From: Sven Schnelle svens@stackframe.org
commit f324fa58327791b2696628b31480e7e21c745706 upstream.
When setting the instruction pointer on PA-RISC we also need to set the back of the instruction queue to the new offset, otherwise we will execute on instruction from the new location, and jumping back to the old location stored in iaoq_b.
Signed-off-by: Sven Schnelle svens@stackframe.org Signed-off-by: Helge Deller deller@gmx.de Fixes: 75ebedf1d263 ("parisc: Add HAVE_REGS_AND_STACK_ACCESS_API feature") Cc: stable@vger.kernel.org # 4.19+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/parisc/include/asm/ptrace.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/parisc/include/asm/ptrace.h +++ b/arch/parisc/include/asm/ptrace.h @@ -28,7 +28,8 @@ static inline unsigned long regs_return_ static inline void instruction_pointer_set(struct pt_regs *regs, unsigned long val) { - regs->iaoq[0] = val; + regs->iaoq[0] = val; + regs->iaoq[1] = val + 4; }
/* Query offset/name of register from its name/offset */