On Mon, Dec 05, 2016 at 01:39:53PM +0530, Maninder Singh wrote:
> This patch corrects format specifier for printing 64 bit addresses.
>
> Signed-off-by: Maninder Singh <maninder1.s@xxxxxxxxxxx>
> Signed-off-by: Vaneet Narang <v.narang@xxxxxxxxxxx>
> ---
> arch/arm64/kernel/signal.c | 2 +-
> arch/arm64/kvm/sys_regs.c | 8 ++++++--
> arch/arm64/mm/fault.c | 15 ++++++++++-----
> arch/arm64/mm/mmu.c | 4 ++--
> 4 files changed, 19 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
> index c7b6de6..c89d5fd 100644
> --- a/arch/arm64/kernel/signal.c
> +++ b/arch/arm64/kernel/signal.c
> @@ -155,7 +155,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
>
> badframe:
> if (show_unhandled_signals)
> - pr_info_ratelimited("%s[%d]: bad frame in %s: pc=%08llx sp=%08llx\n",
> + pr_info_ratelimited("%s[%d]: bad frame in %s: pc=%016llx sp=%016llx\n",
> current->comm, task_pid_nr(current), __func__,
> regs->pc, regs->sp);
> force_sig(SIGSEGV, current);
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 87e7e66..89bf5c1 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -1554,8 +1554,12 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> WARN_ON(1);
> }
>
> - kvm_err("Unsupported guest CP%d access at: %08lx\n",
> - cp, *vcpu_pc(vcpu));
> + if (params->is_32bit)
> + kvm_err("Unsupported guest CP%d access at: %08lx\n",
> + cp, *vcpu_pc(vcpu));
> + else
> + kvm_err("Unsupported guest CP%d access at: %016lx\n",
> + cp, *vcpu_pc(vcpu));
It feels a bit much to me to have an if-statement to differentiate the
number of leading zeros, so if it's important to always have fixed
widths then I would just use %016lx in both cases.
> print_sys_reg_instr(params);
> kvm_inject_undefined(vcpu);
> }
> diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
> index a78a5c4..d96a42a 100644
> --- a/arch/arm64/mm/fault.c
> +++ b/arch/arm64/mm/fault.c
> @@ -77,7 +77,7 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
>
> pr_alert("pgd = %p\n", mm->pgd);
> pgd = pgd_offset(mm, addr);
> - pr_alert("[%08lx] *pgd=%016llx", addr, pgd_val(*pgd));
> + pr_alert("[%016lx] *pgd=%016llx", addr, pgd_val(*pgd));
>
> do {
> pud_t *pud;
> @@ -177,7 +177,7 @@ static void __do_kernel_fault(struct mm_struct *mm, unsigned long addr,
> * No handler, we'll have to terminate things with extreme prejudice.
> */
> bust_spinlocks(1);
> - pr_alert("Unable to handle kernel %s at virtual address %08lx\n",
> + pr_alert("Unable to handle kernel %s at virtual address %016lx\n",
> (addr < PAGE_SIZE) ? "NULL pointer dereference" :
> "paging request", addr);
>
> @@ -198,9 +198,14 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr,
> struct siginfo si;
>
> if (unhandled_signal(tsk, sig) && show_unhandled_signals_ratelimited()) {
> - pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n",
> - tsk->comm, task_pid_nr(tsk), fault_name(esr), sig,
> - addr, esr);
> + if (compat_user_mode(regs))
> + pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n",
> + tsk->comm, task_pid_nr(tsk), fault_name(esr), sig,
> + addr, esr);
> + else
> + pr_info("%s[%d]: unhandled %s (%d) at 0x%016lx, esr 0x%03x\n",
> + tsk->comm, task_pid_nr(tsk), fault_name(esr), sig,
> + addr, esr);
same here.
Thanks,
-Christoffer
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