lkml.org 
[lkml]   [2019]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.0 064/117] parisc: also set iaoq_b in instruction_pointer_set()
    Date
    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 */

    \
     
     \ /
      Last update: 2019-04-15 21:17    [W:4.328 / U:0.072 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site