Re: [Crash-utility] [PATCH][v2] Remove __exception_text_start and __exception_text_end for ARM64
On Mon, Dec 23, 2019 at 7:32 PM Dave Anderson <anderson(a)redhat.com> wrote:
----- Original Message -----
> __exception_text_start and __exception_text_end is used to group functions
> and place according to linker script in such a way to achieve
> kprobe blacklist. Linux commit b6e43c0e3129 ("arm64: remove __exception
> annotations") has removed __exception_text_start and
> __exception_text_end and uses NOKPROBE_SYMBOL() for blacklist kprobes.
>
> So removing references of __exception_text_start and __exception_text_end
> for ARM64.
NAK for a couple of reasons...
First, they cannot be removed for backward-compatibility purposes, and secondly
an alternative method is required for arm64_back_trace_cmd() for handling
exception frames.
We are getting following error with crash tool with latest kernel.
crash: cannot resolve "__exception_text_start" error
it is because of Linux commit b6e43c0e3129 which removes
__exception_text_start and __exception_text_end.
We need to find alternate way of fixing it.
--pk