From: Ryosuke Yasuoka Date: Wed, 24 Dec 2025 07:07:32 +0000 (+0900) Subject: x86/traps: Print unhashed pointers on stack overflow X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b32c93560cb194e10279bd3be3c1d0fa30df3e7;p=thirdparty%2Fkernel%2Flinux.git x86/traps: Print unhashed pointers on stack overflow When a stack overflow occurs, the kernel prints hashed fault address and the stack range using %p. The actual addresses are required for debugging and hashed pointers provide no useful information in this context. Use %px to print the unhashed, raw addresses. Signed-off-by: Ryosuke Yasuoka Signed-off-by: Borislav Petkov (AMD) Link: https://patch.msgid.link/20251224070735.454816-1-ryasuoka@redhat.com --- diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index bcf1dedc1d008..5a6a772e0a6c6 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -549,7 +549,7 @@ __visible void __noreturn handle_stack_overflow(struct pt_regs *regs, { const char *name = stack_type_name(info->type); - printk(KERN_EMERG "BUG: %s stack guard page was hit at %p (stack is %p..%p)\n", + printk(KERN_EMERG "BUG: %s stack guard page was hit at %px (stack is %px..%px)\n", name, (void *)fault_address, info->begin, info->end); die("stack guard page", regs, 0);