disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/fs/ext4/ialloc.c
..
..
@@ -91,7 +91,7 @@
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91
 
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 	if (buffer_verified(bh))
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 		return 0;
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-	if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp))
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+	if (!grp || EXT4_MB_GRP_IBITMAP_CORRUPT(grp))
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 		return -EFSCORRUPTED;
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 	ext4_lock_group(sb, block_group);
..
..
@@ -293,7 +293,7 @@
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 	}
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 	if (!(sbi->s_mount_state & EXT4_FC_REPLAY)) {
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 		grp = ext4_get_group_info(sb, block_group);
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-		if (unlikely(EXT4_MB_GRP_IBITMAP_CORRUPT(grp))) {
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+		if (!grp || unlikely(EXT4_MB_GRP_IBITMAP_CORRUPT(grp))) {
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 			fatal = -EFSCORRUPTED;
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 			goto error_return;
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 		}
..
..
@@ -1048,7 +1048,7 @@
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 			 * Skip groups with already-known suspicious inode
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 			 * tables
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 			 */
1051
-			if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp))
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+			if (!grp || EXT4_MB_GRP_IBITMAP_CORRUPT(grp))
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 				goto next_group;
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1053
 		}
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1054
 
..
..
@@ -1183,6 +1183,10 @@
1183
1183
 
1184
1184
 		if (!(sbi->s_mount_state & EXT4_FC_REPLAY)) {
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 			grp = ext4_get_group_info(sb, group);
1186
+			if (!grp) {
1187
+				err = -EFSCORRUPTED;
1188
+				goto out;
1189
+			}
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1190
 			down_read(&grp->alloc_sem); /*
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 						     * protect vs itable
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 						     * lazyinit
..
..
@@ -1526,7 +1530,7 @@
1526
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 	}
1527
1531
 
1528
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 	gdp = ext4_get_group_desc(sb, group, &group_desc_bh);
1529
-	if (!gdp)
1533
+	if (!gdp || !grp)
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1534
 		goto out;
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1535
 
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 	/*