cxl/region: prevent underflow in ways_to_cxl()

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The "ways" variable comes from the user.  The ways_to_cxl() function
has an upper bound but it doesn't check for negatives.  Make
the "ways" variable an unsigned int to fix this bug.

Fixes: 80d10a6cee ("cxl/region: Add interleave geometry attributes")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Yueo3NV2hFCXx1iV@kili
[djbw: fixup interleave_ways_store() to only accept unsigned input]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Dan Carpenter 2022-08-01 13:20:12 +03:00 • committed by Dan Williams

parent 88ab1dde79

commit c7e3548cac

2 changed files with 4 additions and 3 deletions

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5

drivers/cxl/core/region.c

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2

drivers/cxl/cxl.h

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