From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugme-daemon@bugzilla.kernel.org
Subject: [Bug 11898] mke2fs hang on AIC79 device.
Date: Thu, 30 Oct 2008 07:06:05 -0700 (PDT)
Message-ID: <20081030140605.DEF73108056@picon.linux-foundation.org>
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http://bugzilla.kernel.org/show_bug.cgi?id=11898
------- Comment #3 from anonymous@kernel-bugs.osdl.org 2008-10-30 07:06 -------
Reply-To: James.Bottomley@HansenPartnership.com
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:
[] ? scsi_request_fn+0x31a/0x416
[] ? blk_invoke_request_fn+0x79/0x11d
[] ? __blk_run_queue+0x2a/0x2e
[] ? scsi_run_queue+0x2cd/0x2e4
[] ? scsi_next_command+0x3b/0x4c
[] ? scsi_end_request+0x97/0xa9
[] ? scsi_io_completion+0x190/0x3a8
[] ? scsi_finish_command+0xb6/0xbf
[] ? scsi_softirq_done+0x101/0x109
[] ? blk_done_softirq+0x68/0x79
[] ? __do_softirq+0x86/0x14f
[] ? call_softirq+0x1c/0x28
[] ? do_softirq+0x39/0x77
[] ? irq_exit+0x44/0x46
[] ? do_IRQ+0xc8/0xe8
[] ? ret_from_intr+0x0/0xa
[] ? mwait_idle+0x4a/0x4f
[] ? enter_idle+0x27/0x29
[] ? cpu_idle+0x45/0x63
[] ? 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
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