[PATCH 4.14 41/69] parisc: regs_return_value() should return gpr28

From: Greg Kroah-Hartman
Date: Mon Apr 15 2019 - 15:03:14 EST


From: Sven Schnelle <svens@xxxxxxxxxxxxxx>

commit 45efd871bf0a47648f119d1b41467f70484de5bc upstream.

While working on kretprobes for PA-RISC I was wondering while the
kprobes sanity test always fails on kretprobes. This is caused by
returning gpr20 instead of gpr28.

Signed-off-by: Sven Schnelle <svens@xxxxxxxxxxxxxx>
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 4.14+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
arch/parisc/include/asm/ptrace.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/parisc/include/asm/ptrace.h
+++ b/arch/parisc/include/asm/ptrace.h
@@ -22,7 +22,7 @@ unsigned long profile_pc(struct pt_regs

static inline unsigned long regs_return_value(struct pt_regs *regs)
{
- return regs->gr[20];
+ return regs->gr[28];
}

#endif