2.6.19 lot's of oops in mmx_copy_page/ mmx_clear_page functions

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Hi,

with 2.6.19 I got some random crash and I got kernel opps.
There all happens in mmx_copy_page/ mmx_clear_page functions with differents process : Xorg, cat, mozilla, ... 


What could be the cause of these crashes ?
What can I provide in order to debug this ?


Thanks

Matthieu CASTET



BUG: unable to handle kernel paging request at virtual address fffb9000
 printing eip:
c01be1bd
*pde = 00002067
Oops: 0000 [#1]
PREEMPT
Modules linked in: michael_mic arc4 ecb ieee80211_crypt_tkip ehci_hcd videodev v4l1_compat v4l2_common nfs nfsd exportfs lockd sunrpc sd_mod sg sr_mod ppdev lp autofs4 button processor ipt_TOS ipt_MASQUERADE ipt_ULOG ipt_LOG xt_tcpudp xt_state ipt_REJECT ipt_iprange xt_conntrack iptable_mangle ip_nat_irc ip_nat_ftp iptable_nat ip_nat ip_conntrack_irc ip_conntrack_ftp ip_conntrack iptable_filter ip_tables x_tables ide_cd cdrom pcspkr snd_mpu401 ns558 parport_pc parport 8250_pnp 8250 serial_core floppy snd_via82xx snd_mpu401_uart emu10k1_gp gameport snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul snd_seq_oss snd_seq_midi snd_seq_midi_event snd_seq snd_emu10k1 snd_rawmidi snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_device snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore mii zd1211rw firmware_class ieee80211softmac ieee80211 ieee80211_crypt via_agp agpgart clip atm nls_iso8859_1 nls_cp437 vfat fat nls_base reiserfs w83627hf hwmon_vid i2c_isa i2c_core evdev rtc 
CPU:    0
EIP:    0060:[<c01be1bd>]    Not tainted VLI
EFLAGS: 00010246   (2.6.19 #1)
EIP is at mmx_copy_page+0x51/0x123
eax: fffb9000   ebx: e2db9000   ecx: 00000000   edx: e2db9000
esi: fffb9000   edi: e2db9000   ebp: c17e6040   esp: f671defc
ds: 007b   es: 007b   ss: 0068
Process automount (pid: 11921, ti=f671c000 task=f7cf0050 task.ti=f671c000)
Stack: fffb9000 eb216040 c0140045 8001003c f5c95e40 f4ee2abc c145b720 00000000 3f302065 f4ee2afc eb216040 f5c95e40 c014145f eb216040 f4f8a800 f4ee2afc 3f302065 393b4393 8001003c f4ee2abc 00000040 f4f8a800 00000000 f671df94 
Call Trace:
 [<c0140045>] do_wp_page+0x291/0x414
 [<c014145f>] __handle_mm_fault+0x7d2/0x873
 [<c0112593>] do_page_fault+0x213/0x4dc
 [<c0112380>] do_page_fault+0x0/0x4dc
 [<c02a01e1>] error_code+0x39/0x40
 =======================
Code: f4 ff 0f 0d 06 0f 0d 46 40 0f 0d 86 80 00 00 00 0f 0d 86 c0 00 00 00 0f 0d 86 00 01 00 00 31 c9 89 fa 89 f0 0f 0d 80 40 01 00 00 <0f> 6f 00 0f e7 02 0f 6f 48 08 0f e7 4a 08 0f 6f 50 10 0f e7 52 
EIP: [<c01be1bd>] mmx_copy_page+0x51/0x123 SS:ESP 0068:f671defc
 <6>note: automount[11921] exited with preempt_count 3



Sumary of Others failures :
/var/log/syslog:Dec 10 10:40:14 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9b20 /var/log/syslog:Dec 10 10:40:14 localhost kernel: EIP is at mmx_clear_page+0x38/0x7e /var/log/syslog:Dec 10 10:40:14 localhost kernel: Process iceape-bin (pid: 7061, ti=f7410000 task=eeb5a070 task.ti=f7410000) /var/log/syslog:Dec 10 10:40:14 localhost kernel: EIP: [<c01be406>] mmx_clear_page+0x38/0x7e SS:ESP 0068:f7411eb0 /var/log/syslog:Dec 10 10:40:24 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9a60 /var/log/syslog:Dec 10 10:40:24 localhost kernel: EIP is at mmx_clear_page+0x38/0x7e /var/log/syslog:Dec 10 10:40:24 localhost kernel: Process cc1 (pid: 21797, ti=d62ea000 task=e86eb070 task.ti=d62ea000) /var/log/syslog:Dec 10 10:40:24 localhost kernel: EIP: [<c01be406>] mmx_clear_page+0x38/0x7e SS:ESP 0068:d62ebeb0 /var/log/syslog:Dec 10 11:12:37 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9000 /var/log/syslog:Dec 10 11:12:37 localhost kernel: EIP is at mmx_copy_page+0x51/0x123 /var/log/syslog:Dec 10 11:12:37 localhost kernel: Process automount (pid: 11921, ti=f671c000 task=f7cf0050 task.ti=f671c000) /var/log/syslog:Dec 10 11:12:37 localhost kernel: EIP: [<c01be1bd>] mmx_copy_page+0x51/0x123 SS:ESP 0068:f671defc /var/log/syslog.0:Dec 9 19:21:50 localhost kernel: Process modprobe (pid: 20516, ti=ee3d8000 task=f649f580 task.ti=ee3d8000) /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9000 /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: EIP is at mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: Process Xorg (pid: 9479, ti=d4ae0000 task=f671ca90 task.ti=d4ae0000) /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: EIP: [<c01be3f7>] mmx_clear_page+0x29/0x7e SS:ESP 0068:d4ae1eb0 /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: [<c01be3f7>] mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 9 22:15:15 localhost kernel: [<c01be3f7>] mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9340 /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: EIP is at mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: Process Xorg (pid: 10450, ti=c758e000 task=d42fa030 task.ti=c758e000) /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: EIP: [<c01be3f7>] mmx_clear_page+0x29/0x7e SS:ESP 0068:c758feb0 /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: [<c01be3f7>] mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 10 00:06:31 localhost kernel: [<c01be3f7>] mmx_clear_page+0x29/0x7e /var/log/syslog.0:Dec 10 10:23:00 localhost kernel: BUG: unable to handle kernel paging request at virtual address fffb9000 /var/log/syslog.0:Dec 10 10:23:00 localhost kernel: EIP is at mmx_copy_page+0x51/0x123 /var/log/syslog.0:Dec 10 10:23:00 localhost kernel: Process cat (pid: 8977, ti=db79c000 task=df987030 task.ti=db79c000) /var/log/syslog.0:Dec 10 10:23:00 localhost kernel: EIP: [<c01be1bd>] mmx_copy_page+0x51/0x123 SS:ESP 0068:db79ddc8 
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