KVM: s390: Don't use %pK through debug printing or tracepoints

[PATCH 0/2] KVM: s390: Don't use %pK through debug printing or tracepoints

Thomas Weißschuh posted 2 patches 10 months ago

Download series mbox

arch/s390/kvm/intercept.c  |  2 +-
arch/s390/kvm/interrupt.c  |  8 ++++----
arch/s390/kvm/kvm-s390.c   | 10 +++++-----
arch/s390/kvm/trace-s390.h |  4 ++--
4 files changed, 12 insertions(+), 12 deletions(-)

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[PATCH 0/2] KVM: s390: Don't use %pK through debug printing or tracepoints

Posted by Thomas Weißschuh 10 months ago

Restricted pointers ("%pK") are only meant to be used when directly
printing to a file from task context.
Otherwise it can unintentionally expose security sensitive, raw pointer values.

Use regular pointer formatting instead.

Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
Thomas Weißschuh (2):
      KVM: s390: Don't use %pK through tracepoints
      KVM: s390: Don't use %pK through debug printing

 arch/s390/kvm/intercept.c  |  2 +-
 arch/s390/kvm/interrupt.c  |  8 ++++----
 arch/s390/kvm/kvm-s390.c   | 10 +++++-----
 arch/s390/kvm/trace-s390.h |  4 ++--
 4 files changed, 12 insertions(+), 12 deletions(-)
---
base-commit: 0ad2507d5d93f39619fc42372c347d6006b64319
change-id: 20250217-restricted-pointers-s390-3e93b67a9996

Best regards,
-- 
Thomas Weißschuh <thomas.weissschuh@linutronix.de>

Re: [PATCH 0/2] KVM: s390: Don't use %pK through debug printing or tracepoints

Posted by Janosch Frank 9 months, 3 weeks ago

On 2/17/25 2:13 PM, Thomas Weißschuh wrote:
> Restricted pointers ("%pK") are only meant to be used when directly
> printing to a file from task context.
> Otherwise it can unintentionally expose security sensitive, raw pointer values.
> 
> Use regular pointer formatting instead.


Thanks, picked!