----- Original Message -----
> For s390x we still use OFFSET(task_struct_thread_info) to find out
> the stack base. Since crash commit c9f932440bd06f0 which added support
> for the new CONFIG_THREAD_INFO_IN_TASK configuration (Linux 4.9-rc1)
> this is no longer possible.
>
> So fix this and use the generic task_to_stackbase() to find the stack
> base instead.
>
> Without the patch the stack backtrace for running tasks (bt -a) can be
> incomplete.
>
> Signed-off-by: Michael Holzheu <holzheu@xxxxxxxxxxxxxxxxxx>
> ---
> s390x.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/s390x.c b/s390x.c
> index 8e9cafa..e13bd59 100644
> --- a/s390x.c
> +++ b/s390x.c
> @@ -1304,8 +1304,7 @@ static void s390x_back_trace_cmd(struct bt_info *bt)
> * Print task stack
> */
> if (THIS_KERNEL_VERSION >= LINUX(2, 6, 0)) {
> - readmem(bt->task + OFFSET(task_struct_thread_info), KVADDR,
> - &low, sizeof(long), "thread info", FAULT_ON_ERROR);
> + low = task_to_stackbase(bt->task);
> } else {
> low = bt->task;
> }
> --
> 2.8.4
Thanks Michael, queued for crash-7.1.7:
https://github.com/crash-utility/crash/commit/13dc25c923adec235c5ca27149bc008b6fd6f298
Dave
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