[Bug libdw/24856] New: dwarf_diename() cannot get correct name

changbin.du at gmail dot com sourceware-bugzilla@sourceware.org
Sat Jul 27 13:40:00 GMT 2019


https://sourceware.org/bugzilla/show_bug.cgi?id=24856

            Bug ID: 24856
           Summary: dwarf_diename() cannot get correct name
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: libdw
          Assignee: unassigned at sourceware dot org
          Reporter: changbin.du at gmail dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

Created attachment 11923
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11923&action=edit
object file

The allfcts get all symbols as the same name.
elfutils/tests$ ./allfcts ../../linux/kernel/iomem.o 
kernel/iomem.c:162:x86_coreid_bits
kernel/iomem.c:139:x86_coreid_bits
kernel/iomem.c:134:x86_coreid_bits
kernel/iomem.c:129:x86_coreid_bits
kernel/iomem.c:122:x86_coreid_bits
kernel/iomem.c:71:x86_coreid_bits
kernel/iomem.c:30:x86_coreid_bits
kernel/iomem.c:16:x86_coreid_bits
./include/linux/mm.h:626:x86_coreid_bits
./include/linux/device.h:1105:x86_coreid_bits
./include/linux/mmzone.h:1297:x86_coreid_bits
./include/linux/mmzone.h:1262:x86_coreid_bits
./include/linux/mmzone.h:1212:x86_coreid_bits
./include/linux/mmzone.h:1151:x86_coreid_bits
./include/linux/page-flags.h:372:x86_coreid_bits
./include/linux/err.h:24:x86_coreid_bits

But dwfl API works:
elfutils/tests$ ./funcretval -e ../../linux/kernel/iomem.o 
() devm_memunmap: returns no value
() devm_memremap: return value location: {0x50, 0}
() devm_memremap_match: return value location: {0x50, 0}
() devm_memremap_release: returns no value
() memunmap: returns no value
() memremap: return value location: {0x50, 0}
() try_ram_remap: return value location: {0x50, 0}
() arch_memremap_wb: return value location: {0x50, 0}
() is_vmalloc_addr: return value location: {0x50, 0}
() dev_to_node: return value location: {0x50, 0}
() pfn_valid: return value location: {0x50, 0}
() valid_section: return value location: {0x50, 0}
() __nr_to_section: return value location: {0x50, 0}
() pfn_to_section_nr: return value location: {0x50, 0}
() PageHighMem: return value location: {0x50, 0}
() ERR_PTR: return value location: {0x50, 0}

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