Greetings,
I reported this for 2.5.67 as well. Repeatable on more than one sort of
i386 machine (P3, K7). Insert USB flash drive, mount drive, unmount
drive, remove USB device, kernel oops. Kernel keeps running, but USB is
dead. Here's the oops from /var/log/kern.log. I have symbol
information in the kernel, which (correct me if I'm wrong!) means I
don't need ksymoops, right?
#####
usb 1-1: USB disconnect, address 3
Unable to handle kernel NULL pointer dereference at virtual address 00000001
printing eip:
c01badd3
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[proc_match+19/64] Not tainted
EFLAGS: 00010286
EIP is at proc_match+0x13/0x40
eax: ffffffff ebx: c1bcd85c ecx: ffffffff edx: c11efdc8
esi: c11efdc8 edi: c1bcd88c ebp: c11efd8c esp: c11efd84
ds: 007b es: 007b ss: 0068
Process khubd (pid: 4, threadinfo=c11ee000 task=c114d320)
Stack: 00000001 c1bcd88c c11efdb4 c01bc3d2 00000001 c11efdc8 ffffffff c11efdb4
c11efdc8 c7e725e0 c11efdc8 c7e721b0 c11efde0 c0337bc2 c11efdc8 c1bcd85c
00000000 c7b20030 c7e721b0 c11efe58 c7e725e0 c7e725e0 c7b20200 c11efe58
Call Trace:
[remove_proc_entry+82/288] remove_proc_entry+0x52/0x120
[scsi_proc_host_rm+66/112] scsi_proc_host_rm+0x42/0x70
[scsi_unregister+253/576] scsi_unregister+0xfd/0x240
[scsi_remove_device+64/80] scsi_remove_device+0x40/0x50
[scsi_remove_device+64/80] scsi_remove_device+0x40/0x50
[storage_disconnect+429/785] storage_disconnect+0x1ad/0x311
[iput+99/144] iput+0x63/0x90
[storage_disconnect+0/785] storage_disconnect+0x0/0x311
[usb_device_remove+156/160] usb_device_remove+0x9c/0xa0
[device_release_driver+102/112] device_release_driver+0x66/0x70
[bus_remove_device+127/208] bus_remove_device+0x7f/0xd0
[device_del+108/176] device_del+0x6c/0xb0
[device_unregister+20/34] device_unregister+0x14/0x22
[usb_disconnect+199/352] usb_disconnect+0xc7/0x160
[usb_hub_port_connect_change+831/848] usb_hub_port_connect_change+0x33f/0x350
[usb_hub_port_status+104/176] usb_hub_port_status+0x68/0xb0
[usb_hub_events+1014/1392] usb_hub_events+0x3f6/0x570
[allow_signal+204/512] allow_signal+0xcc/0x200
[usb_hub_thread+53/240] usb_hub_thread+0x35/0xf0
[default_wake_function+0/32] default_wake_function+0x0/0x20
[usb_hub_thread+0/240] usb_hub_thread+0x0/0xf0
[kernel_thread_helper+5/24] kernel_thread_helper+0x5/0x18
Code: 0f b7 48 02 3b 4d 08 74 14 31 c0 8b 34 24 8b 7c 24 04 89 ec
<3>drivers/usb/host/uhci-hcd.c: 1060: host controller halted. very bad
#####
Chris
-- Christopher S. Swingley email: cswingle@iarc.uaf.edu IARC -- Frontier Program Please use encryption. GPG key at: University of Alaska Fairbanks www.frontier.iarc.uaf.edu/~cswingle/- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:15 EST