A bug i had with kernel version 2.4.0-test9 is still there, but there are additional information: When parport_pc is compiled as module, and not already loaded "modprobe imm" yields the LOCKUP message (subject). The iomega-drive is usable after the modprobe and despite of the lockup. If parport_pc is compiled into the kernel, or the modules is already loaded, this lockup doen not happen. the trace looks like this: 0: ?? (assume spin_lock_irqsave in blk_get_queue but printed EIP seems to be sensless - area with no code according to the map file) 1: ll_rw_blk.c: 874 generic_make_request -> "after line q = blk_get_queue(...)" 2: ll_rw_blk.c: 925 ll_rw_block 3: ll_rw_blk.c: 287 writeout_one_page 4: filemap.c: 332 do_buffer_fdatasync 5: filemap.c: 352 generic_buffer_fdatasync 5.1: filemap.c: 278 writeout_one_page this is on the stack trace, but maybe only since its adress is used in call (5) 6: ext2/fsync.c: 140 ext2_sync_file 7: fs/buffer.c: 370 sys_fsync Please CC me, if you have some comments, ideas, and thanks for your time. Gert additional information: Linux version 2.4.0-test11--pre3 (gcc version 2.95.2 19991024 (release)) #30 SMP Son Nov 12 19:15:40 CET 2000 Kernel modules 2.3.19 Gnu C 2.95.2 Gnu Make 3.77 Binutils 2.9.1.0.25 Linux C Library 2.1.1 Dynamic linker ldd (GNU libc) 2.1.1 Procps 2.0.2 Mount 2.9w Net-tools 1.52 Console-tools 0.2.0 Sh-utils 2.0 Modules Loaded sd_mod nfsd lockd sunrpc 8139too nls_cp437 vfat fat awe_wave sb sb_lib uart401 sound soundcore advansys scsi_mod /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 5 model name : Pentium II (Deschutes) stepping : 2 cpu MHz : 451.000029 cache size : 512 KB fdiv_bug : no hlt_bug : no sep_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 bogomips : 897.84 processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 5 model name : Pentium II (Deschutes) stepping : 2 cpu MHz : 451.000029 cache size : 512 KB fdiv_bug : no hlt_bug : no sep_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 bogomips : 901.12 /proc/pci PCI devices found: Bus 0, device 0, function 0: Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 3). Master Capable. Latency=64. Prefetchable 32 bit memory at 0xe4000000 [0xe7ffffff]. Bus 0, device 1, function 0: PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 3). Master Capable. Latency=64. Min Gnt=136. Bus 0, device 4, function 0: ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 2). Bus 0, device 4, function 1: IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 1). Master Capable. Latency=32. I/O at 0xd800 [0xd80f]. Bus 0, device 4, function 2: USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 1). Master Capable. Latency=32. I/O at 0xd400 [0xd41f]. Bus 0, device 4, function 3: Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 2). Bus 0, device 9, function 0: SCSI storage controller: Advanced System Products, Inc ABP940-U / ABP960-U (rev 3). IRQ 9. Master Capable. Latency=32. Min Gnt=4.Max Lat=4. I/O at 0xd000 [0xd0ff]. Non-prefetchable 32 bit memory at 0xde800000 [0xde8000ff]. Bus 0, device 10, function 0: Multimedia video controller: Brooktree Corporation Bt878 (rev 2). IRQ 10. Master Capable. Latency=32. Min Gnt=16.Max Lat=40. Prefetchable 32 bit memory at 0xe1000000 [0xe1000fff]. Bus 0, device 10, function 1: Multimedia controller: Brooktree Corporation Bt878 (rev 2). IRQ 10. Master Capable. Latency=32. Min Gnt=4.Max Lat=255. Prefetchable 32 bit memory at 0xe0800000 [0xe0800fff]. Bus 0, device 12, function 0: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 16). IRQ 11. Master Capable. Latency=32. Min Gnt=32.Max Lat=64. I/O at 0xb800 [0xb8ff]. Non-prefetchable 32 bit memory at 0xde000000 [0xde0000ff]. Bus 1, device 0, function 0: VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 5). IRQ 11. Master Capable. Latency=64. Min Gnt=16.Max Lat=32. Prefetchable 32 bit memory at 0xe2000000 [0xe3ffffff]. Non-prefetchable 32 bit memory at 0xdf800000 [0xdf803fff]. Non-prefetchable 32 bit memory at 0xdf000000 [0xdf7fffff]. /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: PLEXTOR Model: CD-ROM PX-32TS Rev: 1.02 Type: CD-ROM ANSI SCSI revision: 02 Host: scsi0 Channel: 00 Id: 03 Lun: 00 Vendor: TEAC Model: CD-R55S Rev: 1.0H Type: CD-ROM ANSI SCSI revision: 02 Host: scsi1 Channel: 00 Id: 06 Lun: 00 Vendor: IOMEGA Model: ZIP 250 Rev: J.45 Type: Direct-Access ANSI SCSI revision: 02 - 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/