This is a note to let you know that I've just added the patch titled ALSA: info: Fix llseek return value when using callback to the 4.19-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: alsa-info-fix-llseek-return-value-when-using-callback.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9be080edcca330be4af06b19916c35227891e8bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?= <amadeuszx.slawinski@xxxxxxxxxxxxxxx> Date: Wed, 17 Aug 2022 14:49:24 +0200 Subject: ALSA: info: Fix llseek return value when using callback MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx> commit 9be080edcca330be4af06b19916c35227891e8bc upstream. When using callback there was a flow of ret = -EINVAL if (callback) { offset = callback(); goto out; } ... offset = some other value in case of no callback; ret = offset; out: return ret; which causes the snd_info_entry_llseek() to return -EINVAL when there is callback handler. Fix this by setting "ret" directly to callback return value before jumping to "out". Fixes: 73029e0ff18d ("ALSA: info - Implement common llseek for binary mode") Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220817124924.3974577-1-amadeuszx.slawinski@xxxxxxxxxxxxxxx Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/core/info.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/sound/core/info.c +++ b/sound/core/info.c @@ -127,9 +127,9 @@ static loff_t snd_info_entry_llseek(stru entry = data->entry; mutex_lock(&entry->access); if (entry->c.ops->llseek) { - offset = entry->c.ops->llseek(entry, - data->file_private_data, - file, offset, orig); + ret = entry->c.ops->llseek(entry, + data->file_private_data, + file, offset, orig); goto out; } Patches currently in stable-queue which might be from amadeuszx.slawinski@xxxxxxxxxxxxxxx are queue-4.19/alsa-info-fix-llseek-return-value-when-using-callback.patch