Hi, While playing with libata in 2.6.17-git from today, I got this bug: SCSI subsystem initialized libata version 1.20 loaded. sata_promise 0000:02:05.0: version 1.04 kmem_cache_create: duplicate cache scsi_cmd_cache <c0159591> kmem_cache_create+0x331/0x390 <e0924371> scsi_setup_command_freelist+0x71/0xf0 [scsi_mod] <e092588e> scsi_host_alloc+0x17e/0x270 [scsi_mod] <e08fd061> ata_host_add+0x41/0xc0 [libata] <c0148c9f> __kzalloc+0x1f/0x50 <e08fd190> ata_device_add+0xb0/0x240 [libata] <e0839baf> pdc_ata_init_one+0x27f/0x330 [sata_promise] <c01dd1a9> pci_call_probe+0x19/0x20 <c01dd20e> __pci_device_probe+0x5e/0x70 <c01dd24f> pci_device_probe+0x2f/0x50 <c0220977> driver_probe_device+0xb7/0xe0 <c02b338a> klist_dec_and_del+0x1a/0x20 <c0220a30> __driver_attach+0x0/0x90 <c0220aa1>__driver_attach+0x71/0x90 <c021fd49> bus_for_each_dev+0x69/0x80 <c0220ae6> driver_attach+0x26/0x30 <c0220a30> __driver_attach+0x0/0x90 <c02202a3> bus_add_driver+0x83/0xc0 <c01dd4ed> __pci_register_driver+0x4d/0x70 <e0880017> pdc_ata_init+0x17/0x1b [sata_promise] <c013a1a0> sys_init_module+0x120/0x1b0 <c0102f27> syscall_call+0x7/0xb How to recreate: - fully modular scsi and libata - modprobe sata_promise ; modprobe sd_mod - rmmod sd_mod ; rmmod sata_promise ; rmmod libata ; rmmod scsi_mod - modprobe sata_promise At first glance Looks to me like scsi_mod forgot to delete the scsi_cmd_cache at module unload. Note that I can only trigger the bug when there are devices connected to the SATA controller. It doesn't look libata related, cause I can also trigger it using the sym53c8xx driver: SCSI subsystem initialized sym0: <895> rev 0x1 at pci 0000:02:06.0 irq 17 kmem_cache_create: duplicate cache scsi_cmd_cache <c0159591> kmem_cache_create+0x331/0x390 <e0924371> scsi_setup_command_freelist+0x71/0xf0 [scsi_mod] <e092588e> scsi_host_alloc+0x17e/0x270 [scsi_mod] <c011e697> printk+0x17/0x20 <e09493e5> sym_attach+0x75/0x3d0 [sym53c8xx] <e0949d99> sym2_probe+0xc9/0x130 [sym53c8xx] <c01dd1a9> pci_call_probe+0x19/0x20 <c01dd20e> __pci_device_probe+0x5e/0x70 <c01dd24f> pci_device_probe+0x2f/0x50 <c0220977> driver_probe_device+0xb7/0xe0 <c02b338a> klist_dec_and_del+0x1a/0x20 <c0220a30> __driver_attach+0x0/0x90 <c0220aa1> __driver_attach+0x71/0x90 <c021fd49> bus_for_each_dev+0x69/0x80 <c0220ae6> driver_attach+0x26/0x30 <c0220a30> __driver_attach+0x0/0x90 <c02202a3> bus_add_driver+0x83/0xc0 <c01dd4ed> __pci_register_driver+0x4d/0x70 <e083903a> sym2_init+0x3a/0x5b [sym53c8xx] <c013a1a0> sys_init_module+0x120/0x1b0 <c0102f27> syscall_call+0x7/0xb Erik -- +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 -- | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
