On Thu, Aug 6, 2020 at 9:25 AM Dave Wysochanski <dwysocha@xxxxxxxxxx> wrote:
>
> Commit c86250bce29f introduced the useful '-T' option to print the
> log timestamp in human-readable form. However, this option does
> not work when crash is invoked with '--minimal' mode, and if tried,
> crash will spin at 100% and continuously crash at a divide by 0
> because machdep->hz == 0.
>
> Fix this by disallowing this option in minimal mode. In addition,
> only calculate the logic to calculate kt->boot_date.tv_sec
> when this option is enabled.
>
> Fixes: c86250bce29f ("Introduction of the "log -T" option...")
> Signed-off-by: Dave Wysochanski <dwysocha@xxxxxxxxxx>
> ---
> kernel.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/kernel.c b/kernel.c
> index 5ed6021..95119f3 100644
> --- a/kernel.c
> +++ b/kernel.c
> @@ -4939,7 +4939,10 @@ cmd_log(void)
> if (argerrs)
> cmd_usage(pc->curcmd, SYNOPSIS);
>
> - if (kt->boot_date.tv_sec == 0) {
> + if (msg_flags & SHOW_LOG_CTIME && pc->flags & MINIMAL_MODE)
> + error(FATAL, "log: option 'T' not available in minimal mode\n");
> +
> + if (msg_flags & SHOW_LOG_CTIME && kt->boot_date.tv_sec == 0) {
> ulonglong uptime_jiffies;
> ulong uptime_sec;
> get_uptime(NULL, &uptime_jiffies);
> --
> 2.27.0
>
> --
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>
Sorry for the spam - please ignore. I'm going to submit a v3 with
proper acknowledgments.
Thanks
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