From owner-freebsd-hackers@FreeBSD.ORG Fri Oct 10 21:08:17 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 6026A410 for ; Fri, 10 Oct 2014 21:08:17 +0000 (UTC) Received: from mail-pa0-x22e.google.com (mail-pa0-x22e.google.com [IPv6:2607:f8b0:400e:c03::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 36BA124D for ; Fri, 10 Oct 2014 21:08:17 +0000 (UTC) Received: by mail-pa0-f46.google.com with SMTP id fa1so2396011pad.19 for ; Fri, 10 Oct 2014 14:08:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=gXc6VPPZcOvCyUatnpLwuY2m2hKMe9hJBUnnD6+O5JM=; b=YS62/DNvPIuLEDvBB69fyhCW8MlEC7trdUUDfZEGx58ym4t6AANIChb3edTMrOYLMH jizC/ZHaMpM2+p0ZKMobpiB+SJRikWLRq2oRyj5+XGmgHR7DHcKTbWB1rP74ml58ESmI 2wCIGbBo3aaah0d7giZ2U/FyuWiYjZcmhECOWzvnMzgfSTVgI21PaRqK2a4GtRB9n9Aq l/bnKTwzp/10LYgVsAJhsA7fot3b7JYGYGtwFRhD9kWGwIMyun9JD9deMeZvr7SjUq0T bTD+fbcTGeG2Gk1njXytsE3vWnMmY2ZLSoSFdXbhijh//WIehdVGxS5pr9oMAmQKzc2G vlDQ== X-Received: by 10.66.141.165 with SMTP id rp5mr7714220pab.115.1412975296764; Fri, 10 Oct 2014 14:08:16 -0700 (PDT) Received: from [10.192.166.0] (stargate.chelsio.com. [67.207.112.58]) by mx.google.com with ESMTPSA id y1sm4342725pdg.47.2014.10.10.14.08.14 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Oct 2014 14:08:15 -0700 (PDT) Sender: Navdeep Parhar Message-ID: <54384ABD.5080806@FreeBSD.org> Date: Fri, 10 Oct 2014 14:08:13 -0700 From: Navdeep Parhar User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: "freebsd-hackers@freebsd.org" Subject: panic in ivy_rng_store() when compiled with -O0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Oct 2014 21:08:17 -0000 I built my kernel + modules (head as of today) with -O0 and now it panics during boot. I did bump up KSTACK_PAGES significantly so that's not the problem. I'm going to take out the RNG device next and see if I can get past this. Regards, Navdeep Fatal trap 9: general protection fault while in kernel mode cpuid = 0; apic id = 00 instruction pointer = 0x20:0xffffffff814ac661 stack pointer = 0x28:0xfffffe01ed6c6930 frame pointer = 0x28:0xfffffe01ed6c6960 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 14 (rand_harvestq) [ thread pid 14 tid 100017 ] Stopped at ivy_rng_store+0x31: movq %rdi,(%rdi) db> bt Tracing pid 14 tid 100017 td 0xfffff800042c84c0 ivy_rng_store() at ivy_rng_store+0x31/frame 0xfffffe01ed6c6960 random_ivy_read() at random_ivy_read+0x78/frame 0xfffffe01ed6c6990 live_entropy_sources_feed() at live_entropy_sources_feed+0x73/frame 0xfffffe01ed6c69d0 random_kthread() at random_kthread+0x224/frame 0xfffffe01ed6c6a30 fork_exit() at fork_exit+0x14a/frame 0xfffffe01ed6c6ab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe01ed6c6ab0 --- trap 0, rip = 0, rsp = 0xfffffe01ed6c6b70, rbp = 0 ---