Commit 6287fbad authored Mar 19, 2025 by Bart Van Assche Committed by Andrew Morton Mar 21, 2025

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: b2f73922 ("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>

parent 81ca2970

fs/proc/base.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)