[1.] One line summary of the problem: Kernel OOPS. Machine hanged under heavy load. [2.] Full description of the problem/report: The computer that is handling our e-mail hanged with an OOPS. This is the fifth time. I hope that we'll get it. [3.] Keywords (i.e., modules, networking, kernel): kernel, networking [4.] Kernel version (from /proc/version): Linux version 2.4.3-pre8 (root@k) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Mon Mar 26 14:39:35 EEST 2001 [5.] Output of Oops.. message (if applicable) with symbolic information resolved (see Documentation/oops-tracing.txt) See the other attached file. [6.] A small shell script or example program which triggers the problem (if possible) [7.] Environment [7.1.] Software (add the output of the ver_linux script here) Linux k 2.4.3-pre8 #1 SMP Mon Mar 26 14:39:35 EEST 2001 i686 unknown Gnu C egcs-2.91.66 Gnu make 3.79 binutils 2.10.1.0.2 util-linux 2.10o modutils 2.4.2 e2fsprogs 1.19 PPP 2.3.11 Linux C Library 2.2.1 ldd: version 1.9.9 Procps 2.0.7 Net-tools 1.57 Kbd 0.99 Sh-utils 2.0 Modules Loaded [7.2.] Processor information (from /proc/cpuinfo): processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 736.019 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1468.00 processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 736.019 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1471.28 [7.3.] Module information (from /proc/modules): none [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem) 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0376-0376 : ide1 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0cf8-0cff : PCI conf1 5000-500f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] 6000-607f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] 9000-9fff : PCI Bus #01 9000-907f : Silicon Integrated Systems [SiS] 86C326 a000-a00f : VIA Technologies, Inc. Bus Master IDE a000-a007 : ide0 a008-a00f : ide1 ac00-ac07 : Triones Technologies, Inc. HPT366 b000-b003 : Triones Technologies, Inc. HPT366 b400-b407 : Triones Technologies, Inc. HPT366 b800-b803 : Triones Technologies, Inc. HPT366 bc00-bcff : Triones Technologies, Inc. HPT366 bc00-bc07 : ide2 bc08-bc0f : ide3 bc10-bcff : HPT370 c000-c0ff : Realtek Semiconductor Co., Ltd. RTL-8139 c000-c0ff : 8139too 00000000-0009fbff : System RAM 0009fc00-0009ffff : System RAM 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-1fffffff : System RAM 00100000-0021da15 : Kernel code 0021da16-002817bf : Kernel data d0000000-d3ffffff : VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] d4000000-d5ffffff : PCI Bus #01 d5000000-d500ffff : Silicon Integrated Systems [SiS] 86C326 d7000000-d77fffff : PCI Bus #01 d7000000-d77fffff : Silicon Integrated Systems [SiS] 86C326 d7800000-d78000ff : Realtek Semiconductor Co., Ltd. RTL-8139 d7800000-d78000ff : 8139too fec00000-fec00fff : reserved fee00000-fee00fff : reserved ffff0000-ffffffff : reserved [7.5.] PCI information ('lspci -vvv' as root) 00:00.0 Host bridge: VIA Technologies, Inc. VT82C691 [Apollo PRO] (rev c4) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- Fast B2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR - Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP] (prog-if 00 [Normal decode ]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- Fast B2B- Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR - Reset- FastB2B- Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super] (rev 40) Subsystem: VIA Technologies, Inc. VT82C686/A PCI to ISA Bridge Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- Fast B2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR - TAbort- SERR - TAbort- SERR - TAbort- SERR - [disabled] [size=128K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- Fast B2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR - [disabled] [size=64K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable+ DSel=0 DScale=0 PME- 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 86C326 (rev 0b) (prog-if 00 [VGA]) Subsystem: Palit Microsystems Inc. SiS6326 GUI Accelerator Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- Fast B2B- Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR - [disabled] [size=64K] Capabilities: [40] Power Management version 1 Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] AGP version 1.0 Status: RQ=1 SBA- 64bit- FW- Rate=x1,x2 Command: RQ=0 SBA- AGP- 64bit- FW- Rate= [7.6.] SCSI information (from /proc/scsi/scsi) no scsi adapters [7.7.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant): This is a very loaded server running lots of apache processes and sendmail. [X.] Other notes, patches, fixes, workarounds: