From: Carlos Llamas <cmllamas@google.com>
To: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Arve Hjønnevåg" <arve@android.com>,
"Todd Kjos" <tkjos@android.com>,
"Martijn Coenen" <maco@android.com>,
"Joel Fernandes" <joel@joelfernandes.org>,
"Christian Brauner" <brauner@kernel.org>,
"Carlos Llamas" <cmllamas@google.com>,
"Suren Baghdasaryan" <surenb@google.com>,
"Alice Ryhl" <aliceryhl@google.com>
Cc: linux-kernel@vger.kernel.org, kernel-team@android.com,
"Tiffany Y. Yang" <ynaffit@google.com>,
stable@vger.kernel.org
Subject: [PATCH] binder: fix offset calculation in debug log
Date: Tue, 25 Mar 2025 18:49:00 +0000 [thread overview]
Message-ID: <20250325184902.587138-1-cmllamas@google.com> (raw)
The vma start address should be substracted from the buffer's user data
address and not the other way around.
Cc: Tiffany Y. Yang <ynaffit@google.com>
Cc: stable@vger.kernel.org
Fixes: 162c79731448 ("binder: avoid user addresses in debug logs")
Signed-off-by: Carlos Llamas <cmllamas@google.com>
---
drivers/android/binder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 76052006bd87..5fc2c8ee61b1 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -6373,7 +6373,7 @@ static void print_binder_transaction_ilocked(struct seq_file *m,
seq_printf(m, " node %d", buffer->target_node->debug_id);
seq_printf(m, " size %zd:%zd offset %lx\n",
buffer->data_size, buffer->offsets_size,
- proc->alloc.vm_start - buffer->user_data);
+ buffer->user_data - proc->alloc.vm_start);
}
static void print_binder_work_ilocked(struct seq_file *m,
--
2.49.0.395.g12beb8f557-goog
next reply other threads:[~2025-03-25 18:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-25 18:49 Carlos Llamas [this message]
2025-03-25 20:25 ` Tiffany Y. Yang
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