[Libunwind-devel] MIPS 64 free unwind_info

[Riek, Thomas (NSN - DE/Munich)]

Hi,

I am using libunwind for a memory leak tracer on a MIPS  64-bit board.
Some binaries are stipped, i.e. no debug symbles, some are unstripped with debug symbols and some are stripped with the debug symbols stored in a seperate *.debug file.

The libunwind works fine and provides lots of nicely unwinded call stacks.
However I observed that it keeps on allocating memory (mmap) and finally crashes the board.

Deeper analysis has shown that the dwarf_cie_info_pool keeps on expanding and that there a a few calls missing to free the unwind_info.

Please have a look at the attached patch. It solved the problem for me.
<<dwarf_cie_info_pool.leak.patch>>
Best regards,

   Thomas Riek
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dwarf_cie_info_pool.leak.patch
Description: dwarf_cie_info_pool.leak.patch