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    Subject[PATCH 4.19 230/280] powerpc/traps: Fix the message printed when stack overflows
    Date
    4.19-stable review patch.  If anyone has any objections, please let me know.

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

    From: Christophe Leroy <christophe.leroy@c-s.fr>

    commit 9bf3d3c4e4fd82c7174f4856df372ab2a71005b9 upstream.

    Today's message is useless:

    [ 42.253267] Kernel stack overflow in process (ptrval), r1=c65500b0

    This patch fixes it:

    [ 66.905235] Kernel stack overflow in process sh[356], r1=c65560b0

    Fixes: ad67b74d2469 ("printk: hash addresses printed with %p")
    Cc: stable@vger.kernel.org # v4.15+
    Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
    [mpe: Use task_pid_nr()]
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/powerpc/kernel/traps.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/arch/powerpc/kernel/traps.c
    +++ b/arch/powerpc/kernel/traps.c
    @@ -1545,8 +1545,8 @@ bail:

    void StackOverflow(struct pt_regs *regs)
    {
    - printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n",
    - current, regs->gpr[1]);
    + pr_crit("Kernel stack overflow in process %s[%d], r1=%lx\n",
    + current->comm, task_pid_nr(current), regs->gpr[1]);
    debugger(regs);
    show_regs(regs);
    panic("kernel stack overflow");

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