On Thu, 2008-10-30 at 18:22 +0800, Shi, Alex wrote: > New panic output is attached after adding softlockup. New found: > 1, "strace mke2fs /dev/sdb1" works well. it just show many write(3, "\377\377...", 4096) =4096 .... > 2, when system hang, ping this machine is workable. And keyboard input works but cmd has no output. This doesn't entirely implicate the aic79xx. The trace shows: <IRQ> [<ffffffff803f99eb>] ? scsi_request_fn+0x31a/0x416 [<ffffffff803435ad>] ? blk_invoke_request_fn+0x79/0x11d [<ffffffff80343b21>] ? __blk_run_queue+0x2a/0x2e [<ffffffff803f7def>] ? scsi_run_queue+0x2cd/0x2e4 [<ffffffff803f8452>] ? scsi_next_command+0x3b/0x4c [<ffffffff803f86ef>] ? scsi_end_request+0x97/0xa9 [<ffffffff803f93b0>] ? scsi_io_completion+0x190/0x3a8 [<ffffffff803f3a9f>] ? scsi_finish_command+0xb6/0xbf [<ffffffff803f96c9>] ? scsi_softirq_done+0x101/0x109 [<ffffffff803476df>] ? blk_done_softirq+0x68/0x79 [<ffffffff8023de8c>] ? __do_softirq+0x86/0x14f [<ffffffff8020c63c>] ? call_softirq+0x1c/0x28 [<ffffffff8020dd82>] ? do_softirq+0x39/0x77 [<ffffffff8023de04>] ? irq_exit+0x44/0x46 [<ffffffff8020de88>] ? do_IRQ+0xc8/0xe8 [<ffffffff8020b8f6>] ? ret_from_intr+0x0/0xa <EOI> [<ffffffff8021299b>] ? mwait_idle+0x4a/0x4f [<ffffffff80209c82>] ? enter_idle+0x27/0x29 [<ffffffff8020a198>] ? cpu_idle+0x45/0x63 [<ffffffff804e4d50>] ? start_secondary+0x179/0x17d So we locked up somehow in the mid-layer trying to feed a new command from the softirq. It would greatly help to know what line in scsi_lib.c scsi_request_fn+0x31a/0x416 The trace implies SCSI is built in, so addr2line -e vmlinux -f scsi_request_fn+0x31a Should tell us (hoping you build with CONFIG_DEBUG_INFO). James -- 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
