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(parent: 12b38ea) | patch
Staging: comedi: Return -EFAULT if copy_to_user() fails
authorDan Carpenter <dan.carpenter@oracle.com>
Wed, 2 Dec 2020 06:43:49 +0000 (09:43 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 28 Dec 2020 14:14:53 +0000 (15:14 +0100)
commitcab36da4bf1a35739b091b73714a39a1bbd02b05
tree8e33136726e900c8bfb12faebae8193e9b075dc7tree | snapshot
parent12b38ea040b3bb2a30eb9cd488376df5be7ea81fcommit | diff
Staging: comedi: Return -EFAULT if copy_to_user() fails

Return -EFAULT on error instead of the number of bytes remaining to be
copied.

Fixes: bac42fb21259 ("comedi: get rid of compat_alloc_user_space() mess in COMEDI_CMD{,TEST} compat")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/X8c3pfwFy2jpy4BP@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/comedi_fops.c diff | blob | history
Domain: System / Kernel;