mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
bpf: Fix error return code in map_lookup_and_delete_elem()
[ Upstream commit 7f645462ca01d01abb94d75e6768c8b3ed3a188b ]
Fix to return negative error code -EFAULT from the copy_to_user() error
handling case instead of 0, as done elsewhere in this function.
Fixes: bd513cd08f
("bpf: add MAP_LOOKUP_AND_DELETE_ELEM syscall")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200430081851.166996-1-weiyongjun1@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
5b96668b63
commit
5d47b3d6b4
|
@ -1146,8 +1146,10 @@ static int map_lookup_and_delete_elem(union bpf_attr *attr)
|
|||
if (err)
|
||||
goto free_value;
|
||||
|
||||
if (copy_to_user(uvalue, value, value_size) != 0)
|
||||
if (copy_to_user(uvalue, value, value_size) != 0) {
|
||||
err = -EFAULT;
|
||||
goto free_value;
|
||||
}
|
||||
|
||||
err = 0;
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user