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Re: [Libunwind-devel] unw_get_proc_info is not signal-safe with debug-fr
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From: |
Paul Pluzhnikov |
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Subject: |
Re: [Libunwind-devel] unw_get_proc_info is not signal-safe with debug-frames enabled |
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Date: |
Thu, 6 Sep 2018 16:49:56 -0700 |
On Thu, Sep 6, 2018 at 3:56 PM Doug Moore <address@hidden> wrote:
>
> It seems that unw_get_proc_info calls dwarf_make_proc_info, calls
> fetch_proc_info, calls dwarf_find_proc_info, calls dl_iterate_phdr,
> calls dwarf_callback, calls dwarf_find_debug_frame, calls calloc, and
> callloc is not signal safe on the aarch64 device I'm testing on.
FWIW, dl_iterate_phdr in GLIBC is not async signal safe either (may
call malloc).
https://lists.nongnu.org/archive/html/libunwind-devel/2010-05/msg00006.html
https://lists.nongnu.org/archive/html/libunwind-devel/2016-02/msg00024.html
etc.
--
Paul Pluzhnikov