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Linux 3.19-rc7

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Merge tag 'v3.19-rc7' into perf/core, to merge fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-02-04 07:58:29 +01:00
commit 8f4bf4bcc4
206 changed files with 2194 additions and 1190 deletions
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25
kernel/bpf/syscall.c
View file

@ -150,7 +150,7 @@ static int map_lookup_elem(union bpf_attr *attr)
int ufd = attr->map_fd;
struct fd f = fdget(ufd);
struct bpf_map *map;
void *key, *value;
void *key, *value, *ptr;
int err;
if (CHECK_ATTR(BPF_MAP_LOOKUP_ELEM))
@ -169,20 +169,29 @@ static int map_lookup_elem(union bpf_attr *attr)
if (copy_from_user(key, ukey, map->key_size) != 0)
goto free_key;
err = -ENOENT;
rcu_read_lock();
value = map->ops->map_lookup_elem(map, key);
err = -ENOMEM;
value = kmalloc(map->value_size, GFP_USER);
if (!value)
goto err_unlock;
goto free_key;
rcu_read_lock();
ptr = map->ops->map_lookup_elem(map, key);
if (ptr)
memcpy(value, ptr, map->value_size);
rcu_read_unlock();
err = -ENOENT;
if (!ptr)
goto free_value;
err = -EFAULT;
if (copy_to_user(uvalue, value, map->value_size) != 0)
goto err_unlock;
goto free_value;
err = 0;
err_unlock:
rcu_read_unlock();
free_value:
kfree(value);
free_key:
kfree(key);
err_put:

5
kernel/sched/core.c
View file

@ -7292,13 +7292,12 @@ void __might_sleep(const char *file, int line, int preempt_offset)
* since we will exit with TASK_RUNNING make sure we enter with it,
* otherwise we will destroy state.
*/
if (WARN_ONCE(current->state != TASK_RUNNING,
WARN_ONCE(current->state != TASK_RUNNING && current->task_state_change,
"do not call blocking ops when !TASK_RUNNING; "
"state=%lx set at [<%p>] %pS\n",
current->state,
(void *)current->task_state_change,
(void *)current->task_state_change))
__set_current_state(TASK_RUNNING);
(void *)current->task_state_change);
___might_sleep(file, line, preempt_offset);
}