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rslib: decode_rs: Fix length parameter check

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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
This commit is contained in:
Ferdinand Blomqvist 2019-06-20 17:10:35 +03:00 committed by Thomas Gleixner
parent 2034a42d17
commit a343536f8f
1 changed files with 1 additions and 1 deletions
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2
lib/reed_solomon/decode_rs.c
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@ -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)