Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 12 Sep 2002 16:21:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 12 Sep 2002 16:21:18 -0400 Received: from deimos.hpl.hp.com ([192.6.19.190]:58576 "EHLO deimos.hpl.hp.com") by vger.kernel.org with ESMTP id ; Thu, 12 Sep 2002 16:21:15 -0400 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15744.63576.479593.109825@napali.hpl.hp.com> Date: Thu, 12 Sep 2002 13:26:00 -0700 To: Galen Arnold Cc: linux-kernel@vger.kernel.org Subject: Re: PROBLEM: ia64 kernel hangs In-Reply-To: References: X-Mailer: VM 7.07 under Emacs 21.2.1 Reply-To: davidm@hpl.hp.com X-URL: http://www.hpl.hp.com/personal/David_Mosberger/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6975 Lines: 147 I cannot reproduce this on 2.4.19 (the program runs to completion without starting a subprocess, because the memory limit is so low). 2.4.16 is ancient and I don't have it on any machine at the moment. --david >>>>> On Thu, 12 Sep 2002 15:06:45 -0500 (CDT), Galen Arnold said: Galen> [1.] ia64 linux 2.4.16 , 2.4.19 kernels hang with user code Galen> calling setrlimit() and system() Galen> [2.] A short user code can hang ia64 systems, but not ia32 Galen> linux. Galen> [3.] setrlimit() system() hang Galen> [4.] 2.4.16 ia64 & 2.4.19 ia64 Galen> [5.] kernel hangs, no output, system goes unresponsive for Galen> about an hour Galen> [6.] Galen> #include #include #include Galen> Galen> #define MAX_MEM 1000 int main(void) { struct rlimit Galen> my_rlimit; Galen> my_rlimit.rlim_cur= 1024 * MAX_MEM; Galen> my_rlimit.rlim_max= my_rlimit.rlim_cur; Galen> setrlimit(RLIMIT_AS, &my_rlimit); system("/bin/sh -c Galen> 'ulimit -a'"); } Galen> [7.] Galen> LANG=en_US ARCH=ia64 SHELL=/bin/bash HOSTTYPE=ia64 Galen> OSTYPE=linux-gnu Galen> PATH=/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin Galen> [7.1] Linux user01 2.4.16 #1 SMP Mon Dec 10 11:03:09 CST 2001 Galen> ia64 unknown Galen> Gnu C 2.96 Gnu make 3.79.1 binutils 2.10.91.0.2 util-linux Galen> 2.11f mount 2.11b modutils 2.4.6 e2fsprogs 1.26 reiserfsprogs Galen> 3.x.0f PPP 2.4.0 Linux C Library 2.2.4 Dynamic linker (ldd) Galen> 2.2.4 Procps 2.0.7 Net-tools 1.60 Console-tools 0.3.3 Galen> Sh-utils 2.0 Modules Loaded sk98lin e100 Galen> Linux mantis 2.4.19 #2 SMP Wed Sep 11 16:53:31 CDT 2002 ia64 Galen> unknown Galen> Gnu C 2.96 Gnu make 3.79.1 binutils 2.11.90.0.8 util-linux Galen> 2.11f mount 2.11g modutils 2.4.13 e2fsprogs 1.23 Galen> reiserfsprogs 3.x.0j PPP 2.4.1 isdn4k-utils 3.1pre1 Linux C Galen> Library 2.2.4 Dynamic linker (ldd) 2.2.4 Procps 2.0.7 Galen> Net-tools 1.60 Console-tools 0.3.3 Sh-utils 2.0.11 Modules Galen> Loaded e1000 nls_iso8859-1 nls_cp437 vfat fat keybdev hid Galen> usbkbd input usb-uhci usbcore mptscsih mptbase Galen> [7.2] processor : 0 vendor : GenuineIntel arch : IA-64 family Galen> : Itanium 2 model : 0 revision : 5 archrev : 0 features : Galen> branchlong cpu number : 41600 cpu regs : 4 cpu MHz : Galen> 995.901000 itc MHz : 995.901000 BogoMIPS : 1488.97 Galen> [7.2] e1000 133632 1 nls_iso8859-1 4624 1 (autoclean) Galen> nls_cp437 6128 1 (autoclean) vfat 26440 1 (autoclean) fat Galen> 77752 0 (autoclean) [vfat] keybdev 4496 0 (unused) hid 48200 Galen> 0 (unused) usbkbd 7360 0 (unused) input 9832 0 [keybdev hid Galen> usbkbd] usb-uhci 64184 0 (unused) usbcore 163544 1 [hid Galen> usbkbd usb-uhci] mptscsih 79568 3 mptbase 78152 3 [mptscsih] Galen> [7.4] 000001f0-000001f7 : ide0 000002f8-000002ff : Galen> serial(auto) 000003c0-000003df : vga+ 000003f6-000003f6 : Galen> ide0 000003f8-000003ff : serial(auto) 00005cc0-00005cdf : Galen> usb-uhci 00005ce0-00005cff : usb-uhci Galen> fbfe0000-fbffffff : e1000 Galen> [7.5] 00:1d.0 USB Controller: Intel Corporation: Unknown Galen> device 24c2 (rev 01) 00:1d.1 USB Controller: Intel Galen> Corporation: Unknown device 24c4 (rev 01) 00:1e.0 PCI bridge: Galen> Intel Corporation 82820 820 (Camino 2) Chipset PCI (rev 81) Galen> 00:1f.0 ISA bridge: Intel Corporation: Unknown device 24c0 Galen> (rev 01) 00:1f.1 IDE interface: Intel Corporation: Unknown Galen> device 24cb (rev 01) 01:00.0 Ethernet controller: Intel Galen> Corporation: Unknown device 100e (rev 02) 01:01.0 VGA Galen> compatible controller: ATI Technologies Inc Rage XL (rev 27) Galen> 02:1c.0 PIC: Intel Corporation: Unknown device 1461 (rev 03) Galen> 02:1d.0 PCI bridge: Intel Corporation: Unknown device 1460 Galen> (rev 03) 02:1e.0 PIC: Intel Corporation: Unknown device 1461 Galen> (rev 03) 02:1f.0 PCI bridge: Intel Corporation: Unknown Galen> device 1460 (rev 03) 03:1f.0 PCI Hot-plug controller: Intel Galen> Corporation: Unknown device 1462 (rev 03)06:01.0 Ethernet Galen> controller: Intel Corporation 82557 [Ethernet Pro 100] (rev Galen> 0c)06:02.0 SCSI storage controller: LSI Logic / Symbios Logic Galen> (formerly NCR) 53c1030 (rev 03) 06:02.1 SCSI storage Galen> controller: LSI Logic / Symbios Logic (formerly NCR) 53c1030 Galen> (rev 03) 06:1f.0 PCI Hot-plug controller: Intel Corporation: Galen> Unknown device 1462 (rev 03)08:1c.0 PIC: Intel Corporation: Galen> Unknown device 1461 (rev 03) 08:1d.0 PCI bridge: Intel Galen> Corporation: Unknown device 1460 (rev 03) 08:1e.0 PIC: Intel Galen> Corporation: Unknown device 1461 (rev 03) 08:1f.0 PCI bridge: Galen> Intel Corporation: Unknown device 1460 (rev 03) 09:1f.0 PCI Galen> Hot-plug controller: Intel Corporation: Unknown device 1462 Galen> (rev 03)0b:1f.0 PCI Hot-plug controller: Intel Corporation: Galen> Unknown device 1462 (rev 03)0e:1c.0 PIC: Intel Corporation: Galen> Unknown device 1461 (rev 03) 0e:1d.0 PCI bridge: Intel Galen> Corporation: Unknown device 1460 (rev 03) 0e:1e.0 PIC: Intel Galen> Corporation: Unknown device 1461 (rev 03) 0e:1f.0 PCI bridge: Galen> Intel Corporation: Unknown device 1460 (rev 03) 0f:1f.0 PCI Galen> Hot-plug controller: Intel Corporation: Unknown device 1462 Galen> (rev 03) 11:1f.0 PCI Hot-plug controller: Intel Corporation: Galen> Unknown device 1462 (rev 03) Galen> [7.6] Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: Galen> 00 Vendor: MAXTOR Model: ATLAS10K3_18_SCA Rev: B000 Type: Galen> Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Galen> Id: 06 Lun: 00 Vendor: QLogic Model: GEM359 Rev: 0200 Type: Galen> Processor ANSI SCSI revision: 02 Galen> [7.7] Galen> [X.] 2.4.18 and 2.4.9 on ia32 do not produce the hang from Galen> the c program above. Changing the values handed to Galen> setrlimit() will workaround the hang on ia64 (a small limit Galen> will cause the system() call to silently fail, and a larger Galen> [10M] limit will run the system() call successfully). Galen> Please cc: me on responses as I'm not on the list. Galen> -Galen -- + Galen Arnold, consulting group--system engineer Galen> National Center for Supercomputing Applications 605 Galen> E. Springfield Avenue (217) 244-3473 Champaign, IL 61820 Galen> arnoldg@ncsa.uiuc.edu Galen> - To unsubscribe from this list: send the line "unsubscribe Galen> linux-kernel" in the body of a message to Galen> majordomo@vger.kernel.org More majordomo info at Galen> http://vger.kernel.org/majordomo-info.html Please read the Galen> FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/