On Tue, Aug 14, 2007 at 09:17:02PM +0000, Alberto Pires de Oliveira Neto wrote:
> 6c4a3a48: [<60026555>] hard_handler+0x15/0x18
> 6c4a3b08: [<60094397>] elf_core_dump+0x1ed/0x25e
There are two problems here.
First, some process is dumping core, and you might want to figure out
what it is.
Second, UML/x86_64 doesn't react well to a process trying to dump
core. The patch below fixes it, but is somewhat incomplete.
Jeff
--
Work email - jdike at linux dot intel dot com
Index: linux-2.6.22/arch/um/sys-x86_64/ptrace.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/ptrace.c 2007-08-09
14:07:41.000000000 -0400
+++ linux-2.6.22/arch/um/sys-x86_64/ptrace.c 2007-08-09 16:18:06.000000000
-0400
@@ -158,8 +158,8 @@ int is_syscall(unsigned long addr)
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
{
- panic("dump_fpu");
- return(1);
+ memset(fpu, 0, sizeof(*fpu));
+ return 1;
}
int get_fpregs(unsigned long buf, struct task_struct *child)
Index: linux-2.6.22/include/asm-um/elf-x86_64.h
===================================================================
--- linux-2.6.22.orig/include/asm-um/elf-x86_64.h 2007-08-09
14:07:41.000000000 -0400
+++ linux-2.6.22/include/asm-um/elf-x86_64.h 2007-08-09 16:18:27.000000000
-0400
@@ -64,6 +64,35 @@ typedef struct { } elf_fpregset_t;
PT_REGS_R15(regs) = 0; \
} while (0)
+#define ELF_CORE_COPY_REGS(pr_reg, regs) \
+ (pr_reg)[0] = (regs)->regs.gp[0]; \
+ (pr_reg)[1] = (regs)->regs.gp[1]; \
+ (pr_reg)[2] = (regs)->regs.gp[2]; \
+ (pr_reg)[3] = (regs)->regs.gp[3]; \
+ (pr_reg)[4] = (regs)->regs.gp[4]; \
+ (pr_reg)[5] = (regs)->regs.gp[5]; \
+ (pr_reg)[6] = (regs)->regs.gp[6]; \
+ (pr_reg)[7] = (regs)->regs.gp[7]; \
+ (pr_reg)[8] = (regs)->regs.gp[8]; \
+ (pr_reg)[9] = (regs)->regs.gp[9]; \
+ (pr_reg)[10] = (regs)->regs.gp[10]; \
+ (pr_reg)[11] = (regs)->regs.gp[11]; \
+ (pr_reg)[12] = (regs)->regs.gp[12]; \
+ (pr_reg)[13] = (regs)->regs.gp[13]; \
+ (pr_reg)[14] = (regs)->regs.gp[14]; \
+ (pr_reg)[15] = (regs)->regs.gp[15]; \
+ (pr_reg)[16] = (regs)->regs.gp[16]; \
+ (pr_reg)[17] = (regs)->regs.gp[17]; \
+ (pr_reg)[18] = (regs)->regs.gp[18]; \
+ (pr_reg)[19] = (regs)->regs.gp[19]; \
+ (pr_reg)[20] = (regs)->regs.gp[20]; \
+ (pr_reg)[21] = current->thread.arch.fs; \
+ (pr_reg)[22] = 0; \
+ (pr_reg)[23] = 0; \
+ (pr_reg)[24] = 0; \
+ (pr_reg)[25] = 0; \
+ (pr_reg)[26] = 0;
+
#ifdef TIF_IA32 /* XXX */
#error XXX, indeed
clear_thread_flag(TIF_IA32);
-------------------------------------------------------------------------
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