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fs/procfs: fix the comment above proc_pid_wchan()

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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: b2f73922d1 ("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>
This commit is contained in:
Bart Van Assche 2025-03-19 14:02:22 -07:00 • committed by Andrew Morton
parent 81ca2970b7
commit 6287fbad1c
1 changed files with 1 additions and 1 deletions
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2
fs/proc/base.c
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@ -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)