The patch titled
Subject: seq_file: fix passing wrong private data
has been removed from the -mm tree. Its filename was
seq_file-fix-passing-wrong-private-data.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Subject: seq_file: fix passing wrong private data
DEFINE_PROC_SHOW_ATTRIBUTE() is supposed to be used to define a series
of functions and variables to register proc file easily. And the users
can use proc_create_data() to pass their own private data and get it
via seq->private in the callback. Unfortunately, the proc file system
use PDE_DATA() to get private data instead of inode->i_private. So fix
it. Fortunately, there only one user of it which does not pass any
private data, so this bug does not break any in-tree codes.
Link: https://lkml.kernel.org/r/20211029032638.84884-1-songmuchun@xxxxxxxxxxxxx
Fixes: 97a32539b956 ("proc: convert everything to "struct proc_ops"")
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Cc: Florent Revest <revest@xxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Christian Brauner <christian.brauner@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/seq_file.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/seq_file.h~seq_file-fix-passing-wrong-private-data
+++ a/include/linux/seq_file.h
@@ -209,7 +209,7 @@ static const struct file_operations __na
#define DEFINE_PROC_SHOW_ATTRIBUTE(__name) \
static int __name ## _open(struct inode *inode, struct file *file) \
{ \
- return single_open(file, __name ## _show, inode->i_private); \
+ return single_open(file, __name ## _show, PDE_DATA(inode)); \
} \
\
static const struct proc_ops __name ## _proc_ops = { \
_
Patches currently in -mm which might be from songmuchun@xxxxxxxxxxxxx are
