Evolution-X-Devices/kernel_realme_sm7125
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

UPSTREAM: bpf: Fix error return code in map_lookup_and_delete_elem()

Browse Source 
[ 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: bd513cd08f10 ("bpf: add MAP_LOOKUP_AND_DELETE_ELEM syscall")
Change-Id: I72827ff32b4603f5922cf60abbc9dff3d6dd4d88
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:
Wei Yongjun
2020-04-30 08:18:51 +00:00
committed by theshaenix
parent b57e69ca99
commit 0b726f6d80
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/bpf/syscall.c
View File

@@ -1148,8 +1148,10 @@ 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;