On Wednesday, September 06, 2006 3:05 PM, Chen, Justin wrote: > > I got a kernel crash after offlined a scsi host when the > kernel boots on > an ia64 box. The crash is seen on the current upstream kernel > (2.6.18-rc6) and several versions of old kernels back. > > Any idea what the problem is? > yes > bsp=e0000700835190a8 > [<a0000001001e77e0>] swiotlb_unmap_sg+0xa0/0x1e0 > sp=e00007008351fd90 > bsp=e000070083519048 > [<a00000010047b970>] mptscsih_search_running_cmds+0x210/0x340 > sp=e00007008351fd90 Looks like it panic'd when pci_unmap_sg() is called. In older kernels we had a similar panic, and we added a scsi_device_online call because midlayer was nulling some of the pointers in the scsi_cmd after itself offlined a device before the lld slave_destroy was called.. This panic occured because there were still outstanding io in fusion. Since I thought that was fix'd, it was recommended by hch and company that we kill the scsi_device_online call. Eric - To unsubscribe from this list: 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
