Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5283ec72 authored by Richard Weinberger's avatar Richard Weinberger
Browse files

ubi: Check whether the Fastmap anchor matches the super block 



This helps to detect cases where an user copies an UBI image to
another target with different bad blocks.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent fdf10ed7

drivers/mtd/ubi/fastmap.c

+7 −0
Original line number Diff line number Diff line
@@ -975,6 +975,13 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, 
			goto free_hdr;

		}



		if (i == 0 && pnum != fm_anchor) {

			ubi_err(ubi, "Fastmap anchor PEB mismatch: PEB: %i vs. %i",

				pnum, fm_anchor);

			ret = UBI_BAD_FASTMAP;

			goto free_hdr;

		}



		ret = ubi_io_read_ec_hdr(ubi, pnum, ech, 0);

		if (ret && ret != UBI_IO_BITFLIPS) {

			ubi_err(ubi, "unable to read fastmap block# %i EC (PEB: %i)",