On Tue, Nov 23, 2021 at 06:56:14PM +0100, Florian Weimer wrote:
> 8<------------------------------------------------------------------8<
> This allows switching to a different implementation for
> PT_GNU_EH_FRAME lookup in a subsequent commit.
>
> This moves some of the PT_GNU_EH_FRAME parsing out of the glibc loader
> lock that is implied by dl_iterate_phdr. However, the FDE is already
> parsed outside the lock before this change, so this does not introduce
> additional crashes in case of a concurrent dlclose.
>
> libunwind/ChangeLog
>
> * unwind-dw2-fde-dip.c (struct unw_eh_callback_data): Add hdr.
> Remove func, ret.
> (find_fde_tail): New function. Split from
> _Unwind_IteratePhdrCallback. Move the result initialization
> from _Unwind_Find_FDE.
> (_Unwind_Find_FDE): Updated to call find_fde_tail.
LGTM, thanks.
Jakub
