From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 19 Mar 2025 21:02:22 +0000 (-0700)
Subject: fs/procfs: fix the comment above proc_pid_wchan()
X-Git-Tag: v6.15-rc1~80^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6287fbad1cd91f0c25cdc3a580499060828a8f30;p=thirdparty%2Fkernel%2Flinux.git

fs/procfs: fix the comment above proc_pid_wchan()

proc_pid_wchan() used to report kernel addresses to user space but that is
no longer the case today.  Bring the comment above proc_pid_wchan() in
sync with the implementation.

Link: https://lkml.kernel.org/r/20250319210222.1518771-1-bvanassche@acm.org
Fixes: b2f73922d119 ("fs/proc, core/debug: Don't expose absolute kernel addresses via wchan")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Kees Cook <kees@kernel.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/proc/base.c b/fs/proc/base.c
index cd89e956c3224..7feb8f41aa253 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -416,7 +416,7 @@ static const struct file_operations proc_pid_cmdline_ops = {
 #ifdef CONFIG_KALLSYMS
 /*
  * Provides a wchan file via kallsyms in a proper one-value-per-file format.
- * Returns the resolved symbol.  If that fails, simply return the address.
+ * Returns the resolved symbol to user space.
  */
 static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
 			  struct pid *pid, struct task_struct *task)