Bug initially submitted to https://bugs.kde.org/show_bug.cgi?id=279202 Hello, Kopete crash and kernel oopses when opening "Settings -> Configure" dialog due to presence of DVB-S PCI card (av7110) as /dev/video0. This happens everytime I try to configure Kopete in presence of my DVB PCI card. (see attachment) Reproducible: Always Steps to Reproduce: Own a DVB card and try to configure Kopete. Actual Results: Kopete crash and Kernel oopses. Expected Results: Configure dialog opening. Regards, Laurent
[27457.669041] BUG: unable to handle kernel NULL pointer dereference at (null) [27457.669044] IP: [<ffffffff81331e79>] __mutex_lock_common+0xcb/0x193 [27457.669048] PGD 1b4e03067 PUD 1b471a067 PMD 0 [27457.669050] Oops: 0002 [#1] SMP [27457.669052] last sysfs file: /sys/devices/virtual/video4linux/video0/dev [27457.669054] CPU 0 [27457.669054] Modules linked in: parport_pc ppdev lp parport bnep vboxnetadp(O) vboxnetflt(O) vboxdrv(O) rfcomm bluetooth rfkill crc16 acpi_cpufreq mperf cpufreq_conservative cpufreq_powersave cpufreq_userspace cpufreq_stats snd_hrtimer act_police cls_flow cls_fw cls_u32 sch_tbf sch_prio sch_htb sch_hfsc sch_ingress sch_sfq xt_realm xt_connlimit xt_addrtype iptable_raw xt_comment xt_recent ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah nf_nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 ip6_queue nf_nat_ftp nf_nat_amanda nf_conntrack_proto_udplite nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323 ts_kmp nf_conntrack_ftp nf_conntrack_amanda xt_TPROXY xt_NFLOG nfnetlink_log nf_tproxy_core xt_time xt_TCPMSS xt_tcpmss xt_sctp xt_policy xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_multiport xt_mark xt_mac xt_limit xt_length xt_iprange xt_AUDIT xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp ipt_LOG xt_connmark iptable_nat xt_CLASSIFY nf_nat ip6t_LOG ip6t_REJECT xt_tcpudp xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ipv6 nf_defrag_ipv6 iptable_mangle xt_conntrack nf_conntrack ip6table_raw ip6table_mangle nfnetlink iptable_filter ip_tables ip6table_filter ip6_tables x_tables microcode fuse nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc w83627ehf hwmon_vid coretemp firewire_sbp2 loop snd_hda_codec_hdmi ftdi_sio usbserial stv0299 ves1x93 nvidia(P) snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq dvb_ttpci dvb_core snd_timer snd_seq_device saa7146_vv videodev snd media v4l2_compat_ioctl32 saa7146 videobuf_dma_sg videobuf_core ttpci_eeprom i2c_i801 soundcore snd_page_alloc i7core_edac pcspkr evdev i2c_core edac_core processor psmouse serio_raw thermal_sys wmi ext3 jbd mbcache dm_mod raid1 md_mod sg sr_mod cdrom sd_mod usb_storage hid_logitech crc_t10dif ff_memless uas usbhid hid uhci_hcd dc395x firewire_ohci firewire_core ahci libahci libata scsi_mod button ehci_hcd usbcore crc_itu_t sky2 [last unloaded: scsi_wait_scan] [27457.669132] [27457.669134] Pid: 12073, comm: kopete Tainted: P O 2.6.39-2-amd64 #1 System manufacturer System Product Name/P6T DELUXE V2 [27457.669136] RIP: 0010:[<ffffffff81331e79>] [<ffffffff81331e79>] __mutex_lock_common+0xcb/0x193 [27457.669139] RSP: 0018:ffff88014e403ac8 EFLAGS: 00010246 [27457.669140] RAX: 0000000000000000 RBX: ffff8801b56749d8 RCX: ffff8801b56749f0 [27457.669141] RDX: ffff88014e403ae8 RSI: 0000000000000002 RDI: ffff8801b56749dc [27457.669143] RBP: ffff8801a44d4240 R08: 0000000000000002 R09: 0000000000000000 [27457.669144] R10: 0000000000002f29 R11: ffff8801bfffcc00 R12: 0000000000000002 [27457.669145] R13: ffff8801b56749dc R14: ffff8801b56749e0 R15: ffff88014e402010 [27457.669147] FS: 00007f2f2d786760(0000) GS:ffff8801bfc00000(0000) knlGS:0000000000000000 [27457.669148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [27457.669150] CR2: 0000000000000000 CR3: 0000000128b4a000 CR4: 00000000000006f0 [27457.669151] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [27457.669152] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [27457.669154] Process kopete (pid: 12073, threadinfo ffff88014e402000, task ffff8801a44d4240) [27457.669155] Stack: [27457.669156] 000000000000001e ffffffff810cb01a ffffea0005c86780 0000000000000000 [27457.669158] ffff8801b56749e0 0000000000000000 ffff88014e402000 ffff880100000000 [27457.669161] 0000000005c86780 ffff8801b56749d8 ffff88014e403da8 ffff8801b49f5400 [27457.669163] Call Trace: [27457.669166] [<ffffffff810cb01a>] ? zone_statistics+0x41/0x74 [27457.669170] [<ffffffff8133200d>] ? mutex_lock+0x1a/0x33 [27457.669175] [<ffffffffa01d0c4c>] ? videobuf_reqbufs+0x64/0x19f [videobuf_core] [27457.669180] [<ffffffffa029c2ee>] ? __video_do_ioctl+0x1f68/0x4493 [videodev] [27457.669184] [<ffffffff810bc1be>] ? __alloc_pages_nodemask+0x13d/0x7c4 [27457.669186] [<ffffffff810b5d5a>] ? find_get_page+0x3b/0x5e [27457.669188] [<ffffffff810b76b3>] ? filemap_fault+0x1a3/0x34e [27457.669191] [<ffffffff810f88ee>] ? lookup_page_cgroup+0x2d/0x42 [27457.669193] [<ffffffff810f564b>] ? mem_cgroup_update_page_stat+0x16/0xdd [27457.669195] [<ffffffff810d2404>] ? __do_fault+0x3f9/0x430 [27457.669200] [<ffffffffa029eaee>] ? video_usercopy+0x2d5/0x388 [videodev] [27457.669205] [<ffffffffa029a386>] ? v4l2_video_std_construct+0x52/0x52 [videodev] [27457.669210] [<ffffffffa02993c0>] ? v4l2_ioctl+0x7f/0x122 [videodev] [27457.669213] [<ffffffff811089e1>] ? do_vfs_ioctl+0x445/0x492 [27457.669215] [<ffffffff81108a79>] ? sys_ioctl+0x4b/0x72 [27457.669217] [<ffffffff81338e52>] ? system_call_fastpath+0x16/0x1b [27457.669218] Code: f3 90 eb 93 4c 8d 6b 04 4c 8d 73 08 4c 89 ef e8 c2 0a 00 00 48 8b 43 10 48 8d 54 24 20 4c 89 74 24 20 48 89 53 10 48 89 44 24 28 [27457.669228] 89 10 83 ca ff 48 89 6c 24 30 89 d0 87 03 ff c8 74 53 44 88 [27457.669233] RIP [<ffffffff81331e79>] __mutex_lock_common+0xcb/0x193 [27457.669235] RSP <ffff88014e403ac8> [27457.669236] CR2: 0000000000000000 [27457.669238] ---[ end trace 77418d8930e31700 ]---
