diff options
| author | Richard Weinberger <richard@nod.at> | 2018-08-29 14:19:32 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-08-31 08:23:29 +0200 |
| commit | b9eedf1a83b1436c15aa43ef5cd4c99669f666dd (patch) | |
| tree | 62802501e6fdb3e72324620e3b0d4801c87dc159 /drivers/mtd/ubi | |
| parent | f70cee7bcc1b09eff9f277e0913b70fc87418d47 (diff) | |
| download | barebox-b9eedf1a83b1436c15aa43ef5cd4c99669f666dd.tar.gz barebox-b9eedf1a83b1436c15aa43ef5cd4c99669f666dd.tar.xz | |
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: Richard Weinberger <richard@nod.at>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mtd/ubi')
| -rw-r--r-- | drivers/mtd/ubi/fastmap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index 4a8de1db40..d60f89fdb3 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -908,6 +908,13 @@ 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)", |