Linux Kernel 2.6 SMP+HT + 1 Intel P4 HT CPU

[Justin Piszcz]

Why would you use SMP on an HT cpu?
Is this reccomended?

>
>
> -----Original Message-----
> From: linux-kernel-owner@xxxxxxxxxxxxxxx
> [mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] On Behalf Of Alberto
> Bertogli
> Sent: Thursday, May 13, 2004 8:42 PM
> To: linux-usb-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Subject: BUG when removing USB flash drive
>
> Hi!
>
> I've just hit a bug after removing a Kingston USB flash drive.
>
> I have removed it several (probably more than 40) times today without
> problems until now. I'm removing it while doing streaming write()s on
> the device (using /dev/sda) because I'm testing some things with the
> drive. This was just like all the other times, so it looks like a race
> somewhere.
>
> This is a stock 2.6.6 kernel, on a Pentium 4 with HT (the kernel is
> compiled with both SMP and preempt).
>
> After the BUG the kernel doesn't detect the device anymore.
>
> Please let me know if you need any more information or if I can give you
> a
> hand with testing.
>
> Thanks a lot,
> 		Alberto
>
>
> kernel BUG at drivers/usb/storage/usb.c:848!
> invalid operand: 0000 [#1]
> PREEMPT SMP
> CPU:    1
> EIP:    0060:[<c030843c>]    Not tainted
> EFLAGS: 00010202   (2.6.6)
> EIP is at usb_stor_release_resources+0xa3/0xcd
> eax: 00002832   ebx: c639e200   ecx: c04bd768   edx: debf2888
> esi: c04c6780   edi: c308ac00   ebp: c308ac24   esp: dededeb0
> ds: 007b   es: 007b   ss: 0068
> Process khubd (pid: 10, threadinfo=dedec000 task=dedef770)
> Stack: debf2888 debf2854 c02e9f48 c639e200 debf2854 de40a670 debf2864
> c04c67a0
>        c0272926 debf2864 debf288c debf2864 c308acd0 c0272a4d debf2864
> debf28bc
>        debf2864 c308acd0 c0271b06 debf2864 debf2864 c308ac00 c0271b57
> debf2864
> Call Trace:
>  [<c02e9f48>] usb_unbind_interface+0x7a/0x7c
>  [<c0272926>] device_release_driver+0x64/0x66
>  [<c0272a4d>] bus_remove_device+0x56/0x98
>  [<c0271b06>] device_del+0x5f/0x9d
>  [<c0271b57>] device_unregister+0x13/0x23
>  [<c02eff98>] usb_disable_device+0x71/0xac
>  [<c02eaa32>] usb_disconnect+0x9c/0xeb
>  [<c02ecb1d>] hub_port_connect_change+0x274/0x279
>  [<c02ec509>] hub_port_status+0x45/0xb0
>  [<c02ece0b>] hub_events+0x2e9/0x364
>  [<c02eceb3>] hub_thread+0x2d/0xe8
>  [<c0105f86>] ret_from_fork+0x6/0x14
>  [<c011a3a1>] default_wake_function+0x0/0x12
>  [<c02ece86>] hub_thread+0x0/0xe8
>  [<c0104271>] kernel_thread_helper+0x5/0xb
>
> Code: 0f 0b 50 03 05 a6 43 c0 e9 7c ff ff ff c7 80 e0 01 00 00 00
>
>
> Five seconds later, this comes out:
>
>  <1>Unable to handle kernel paging request at virtual address 31a875c8
>  printing eip:
> c0307b2b
> *pde = 00000000
> Oops: 0002 [#2]
> PREEMPT SMP
> CPU:    0
> EIP:    0060:[<c0307b2b>]    Not tainted
> EFLAGS: 00010002   (2.6.6)
> EIP is at usb_stor_control_thread+0x14d/0x2c9
> eax: 31a875c8   ebx: c639e200   ecx: c639e200   edx: 00002003
> esi: c639e600   edi: d3c84000   ebp: d3c84000   esp: d3c85f9c
> ds: 007b   es: 007b   ss: 0068
> Process usb-storage (pid: 10290, threadinfo=d3c84000 task=c76b0130)
> Stack: dec00800 c639e200 c76b0698 c639e310 c639e324 c76b0130 c13e5ca0
> dededda8
>        c0105f86 dedef770 c03079de 00000000 c639e200 00000000 00000000
> 00000000
>        00000000 c03079de 00000000 00000000 00000000 c0104271 c639e200
> 00000000
> Call Trace:
>  [<c0105f86>] ret_from_fork+0x6/0x14
>  [<c03079de>] usb_stor_control_thread+0x0/0x2c9
>  [<c03079de>] usb_stor_control_thread+0x0/0x2c9
>  [<c0104271>] kernel_thread_helper+0x5/0xb
>
> Code: f0 fe 08 0f 88 38 0b 00 00 8b 83 b8 00 00 00 81 b8 50 01 00
>  <6>note: usb-storage[10290] exited with preempt_count 1
>
>
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel"
> in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/