Commit a343536f authored Jun 20, 2019 by Ferdinand Blomqvist Committed by Thomas Gleixner Jun 26, 2019

rslib: decode_rs: Fix length parameter check



The length of the data load must be at least one. Or in other words,
there must be room for at least 1 data and nroots parity symbols after
shortening the RS code.

Signed-off-by: Ferdinand Blomqvist <ferdinand.blomqvist@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190620141039.9874-4-ferdinand.blomqvist@gmail.com

parent 2034a42d

lib/reed_solomon/decode_rs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -39,7 +39,7 @@

		/* Check length parameter for validity */
		pad = nn - nroots - len;
		BUG_ON(pad < 0 \|\| pad >= nn);
		BUG_ON(pad < 0 \|\| pad >= nn - nroots);

		/* Does the caller provide the syndrome ? */
		if (s != NULL)

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