Rachita Kothiyal wrote: > Hi Dave > > The following patch adds support for DWARF CFI based stack unwinding > for crash. Since this method uses the call frame instructions for > unwinding, it generates better backtraces than the existing backtrace > mechanism. So when we have the unwind info available, this new method > will be called, else we fall back to the existing mechanism. > > There still are a couple of things which need to be done, viz > 1. Extend to obtaining unwind info from modules as well(currently > doing only for the kernel) > 2. Currently reading the unwind info from eh_frame section only(ie > __start_unwind to __end_unwind). Need to add facility to read from > the .debug_frame(if .debug_frame is present in cases where .eh_frame > is absent. Will have to read from the vmlinux if we want to read the > .debug_frame info) > 3. Add FRAME_POINTER support. > > Please provide your suggestions and comments. > > Thanks > Rachita Hi Rachita, Thanks very much -- I've been looking forward to this. I'll apply and work with the patch today, and respond as soon as I can. Upon a quick investigation, this looks to be an excellent incremental starting point that we can build upon as we go. Thanks again, Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
