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| author | Ferdinand Blomqvist <ferdinand.blomqvist@gmail.com> | 2019-06-20 17:10:35 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-06-26 14:55:46 +0200 |
| commit | a343536f8f482be6932803a023f46d0fa723ae56 (patch) | |
| tree | 422e78f437f3c84254c519e51eee8689e673b5c7 | |
| parent | 2034a42d1747fc1e1eeef2c6f1789c4d0762cb9c (diff) | |
| download | linux-stable-a343536f8f482be6932803a023f46d0fa723ae56.tar.gz linux-stable-a343536f8f482be6932803a023f46d0fa723ae56.tar.bz2 linux-stable-a343536f8f482be6932803a023f46d0fa723ae56.zip | |
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.c | 2 |
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) |