From owner-freebsd-dtrace@freebsd.org Tue May 10 17:16:30 2016 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C0F20B3579C for ; Tue, 10 May 2016 17:16:30 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-pf0-x229.google.com (mail-pf0-x229.google.com [IPv6:2607:f8b0:400e:c00::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 92BCF17C0 for ; Tue, 10 May 2016 17:16:30 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-pf0-x229.google.com with SMTP id c189so8263965pfb.3 for ; Tue, 10 May 2016 10:16:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=u8l4KYfqj1b2NPYscLP3ABkBd/y0GQJbbSIRyDTnZfU=; b=KUmfyY8MYak1bT/G38mO2DBt1oiX4rZtqa24d1mDXC9p/dd63tES0HEckVj7HF6Rmh DVDvZd7qBmz88erapSOjhLZXhIVkzFToob3Mc3S/AZhMrBnN8WEGvZrqBA9pXPkKDrlD 0OPo+PM/0XlazG7w4xH4jH6q7jFkldNzBvJ63YCfZ76OTVF6kmLkTk49Ujg5cu0WBfsl XiJinHb4vPF4BhcVD4FrhGUDck5+KkZebP3j94Zu5oJXoqjzs7xhJD9TYipRotHyvL+V RB1xrg+tOX9+jy+6X1FUx9Tl1xWy13MyvsPYKwQMjpOEks8uUfmd/Fng2H79fMtjTJEm CQwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=u8l4KYfqj1b2NPYscLP3ABkBd/y0GQJbbSIRyDTnZfU=; b=a0CAkaIO55AJKuU61Yj15FdeRjCGoU4cWsF20AFLsMZ62ID+B7knO+jwb100z3zLGA YWuEExKWy3T/pWXRPVhVuUBW5v3bn2syWYGoiJ7CxTtvQMUDKpLDU8+2viLs4IF8ET5d G9PZSa6eraFZ2uq5QQcJSy7ByanUGP0+RU70E0gsXLnIZBGXbdVulwrJ16jNPg8b1pdc C2GIJ/xxIeokJPhJlDQqhO+HtvP93TIOMGwWs1R8MBbulsl2e2d2I6uxJ3o8VzQ9zA2s ZrcCzl+t4/vZl7wkM7Q1PxZlhTAed3v4zNnxndXF9wvnsPb0wxanVfRIPgNFlhPLTica QyuQ== X-Gm-Message-State: AOPr4FWPpwydlc9E9rE9rMOAVAnekvg8nADE4r118uBwYgvdI7f5cMnDAdR+Muc0tsVMsQ== X-Received: by 10.98.85.194 with SMTP id j185mr59878946pfb.68.1462900590157; Tue, 10 May 2016 10:16:30 -0700 (PDT) Received: from wkstn-mjohnston.west.isilon.com (c-76-104-201-218.hsd1.wa.comcast.net. [76.104.201.218]) by smtp.gmail.com with ESMTPSA id zn7sm5823084pac.41.2016.05.10.10.16.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 10 May 2016 10:16:29 -0700 (PDT) Sender: Mark Johnston Date: Tue, 10 May 2016 10:20:15 -0700 From: Mark Johnston To: "Bjoern A. Zeeb" Cc: freebsd-dtrace@freebsd.org Subject: Re: DTrace panic Message-ID: <20160510172015.GA1518@wkstn-mjohnston.west.isilon.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.0 (2016-04-01) X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 May 2016 17:16:30 -0000 On Mon, May 09, 2016 at 04:05:44PM +0000, Bjoern A. Zeeb wrote: > Hi, > > I am seeing this panic when trying to use DTrace on r299073. I > cannot rule out that it's my (experimental) environment; just wanted > to check if it might have been a known breakage before digging into it. I've never seen this, FWIW. I'm currently running r299276 with some local changes. > > # dtrace -n 'dtrace:::BEGIN { printf("Hello FreeBSD!\n"); }' > dtrace -n 'dtrace:::BEGIN { printf("Hello FreeBSD!\n"); }' > dtrace: description 'dtrace:::BEGIN ' matched 1 probe > kernel trap 12 with interrupts disabled > > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0xae > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xfffff800012ebc03 > stack pointer = 0x28:0xfffffe0000226740 > frame pointer = 0x28:0xfffffe0000226780 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = IOPL = 0 > current process = 576 (dtrace) > [ thread pid 576 tid 100048 ] > Stopped at 0xfffff800012ebc03: addl %eax,(%rax) > db> where > where > Tracing pid 576 tid 100048 td 0xfffff80001f0f000 > dmapbase() at 0xfffff800012ebc03/frame 0xfffffe0000226780 > dtrace_xcall() at dtrace_xcall+0xb2/frame 0xfffffe00002267d0 > dtrace_fuword32() at dtrace_fuword32+0xfd66/frame 0xfffffe0000226830 > dtrace_fuword32() at dtrace_fuword32+0xa6ec/frame 0xfffffe0000226930 > dev2udev() at dev2udev+0x37ef/frame 0xfffffe0000226990 > kern_ioctl() at kern_ioctl+0x1a7/frame 0xfffffe0000226a00 > sys_ioctl() at sys_ioctl+0x171/frame 0xfffffe0000226ad0 > amd64_syscall() at amd64_syscall+0x4c6/frame 0xfffffe0000226bf0 > Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0000226bf0 > --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80125267a, rsp = 0x7fffffffe9c8, rbp = 0x7fffffffea10 --- > > db> show reg > show reg > cs 0x20 > ds 0x3b > es 0x3b > fs 0x13 > gs 0x1b > ss 0x28 > rax 0xae > rcx 0 > rdx 0xfffffe0000817000 > rbx 0xffffffff802b43f0 > rsp 0xfffffe0000226758 > rbp 0xfffffe0000226780 > rsi 0xffffffff802b43f0 > rdi 0xfffff800012ebc00 > r8 0xfffff800012ebc00 > r9 0xfffff800012ebc00 > r10 0xfffff800012ebc00 > r11 0xfffffe00002266f8 > r12 0xffffffff80429f30 smp_no_rendevous_barrier > r13 0xfffffe0001127000 > r14 0xfffff800012ebc00 > -More-- > r15 0xfffff800012ebc00 > rip 0xfffff800012ebc03 > rflags 0xae > 0xfffff800012ebc03: addl %eax,(%rax) > > _______________________________________________ > freebsd-dtrace@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-dtrace > To unsubscribe, send any mail to "freebsd-dtrace-unsubscribe@freebsd.org"