[PATCH 6.6 05/26] ARM: 9351/1: fault: Add "cut here" line for prefetch aborts

Greg Kroah-Hartman gregkh at linuxfoundation.org
Thu Apr 3 08:20:26 PDT 2025


6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kees Cook <keescook at chromium.org>

commit 8f09b8b4fa58e99cbfd9a650b31d65cdbd8e4276 upstream.

The common pattern in arm is to emit a "8<--- cut here ---" line for
faults, but it was missing for do_PrefetchAbort(). Add it.

Cc: Wang Kefeng <wangkefeng.wang at huawei.com>
Cc: Ben Hutchings <ben at decadent.org.uk>
Cc: linux-arm-kernel at lists.infradead.org
Acked-by: Ard Biesheuvel <ardb at kernel.org>
Signed-off-by: Kees Cook <keescook at chromium.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 arch/arm/mm/fault.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -563,6 +563,7 @@ do_PrefetchAbort(unsigned long addr, uns
 	if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
 		return;
 
+	pr_alert("8<--- cut here ---\n");
 	pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
 		inf->name, ifsr, addr);
 





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