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authorFerdinand Blomqvist <ferdinand.blomqvist@gmail.com>2019-06-20 17:10:35 +0300
committerThomas Gleixner <tglx@linutronix.de>2019-06-26 14:55:46 +0200
commita343536f8f482be6932803a023f46d0fa723ae56 (patch)
tree422e78f437f3c84254c519e51eee8689e673b5c7
parent2034a42d1747fc1e1eeef2c6f1789c4d0762cb9c (diff)
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
-rw-r--r--lib/reed_solomon/decode_rs.c2
1 files changed, 1 insertions, 1 deletions
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)