Commit-ID: a343536f8f482be6932803a023f46d0fa723ae56 Gitweb: https://git.kernel.org/tip/a343536f8f482be6932803a023f46d0fa723ae56 Author: Ferdinand Blomqvist <ferdinand.blomqv...@gmail.com> AuthorDate: Thu, 20 Jun 2019 17:10:35 +0300 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Wed, 26 Jun 2019 14:55:46 +0200
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.blomqv...@gmail.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Link: https://lkml.kernel.org/r/20190620141039.9874-4-ferdinand.blomqv...@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)
