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f7e6b19bc7
When doing a "write" ioctl call, properly check that we have permissions to do so before copying anything from userspace or anything else so we can "fail fast". This includes also covering the MEMWRITE ioctl which previously missed checking for this. Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [rw: Fixed locking issue] Signed-off-by: Richard Weinberger <richard@nod.at>
1233 lines
26 KiB
1233 lines
26 KiB