From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 24 Jan 2022 14:47:55 +0000 (+0100)
Subject: 4.19-stable patches
X-Git-Tag: v4.4.300~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7ef41d0235118ea7712d00a3f943ff97a90ecad4;p=thirdparty%2Fkernel%2Fstable-queue.git

4.19-stable patches

added patches:
	mtd-nand-bbt-fix-corner-case-in-bad-block-table-handling.patch
---

diff --git a/queue-4.19/mtd-nand-bbt-fix-corner-case-in-bad-block-table-handling.patch b/queue-4.19/mtd-nand-bbt-fix-corner-case-in-bad-block-table-handling.patch
new file mode 100644
index 00000000000..ab4bf890313
--- /dev/null
+++ b/queue-4.19/mtd-nand-bbt-fix-corner-case-in-bad-block-table-handling.patch
@@ -0,0 +1,36 @@
+From fd0d8d85f7230052e638a56d1bfea170c488e6bc Mon Sep 17 00:00:00 2001
+From: "Doyle, Patrick" <pdoyle@irobot.com>
+Date: Tue, 6 Apr 2021 10:47:08 +0900
+Subject: mtd: nand: bbt: Fix corner case in bad block table handling
+
+From: Doyle, Patrick <pdoyle@irobot.com>
+
+commit fd0d8d85f7230052e638a56d1bfea170c488e6bc upstream.
+
+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>
+Signed-off-by: Yoshio Furuyama <ytc-mb-yfuruyama7@kioxia.com>
+[<miquel.raynal@bootlin.com>: Fixed the title]
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
+Link: https://lore.kernel.org/linux-mtd/774a92693f311e7de01e5935e720a179fb1b2468.1616635406.git.ytc-mb-yfuruyama7@kioxia.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/mtd/nand/bbt.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mtd/nand/bbt.c
++++ b/drivers/mtd/nand/bbt.c
+@@ -123,7 +123,7 @@ int nanddev_bbt_set_block_status(struct
+ 		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;
diff --git a/queue-4.19/series b/queue-4.19/series
index 5f54d7a7646..0c01cf99b49 100644
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -236,3 +236,4 @@ net_sched-restore-mpu-xxx-handling.patch
 bcmgenet-add-wol-irq-check.patch
 scripts-dtc-dtx_diff-remove-broken-example-from-help-text.patch
 lib82596-fix-irq-check-in-sni_82596_probe.patch
+mtd-nand-bbt-fix-corner-case-in-bad-block-table-handling.patch