diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2014-07-21 19:07:12 -0700 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-08-19 11:53:08 -0700 |
| commit | 1001ff7a4f64f3f4264e69d3ed70ff428f627e01 (patch) | |
| tree | 9b673e00fda7873a9958cf5d60f66a49cf2e020c /drivers/mtd/tests/nandbiterrs.c | |
| parent | 8c3f3f1d7941bcb25590b784f84accd7dcb44ba3 (diff) | |
mtd: tests: fix integer overflow issues
These multiplications are done with 32-bit arithmetic, then converted to
64-bit. We should widen the integers first to prevent overflow. This
could be a problem for large (>4GB) MTD's.
Detected by Coverity.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Diffstat (limited to 'drivers/mtd/tests/nandbiterrs.c')
| -rw-r--r-- | drivers/mtd/tests/nandbiterrs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/tests/nandbiterrs.c b/drivers/mtd/tests/nandbiterrs.c index 6f976159611f..273f7e553954 100644 --- a/drivers/mtd/tests/nandbiterrs.c +++ b/drivers/mtd/tests/nandbiterrs.c @@ -364,7 +364,7 @@ static int __init mtd_nandbiterrs_init(void) pr_info("Device uses %d subpages of %d bytes\n", subcount, subsize); - offset = page_offset * mtd->writesize; + offset = (loff_t)page_offset * mtd->writesize; eraseblock = mtd_div_by_eb(offset, mtd); pr_info("Using page=%u, offset=%llu, eraseblock=%u\n", |