[to-be-updated] libfs-fix-error-cast-of-negative-value-in-simple_attr_write.patch removed from -mm tree

[to-be-updated] libfs-fix-error-cast-of-negative-value-in-simple_attr_write.patch removed from -mm tree

[akpm]

The patch titled
     Subject: libfs: fix error cast of negative value in simple_attr_write()
has been removed from the -mm tree.  Its filename was
     libfs-fix-error-cast-of-negative-value-in-simple_attr_write.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
From: Yicong Yang <yangyicong@hisilicon.com>
Subject: libfs: fix error cast of negative value in simple_attr_write()

The attr->set() receive a value of u64, but simple_strtoll() is used
for doing the conversion. It will lead to the error cast if user inputs
a negative value.

Use kstrtoull() instead of simple_strtoll() to convert a string got
from the user to an unsigned value. The former will return '-EINVAL' if
it gets a negetive value, but the latter can't handle the situation
correctly.

Link: https://lkml.kernel.org/r/1605000324-7428-1-git-send-email-yangyicong@hisilicon.com
Fixes: f7b88631a897 ("fs/libfs.c: fix simple_attr_write() on 32bit machines")
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/libfs.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/libfs.c~libfs-fix-error-cast-of-negative-value-in-simple_attr_write
+++ a/fs/libfs.c
@@ -977,7 +977,9 @@ ssize_t simple_attr_write(struct file *f
 		goto out;
 
 	attr->set_buf[size] = '\0';
-	val = simple_strtoll(attr->set_buf, NULL, 0);
+	ret = kstrtoull(attr->set_buf, 0, &val);
+	if (ret)
+		goto out;
 	ret = attr->set(attr->data, val);
 	if (ret == 0)
 		ret = len; /* on success, claim we got the whole input */
_

Patches currently in -mm which might be from yangyicong@hisilicon.com are