264
+		if (!param->string || !isdigit(param->string[0]))
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 			goto bad_val;
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 		ctx->max_size_opt = memparse(param->string, &rest);
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 		ctx->max_val_type = SIZE_STD;
..
..
@@ -1271,7 +1271,7 @@
1271
1271
 
1272
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 	case Opt_nr_inodes:
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1273
 		/* memparse() will accept a K/M/G without a digit */
1274
-		if (!isdigit(param->string[0]))
1274
+		if (!param->string || !isdigit(param->string[0]))
1275
1275
 			goto bad_val;
1276
1276
 		ctx->nr_inodes = memparse(param->string, &rest);
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1277
 		return 0;
..
..
@@ -1287,7 +1287,7 @@
1287
1287
 
1288
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 	case Opt_min_size:
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1289
 		/* memparse() will accept a K/M/G without a digit */
1290
-		if (!isdigit(param->string[0]))
1290
+		if (!param->string || !isdigit(param->string[0]))
1291
1291
 			goto bad_val;
1292
1292
 		ctx->min_size_opt = memparse(param->string, &rest);
1293
1293
 		ctx->min_val_type = SIZE_STD;