Commit ec5fd50a authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Ingo Molnar
Browse files

uprobes: Don't use %pK through printk 

Restricted pointers ("%pK") are not meant to be used through printk().
It can unintentionally expose security sensitive, raw pointer values.

Use regular pointer formatting instead.

For more background, see:

  https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/



Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250217-restricted-pointers-uprobes-v1-1-e8cbe5bb22a7@linutronix.de
parent 2408a807

kernel/events/uprobes.c

+1 −1
Original line number Diff line number Diff line
@@ -417,7 +417,7 @@ static void update_ref_ctr_warn(struct uprobe *uprobe, 
				struct mm_struct *mm, short d)

{

	pr_warn("ref_ctr %s failed for inode: 0x%lx offset: "

		"0x%llx ref_ctr_offset: 0x%llx of mm: 0x%pK\n",

		"0x%llx ref_ctr_offset: 0x%llx of mm: 0x%p\n",

		d > 0 ? "increment" : "decrement", uprobe->inode->i_ino,

		(unsigned long long) uprobe->offset,

		(unsigned long long) uprobe->ref_ctr_offset, mm);