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Code Issues Releases Wiki Activity

keys: Remove outdated __user annotations 

When the semantics of the ->read() handlers were changed such that "buffer"
is a kernel pointer, some __user annotations survived.
Since they're wrong now, get rid of them.

Fixes: d3ec10aa95 ("KEYS: Don't write out to userspace while holding key semaphore")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Ben Boeckel <mathstuf@gmail.com>
This commit is contained in:
Jann Horn 2020-11-24 00:54:00 +01:00 committed by David Howells
parent 634c21bb98
commit 796e46f9e2
1 changed files with 3 additions and 3 deletions
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6
security/keys/keyring.c
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@ -452,7 +452,7 @@ static void keyring_describe(const struct key *keyring, struct seq_file *m)
struct keyring_read_iterator_context {
size_t buflen;
size_t count;
key_serial_t __user *buffer;
key_serial_t *buffer;
};
static int keyring_read_iterator(const void *object, void *data)
@ -479,7 +479,7 @@ static int keyring_read_iterator(const void *object, void *data)
* times.
*/
static long keyring_read(const struct key *keyring,
char __user *buffer, size_t buflen)
char *buffer, size_t buflen)
{
struct keyring_read_iterator_context ctx;
long ret;
@ -491,7 +491,7 @@ static long keyring_read(const struct key *keyring,
/* Copy as many key IDs as fit into the buffer */
if (buffer && buflen) {
ctx.buffer = (key_serial_t __user *)buffer;
ctx.buffer = (key_serial_t *)buffer;
ctx.buflen = buflen;
ctx.count = 0;
ret = assoc_array_iterate(&keyring->keys,