This is a note to let you know that I've just added the patch titled
regmap: debugfs: Ensure we don't underflow when printing access masks
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regmap-debugfs-ensure-we-don-t-underflow-when-printing-access-masks.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b763ec17ac762470eec5be8ebcc43e4f8b2c2b82 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@xxxxxxxxxx>
Date: Sat, 19 Sep 2015 07:00:18 -0700
Subject: regmap: debugfs: Ensure we don't underflow when printing access masks
From: Mark Brown <broonie@xxxxxxxxxx>
commit b763ec17ac762470eec5be8ebcc43e4f8b2c2b82 upstream.
If a read is attempted which is smaller than the line length then we may
underflow the subtraction we're doing with the unsigned size_t type so
move some of the calculation to be additions on the right hand side
instead in order to avoid this.
Reported-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/regmap/regmap-debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -419,7 +419,7 @@ static ssize_t regmap_access_read_file(s
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
- if (buf_pos >= count - 1 - tot_len)
+ if (buf_pos + tot_len + 1 >= count)
break;
/* Format the register */
Patches currently in stable-queue which might be from broonie@xxxxxxxxxx are
queue-3.10/regmap-debugfs-ensure-we-don-t-underflow-when-printing-access-masks.patch
queue-3.10/spi-fix-documentation-of-spi_alloc_master.patch
queue-3.10/asoc-fix-broken-pxa-soc-support.patch
queue-3.10/asoc-dwc-correct-irq-clear-method.patch
queue-3.10/regmap-debugfs-don-t-bother-actually-printing-when-calculating-max-length.patch
queue-3.10/spi-spi-pxa2xx-check-status-register-to-determine-if-sssr_tint-is-disabled.patch
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