Re: [PATCH v2 2/3] seccomp: avoid overflow in implicit constant conversion

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On Fri, Sep 20, 2019 at 10:30:06AM +0200, Christian Brauner wrote:
> USER_NOTIF_MAGIC is assigned to int variables in this test so set it to INT_MAX
> to avoid warnings:
> 
> seccomp_bpf.c: In function ‘user_notification_continue’:
> seccomp_bpf.c:3088:26: warning: overflow in implicit constant conversion [-Woverflow]
>  #define USER_NOTIF_MAGIC 116983961184613L
>                           ^
> seccomp_bpf.c:3572:15: note: in expansion of macro ‘USER_NOTIF_MAGIC’
>   resp.error = USER_NOTIF_MAGIC;
>                ^~~~~~~~~~~~~~~~
> 
> Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
> Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
> Reviewed-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxx>
> Cc: Kees Cook <keescook@xxxxxxxxxxxx>
> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
> Cc: Will Drewry <wad@xxxxxxxxxxxx>
> Cc: Shuah Khan <shuah@xxxxxxxxxx>
> Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
> Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> Cc: Martin KaFai Lau <kafai@xxxxxx>
> Cc: Song Liu <songliubraving@xxxxxx>
> Cc: Yonghong Song <yhs@xxxxxx>
> Cc: Tycho Andersen <tycho@xxxxxxxx>

You can also add,

Reviewed-by: Tycho Andersen <tycho@xxxxxxxx>

for this one.

Tycho



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