[1.] One line summary of the problem: During burning of CD onto SCSI driver (using cdrecord) crashes. during the burn (10% or so) it crashes with "Unable to handle kernel null pointer" [2.] Full description of the problem/report: During burning of CD onto SCSI driver (using cdrecord) crashes. during the burn (10% or so) it crashes with "Unable to handle kernel null pointer" and dumps a whole lot of things to the screen (flags of some sort, eg "eax=..") [3.] Keywords (i.e., modules, networking, kernel): scsi, cd record, null pointer [4.] Kernel version (from /proc/version): Linux version 2.4.0-test12 (root@crazney) (gcc version 2.95.3 19991030 (prerelease)) #5 Tue Dec 5 10:55:46 EST 2000 [7.] Environment console?? [7.1.] Software (add the output of the ver_linux script here) Cdrecord 1.8.1 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jörg Schilling $ sh ver_linux -- Versions installed: (if some fields are empty or look -- unusual then possibly you have very old versions) Linux crazney 2.4.0-test12 #5 Tue Dec 5 10:55:46 EST 2000 i686 unknown Kernel modules 2.3.17 Gnu C 2.95.3 Gnu Make 3.79 Binutils 2.9.5.0.31 Linux C Library 2.1.3 Dynamic linker ldd (GNU libc) 2.1.3 Procps 2.0.6 Mount 2.10h Net-tools 1.55 Console-tools 0.2.3 Sh-utils 2.0 Modules Loaded NVdriver 8139too emu10k1 [7.2.] Processor information (from /proc/cpuinfo): $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 701.606 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 3 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1399.19 [7.3.] Module information (from /proc/modules): $ cat /proc/modules NVdriver 530416 17 (autoclean) 8139too 15296 1 (autoclean) emu10k1 42960 0 [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem) $ cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 0376-0376 : ide1 03c0-03df : vga+ 03f6-03f6 : ide0 0cf8-0cff : PCI conf1 4000-403f : Intel Corporation 82371AB PIIX4 ACPI 5000-501f : Intel Corporation 82371AB PIIX4 ACPI c000-c01f : Intel Corporation 82371AB PIIX4 USB c400-c4ff : Symbios Logic Inc. (formerly NCR) 53c810 c400-c47f : ncr53c8xx c800-c81f : Creative Labs SB Live! EMU10000 c800-c81f : EMU10K1 cc00-cc07 : Creative Labs SB Live! d000-d0ff : Accton Technology Corporation SMC2-1211TX d000-d0ff : eth0 d400-d407 : Triones Technologies, Inc. HPT366 d400-d407 : ide2 d800-d803 : Triones Technologies, Inc. HPT366 d802-d802 : ide2 dc00-dcff : Triones Technologies, Inc. HPT366 dc00-dc07 : ide2 dc10-dcff : HPT366 e000-e007 : Triones Technologies, Inc. HPT366 (#2) e400-e403 : Triones Technologies, Inc. HPT366 (#2) e800-e8ff : Triones Technologies, Inc. HPT366 (#2) e800-e807 : ide3 e810-e8ff : HPT366 f000-f00f : Intel Corporation 82371AB PIIX4 IDE f000-f007 : ide0 f008-f00f : ide1 $ cat /proc/iomem 00000000-0009efff : System RAM 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000d0000-000d17ff : Extension ROM 000f0000-000fffff : System ROM 00100000-09ffffff : System RAM 00100000-00257e2f : Kernel code 00257e30-0026cee3 : Kernel data d8000000-dfffffff : PCI Bus #01 d8000000-dfffffff : nVidia Corporation NV15 (Geforce2 GTS) e0000000-e3ffffff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge e4000000-e7ffffff : S3 Inc. ViRGE/DX or /GX e8000000-e9ffffff : PCI Bus #01 e8000000-e8ffffff : nVidia Corporation NV15 (Geforce2 GTS) ec000000-ec0000ff : Accton Technology Corporation SMC2-1211TX ec000000-ec0000ff : eth0 ec001000-ec0010ff : Symbios Logic Inc. (formerly NCR) 53c810 [7.5.] PCI information ('lspci -vvv' as root) See end of email (look down!) [7.6.] SCSI information (from /proc/scsi/scsi) $ cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: MATSHITA Model: CD-R CW-7502 Rev: 4.17 Type: CD-ROM ANSI SCSI revision: 02 [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): scsi card is a Symbios Logic Inc. (formerly NCR) 53c810 compiled INTO the kernle (statically linked). other scsi stuff in the kernel is: *SCSI support [Y] *SCSI CD-ROM support [Y] 2 max drives as modules *SCSI generic support [Y] ---- Low level <*> NCR53C8XX SCSI support (4) default tagged command queue depth (32) maximum number of queued commands (20) synchronous transfers frequency in MHz -------------------- output of "cdrecord -scanbus": # cdrecord -scanbus Cdrecord 1.8.1 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jörg Schilling Using libscg version 'schily-0.1' scsibus0: 0,0,0 0) * 0,1,0 1) 'MATSHITA' 'CD-R CW-7502 ' '4.17' Removable CD-ROM 0,2,0 2) * 0,3,0 3) * 0,4,0 4) * 0,5,0 5) * 0,6,0 6) * 0,7,0 7) * ----------------------- I havent burned any cd's since 2.4-test5, so i dont know when this problem was introduced. ----------------------------- [7.5.] PCI information ('lspci -vvv' as