| Message ID | 20250217-restricted-pointers-uprobes-v1-1-e8cbe5bb22a7@linutronix.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | uprobes: Don't use %pK through printk | expand |
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 2ca797cbe465f2d4a596e4a5d0d2d5a45e5cacf9..bf2a87a0a37878e99d0cf715ddedfdc2d1949c5d 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -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);
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. Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/ Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> --- kernel/events/uprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: 0ad2507d5d93f39619fc42372c347d6006b64319 change-id: 20250217-restricted-pointers-uprobes-830c16917cf5 Best regards,