Others may run into this too, so I'm mentioning this.
PTRACE_GETEVENTMSG writes a long into the user address space, this has
to be made an int for compat tasks. If you get this wrong a lot of
debugging things will break, as GDB currently makes extensive use of
this facility these days.
It might be nice to try and consolidate this into a single location,
but I frankly think that's overkill and doing it in the per-arch
ptrace() syscall handler is just the easiest thing to do right now.
diff-tree acdb28098a91c930909c257da1c0837b875a11fb (from
c5959ae91b2e6e93000c58d428f91c5b5b46868d)
Author: David S. Miller <[EMAIL PROTECTED]>
Date: Tue Apr 4 16:54:40 2006 -0700
[SPARC64]: Translate PTRACE_GETEVENTMSG for 32-bit tasks.
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index c910af5..49e6ded 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -609,6 +609,22 @@ #endif
/* PTRACE_DUMPCORE unsupported... */
+ case PTRACE_GETEVENTMSG: {
+ int err;
+
+ if (test_thread_flag(TIF_32BIT))
+ err = put_user(child->ptrace_message,
+ (unsigned int __user *) data);
+ else
+ err = put_user(child->ptrace_message,
+ (unsigned long __user *) data);
+ if (err)
+ pt_error_return(regs, -err);
+ else
+ pt_succ_return(regs, 0);
+ break;
+ }
+
default: {
int err = ptrace_request(child, request, addr, data);
if (err)
-
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