diff options
author | Daniel T. Lee <danieltimlee@gmail.com> | 2022-12-18 07:14:53 +0100 |
---|---|---|
committer | Martin KaFai Lau <martin.lau@kernel.org> | 2022-12-19 23:21:05 +0100 |
commit | 68be98e0f4191abc64c871e3e461f275715eaf67 (patch) | |
tree | 6fcebd2b0a0d50eab3042f2417678ca80303c1e5 /drivers/mcb | |
parent | samples/bpf: replace meaningless counter with tracex4 (diff) | |
download | linux-68be98e0f4191abc64c871e3e461f275715eaf67.tar.xz linux-68be98e0f4191abc64c871e3e461f275715eaf67.zip |
samples/bpf: fix uninitialized warning with test_current_task_under_cgroup
Currently, compiling samples/bpf with LLVM warns about the uninitialized
use of variable with test_current_task_under_cgroup.
./samples/bpf/test_current_task_under_cgroup_user.c:57:6:
warning: variable 'cg2' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (setup_cgroup_environment())
^~~~~~~~~~~~~~~~~~~~~~~~~~
./samples/bpf/test_current_task_under_cgroup_user.c:106:8:
note: uninitialized use occurs here
close(cg2);
^~~
./samples/bpf/test_current_task_under_cgroup_user.c:57:2:
note: remove the 'if' if its condition is always false
if (setup_cgroup_environment())
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./samples/bpf/test_current_task_under_cgroup_user.c:19:9:
note: initialize the variable 'cg2' to silence this warning
int cg2, idx = 0, rc = 1;
^
= 0
1 warning generated.
This commit resolve this compiler warning by pre-initialize the variable
with error for safeguard.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221218061453.6287-4-danieltimlee@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'drivers/mcb')
0 files changed, 0 insertions, 0 deletions