Jul 22 22:33:27 ltros pppd[3513]: Connect: ppp0 <--> /dev/tts/0 Jul 22 22:33:27 ltros pppd[3513]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x62eae411> <pcomp> <accomp>] Jul 22 22:33:27 ltros pppd[3513]: Terminating on signal 15 Jul 22 22:33:27 ltros pppd[3513]: sent [LCP TermReq id=0x2 "User request"] Jul 22 22:33:29 ltros kernel: BUG: unable to handle kernel NULL pointer dereference at 00000014 Jul 22 22:33:29 ltros kernel: IP: [<e10a82e7>] ppp_register_channel+0x10/0x1a [ppp_generic] Jul 22 22:33:29 ltros kernel: *pde = 00000000 Jul 22 22:33:29 ltros kernel: Oops: 0000 [#1] PREEMPT Jul 22 22:33:29 ltros kernel: Modules linked in: usb_storage ppp_async crc_ccitt ppp_generic slhc nvidia_agp drm dm_mod snd_ seq_oss snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss fuse dcdbas ehci_pci snd_emu10k1 snd_rawmidi snd_ac97_codec ac9 7_bus snd_pcm snd_seq_device snd_timer snd_page_alloc snd_util_mem snd_hwdep snd ehci_hcd uhci_hcd intel_agp intel_gtt i2c_i 801 usbcore usb_common agpgart Jul 22 22:33:29 ltros kernel: CPU: 0 PID: 3513 Comm: pppd Not tainted 3.10.2 #1 Jul 22 22:33:29 ltros kernel: Hardware name: Dell Computer Corporation XPS-Z /D815EEA , BIOS A11 06/11/2002 Jul 22 22:33:29 ltros kernel: task: ccdd0da0 ti: ccca2000 task.ti: ccca2000 Jul 22 22:33:29 ltros kernel: EIP: 0060:[<e10a82e7>] EFLAGS: 00010293 CPU: 0 Jul 22 22:33:29 ltros kernel: EIP is at ppp_register_channel+0x10/0x1a [ppp_generic] Jul 22 22:33:29 ltros kernel: EAX: 00000000 EBX: ccfc8000 ECX: df782a4c EDX: ccfc8094 Jul 22 22:33:29 ltros kernel: ESI: fffffff4 EDI: df782a00 EBP: ccca3d98 ESP: ccca3d98 Jul 22 22:33:29 ltros kernel: DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Jul 22 22:33:29 ltros kernel: CR0: 8005003b CR2: 00000014 CR3: 1f6c9000 CR4: 000007d0 Jul 22 22:33:29 ltros kernel: DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Jul 22 22:33:29 ltros kernel: DR6: ffff0ff0 DR7: 00000400 Jul 22 22:33:29 ltros kernel: Stack: Jul 22 22:33:29 ltros kernel: ccca3db8 e10baa41 00000000 ccfc808c ccfc808c df782a00 ccdb6ec0 df782a00 Jul 22 22:33:29 ltros kernel: ccca3dc8 c116e152 df782a18 ccdd0da0 ccca3e30 c116e7f4 00000000 00000296 Jul 22 22:33:29 ltros kernel: 00000001 00000000 00000296 00000000 00000001 ccdd0da0 ccca3e0c c102fe16 Jul 22 22:33:29 ltros kernel: Call Trace: Jul 22 22:33:29 ltros kernel: [<e10baa41>] ppp_asynctty_open+0xed/0x116 [ppp_async] Jul 22 22:33:29 ltros kernel: [<c116e152>] tty_ldisc_open+0x35/0x44 Jul 22 22:33:29 ltros kernel: [<c116e7f4>] tty_ldisc_hangup+0x159/0x1e5 Jul 22 22:33:29 ltros kernel: [<c102fe16>] ? group_send_sig_info+0x3e/0x4b Jul 22 22:33:29 ltros kernel: [<c102ff84>] ? __kill_pgrp_info+0x3c/0x67 Jul 22 22:33:29 ltros kernel: [<c116872f>] __tty_hangup+0x265/0x329 Jul 22 22:33:29 ltros kernel: [<c1168839>] disassociate_ctty+0x46/0x1ca Jul 22 22:33:29 ltros kernel: [<c10283db>] do_exit+0x28c/0x6d9 Jul 22 22:33:29 ltros kernel: [<c102eb64>] ? recalc_sigpending+0x11/0x37 Jul 22 22:33:29 ltros kernel: [<c102888b>] do_group_exit+0x63/0x86 Jul 22 22:33:29 ltros kernel: [<c103117f>] get_signal_to_deliver+0x47d/0x4a3 Jul 22 22:33:29 ltros kernel: [<c1000fd6>] do_notify_resume+0x4c/0x436 Jul 22 22:33:29 ltros kernel: [<e10a80a1>] ? ppp_xmit_process+0x494/0x4a8 [ppp_generic] Jul 22 22:33:29 ltros kernel: [<c1092151>] ? poll_select_copy_remaining+0xb2/0xce Jul 22 22:33:29 ltros kernel: [<c1093385>] ? SyS_select+0x94/0xa3 Jul 22 22:33:29 ltros kernel: [<c129438b>] work_notifysig+0x24/0x29 Jul 22 22:33:29 ltros kernel: Code: 98 08 e8 24 01 f9 df 85 ff 0f 85 6a ff ff ff e9 61 ff ff ff 5e 5f 5b 5e 5f 5d c3 55 89 c 2 a1 b4 fe 38 c1 8b 80 5c 02 00 00 89 e5 <8b> 40 14 e8 e7 fe ff ff 5d c3 55 8b 90 90 00 00 00 89 e5 ff 82 Jul 22 22:33:29 ltros kernel: EIP: [<e10a82e7>] ppp_register_channel+0x10/0x1a [ppp_generic] SS:ESP 0068:ccca3d98 Jul 22 22:33:29 ltros kernel: CR2: 0000000000000014 Jul 22 22:33:29 ltros kernel: ---[ end trace f256bd4e340f2b2c ]--- Jul 22 22:33:29 ltros kernel: Fixing recursive fault but reboot is needed!
This same error happened to me yesterday with kernel 3.10.1 Thanks.
I have been running kernel 3.11.5 for three days and have dialed up at least 20 times with no 'oops'. I assume that this problem has been resolved. If it happens again I'll re-post. Thank you. # date Wed Oct 23 12:25:37 EDT 2013 # uname -a Linux beros 3.11.5 #1 PREEMPT Mon Oct 14 11:43:17 EDT 2013 i686 Pentium III (Coppermine) GenuineIntel GNU/Linux # uptime 12:25:44 up 3 days, 3:21, 17 users, load average: 0.57, 0.38, 0.25
I was premature in my assumption. Kernel 3.11.5 just oops'ed after modem disconnect, exactly as before. I'll have to stick with kernel 3.9.11 until it's resolved. I saved the trace, but it looks identical to the output from July's crash. Sorry for the inconvenience.
grabbing as seems to be a tty related bug
This bug seems to have been fixed as of 3.14.2. My uptime was 16 days with that kernel and 110 days with 3.15.1. Thank you people, you make a great product :) -tof-