Bug 90607
| Summary: | bad Elf32_Phdr.p_filesz for PT_DYNAMIC | ||||||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | John Reiser <jreiser> | ||||||||
| Component: | binutils | Assignee: | Jakub Jelinek <jakub> | ||||||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |||||||||
| Severity: | medium | Docs Contact: | |||||||||
| Priority: | medium | ||||||||||
| Version: | 9 | ||||||||||
| Target Milestone: | --- | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | i386 | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2004-10-07 14:06:56 UTC | Type: | --- | ||||||||
| Regression: | --- | Mount Type: | --- | ||||||||
| Documentation: | --- | CRM: | |||||||||
| Verified Versions: | Category: | --- | |||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||
| Embargoed: | |||||||||||
| Attachments: |
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Created attachment 91599 [details]
assembly-language test case
generates small .text, .data, and .dynamic sections
Created attachment 91600 [details]
loader script which triggers the bug
Created attachment 91601 [details]
Makefile containing commands which generate bad PT_DYNAMIC
Seems to work just fine with binutils-2.15.91.0.2-8 (although you should never create linker generated sections yourself in the assembly). |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 Description of problem: ld generates incorrect output for PT_DYNAMIC in some cases. After using the attached bug.S source file and bug.lts loader script and Makefile, then readelf of the loaded output reports ----- Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align DYNAMIC 0x000000 0x008000b8 0x008000b8 0x00000 0x00010 R 0x4 LOAD 0x000000 0x00800000 0x00800000 0x000a2 0x000a2 RWE 0x1000 LOAD 0x0000a4 0x008000a4 0x008000a4 0x00014 0x00014 RW 0x1000 Section to Segment mapping: Segment Sections... 00 01 .text 02 .data ----- which has a bad FileSiz for PT_DYNAMIC (0 instead of 0x10) and a missing .dynamic section in the list for Segment 02. Version-Release number of selected component (if applicable): binutils-2.13.90.0.18-9 How reproducible: Always Steps to Reproduce: 1. Get attached files bug.S, bug.lds, Makefile. 2. Run 'make'. 3. Inspect output of readelf for PT_DYNAMIC.FileSize, and missing placement of .dynamic section in Segment mapping. Actual Results: There are 8 section headers, starting at offset 0x100: Section Headers: [Nr] Name Type Addr Off Size ES Flg Lk Inf Al [ 0] NULL 00000000 000000 000000 00 0 0 0 [ 1] .text PROGBITS 00800094 000094 00000e 00 AX 0 0 4 [ 2] .data PROGBITS 008000a4 0000a4 000014 00 WA 0 0 4 [ 3] .bss NOBITS 008000b8 0000b8 000000 00 WA 0 0 4 [ 4] .dynamic DYNAMIC 008000b8 0000b8 000010 08 0 0 4 [ 5] .shstrtab STRTAB 00000000 0000c8 000035 00 0 0 1 [ 6] .symtab SYMTAB 00000000 000240 000140 10 7 d 4 [ 7] .strtab STRTAB 00000000 000380 000066 00 0 0 1 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings) I (info), L (link order), G (group), x (unknown) O (extra OS processing required) o (OS specific), p (processor specific) Elf file type is EXEC (Executable file) Entry point 0x800094 There are 3 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align DYNAMIC 0x000000 0x008000b8 0x008000b8 0x00000 0x00010 R 0x4 LOAD 0x000000 0x00800000 0x00800000 0x000a2 0x000a2 RWE 0x1000 LOAD 0x0000a4 0x008000a4 0x008000a4 0x00014 0x00014 RW 0x1000 Section to Segment mapping: Segment Sections... 00 01 .text 02 .data Expected Results: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align DYNAMIC 0x000000 0x008000b8 0x008000b8 0x00010 0x00010 R 0x4 ## ^^^^^^^ Section to Segment mapping: Segment Sections... 00 01 .text 02 .data .dynamic ## ^^^^^^^^ Additional info: