This is a note to let you know that I've just added the patch titled
tools: iio: replace seekdir() in iio_generic_buffer
to the 5.4-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:
tools-iio-replace-seekdir-in-iio_generic_buffer.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2b0ed4458efad16b85fde01890fe4927740045f8
Author: Petre Rodan <petre.rodan@xxxxxxxxxxxxxxx>
Date: Mon Jan 8 12:32:20 2024 +0200
tools: iio: replace seekdir() in iio_generic_buffer
[ Upstream commit 4e6500bfa053dc133021f9c144261b77b0ba7dc8 ]
Replace seekdir() with rewinddir() in order to fix a localized glibc bug.
One of the glibc patches that stable Gentoo is using causes an improper
directory stream positioning bug on 32bit arm. That in turn ends up as a
floating point exception in iio_generic_buffer.
The attached patch provides a fix by using an equivalent function which
should not cause trouble for other distros and is easier to reason about
in general as it obviously always goes back to to the start.
https://sourceware.org/bugzilla/show_bug.cgi?id=31212
Signed-off-by: Petre Rodan <petre.rodan@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240108103224.3986-1-petre.rodan@xxxxxxxxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index 48360994c2a13..b8745873928c5 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -373,7 +373,7 @@ int build_channel_array(const char *device_dir,
goto error_close_dir;
}
- seekdir(dp, 0);
+ rewinddir(dp);
while (ent = readdir(dp), ent) {
if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
"_en") == 0) {
