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(parent: e167b2c) | patch
fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()
authorDan Carpenter <dan.carpenter@oracle.com>
Thu, 1 Sep 2022 05:18:45 +0000 (08:18 +0300)
committerXu Yilun <yilun.xu@intel.com>
Sat, 3 Sep 2022 17:48:00 +0000 (01:48 +0800)
commit939bc5453b8cbdde9f1e5110ce8309aedb1b501a
treeef91a17d334159936f3c5923151b6659102155batree | snapshot
parente167b2c3a0e631a51bbdf96f8e8550fe314cfbbdcommit | diff
fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()

The "hdr.count * sizeof(s32)" multiplication can overflow on 32 bit
systems leading to memory corruption.  Use array_size() to fix that.

Fixes: 322b598be4d9 ("fpga: dfl: introduce interrupt trigger setting API")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/YxBAtYCM38dM7yzI@kili
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
drivers/fpga/dfl.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git