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Subject[RFC PATCH 3/7] rslib: decode_rs: Fix length parameter check
Date
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>
---
lib/reed_solomon/decode_rs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/reed_solomon/decode_rs.c b/lib/reed_solomon/decode_rs.c
index 3313bf944ff1..22006eaa41e6 100644
--- a/lib/reed_solomon/decode_rs.c
+++ b/lib/reed_solomon/decode_rs.c
@@ -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)
--
2.17.2
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