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* linux/elfcore.h: hide kernel functionsRoland McGrath2010-05-211-2/+2
| | | | | | | | | The declarations for elf_core_extra_phdrs() et al got added on the wrong side of #ifdef __KERNEL__ in linux/elfcore.h so they leak into the user header copy and we get a warning at build time about it. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elf coredump: add extended numbering supportDaisuke HATAYAMA2010-03-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Daisuke 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elf coredump: replace ELF_CORE_EXTRA_* macros by functionsDaisuke HATAYAMA2010-03-061-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | 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: Daisuke 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elfcore.h : Fix UML build breakageParag Warudkar2009-07-081-3/+2
| | | | | | | | | | | | | | | | Commit a65e7bfcd74e4c0939f235d2bf9f48ddb3a57991 broke the UML build with the following error - In file included from fs/proc/kcore.c:17: include/linux/elfcore.h: In function 'elf_core_copy_task_regs': include/linux/elfcore.h:129: error: implicit declaration of function 'task_pt_regs' Fix this by restoring the previous behavior of returning 0 for all arches like UML that don't define task_pt_regs. Signed-off-by: Parag Warudkar <parag.lkml@gmail.com> Acked-by: Amerigo Wang <xiyou.wangcong@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elf: fix multithreaded program core dumping on armHui Zhu2009-07-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Hui 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elf: add ELF_CORE_COPY_KERNEL_REGS()Tejun Heo2009-02-101-0/+9
| | | | | | | | | | | 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: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Unexport asm/elf.hKirill A. Shutemov2008-02-071-0/+2
| | | | | | | | | Do not export asm/elf.h during make headers_install. Signed-off-by: Kirill A. Shutemov <k.shutemov@gmail.com> Reviewed-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Unexport asm/user.h and linux/user.hKirill A. Shutemov2008-02-071-0/+2
| | | | | | | | | | | | Do not export asm/user.h and linux/user.h during make headers_install. Signed-off-by: Kirill A. Shutemov <k.shutemov@gmail.com> Reviewed-by: David Woodhouse <dwmw2@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] FDPIC: Add coredump capability for the ELF-FDPIC binfmtDavid Howells2006-07-101-0/+10
| | | | | | | | Add coredump capability for the ELF-FDPIC binfmt. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Compilation of kexec/kdump brokenFernando Luis Vazquez Cao2006-02-031-0/+1
| | | | | | | | | The compilation of kexec/kdump seems to be broken for x86_64. Remove the dependency of kexec on CONFIG_IA32_EMULATION. Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+129
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!