diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-18 15:43:52 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-04-23 10:52:48 -0400 |
| commit | ff847781049c37dff9ad4af2bf2d7aad02622f96 (patch) | |
| tree | e00c2cc328c2d7c5af3b98adb7804cc14621e08c /fs/pstore/ram_core.c | |
| parent | daa98831dddc80c52e70b31921dffe493ced22b5 (diff) | |
pstore: switch to copy_from_user()
don't bother trying to do bulk access_ok()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pstore/ram_core.c')
| -rw-r--r-- | fs/pstore/ram_core.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index c917c191e78c..aa8e0b65ff1a 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -283,7 +283,7 @@ static int notrace persistent_ram_update_user(struct persistent_ram_zone *prz, const void __user *s, unsigned int start, unsigned int count) { struct persistent_ram_buffer *buffer = prz->buffer; - int ret = unlikely(__copy_from_user(buffer->data + start, s, count)) ? + int ret = unlikely(copy_from_user(buffer->data + start, s, count)) ? -EFAULT : 0; persistent_ram_update_ecc(prz, start, count); return ret; @@ -348,8 +348,6 @@ int notrace persistent_ram_write_user(struct persistent_ram_zone *prz, int rem, ret = 0, c = count; size_t start; - if (unlikely(!access_ok(s, count))) - return -EFAULT; if (unlikely(c > prz->buffer_size)) { s += c - prz->buffer_size; c = prz->buffer_size; |