This is a note to let you know that I've just added the patch titled
bcache: Strip endline when writing the label through sysfs
to the 3.11-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:
bcache-strip-endline-when-writing-the-label-through-sysfs.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From aee6f1cfff3ce240eb4b43b41ca466b907acbd2e Mon Sep 17 00:00:00 2001
From: Gabriel de Perthuis <g2p.code@xxxxxxxxx>
Date: Mon, 23 Sep 2013 23:17:28 -0700
Subject: bcache: Strip endline when writing the label through sysfs
From: Gabriel de Perthuis <g2p.code@xxxxxxxxx>
commit aee6f1cfff3ce240eb4b43b41ca466b907acbd2e upstream.
sysfs attributes with unusual characters have crappy failure modes
in Squeeze (udev 164); later versions of udev are unaffected.
This should make these characters more unusual.
Signed-off-by: Gabriel de Perthuis <g2p.code@xxxxxxxxx>
Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/sysfs.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -223,8 +223,13 @@ STORE(__cached_dev)
}
if (attr == &sysfs_label) {
- /* note: endlines are preserved */
- memcpy(dc->sb.label, buf, SB_LABEL_SIZE);
+ if (size > SB_LABEL_SIZE)
+ return -EINVAL;
+ memcpy(dc->sb.label, buf, size);
+ if (size < SB_LABEL_SIZE)
+ dc->sb.label[size] = '\0';
+ if (size && dc->sb.label[size - 1] == '\n')
+ dc->sb.label[size - 1] = '\0';
bch_write_bdev_super(dc, NULL);
if (dc->disk.c) {
memcpy(dc->disk.c->uuids[dc->disk.id].label,
Patches currently in stable-queue which might be from g2p.code@xxxxxxxxx are
queue-3.11/bcache-strip-endline-when-writing-the-label-through-sysfs.patch
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