disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/mtd/nand/bbt.c
..
..
@@ -116,7 +116,10 @@
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 	if (entry >= nanddev_neraseblocks(nand))
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 		return -ERANGE;
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-	pos[0] &= ~GENMASK(offs + bits_per_block - 1, offs);
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+	if (bits_per_block + offs > BITS_PER_LONG)
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+		pos[0] &= ~GENMASK(BITS_PER_LONG - 1, offs);
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+	else
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+		pos[0] &= ~GENMASK(offs + bits_per_block - 1, offs);
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 	pos[0] |= val << offs;
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 	if (bits_per_block + offs > BITS_PER_LONG) {