5.15-stable review patch. If anyone has any objections, please let me know.
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From: Bart Van Assche bvanassche@acm.org
[ Upstream commit 6287fbad1cd91f0c25cdc3a580499060828a8f30 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- fs/proc/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c index d0414e566d30a..3405005199b61 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)