Arch Linux

ninian

Member

From: United Kingdom

Registered: 2008-02-24

Posts: 726

Website

Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

I have two machines with Intel 536EP PCI modem cards, running fully updated Arch with the appropriate driver packages installed:

intel-536ep 2.56.76.0-59
intel-536ep-utils 2.56.76.0-28

Up until some time last week, they worked fine with my usual couple of dialup ISPs, so there is no handshaking configuration problem. But now, after routinely upgrading Arch, I find that:

PC#1: gnome-ppp dials up and accesses the ISP okay, but when I disconnect and try to reconnect again, the log says: "Cannot open /dev/modem: No such file or directory". This can only be recovered by rebooting.
Plus, on one occasion after disconnecting, a couple of routine commands (like 'find') starting producing seg faults in the console! When I shutdown, there is a message just before power-off: "hamregistry: packet 1 unknown"

PC#2: gnome-ppp dials up and starts to access the ISP, but the connection suddenly fails (no, it's not caused by not having the NOAUTH option in /etc/ppp/options!). Then I get the same problems as PC#1 when I try to reconnect and shutdown.

Does any kind soul have a handle on this problem? (Will advise intel-536ep package maintainer anyway.)

tpowa

Developer

From: Lauingen , Germany

Registered: 2004-04-05

Posts: 2,322

Re: Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

http://bugs.archlinux.org/task/12909
perhaps related, but i can't test it anymore i don't have the hardware anymore.

ninian

Member

From: United Kingdom

Registered: 2008-02-24

Posts: 726

Website

Re: Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

http://bugs.archlinux.org/task/12909
perhaps related

Aaaah, very possibly or even probably!
Here's what I found in my everything.log:

