Red Hat Bugzilla – Bug 145197
Funny Hang - audio module doesn't like usb-storage devices!
Last modified: 2015-01-04 17:15:38 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (compatible; Konqueror/3.3; Linux) (KHTML, like Gecko) Description of problem: I am running FC3 on a AMD64 laptop. The laptop has 3 USB ports. If I attach any usb-storage device (Sandisk Cruiser usb drive, iPod, Maxtor external drive etc.) the kernel hangs while booting. The hang occurs when rc.sysinit loads the audio modules. The machine does not respond to anything other than the power button. The boot goes on fine if there are no usb-storage devices attached to the system. Version-Release number of selected component (if applicable): 2.6.10-1.741_FC3 How reproducible: Always Steps to Reproduce: 1. Attach any usb-storage device to any USB port 2. Start the laptop 3. Watch it hang completely while loading audio module. (Initializing hardware .. storage network audio_ -- here is where it hangs.) Actual Results: Should not have hanged while booting Expected Results: Machine locks up hard. Additional info:
Created attachment 109809 [details] modprobe.conf modprobe.conf file from affected machine
Created attachment 109810 [details] /proc/interrupts
Created attachment 109811 [details] lsmod output
Update : It doesn't actually hang forever - after about being stuck for a minute or so, the boot resumes normally. When it is hung the usb storage devices are not being accessed - the iPOD for e.g does not show the Do not Disconnect sign when it is hung - it shows that after the boot resumes. Might have something to do with the recent "Waiting for device to settle" change in usb-storage? I think this one minute hang is still a bug.
Happens on x86 kernels as well. Changing platform to X86 in a hope that someone will now notice the bug :)
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which may contain a fix for your problem. Please update to this new kernel, and report whether or not it fixes your problem. If you have updated to Fedora Core 4 since this bug was opened, and the problem still occurs with the latest updates for that release, please change the version field of this bug to 'fc4'. Thank you.
This hang is caused by load of ohci_hcd module - it hangs the machine if USB Storage device is attached. Hang happens in pci_enable_device(). See reference to Kernel bugzilla.
Closing - Automagically fixed somewhere in 2.6.15-rc series.