5.15-stable review patch. If anyone has any objections, please let me know.
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From: Petre Rodan petre.rodan@subdimension.ro
[ 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@subdimension.ro Link: https://lore.kernel.org/r/20240108103224.3986-1-petre.rodan@subdimension.ro Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/iio/iio_utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c index 6a00a6eecaef0..c5c5082cb24e5 100644 --- a/tools/iio/iio_utils.c +++ b/tools/iio/iio_utils.c @@ -376,7 +376,7 @@ int build_channel_array(const char *device_dir, int buffer_idx, 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) {