Feb  1 12:04:38 ivor pppd[9494]: pppd 2.4.4 started by ivor, uid 1000
Feb  1 12:04:38 ivor pppd[9494]: Using interface ppp0
Feb  1 12:04:38 ivor pppd[9494]: Connect: ppp0 <--> /dev/536ep0
Feb  1 12:04:38 ivor pppd[9494]: Warning - secret file /etc/ppp/pap-secrets has world and/or group access
Feb  1 12:04:39 ivor nmbd[4599]: [2009/02/01 12:04:39,  0] nmbd/nmbd.c:reload_interfaces(285)
Feb  1 12:04:39 ivor nmbd[4599]:   reload_interfaces: No subnets to listen to. Waiting..
Feb  1 12:04:39 ivor eth0: no IPv6 routers present
Feb  1 12:04:41 ivor pppd[9494]: Warning - secret file /etc/ppp/chap-secrets has world and/or group access
Feb  1 12:04:41 ivor pppd[9494]: CHAP authentication succeeded
Feb  1 12:04:41 ivor pppd[9494]: CHAP authentication succeeded
Feb  1 12:04:41 ivor PPP BSD Compression module registered
Feb  1 12:04:41 ivor PPP Deflate Compression module registered
Feb  1 12:04:42 ivor pppd[9494]: Cannot determine ethernet address for proxy ARP
Feb  1 12:04:42 ivor pppd[9494]: local  IP address 213.120.4.110
Feb  1 12:04:42 ivor pppd[9494]: remote IP address 213.120.208.142
Feb  1 12:04:42 ivor pppd[9494]: primary   DNS address 194.72.9.34
Feb  1 12:04:42 ivor pppd[9494]: secondary DNS address 194.74.65.68
Feb  1 12:05:50 ivor pppd[9494]: Terminating on signal 15
Feb  1 12:05:50 ivor pppd[9494]: Connect time 1.2 minutes.
Feb  1 12:05:50 ivor pppd[9494]: Sent 22472 bytes, received 142200 bytes.
Feb  1 12:05:56 ivor ------------[ cut here ]------------
Feb  1 12:05:56 ivor kernel BUG at mm/slub.c:2743!
Feb  1 12:05:56 ivor invalid opcode: 0000 [#1] PREEMPT SMP 
Feb  1 12:05:56 ivor last sysfs file: /sys/class/net/eth0/carrier
Feb  1 12:05:56 ivor Modules linked in: ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async crc_ccitt ipv6 iptable_nat xt_limit xt_tcpudp iptable_mangle ipt_LOG ipt_MASQUERADE nf_nat xt_DSCP ipt_REJECT nf_conntrack_irc nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables vboxnetflt ndiswrapper usbhid hid ppdev e100 psmouse lp pcspkr serio_raw nvidia(P) ohci_hcd eepro100 i2c_core parport_pc parport uhci_hcd iTCO_wdt iTCO_vendor_support sg intel_agp shpchp pci_hotplug agpgart evdev thermal processor fan button battery ac vboxdrv ppp_generic Intel536 loop floppy fuse snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_pcm snd_timer snd_page_alloc snd_mixer_oss snd soundcore ac97_bus slhc 3c59x mii rtc_cmos rtc_core rtc_lib ext3 jbd mbcache ehci_hcd usbcore sr_mod cdrom sd_mod ata_piix ata_generic pata_acpi libata scsi_mod
Feb  1 12:05:56 ivor 
Feb  1 12:05:56 ivor Pid: 9278, comm: wvdial Tainted: P        W  (2.6.28-ARCH #1) Evo D500
Feb  1 12:05:56 ivor EIP: 0060:[<c018efaa>] EFLAGS: 00210246 CPU: 0
Feb  1 12:05:56 ivor EIP is at kfree+0xda/0xe0
Feb  1 12:05:56 ivor EAX: 00000000 EBX: e18ceae0 ECX: c13f7e18 EDX: c14319c0
Feb  1 12:05:56 ivor ESI: c025e900 EDI: e18ceae0 EBP: cc832500 ESP: cc86de88
Feb  1 12:05:56 ivor DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb  1 12:05:56 ivor Process wvdial (pid: 9278, ti=cc86c000 task=d8264c00 task.ti=cc86c000)
Feb  1 12:05:56 ivor Stack:
Feb  1 12:05:56 ivor cc832500 df017f10 e18ceae4 c025e900 e18ceae0 cc832500 c020b4ea cc837000
Feb  1 12:05:56 ivor cc837004 c0260e58 cc837004 c0260e20 00000000 c020b4ea cc837000 00000000
Feb  1 12:05:56 ivor c0260cd0 c026411d e1802bc0 cc832500 00000000 cc837114 cc837108 00000114
Feb  1 12:05:56 ivor Call Trace:
Feb  1 12:05:56 ivor [<c025e900>] destruct_tty_driver+0x0/0xa0
Feb  1 12:05:56 ivor [<c020b4ea>] kref_put+0x2a/0x60
Feb  1 12:05:56 ivor [<c0260e58>] release_one_tty+0x38/0xa0
Feb  1 12:05:56 ivor [<c0260e20>] release_one_tty+0x0/0xa0
Feb  1 12:05:56 ivor [<c020b4ea>] kref_put+0x2a/0x60
Feb  1 12:05:56 ivor [<c0260cd0>] tty_release_dev+0x400/0x510
Feb  1 12:05:56 ivor [<c026411d>] tty_perform_flush+0x6d/0xd0
Feb  1 12:05:56 ivor [<e1802bc0>] softserial_ioctl+0x0/0x2d0 [Intel536]
Feb  1 12:05:56 ivor [<c012624e>] __wake_up+0x3e/0x60
Feb  1 12:05:56 ivor [<c014c441>] getnstimeofday+0x51/0x110
Feb  1 12:05:56 ivor [<c0260def>] tty_release+0xf/0x20
Feb  1 12:05:56 ivor [<c0193c1f>] __fput+0x9f/0x1a0
Feb  1 12:05:56 ivor [<c0190949>] filp_close+0x49/0x80
Feb  1 12:05:56 ivor [<c01909f9>] sys_close+0x79/0xd0
Feb  1 12:05:56 ivor [<c0103f13>] sysenter_do_call+0x12/0x33
Feb  1 12:05:56 ivor Code: 8b 01 8b 51 0c 89 04 93 89 19 eb c2 f6 c4 60 74 1a 8b 5c 24 08 89 d0 8b 74 24 0c 8b 7c 24 10 8b 6c 24 14 83 c4 18 e9 26 23 fe ff <0f> 0b eb fe 66 90 83 e8 60 e9 18 ff ff ff 90 8d b4 26 00 00 00 
Feb  1 12:05:56 ivor EIP: [<c018efaa>] kfree+0xda/0xe0 SS:ESP 0068:cc86de88
Feb  1 12:05:56 ivor ---[ end trace f49920fb62080421 ]---

Kernel bug?!

ninian

Member

From: United Kingdom

Registered: 2008-02-24

Posts: 726

Website

Re: Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

I've managed to get the modem working again by downgrading to the following kernel 2.6.27 packages:

kernel26-2.6.27.10-1-i686.pkg.tar.gz
intel-536ep-utils-2.56.76.0-28-i686.pkg.tar.gz
intel-536ep-2.56.76.0-58-i686.pkg.tar.gz

Not an ideal solution, but it will suffice for my needs!

ninian

Member

From: United Kingdom

Registered: 2008-02-24

Posts: 726

Website

Re: Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

Updated packages intel-536ep 2.56.76.0-60 and intel-536ep-utils 2.56.76.0-29 seem to work fine!
Thanks to tpowa

Caliburn

Member

Registered: 2008-02-21

Posts: 41

Re: Aaargh! Recent updates screw Intel 536EP modem (and cause seg faults?)

I was having this exact problem, too, and I haven't tried the new drivers until just now. It wasn't occuring for me until after the first call. Things would be working fine and then suddenly said things would just kick and flail themselves into kernel errors.

I'll try the new drivers for awhile and post here if anything develops.

Last edited by Caliburn (2009-03-05 06:08:20)