From: Anubhav Shelat <ashelat@redhat.com>
To: peterz@infradead.org, mingo@redhat.com, mhiramat@kernel.org,
rostedt@goodmis.org, acme@kernel.org, namhyung@kernel.org
Cc: mathieu.desnoyers@efficios.com, mark.rutland@arm.com,
alexander.shishkin@linux.intel.com, jolsa@kernel.org,
irogers@google.com, adrian.hunter@intel.com,
james.clark@linaro.org, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org,
Anubhav Shelat <ashelat@redhat.com>
Subject: [PATCH v3 3/3] tracefs: make root directory world-traversable
Date: Thu, 23 Apr 2026 11:17:46 -0400 [thread overview]
Message-ID: <20260423151746.16258-4-ashelat@redhat.com> (raw)
In-Reply-To: <20260423151746.16258-1-ashelat@redhat.com>
Change the default tracefs mount mode from 0700 to 0755. This allows
unprivileged users to access the eventfs directories underneath which
already use 0755.
This does not expose any tracing data since access to the files
themselves is controlled by individual permissions.
Signed-off-by: Anubhav Shelat <ashelat@redhat.com>
---
fs/tracefs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
index 03f768536fd5..9506450fbc91 100644
--- a/fs/tracefs/inode.c
+++ b/fs/tracefs/inode.c
@@ -23,7 +23,7 @@
#include <linux/slab.h>
#include "internal.h"
-#define TRACEFS_DEFAULT_MODE 0700
+#define TRACEFS_DEFAULT_MODE 0755
static struct kmem_cache *tracefs_inode_cachep __ro_after_init;
static struct vfsmount *tracefs_mount;
--
2.53.0
prev parent reply other threads:[~2026-04-23 15:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-23 15:17 [PATCH v3 0/3] Enable perf tracing for unprivileged users Anubhav Shelat
2026-04-23 15:17 ` [PATCH v3 1/3] perf evsel: don't set PERF_SAMPLE_IP for unprivileged tracepoints Anubhav Shelat
2026-04-23 15:17 ` [PATCH v3 2/3] perf: enable unprivileged syscall tracing with perf trace Anubhav Shelat
2026-04-23 15:17 ` Anubhav Shelat [this message]
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