Bug 434718 - user_regset: 32-on-64: core files broken
user_regset: 32-on-64: core files broken
Status: CLOSED UPSTREAM
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
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x86_64 Linux
low Severity low
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Assigned To: Roland McGrath
Fedora Extras Quality Assurance
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2008-02-24 17:54 EST by Jan Kratochvil
Modified: 2008-02-26 16:22 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Environment:
Last Closed: 2008-02-26 16:22:23 EST
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RHEL 7.3 requirements from Atomic Host:


Attachments (Terms of Use)
Broken core file (gzipped) (75.09 KB, application/octet-stream)
2008-02-24 17:57 EST, Jan Kratochvil
no flags Details
Correct core file (gzipped) - from kernel-2.6.23.14-107.fc8.x86_64 (74.96 KB, application/octet-stream)
2008-02-24 17:58 EST, Jan Kratochvil
no flags Details

  None (edit)
Description Jan Kratochvil 2008-02-24 17:54:58 EST
Description of problem:
32-bit processes kernel-produced core files on x86_64 kernel are broken.
At least the whole PRPSINFO does not get parsed.

Version-Release number of selected component (if applicable):
kernel-2.6.25-0.65.rc2.git7.fc9.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. ulimit -c unlimited;runtest --target_board=unix/-m32 gdb.base/auxv.exp

Actual results:
FAIL: gdb.base/auxv.exp: load core file for info auxv on native core dump
FAIL: gdb.base/auxv.exp: matching auxv data from live and core

Expected results:
FAIL: gdb.base/auxv.exp: matching auxv data from live and core

Additional info:
OK - kernel-2.6.23.14-107.fc8.x86_64 (Fedora 8)
Note segment of 1132 bytes at offset 0x254:
  Owner          Data size  Type
  CORE                 144  PRSTATUS
    info.si_signo: 6, info.si_code: 0, info.si_errno: 0, cursig: 6
    sigpend: 00000000000000000000000000000000
    sighold: 00000000000000000000000000000000
    pid: 1479, ppid: 1476, pgrp: 1479, sid: 1476
    utime: 0.000000, stime: 0.000000, cutime: 0.000000, cstime: 0.000000
    orig_eax: 270, fpvalid: 1
    ebx:           1479  ecx:           1479  edx:              6
    esi:       -4671556  edi:        5545972  ebp:     0xffb8b704
    eax:              0  eip:     0xffffe410  eflags:  0x00000296
    esp:     0xffb8b704
    ds: 0x002b  es: 0x002b  fs: 0x0000  gs: 0x0063  cs: 0x0023  ss: 0x002b
  CORE                 124  PRPSINFO
    state: 0, sname: R, zomb: 0, nice: 0, flag: 0x00402600
    uid: 502, gid: 502, pid: 1479, ppid: 1476, pgrp: 1479, sid: 1476
    fname: auxv, psargs:
/home/jkratoch/redhat/fedora/gdb/devel-biarch/gdb-6.7.1/build-x86_64-redhat-lin
  CORE                 144  AUXV
    SYSINFO: 0xffffe400
    SYSINFO_EHDR: 0xffffe000
    HWCAP: 0xbfebfbff  <fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe>
    PAGESZ: 4096
    CLKTCK: 100
    PHDR: 0x8048034
    PHENT: 32
    PHNUM: 8
    BASE: 0
    FLAGS: 0
    ENTRY: 0x8048320
    UID: 502
    EUID: 502
    GID: 502
    EGID: 502
    SECURE: 0
    PLATFORM: 0xffb8bacb
    NULL
  CORE                 108  FPREGSET
    st0: 0x00000000000000000000  st1: 0x00000000000000000000
    st2: 0x00000000000000000000  st3: 0x00000000000000000000
    st4: 0x00000000000000000000  st5: 0x00000000000000000000
    st6: 0x00000000000000000000  st7: 0x00000000000000000000
    fctrl: 0x037f  fstat: 0xffff
  LINUX                512  PRXFPREG


BAD - kernel-2.6.25-0.65.rc2.git7.fc9.x86_64
Note segment of 544 bytes at offset 0x254:
  Owner          Data size  Type
  CORE                 144  PRSTATUS
    info.si_signo: 6, info.si_code: 0, info.si_errno: 0, cursig: 6
    sigpend: 00000000000000000000000000000000
    sighold: 00000000000000000000000000000000
    pid: 2141, ppid: 2138, pgrp: 2141, sid: 2138
    utime: 0.006998, stime: 0.021996, cutime: 0.000000, cstime: 0.000000
    orig_eax: 270, fpvalid: 0
    ebx:           2141  ecx:           2141  edx:              6
    esi:       -6029316  edi:        5545972  ebp:     0xffa3ff44
    eax:              0  eip:     0x00110430  eflags:  0x00000296
    esp:     0xffa3ff44
    ds: 0x002b  es: 0x002b  fs: 0x0000  gs: 0x0063  cs: 0x0023  ss: 0x002b
  CORE                 128  PRPSINFO
  CORE                 144  AUXV
    SYSINFO: 0x110420
    SYSINFO_EHDR: 0x110000
    HWCAP: 0x78bfbfd  <fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2>
    PAGESZ: 4096
    CLKTCK: 100
    PHDR: 0x8048034
    PHENT: 32
    PHNUM: 8
    BASE: 0
    FLAGS: 0
    ENTRY: 0x8048320
    UID: 502
    EUID: 502
    GID: 502
    EGID: 502
    SECURE: 0
    PLATFORM: 0xffa4030b
    NULL
  LINUX                 48  <unknown>: 512
Comment 1 Jan Kratochvil 2008-02-24 17:57:18 EST
Created attachment 295751 [details]
Broken core file (gzipped)
Comment 2 Jan Kratochvil 2008-02-24 17:58:13 EST
Created attachment 295752 [details]
Correct core file (gzipped) - from kernel-2.6.23.14-107.fc8.x86_64
Comment 3 Roland McGrath 2008-02-26 16:22:23 EST
Fix sent upstream, should get into 2.6.25 and rawhide RSN.

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