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Mon, 22 Jan 2024 17:12:18 -0800 (PST) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id w2-20020a170902c78200b001d71f10aa42sm5968938pla.11.2024.01.22.17.12.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jan 2024 17:12:16 -0800 (PST) From: Kees Cook To: "Russell King (Oracle)" Cc: Kees Cook , Ard Biesheuvel , Wang Kefeng , Ben Hutchings , linux-arm-kernel@lists.infradead.org, Russell King , Hugh Dickins , Andrew Morton , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH] ARM: fault: Add "cut here" line for prefetch aborts Date: Mon, 22 Jan 2024 17:12:15 -0800 Message-Id: <20240123011211.work.227-kees@kernel.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=935; i=keescook@chromium.org; h=from:subject:message-id; bh=ZCXYUvRq5QkiujopZKa+oos+1nywJjGYg1IVAwcoHTU=; 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charset="utf-8" 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: "Russell King (Oracle)" Cc: Ard Biesheuvel Cc: Wang Kefeng Cc: Ben Hutchings Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook Acked-by: Ard Biesheuvel --- arch/arm/mm/fault.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index e96fb40b9cc3..e804432e905e 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -586,6 +586,7 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr,= struct pt_regs *regs) if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs)) return; =20 + pr_alert("8<--- cut here ---\n"); pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n", inf->name, ifsr, addr); =20 --=20 2.34.1