Oliver Neukum([EMAIL PROTECTED]) recommended me to contact you
Original message was:
I have 2.6.15.2 kernel.
The connection was working fine, but then modem (it's my mobile phone, i'm
using cdc-acm) rebooted suddenly. There were diffirent results in these cases.
First time dmesg said:
usb 3-1: USB disconnect, address 4
drivers/usb/class/cdc-acm.c: acm_ctrl_irq - usb_submit_urb failed with result
-19
But next time oops occured and dmesg said:
Unable to handle kernel NULL pointer dereference at virtual address 0000000c
printing eip:
c0197af4
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: ppdev ipv6 ppp_async crc_ccitt ppp_generic slhc floppy udf
nls_koi8_r isofs zlib_inflate snd_rtctimer vmnet vmmon fglrx raw snd_es1938
snd_opl3_lib snd_hwdep snd_mpu401_uart snd_rawmidi snd_pcm_oss snd_mixer_oss
snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm snd_page_alloc parport_pc lp
parport usblp iptable_filter ip_tables af_packet w83627hf hwmon_vid eeprom
i2c_isa i2c_sis96x ide_cd cdrom loop reiser4 supermount snd_seq_oss
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore evdev joydev
analog ns558 gameport sis_agp agpgart cdc_acm ehci_hcd ohci_hcd usbcore
container
CPU: 0
EIP: 0060:[<c0197af4>] Tainted: P VLI
EFLAGS: 00010246 (2.6.15-ck3)
EIP is at sysfs_hash_and_remove+0x43/0x123
eax: 00000000 ebx: c16f1b78 ecx: 00000000 edx: daf82000
esi: 00000000 edi: dffeb4e4 ebp: dffeb480 esp: daf83e18
ds: 007b es: 007b ss: 0068
Process pppd (pid: 19202, threadinfo=daf82000 task=cac89030)
Stack: dffe7900 d09df5c4 d4ece688 d4ece680 dffeb4e4 dffeb480 c025e98a d544aee8
c9b84ae0 c9b84ae0 00000000 d4ece680 00000000 e086b5f8 de3ed980 c025e99f
d4ece680 d5cab480 e086b5ae d4ece680 0a600000 d5cab480 e086b6af d5cab480
Call Trace:
[<c025e98a>] class_device_del+0x11e/0x123
[<e086b5f8>] acm_tty_close+0x0/0xb9 [cdc_acm]
[<c025e99f>] class_device_unregister+0x10/0x1d
[<e086b5ae>] acm_tty_unregister+0x1f/0x69 [cdc_acm]
[<e086b6af>] acm_tty_close+0xb7/0xb9 [cdc_acm]
[<c023ec9e>] release_dev+0x681/0x7ba
[<c016f8cd>] __posix_lock_file+0x2b0/0x639
[<c0170de4>] fcntl_setlk+0x2a0/0x358
[<e199c5bd>] ppp_ccp_closed+0x6e/0xe5 [ppp_generic]
[<c0171d90>] dput+0x5d/0x1ce
[<c023f294>] tty_release+0xf/0x15
[<c015c1b0>] [EMAIL PROTECTED]/0x17d
[<c015a7b7>] filp_close+0x46/0x87
[<c015a84b>] sys_close+0x53/0x69
[<c0102e57>] sysenter_past_esp+0x54/0x75
Code: 58 08 8b 70 50 85 db 75 14 8b 5c 24 08 8b 74 24 0c 8b 7c 24 10 8b 6c 24
14 83 c4 18 c3 e8 78 75 15 00 ff 4b 70 0f 88 e0 00 00 00 <8b> 56 0c 8d 6a fc 8b
45 04 0f 18 00 90 8d 5e 0c eb 0f 8b 55 04
<6>usb 3-1: new full speed USB device using ohci_hcd and address 8
cdc_acm 3-1:1.0: ttyACM1: USB ACM device
usb 3-1: USB disconnect, address 8
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