scsi: mpt3sas: Avoid possible run-time warning with long manufacturer strings

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The prior strscpy() replacement of strncpy() here expected the
manufacture_reply strings to be NUL-terminated, but it is possible
they are not, as the code pattern here shows, e.g., edev->vendor_id
being exactly 1 character larger than manufacture_reply->vendor_id,
and the replaced strncpy() was copying only up to the size of the
source character array. Replace this with memtostr(), which is the
unambiguous way to convert a maybe not-NUL-terminated character array
into a NUL-terminated string.

Fixes: b7e9712a02 ("scsi: mpt3sas: Replace deprecated strncpy() with strscpy()")
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Marco Patalano <mpatalan@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240410023155.2100422-3-keescook@chromium.org
Signed-off-by: Kees Cook <kees@kernel.org>

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Kees Cook 2024-04-09 19:31:52 -07:00 • committed by Kees Cook

parent 1613e604df

commit adb77bba9c

2 changed files with 6 additions and 10 deletions

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2

drivers/scsi/mpt3sas/mpt3sas_base.c

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14

drivers/scsi/mpt3sas/mpt3sas_transport.c

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