Thread (24 messages) 24 messages, 8 authors, 2023-02-02

Re: [PATCH 8/9] leaking_addresses: also skip canonical ftrace path

flat view

From: Tycho Andersen <tycho@tycho.pizza>
Date: 2023-01-30 19:34:27
Also in: linux-hardening, lkml

On Mon, Jan 30, 2023 at 11:19:14AM -0700, Ross Zwisler wrote:
quoted hunk ↗ jump to hunk
The canonical location for the tracefs filesystem is at /sys/kernel/tracing.

But, from Documentation/trace/ftrace.rst:

  Before 4.1, all ftrace tracing control files were within the debugfs
  file system, which is typically located at /sys/kernel/debug/tracing.
  For backward compatibility, when mounting the debugfs file system,
  the tracefs file system will be automatically mounted at:

  /sys/kernel/debug/tracing

scripts/leaking_addresses.pl only skipped this older debugfs path, so
let's add the canonical path as well.

Signed-off-by: Ross Zwisler <redacted>
---
 scripts/leaking_addresses.pl | 1 +
 1 file changed, 1 insertion(+)
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
index 8f636a23bc3f..e695634d153d 100755
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -61,6 +61,7 @@ my @skip_abs = (
 	'/proc/device-tree',
 	'/proc/1/syscall',
 	'/sys/firmware/devicetree',
+	'/sys/kernel/tracing/trace_pipe',
 	'/sys/kernel/debug/tracing/trace_pipe',
 	'/sys/kernel/security/apparmor/revision');
Thanks.

Acked-by: Tycho Andersen <tycho@tycho.pizza>
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help