This is a note to let you know that I've just added the patch titled
pstore/ram: Fix error return code in ramoops_probe()
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:
pstore-ram-fix-error-return-code-in-ramoops_probe.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.
commit f1eddf0db34eb1e251eff8614c36ef7d2830bc4b
Author: Wang Yufen <wangyufen@xxxxxxxxxx>
Date: Fri Dec 2 16:22:54 2022 +0800
pstore/ram: Fix error return code in ramoops_probe()
[ Upstream commit e1fce564900f8734edf15b87f028c57e14f6e28d ]
In the if (dev_of_node(dev) && !pdata) path, the "err" may be assigned a
value of 0, so the error return code -EINVAL may be incorrectly set
to 0. To fix set valid return code before calling to goto.
Fixes: 35da60941e44 ("pstore/ram: add Device Tree bindings")
Signed-off-by: Wang Yufen <wangyufen@xxxxxxxxxx>
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1669969374-46582-1-git-send-email-wangyufen@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index bafbab2dd039..33294dee7d7f 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -753,6 +753,7 @@ static int ramoops_probe(struct platform_device *pdev)
/* Make sure we didn't get bogus platform data pointer. */
if (!pdata) {
pr_err("NULL platform data\n");
+ err = -EINVAL;
goto fail_out;
}
@@ -760,6 +761,7 @@ static int ramoops_probe(struct platform_device *pdev)
!pdata->ftrace_size && !pdata->pmsg_size)) {
pr_err("The memory size and the record/console size must be "
"non-zero\n");
+ err = -EINVAL;
goto fail_out;
}