root) # lspci -vvv 00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- Latency: 32 set Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M] Capabilities: [a0] AGP version 1.0 Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2 Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none> 00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 set Bus: primary=00, secondary=01, subordinate=01, sec-latency=32 I/O behind bridge: 0000f000-00000fff Memory behind bridge: e8000000-e9ffffff Prefetchable memory behind bridge: d8000000-dfffffff BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B+ 00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02) Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0 set 00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) (prog-if 80 [Master]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 set Region 4: I/O ports at f000 [size=16] 00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00 [UHCI]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 set Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at c000 [size=32] 00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02) Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- 00:09.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01) (prog-if 00 [VGA]) Subsystem: S3 Inc. ViRGE/DX Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin A routed to IRQ 4 Region 0: Memory at e4000000 (32-bit, non-prefetchable) [disabled] [size=64M] Expansion ROM at ea000000 [disabled] [size=64K] 00:0b.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c810 (rev 23) Subsystem: Symbios Logic Inc. (formerly NCR) 8100S Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 8 min, 64 max, 32 set, cache line size 08 Interrupt: pin A routed to IRQ 11 Region 0: I/O ports at c400 [size=256] Region 1: Memory at ec001000 (32-bit, non-prefetchable) [size=256] Capabilities: [40] Power Management version 1 Flags: PMEClk- AuxPwr- DSI- D1- D2- PME- Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0d.0 Multimedia audio controller: Creative Labs SB Live! EMU10000 (rev 08) Subsystem: Creative Labs CT4832 SBLive! Value Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 2 min, 20 max, 32 set Interrupt: pin A routed to IRQ 3 Region 0: I/O ports at c800 [size=32] Capabilities: [dc] Power Management version 1 Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME- Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0d.1 Input device controller: Creative Labs SB Live! (rev 08) Subsystem: Creative Labs Gameport Joystick Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 set Region 0: I/O ports at cc00 [size=8] Capabilities: [dc] Power Management version 1 Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME- Status: D0 PME-Enable- DSel=0 DScale=0 PME- 00:0f.0 Ethernet controller: Accton Technology Corporation SMC2-1211TX (rev 10) Subsystem: Accton Technology Corporation EN-1207D Fast Ethernet Adapter Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 min, 64 max, 32 set Interrupt: pin A routed to IRQ 4 Region 0: I/O ports at d000 [size=256] Region 1: Memory at ec000000 (32-bit, non-prefetchable) [size=256] Capabilities: [50] Power Management version 2 Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME+ Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [60] Vital Product Data 00:13.0 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (rev 01) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 8 min, 8 max, 248 set, cache line size 08 Interrupt: pin A routed to IRQ 3 Region 0: I/O ports at d400 [size=8] Region 1: I/O ports at d800 [size=4] Region 4: I/O ports at dc00 [size=256] Expansion ROM at eb000000 [disabled] [size=128K] 00:13.1 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (rev 01) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 8 min, 8 max, 248 set, cache line size 08 Interrupt: pin B routed to IRQ 3 Region 0: I/O ports at e000 [size=8] Region 1: I/O ports at e400 [size=4] Region 4: I/O ports at e800 [size=256] 01:00.0 VGA compatible controller: nVidia Corporation NV15 (Geforce2 GTS) (rev a3) (prog-if 00 [VGA]) Subsystem: Asustek Computer, Inc.: Unknown device 400e Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 5 min, 1 max, 248 set Interrupt: pin A routed to IRQ 10 Region 0: Memory at e8000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at d8000000 (32-bit, prefetchable) [size=128M] Expansion ROM at <unassigned> [disabled] [size=64K] Capabilities: [60] Power Management version 1 Flags: PMEClk- AuxPwr- DSI- D1- D2- PME- Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [44] AGP version 2.0 Status: RQ=31 SBA- 64bit- FW+ Rate=x1,x2 Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/