Re: [PATCH] virsh: Fix overflow error of freepages command

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On 3/5/24 09:29, Adam Julis wrote:
> Trying to print pages of a size larger than the UINT_MAX of the given platform, a system error was printed, but this is a legitimate request, fixed


I'd like to see explained here why UINT_MAX is not good enough and why
we can't use larger type (unsigned long long).

Also, please put 'Resolves: $URL' line here as this fixes an issue
reported in jira.

> 
> Signed-off-by: Adam Julis <ajulis@xxxxxxxxxx>
> ---
>  tools/virsh-host.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/virsh-host.c b/tools/virsh-host.c
> index 6c14be865f..dc1282e718 100644
> --- a/tools/virsh-host.c
> +++ b/tools/virsh-host.c
> @@ -335,7 +335,7 @@ cmdFreepages(vshControl *ctl, const vshCmd *cmd)
>  
>      VSH_EXCLUSIVE_OPTIONS_VAR(all, cellno);
>  
> -    if (vshCommandOptScaledInt(ctl, cmd, "pagesize", &bytes, 1024, UINT_MAX) < 0)
> +    if (vshCommandOptScaledInt(ctl, cmd, "pagesize", &bytes, 1024, UINT_MAX*1024ULL) < 0)

Nit pick - we like to write this as UINT_MAX * 1024ULL.

>          goto cleanup;
>      kibibytes = VIR_DIV_UP(bytes, 1024);
>  

Michal
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