From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47597) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bUr1g-0001xK-7a for qemu-devel@nongnu.org; Wed, 03 Aug 2016 03:55:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bUr1b-0007MP-RK for qemu-devel@nongnu.org; Wed, 03 Aug 2016 03:55:39 -0400 Message-ID: <1470210923.12584.67.camel@kernel.crashing.org> From: Benjamin Herrenschmidt Date: Wed, 03 Aug 2016 17:55:23 +1000 Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH] ppc: Fix catching some segfaults in user mode List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org Cc: qemu-devel@nongnu.org, david@gibson.dropbear.id.au, Anton Blanchard The usermode "translate" code generates an error code value that has the "is_write" bit set, which causes our switch/case to miss and display "Invalid segfault errno" and a spurrious second state dump. Fix it. Signed-off-by: Benjamin Herrenschmidt --- linux-user/main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/linux-user/main.c b/linux-user/main.c index 24f34e6..eb9975c 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -1656,6 +1656,7 @@ void cpu_loop(CPUPPCState *env) /* XXX: check this. Seems bugged */ switch (env->error_code & 0xFF000000) { case 0x40000000: + case 0x42000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR;