On Thu, 24 Aug 2023 16:42:10 +1000, Michael Ellerman wrote:
> A thread started via eg. user_mode_thread() runs in the kernel to begin
> with and then may later return to userspace. While it's running in the
> kernel it has a pt_regs at the base of its kernel stack, but that
> pt_regs is all zeroes.
On Thu, 24 Aug 2023 at 06:42, Michael Ellerman wrote:
>
> A thread started via eg. user_mode_thread() runs in the kernel to begin
> with and then may later return to userspace. While it's running in the
> kernel it has a pt_regs at the base of its kernel stack, but that
> pt_regs is all zeroes.
>
A thread started via eg. user_mode_thread() runs in the kernel to begin
with and then may later return to userspace. While it's running in the
kernel it has a pt_regs at the base of its kernel stack, but that
pt_regs is all zeroes.
If the thread oopses in that state, it leads to an ugly stack trac
