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0f68027e9c
The "PAGE_SIZE - 2 - size" calculation in legacy_parse_param() is an unsigned type so a large value of "size" results in a high positive value instead of a negative value as expected. Fix this by getting rid of the subtraction. Signed-off-by: Jamie Hill-Daniel <jamie@hill-daniel.co.uk> Signed-off-by: William Liu <willsroot@protonmail.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Acked-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 722d94847de29310e8aa03fcbdb41fc92c521756) Bug: 213421437 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ica4c894715daae0d4393a377ac3e81260a651df9