misc: xilinx_sdfec: Prevent integer overflow in xsdfec_table_write()

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The checking here needs to handle integer overflows because "offset" and
"len" come from the user.

Fixes: 20ec628e80 ("misc: xilinx_sdfec: Add ability to configure LDPC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Dragan Cvetic <dragan.cvetic@xilinx.com>
Link: https://lore.kernel.org/r/20190821071122.GD26957@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dan Carpenter 2019-08-21 10:11:22 +03:00 • committed by Greg Kroah-Hartman

parent 56a635c0ec

commit 6123f1fe53

1 changed files with 3 additions and 1 deletions

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drivers/misc/xilinx_sdfec.c

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