Crash report on amd64, intel hda

Distribution slamd64-12.0, processor AMD-Turion-X2,
sound ati-Azalia with driver snd-hda-itel - patched
sigmatel.patch.
My system completely hangs every time when i try to do
recursive copy with "scp -r" after copy 2-3 files.
What cause this and can it be avoided ?

Oct 27 02:59:46 d kernel: general protection fault:
0000 [1] SMP 
Oct 27 02:59:46 d kernel: CPU 1 
Oct 27 02:59:46 d kernel: Modules linked in:
ppp_deflate bsd_comp ppp_async crc_ccitt ppp_generic
slhc usb_storage ipv6 vfat fat ide_scsi hsfhda(F)
hsfserial hsfengine(P) hsfosspec usbhid ata_generic
fglrx(P) snd_hda_intel i2c_piix4 snd_hda_codec shpchp
i2c_core serio_raw rtc_cmos sg rtc_core k8temp
ehci_hcd rtc_lib hwmon pata_atiixp joydev ohci_hcd
evdev pcspkr
Oct 27 02:59:46 d kernel: Pid: 2183, comm: khsfd/modem
Tainted: PF      2.6.22.8 #10
Oct 27 02:59:46 d kernel: RIP:
0010:[<ffffffff881ebb52>]  [<ffffffff881ebb52>]
:hsfengine:hsfengine2084_+0x32/0x180
Oct 27 02:59:46 d kernel: RSP: 0018:ffff8100794f5de0 
EFLAGS: 00010086
Oct 27 02:59:46 d kernel: RAX: 0000000000000000 RBX:
f000ec62f000e2c3 RCX: 0000000000000004
Oct 27 02:59:46 d kernel: RDX: 0000000000000000 RSI:
0000000000020004 RDI: f000ec62f000e2c3
Oct 27 02:59:46 d kernel: RBP: ffff810079d89000 R08:
0000000000000001 R09: 0000000000000000
Oct 27 02:59:46 d kernel: R10: 0000000000000001 R11:
0000000000000000 R12: 0000000000020004
Oct 27 02:59:46 d kernel: R13: 0000000000000000 R14:
0000000000000000 R15: ffff8100794f5ea7
Oct 27 02:59:46 d kernel: FS:  00002aed22ab76f0(0000)
GS:ffff81007be0aec0(0000) knlGS:00000000f7dcc6c0
Oct 27 02:59:46 d kernel: CS:  0010 DS: 0000 ES: 0000
CR0: 000000008005003b
Oct 27 02:59:46 d kernel: CR2: 00002b04f6f70488 CR3:
000000005f47f000 CR4: 00000000000006e0
Oct 27 02:59:46 d kernel: Process khsfd/modem (pid:
2183, threadinfo ffff8100794f4000, task
ffff81007947b7d0)
Oct 27 02:59:46 d kernel: Stack:  0000000000000001
ffff810079d89000 ffff810079d89000 0000000000000001
Oct 27 02:59:46 d kernel:  0000000000000001
ffffffff881efc81 000000000000005c ffff810079d89000
Oct 27 02:59:46 d kernel:  ffff8100794f5ea7
0000000000000001 0000000000000001 ffffffff881ee747
Oct 27 02:59:46 d kernel: Call Trace:
Oct 27 02:59:46 d kernel:  [<ffffffff881efc81>]
:hsfengine:hsfengine1973_+0x41/0x50
Oct 27 02:59:46 d kernel:  [<ffffffff881ee747>]
:hsfengine:hsfengine52_+0xa7/0x140
Oct 27 02:59:46 d kernel:  [<ffffffff8834c1a5>]
:hsfserial:cnxt_intr+0x365/0x480
Oct 27 02:59:46 d kernel:  [<ffffffff881a2ea6>]
:hsfosspec:cnxt_thread+0x1c6/0x240
Oct 27 02:59:46 d kernel:  [<ffffffff8022f340>]
default_wake_function+0x0/0x10
Oct 27 02:59:46 d kernel:  [<ffffffff8020a8e8>]
child_rip+0xa/0x12
Oct 27 02:59:46 d kernel:  [<ffffffff881a2ce0>]
:hsfosspec:cnxt_thread+0x0/0x240
Oct 27 02:59:46 d kernel:  [<ffffffff8020a8de>]
child_rip+0x0/0x12
Oct 27 02:59:46 d kernel: 
Oct 27 02:59:46 d kernel: 
Oct 27 02:59:46 d kernel: Code: 48 8b 6f 08 48 89 ef
e8 12 f9 ff ff ba 01 00 00 00 85 c0 75 
Oct 27 02:59:46 d kernel: RIP  [<ffffffff881ebb52>]
:hsfengine:hsfengine2084_+0x32/0x180
Oct 27 02:59:46 d kernel:  RSP <ffff8100794f5de0>

Handre.

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