1. 21 May, 2010 1 commit
  2. 06 Mar, 2010 2 commits
    • Daisuke HATAYAMA's avatar
      elf coredump: add extended numbering support · 8d9032bb
      Daisuke HATAYAMA authored
      The current ELF dumper implementation can produce broken corefiles if
      program headers exceed 65535.  This number is determined by the number of
      vmas which the process have.  In particular, some extreme programs may use
      more than 65535 vmas.  (If you google max_map_count, you can find some
      users facing this problem.) This kind of program never be able to generate
      correct coredumps.
      
      This patch implements ``extended numbering'' that uses sh_info field of
      the first section header instead of e_phnum field in order to represent
      upto 4294967295 vmas.
      
      This is supported by
      AMD64-ABI(http://www.x86-64.org/documentation.html) and
      Solaris(http://docs.sun.com/app/docs/doc/817-1984/).
      Of course, we are preparing patches for gdb and binutils.
      Signed-off-by: default avatarDaisuke HATAYAMA <d.hatayama@jp.fujitsu.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Greg Ungerer <gerg@snapgear.com>
      Cc: Roland McGrath <roland@redhat.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8d9032bb
    • Daisuke HATAYAMA's avatar
      elf coredump: replace ELF_CORE_EXTRA_* macros by functions · 1fcccbac
      Daisuke HATAYAMA authored
      elf_core_dump() and elf_fdpic_core_dump() use #ifdef and the corresponding
      macro for hiding _multiline_ logics in functions.  This patch removes
      #ifdef and replaces ELF_CORE_EXTRA_* by corresponding functions.  For
      architectures not implemeonting ELF_CORE_EXTRA_*, we use weak functions in
      order to reduce a range of modification.
      
      This cleanup is for my next patches, but I think this cleanup itself is
      worth doing regardless of my firnal purpose.
      Signed-off-by: default avatarDaisuke HATAYAMA <d.hatayama@jp.fujitsu.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Greg Ungerer <gerg@snapgear.com>
      Cc: Roland McGrath <roland@redhat.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1fcccbac
  3. 08 Jul, 2009 1 commit
  4. 06 Jul, 2009 1 commit
    • Hui Zhu's avatar
      elf: fix multithreaded program core dumping on arm · a65e7bfc
      Hui Zhu authored
      Fix the multithread program core thread message error.
      
      This issue affects arches with neither has CORE_DUMP_USE_REGSET nor
      ELF_CORE_COPY_TASK_REGS, ARM is one of them.
      
      The thread message of core file is generated in elf_dump_thread_status.
      The register values is set by elf_core_copy_task_regs in this function.
      
      If an arch doesn't define ELF_CORE_COPY_TASK_REGS,
      elf_core_copy_task_regs() will do nothing.  Then the core file will not
      have the register message of thread.
      
      So add elf_core_copy_regs to set regiser values if ELF_CORE_COPY_TASK_REGS
      doesn't define.
      
      The following is how to reproduce this issue:
      
      cat 1.c
      #include <stdio.h>
      #include <pthread.h>
      #include <assert.h>
      
      void td1(void * i)
      {
             while (1)
             {
                     printf ("1\n");
                     sleep (1);
             }
      
             return;
      }
      
      void td2(void * i)
      {
             while (1)
             {
                     printf ("2\n");
                     sleep (1);
             }
      
             return;
      }
      
      int
      main(int argc,char *argv[],char *envp[])
      {
             pthread_t       t1,t2;
      
             pthread_create(&t1, NULL, (void*)td1, NULL);
             pthread_create(&t2, NULL, (void*)td2, NULL);
      
             sleep (10);
      
             assert(0);
      
             return (0);
      }
      arm-xxx-gcc -g -lpthread 1.c -o 1
      copy 1.c and 1 to a arm board.
      Goto this board.
      ulimit -c 1800000
      ./1
      # ./1
      1
      2
      1
      ...
      ...
      1
      1: 1.c:37: main: Assertion `0' failed.
      Aborted (core dumped)
      Then you can get a core file.
      gdb 1 core.xxx
      Without the patch:
      (gdb) info threads
       3 process 909  0x00000000 in ?? ()
       2 process 908  0x00000000 in ?? ()
      * 1 process 907  0x4a6e2238 in raise () from /lib/libc.so.6
      You can found that the pc of 909 and 908 is 0x00000000.
      With the patch:
      (gdb) info threads
       3 process 885  0x4a749974 in nanosleep () from /lib/libc.so.6
       2 process 884  0x4a749974 in nanosleep () from /lib/libc.so.6
      * 1 process 883  0x4a6e2238 in raise () from /lib/libc.so.6
      The pc of 885 and 884 is right.
      Signed-off-by: default avatarHui Zhu <teawater@gmail.com>
      Cc: Amerigo Wang <xiyou.wangcong@gmail.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Roland McGrath <roland@redhat.com>
      Cc: Jakub Jelinek <jakub@redhat.com>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a65e7bfc
  5. 09 Feb, 2009 1 commit
    • Tejun Heo's avatar
      elf: add ELF_CORE_COPY_KERNEL_REGS() · 6cd61c0b
      Tejun Heo authored
      ELF core dump is used for both user land core dump and kernel crash
      dump.  Depending on architecture, register might need to be accessed
      differently for userland and kernel.  Allow architectures to define
      ELF_CORE_COPY_KERNEL_REGS() and use different operation for kernel
      register dump.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      6cd61c0b
  6. 07 Feb, 2008 2 commits
  7. 10 Jul, 2006 1 commit
  8. 03 Feb, 2006 1 commit
  9. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4