http://bugzilla.suse.com/show_bug.cgi?id=1007325 Bug ID: 1007325 Summary: Kernel oops when dial up usb modem is plugged Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Major Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: luizluca@tre-sc.jus.br QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 699663 --> http://bugzilla.suse.com/attachment.cgi?id=699663&action=edit Console log since boot (capture using serial) Hello, As soon as I plug an USB modem, kernel oops. On some machine, it lockups a couple of seconds after the device is plugged. This happens since I upgrade to kernel 4.8.x. The device in case is: Bus 003 Device 002: ID 0572:1329 Conexant Systems (Rockwell), Inc. The first kernel oops is: [ 205.266834] BUG: unable to handle kernel NULL pointer dereference at 0000000000000007 [ 205.360322] IP: [<ffffffffc0875180>] acm_probe+0x470/0x1020 [cdc_acm] [ 205.360323] PGD 0 [ 205.360324] Oops: 0000 [#1] PREEMPT SMP [ 205.360353] Modules linked in: vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) af_packet ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw xt_REDIRECT nf_nat_redirect ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat ipt_REJECT nf_reject_ipv4 xt_pkttype xt_TCPMSS xt_tcpudp nf_log_ipv4 nf_log_common xt_LOG xt_limit iptable_nat nf_nat_ipv4 iptable_raw xt_CT iptable_filter ip6table_mangle nf_nat_sip nf_conntrack_sip nf_nat_proto_sctp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_h323 nf_conntrack_h323 nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_nat_tftp nf_nat nf_conntrack_ftp nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_tftp nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack ip6table_filter ip6_tables x_tables msr dm_cache_smq intel_powerclamp coretemp snd_hda_codec_hdmi snd_hda_codec_analog snd_hda_codec_generic kvm_intel snd_hda_intel kvm irqbypass snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda_core ghash_clmulni_intel snd_hwdep tg3 aesni_intel dell_wmi aes_x86_64 sparse_keymap snd_pcm ptp iTCO_wdt lrw dell_smbios ppdev glue_helper snd_timer pps_core r8169 cdc_acm ablk_helper iTCO_vendor_support gpio_ich dcdbas dell_smm_hwmon cryptd pcspkr i2c_i801 i7core_edac libphy mii i2c_smbus parport_pc lpc_ich snd mfd_core soundcore edac_core parport shpchp acpi_cpufreq tpm_tis tpm_tis_core tpm btrfs xor zlib_deflate raid6_pq hid_generic usbhid nouveau video mxm_wmi i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm uhci_hcd ehci_pci ehci_hcd serio_raw sr_mod usbcore cdrom usb_common drm wmi button sg dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua dm_cache dm_persistent_data libcrc32c crc32c_intel dm_bio_prison dm_bufio dm_mod [ 205.360392] CPU: 0 PID: 167 Comm: kworker/0:2 Tainted: G IO 4.8.4-1-default #1 [ 205.360393] Hardware name: Dell Inc. Precision WorkStation T3500 /09KPNV, BIOS A13 10/30/2011 [ 205.360409] Workqueue: usb_hub_wq hub_event [usbcore] [ 205.360409] task: ffff8c02fc4ea180 task.stack: ffff8c02fc738000 [ 205.360413] RIP: 0010:[<ffffffffc0875180>] [<ffffffffc0875180>] acm_probe+0x470/0x1020 [cdc_acm] [ 205.360415] RSP: 0018:ffff8c02fc73b868 EFLAGS: 