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    Subject[PATCH 4.8 37/45] sparc32: Fix inverted invalid_frame_pointer checks on sigreturns
    Date
    4.8-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Andreas Larsson <andreas@gaisler.com>


    [ Upstream commit 07b5ab3f71d318e52c18cc3b73c1d44c908aacfa ]

    Signed-off-by: Andreas Larsson <andreas@gaisler.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    arch/sparc/kernel/signal_32.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/arch/sparc/kernel/signal_32.c
    +++ b/arch/sparc/kernel/signal_32.c
    @@ -89,7 +89,7 @@ asmlinkage void do_sigreturn(struct pt_r
    sf = (struct signal_frame __user *) regs->u_regs[UREG_FP];

    /* 1. Make sure we are not getting garbage from the user */
    - if (!invalid_frame_pointer(sf, sizeof(*sf)))
    + if (invalid_frame_pointer(sf, sizeof(*sf)))
    goto segv_and_exit;

    if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
    @@ -150,7 +150,7 @@ asmlinkage void do_rt_sigreturn(struct p

    synchronize_user_stack();
    sf = (struct rt_signal_frame __user *) regs->u_regs[UREG_FP];
    - if (!invalid_frame_pointer(sf, sizeof(*sf)))
    + if (invalid_frame_pointer(sf, sizeof(*sf)))
    goto segv;

    if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))

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