Messages in this thread | | | Date | Tue, 11 Jan 2022 16:33:26 +0100 | Subject | Re: [PATCH v2 1/2] Fix corner case in bad block table handling. | From | Frieder Schrempf <> |
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Hi stable maintainers,
On 06.04.21 03:47, Yoshio Furuyama wrote: > From: "Doyle, Patrick" <pdoyle@irobot.com> > > In the unlikely event that both blocks 10 and 11 are marked as bad (on a > 32 bit machine), then the process of marking block 10 as bad stomps on > cached entry for block 11. There are (of course) other examples. > > Signed-off-by: Patrick Doyle <pdoyle@irobot.com> > Reviewed-by: Richard Weinberger <richard@nod.at>
We have systems on which this patch fixes real failures. Could you please add the upstream patch fd0d8d85f723 ("mtd: nand: bbt: Fix corner case in bad block table handling") to the stable queues for 4.19, 5.4, 5.10?
Thanks!
Cc: stable@vger.kernel.org Fixes: 9c3736a3de21 ("mtd: nand: Add core infrastructure to deal with NAND devices")
> --- > drivers/mtd/nand/bbt.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mtd/nand/bbt.c b/drivers/mtd/nand/bbt.c > index 044adf913854..64af6898131d 100644 > --- a/drivers/mtd/nand/bbt.c > +++ b/drivers/mtd/nand/bbt.c > @@ -123,7 +123,7 @@ int nanddev_bbt_set_block_status(struct nand_device *nand, unsigned int entry, > unsigned int rbits = bits_per_block + offs - BITS_PER_LONG; > > pos[1] &= ~GENMASK(rbits - 1, 0); > - pos[1] |= val >> rbits; > + pos[1] |= val >> (bits_per_block - rbits); > } > > return 0;
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