Bug 374825 – ksoftirqd: kernel panic: fatal exception in interrupt: crash if i plug a usb stick sometimes, always when plugged through a usb hub, sometimes also at boot time.

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description kharhonte 2011-07-11 10:16:17 UTC]

Always happens when i plug a usb stick through the usb hub.

Often it happens when i boot Fedora first, so i boot Gentoo and i get the panic.

Happened once when i plugged a usb stick in the motherboard front port.

Don't know if related but once happened also at boot time after the message "/dev already mounted" and before starting udevd but with a different message: "BUG: unable to handle kernel NULL pointer dereference at 00000000....040 et cetera. As usual: comm:ksoftirqd/1 Not tainted....

Full messages in the attached file (shoot with a camera).

Reproducible: Always

Steps to Reproduce:
1.Plug usb stick in usb hub
1a.Reboot from Fedora
1b.Plug usb stick
Actual Results:  
Kernel panic[...]Pid: X, comm: ksoftirqd/Y Tainted/Not tainted G    D C 2.6.38-gentoo-r6-unosd #Z (System manufacturer System Product Name/M4A88TD-V EVO/USB3

Expected Results:  
Don't panic!

Hw:
Athlon II X4 640
4GB RAM DDR2
Motherboard ASUS M4A88TD-V EVO/USB3

Attached jpg log, kernel's .config.

[Comment 1 kharhonte 2011-07-11 10:22:40 UTC]

Created attachment 279755 [details]
First time, at boot, after rebooting from Fedora

[Comment 2 kharhonte 2011-07-11 10:23:25 UTC]

Created attachment 279757 [details]
Second time, at boot, before udevd.

[Comment 3 kharhonte 2011-07-11 10:24:02 UTC]

Created attachment 279759 [details]
Third time, after plugging usb stick in front motherboard port.

[Comment 4 kharhonte 2011-07-11 10:24:50 UTC]

Created attachment 279761 [details]
My kernel configuration

[Comment 5 Pacho Ramos 2011-07-11 11:49:11 UTC]

Have you tried with latest 2.6.39 kernel available in testing?

[Comment 6 kharhonte 2011-07-11 11:53:19 UTC]

(In reply to comment #5)
> Have you tried with latest 2.6.39 kernel available in testing?

Not yet. But i do prefer stable kernel. (Even if that's not the case with mine)
Could it be possible that i solve this problem but i get some other panic (and so data loss)?

[Comment 7 Pacho Ramos 2011-07-11 13:17:48 UTC]

I think would be better to check with latest kernel as it is probably an upstream issue that is more probably fixed in 2.6.39

[Comment 8 kharhonte 2011-07-11 15:16:27 UTC]

(In reply to comment #7)
> I think would be better to check with latest kernel as it is probably an
> upstream issue that is more probably fixed in 2.6.39

I'll try in a few hours.

[Comment 9 kharhonte 2011-07-11 16:04:00 UTC]

Just tried the 2.6.39-gentoo-r1, same problem.

I've also understood that it "panic" the second time i plug the device; so i think it's an address (irq) problem, probably it try to assign the same address again or something similar. (Sorry, i'm a little bit ignorant about that think...)

[Comment 10 Pacho Ramos 2011-07-12 09:40:29 UTC]

Then, provide "dmesg" output and kernel config for 2.6.39 kernel, thanks

[Comment 11 kharhonte 2011-07-12 11:32:05 UTC]

Can't provide dmesg because of the panic... You can look at the attached jpeg.

The .config it's the same as the 2.6.38

[Comment 12 kharhonte 2011-07-29 12:55:12 UTC]

Fixed enabling kernel's CONFIG_USB_SUSPEND.