From: Todd Kjos <tkjos@android.com>
To: tkjos@google.com, gregkh@linuxfoundation.org, arve@android.com,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
maco@google.com
Subject: [PATCH] binder: replace "%p" with "%pK"
Date: Wed, 7 Feb 2018 13:57:37 -0800 [thread overview]
Message-ID: <20180207215737.251082-1-tkjos@google.com> (raw)
The format specifier "%p" can leak kernel addresses. Use
"%pK" instead. There were 4 remaining cases in binder.c.
Signed-off-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
---
drivers/android/binder.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 37289683939c..7da09b10dae8 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2141,7 +2141,7 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
int debug_id = buffer->debug_id;
binder_debug(BINDER_DEBUG_TRANSACTION,
- "%d buffer release %d, size %zd-%zd, failed at %p\n",
+ "%d buffer release %d, size %zd-%zd, failed at %pK\n",
proc->pid, buffer->debug_id,
buffer->data_size, buffer->offsets_size, failed_at);
@@ -3653,7 +3653,7 @@ static int binder_thread_write(struct binder_proc *proc,
}
}
binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "%d:%d BC_DEAD_BINDER_DONE %016llx found %p\n",
+ "%d:%d BC_DEAD_BINDER_DONE %016llx found %pK\n",
proc->pid, thread->pid, (u64)cookie,
death);
if (death == NULL) {
@@ -4968,7 +4968,7 @@ static void print_binder_transaction_ilocked(struct seq_file *m,
spin_lock(&t->lock);
to_proc = t->to_proc;
seq_printf(m,
- "%s %d: %p from %d:%d to %d:%d code %x flags %x pri %ld r%d",
+ "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %ld r%d",
prefix, t->debug_id, t,
t->from ? t->from->proc->pid : 0,
t->from ? t->from->pid : 0,
@@ -4992,7 +4992,7 @@ static void print_binder_transaction_ilocked(struct seq_file *m,
}
if (buffer->target_node)
seq_printf(m, " node %d", buffer->target_node->debug_id);
- seq_printf(m, " size %zd:%zd data %p\n",
+ seq_printf(m, " size %zd:%zd data %pK\n",
buffer->data_size, buffer->offsets_size,
buffer->data);
}
--
2.16.0.rc1.238.g530d649a79-goog
next reply other threads:[~2018-02-07 21:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-07 21:57 Todd Kjos [this message]
2018-02-07 22:56 ` [PATCH] binder: replace "%p" with "%pK" Greg KH
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