Bug 160589 – gentoo-sources-2.6.19-r3 - modprobe uhci-hcd FATAL: Error inserting uhci_hcd: Cannot allocate memory

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Safak Oekmen 2007-01-06 23:27:07 UTC]

Trying to geht bluetooth working on my ibm x40: http://www.thinkwiki.org/wiki/How_to_setup_Bluetooth, Second Chapter: Configuring the Kernel. Could not modprobe uhci-hcd.

My configuration:
+++dmesg output:
+++lsmod output:
+++cat /proc/slabinfo output:
+++strace modprobe uhci-hcd output:
+++lspci output:
+++kernel .config output:

Reproducible: Always

Steps to Reproduce:

Actual Results:  
 # modprobe uhci-hcd 
FATAL: Error inserting uhci_hcd (/lib/modules/2.6.18-gentoo-r6/kernel/drivers/usb/host/uhci-hcd.ko): Cannot allocate memory

returned: 1



I will use a ~x86 gentoo-source 2.6.19-r3 HTH

[Comment 1 Safak Oekmen 2007-01-06 23:27:55 UTC]

Created attachment 105723 [details]
dmesg output

[Comment 2 Safak Oekmen 2007-01-06 23:28:34 UTC]

Created attachment 105725 [details]
output .config kernel configuration

[Comment 3 Safak Oekmen 2007-01-06 23:28:55 UTC]

Created attachment 105727 [details]
output lsmod

[Comment 4 Safak Oekmen 2007-01-06 23:29:23 UTC]

Created attachment 105729 [details]
output cat /proc/slabinfo

[Comment 5 Safak Oekmen 2007-01-06 23:30:11 UTC]

Created attachment 105731 [details]
output strace modprobe uhci-hcd

[Comment 6 Safak Oekmen 2007-01-06 23:33:28 UTC]

Created attachment 105733 [details]
output lspci

[Comment 7 Daniel Drake (RETIRED) 2007-01-07 00:17:22 UTC]

You have UHCI built into your kernel *and* you are trying to load it as a module.

[Comment 8 Safak Oekmen 2007-01-07 03:23:57 UTC]

using kernel 2.6.19-r3 module could be loaded.

[Comment 9 Safak Oekmen 2007-01-07 03:25:30 UTC]

Meaning, I merged the new kernel and loaded my old .config. Nothing changed except for the kernel.

(In reply to comment #8)
> using kernel 2.6.19-r3 module could be loaded.
> 

[Comment 10 Daniel Drake (RETIRED) 2007-01-07 03:47:11 UTC]

Please post new dmesg, both before and after you attempt to load the module. Also post the output of "ls -l /usr/src/linux/arch/i386/boot/bzImage"

[Comment 11 Daniel Drake (RETIRED) 2007-01-07 03:51:18 UTC]

Oh wait, misread what you said. So, 2.6.18 failed and 2.6.19 works. Actually it has nothing to do with versions. Here is one way which you can produce this error on any kernel:

Configure kernel with UHCI built-in
Compile kernel bzImage and modules
Install modules
Mount /boot, copy kernel over to /boot
Reboot into new kernel
Tweak kernel configuration to build UHCI as module
FORGET to recompile kernel bzImage, or forget to put in /boot or similar user error
Compile kernel modules
Install modules
Reboot into new kernel (actually this is not new at all, its the same kernel image as previously since you made a mistake earlier)
Attempt to load UHCI module --> boom

You must have done something at least comparable to the above on 2.6.18. You can clearly see in your dmesg logs that uhci is loaded before the root filesystem is even mounted, hence it must be built in.