Re: what is the right behavior of copy_to_user(0x0, ..., ...)?

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On Tue, May 07, 2002 at 10:47:56AM +0200, Carsten Langgaard wrote:

> I have fixed it locally by removing the SW from the delay-slot, but obviously
> your fix is the right one.
> But I guess we need the same fix in arch/mips/kernel/unaligned.c.

Smoke this:

Index: arch/mips64/kernel/unaligned.c
===================================================================
RCS file: /home/pub/cvs/linux/arch/mips64/kernel/unaligned.c,v
retrieving revision 1.6.2.3
diff -u -r1.6.2.3 unaligned.c
--- arch/mips64/kernel/unaligned.c	24 Apr 2002 07:58:54 -0000	1.6.2.3
+++ arch/mips64/kernel/unaligned.c	7 May 2002 10:29:05 -0000
@@ -351,7 +351,7 @@
 
 fault:
 	/* Did we have an exception handler installed? */
-	fixup = search_exception_table(regs->cp0_epc);
+	fixup = search_exception_table(exception_epc(regs));
 	if (fixup) {
 		long new_epc;
 		new_epc = fixup_exception(dpf_reg, fixup, regs->cp0_epc);
Index: arch/mips/kernel/unaligned.c
===================================================================
RCS file: /home/pub/cvs/linux/arch/mips/kernel/unaligned.c,v
retrieving revision 1.15.2.4
diff -u -r1.15.2.4 unaligned.c
--- arch/mips/kernel/unaligned.c	24 Apr 2002 07:50:26 -0000	1.15.2.4
+++ arch/mips/kernel/unaligned.c	7 May 2002 10:29:05 -0000
@@ -332,7 +332,7 @@
 
 fault:
 	/* Did we have an exception handler installed? */
-	fixup = search_exception_table(regs->cp0_epc);
+	fixup = search_exception_table(exception_epc(regs));
 	if (fixup) {
 		long new_epc;
 		new_epc = fixup_exception(dpf_reg, fixup, regs->cp0_epc);

  Ralf

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