From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELtDm+TEN7qakYI1uSswCcHdraNrGlfClc4yzZTEksjQb07wFH8L0fU+tZsAsCH84Om2In7e ARC-Seal: i=1; a=rsa-sha256; t=1519676488; cv=none; d=google.com; s=arc-20160816; b=vnLytS6gPRcQ61/JQm096qiKkAzAcmNQOCGtuyFioP7eNOjloCyFffNdPoMP9AHClZ ST2jWsUFDcFWdsEB24AHcInGVGk99c2zM16u3UIVEMO4yh83AJOywVXe5sDRuna7YNGo E98ljfVK9eBGcvv9sa6k2bsIsvpkyk9iurC7zTQK6MpHp1B0/eCVWHFo2OemOYukJMeI 2H2UsLSCOkVJOqlLQrsRZcbjyg+HKWY3lHvi+OfQsRynw8bPbZzuKCXD0IQTV6C/sk+d x1+QwpUgdVzhS5PvsTCZsSAHDUwjmFM/7Dk9sZtZJ1u2fNiyb6IzPsJa+iQjLRd5hDa3 /Cog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=/QB82oLoZFAWMiPh+eiU2NKbfgr0lHGNuXMvusdLGg0=; b=yiPrFqfU/WJl1Q0cm2Du/5p0iVwHX65NAvJ+eW2Ze2RL4lvYyt4QSpDu9FXz7Cy9NR 0FF978X8qxQ62irn7zWDHcXHWG1CQe4ZRmReKmpP8XojjRbToJh8oHbbjhz6oxj9s+KN 39t3sNbKH7Np223sB1j19yHSENDHK7dg8dBD0yP0RYZ/f7nwWUGhNGzIzdM7WGLX84sp WRt028Ey7d78SIcGiVTgR3XR7lGIpbRXhkTaa+EPclcssf1FN5t+VyNUd1JkaipaCQjI rkJDsDiLbz+hkYDaQoPCTHjHHqoNKQipWpEthHkYMrhKkGnTtvZ3wp7rzgieCX+zQGHj IRvQ== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Weiser , Will Deacon Subject: [PATCH 4.9 15/39] arm64: Disable unhandled signal log messages by default Date: Mon, 26 Feb 2018 21:20:36 +0100 Message-Id: <20180226201644.357861004@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180226201643.660109883@linuxfoundation.org> References: <20180226201643.660109883@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1593495943344886080?= X-GMAIL-MSGID: =?utf-8?q?1593496293856113882?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Weiser commit 5ee39a71fd89ab7240c5339d04161c44a8e03269 upstream. aarch64 unhandled signal kernel messages are very verbose, suggesting them to be more of a debugging aid: sigsegv[33]: unhandled level 2 translation fault (11) at 0x00000000, esr 0x92000046, in sigsegv[400000+71000] CPU: 1 PID: 33 Comm: sigsegv Tainted: G W 4.15.0-rc3+ #3 Hardware name: linux,dummy-virt (DT) pstate: 60000000 (nZCv daif -PAN -UAO) pc : 0x4003f4 lr : 0x4006bc sp : 0000fffffe94a060 x29: 0000fffffe94a070 x28: 0000000000000000 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000000 x24: 00000000004001b0 x23: 0000000000486ac8 x22: 00000000004001c8 x21: 0000000000000000 x20: 0000000000400be8 x19: 0000000000400b30 x18: 0000000000484728 x17: 000000000865ffc8 x16: 000000000000270f x15: 00000000000000b0 x14: 0000000000000002 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0008000020008008 x9 : 000000000000000f x8 : ffffffffffffffff x7 : 0004000000000000 x6 : ffffffffffffffff x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000004003e4 x2 : 0000fffffe94a1e8 x1 : 000000000000000a x0 : 0000000000000000 Disable them by default, so they can be enabled using /proc/sys/debug/exception-trace. Cc: Signed-off-by: Michael Weiser Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -50,7 +50,7 @@ static const char *handler[]= { "Error" }; -int show_unhandled_signals = 1; +int show_unhandled_signals = 0; /* * Dump out the contents of some kernel memory nicely...