00010202 [ 205.360416] RAX: 0000000000000004 RBX: ffff8c02d7e6a400 RCX: 0000000000000001 [ 205.360417] RDX: 0000000000000040 RSI: 0000000000000100 RDI: ffffffffc0879060 [ 205.360417] RBP: 0000000000000001 R08: ffffffffffffffff R09: fffffffffffffffe [ 205.360418] R10: 0000000000000001 R11: ffff8c02fb7c0000 R12: ffff8c02d7e6a400 [ 205.360419] R13: 0000000000000000 R14: ffff8c02fb7c0000 R15: 0000000000000040 [ 205.360421] FS: 0000000000000000(0000) GS:ffff8c02fee00000(0000) knlGS:0000000000000000 [ 205.360422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 205.360423] CR2: 0000000000000007 CR3: 000000019ce06000 CR4: 00000000000006f0 [ 205.360424] Stack: [ 205.360426] ffff8c02ef301400 ffff8c02f728a000 ffff8c0200000010 ffff8c02f728a098 [ 205.360428] 0000000000000080 ffff8c02bc2120c0 ffff8c02bc212110 ffff8c02e47c2380 [ 205.360430] ffff8bfe7fc9dd10 ffff8bfe7fc9dd00 0000000000000001 00000000024000c0 [ 205.360430] Call Trace: [ 205.360456] [<ffffffffc033aced>] usb_probe_interface+0x15d/0x2c0 [usbcore] [ 205.360464] [<ffffffffb94e78ca>] driver_probe_device+0x21a/0x420 [ 205.360469] [<ffffffffb94e5765>] bus_for_each_drv+0x55/0x90 [ 205.360473] [<ffffffffb94e7585>] __device_attach+0xb5/0x130 [ 205.360477] [<ffffffffb94e6817>] bus_probe_device+0x87/0xa0 [ 205.360480] [<ffffffffb94e474c>] device_add+0x47c/0x640 [ 205.360494] [<ffffffffc0338e38>] usb_set_configuration+0x5b8/0x8e0 [usbcore] [ 205.360509] [<ffffffffc03435c8>] generic_probe+0x28/0x80 [usbcore] [ 205.360513] [<ffffffffb94e78ca>] driver_probe_device+0x21a/0x420 [ 205.360517] [<ffffffffb94e5765>] bus_for_each_drv+0x55/0x90 [ 205.360520] [<ffffffffb94e7585>] __device_attach+0xb5/0x130 [ 205.360524] [<ffffffffb94e6817>] bus_probe_device+0x87/0xa0 [ 205.360528] [<ffffffffb94e474c>] device_add+0x47c/0x640 [ 205.360539] [<ffffffffc032e55a>] usb_new_device+0x28a/0x5f0 [usbcore] [ 205.360551] [<ffffffffc032fa76>] hub_port_connect+0x316/0x980 [usbcore] [ 205.360563] [<ffffffffc03309c9>] hub_event+0x8e9/0xa90 [usbcore] [ 205.360568] [<ffffffffb90966bd>] process_one_work+0x1ed/0x4d0 [ 205.360573] [<ffffffffb90969e7>] worker_thread+0x47/0x4c0 [ 205.360576] [<ffffffffb909c59d>] kthread+0xbd/0xe0 [ 205.360580] [<ffffffffb96d461f>] ret_from_fork+0x1f/0x40 [ 205.363295] DWARF2 unwinder stuck at ret_from_fork+0x1f/0x40 [ 205.363296] [ 205.363296] Leftover inexact backtrace: [ 205.363296] [ 205.363299] [<ffffffffb909c4e0>] ? kthread_worker_fn+0x170/0x170 [ 205.363318] Code: 00 8d 04 80 c1 e0 02 41 89 86 18 08 00 00 48 8b 04 24 49 89 46 10 48 8b 44 24 08 49 89 06 48 8b 84 24 98 00 00 00 48 85 c0 74 0b <0f> b6 40 03 41 89 86 2c 08 00 00 40 f6 c5 04 74 08 41 83 a6 2c [ 205.363322] RIP [<ffffffffc0875180>] acm_probe+0x470/0x1020 [cdc_acm] [ 205.363322] RSP <ffff8c02fc73b868> [ 205.363323] CR2: 0000000000000007 [ 205.363325] ---[ end trace baae9f1f8c76a825 ]--- [ 205.363393] BUG: unable to handle kernel NULL pointer dereference at (null) [ 205.363396] IP: [<ffffffffb90be775>] __wake_up_common+0x25/0x80 [ 205.363397] PGD 0 [ 205.363398] Oops: 0000 [#2] PREEMPT SMP -- You are receiving this mail because: You are on the CC list for the bug.