Hi David, hi lists!
(Taking Andrew and Dmitry off private email, this concerns only usb I
guess)
On Mon, 02 Aug 2004, preining wrote:
> > > - USB deadlocking
> > > USB is still deadlocky, quite often process hang in D+ state.
> >
> > So what does alt-sysrq-t show you about those processes?
Ok, I turned off hotplug, started it by hand and found what is making
the troubles:
First, it is cups, when trying the backend usb/canon/epson accessing the
usb subsystem. So I turned this of.
Then I tried lsusb, which hang, here is what sysrq-t says:
lsusb D C0158CDC 0 3942 3849 (NOTLB)
d648cef4 00200086 c1621800 c0158cdc 00000000 08088000 d39ce300 00000001
6e50f578 00000028 d427a7f4 df4cf824 00200296 d648c000 d427a650 c02d3f5f
df4cf82c 00000001 d427a650 c0118cf9 df4cf82c df4cf82c d687fd40 e08e0798
Call Trace:
[<c0158cdc>] link_path_walk+0xa1f/0xd4e
[<c02d3f5f>] __down+0x8b/0x116
[<c0118cf9>] default_wake_function+0x0/0xc
[<e08e0798>] usbdev_open+0x54/0xfa [usbcore]
[<c02d4144>] __down_failed+0x8/0xc
[<e08e26ba>] .text.lock.devio+0x5/0xff [usbcore]
[<c014ba8b>] filp_open+0x4c/0x4e
[<c014c62d>] vfs_read+0xa9/0xf5
[<c014c846>] sys_read+0x38/0x59
[<c0105e4f>] syscall_call+0x7/0xb
Does this help you. lsusb is in D+ state.
SOmething similar happened when I tried to remove usbhid, or anything
else related to usb.
Best wishes
Norbert
-------------------------------------------------------------------------------
Norbert Preining <preining AT logic DOT at> Technische Universität Wien
gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
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