Public bug reported:
Binary package hint: linux-image-2.6.28-11-generic
I've blacklisted cdc_wdm, and this prevents the null dereference from
occurring.
[586906.612064] usb 6-2: new full speed USB device using uhci_hcd and address 2
[586906.840388] usb 6-2: configuration #2 chosen from 1 choice
[586906.893521] cdc_acm 6-2:2.1: ttyACM0: USB ACM device
[586906.901228] usbcore: registered new interface driver cdc_acm
[586906.901237] cdc_acm: v0.26:USB Abstract Control Model driver for USB modems
and ISDN adapters
[586906.904794] BUG: unable to handle kernel NULL pointer dereference at
0000000000000003
[586906.904805] IP: [<ffffffffa05ef6f2>] wdm_probe+0x1a2/0x470 [cdc_wdm]
[586906.904820] PGD 75874067 PUD 97101067 PMD 0
[586906.904828] Oops: 0000 [#1] SMP
[586906.904834] last sysfs file:
/sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2/6-2:2.1/interface
[586906.904842] Dumping ftrace buffer:
[586906.904847] (ftrace buffer empty)
[586906.904851] CPU 0
[586906.904855] Modules linked in: cdc_wdm(+) cdc_acm xt_multiport
iptable_filter ip_tables x_tables binfmt_misc ppdev bridge stp bnep kvm_intel
kvm input_polldev dm_crypt joydev sbp2 lp parport snd_hda_intel arc4
snd_pcm_oss ecb snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi
iwlagn iwlcore snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device
mac80211 snd sdhci_pci tpm_infineon tpm video psmouse asus_laptop soundcore
iTCO_wdt iTCO_vendor_support usbhid ricoh_mmc sdhci tpm_bios cfg80211 output
intel_agp pcspkr serio_raw snd_page_alloc led_class fglrx(P) ohci1394 ieee1394
atl1 mii fbcon tileblit font bitblit softcursor
[586906.904961] Pid: 17190, comm: modprobe Tainted: P
2.6.28-11-generic #38-Ubuntu
[586906.904967] RIP: 0010:[<ffffffffa05ef6f2>] [<ffffffffa05ef6f2>]
wdm_probe+0x1a2/0x470 [cdc_wdm]
[586906.904978] RSP: 0018:ffff88002216fba8 EFLAGS: 00010286
[586906.904982] RAX: ffff880046561b08 RBX: ffff880043fa5e00 RCX:
0000000000000000
[586906.904987] RDX: ffffffffa05f3e00 RSI: ffffffffa05f0ac8 RDI:
ffff880043fa5ed8
[586906.904991] RBP: ffff88002216fbf8 R08: 0000000000000000 R09:
ffff880043fa5e00
[586906.904996] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[586906.905000] R13: ffff8800525e9825 R14: 0000000000000000 R15:
ffff8800a1a11800
[586906.905006] FS: 00007f12b47626f0(0000) GS:ffffffff80aa3000(0000)
knlGS:0000000000000000
[586906.905011] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[586906.905016] CR2: 0000000000000003 CR3: 000000005f4b5000 CR4:
00000000000026a0
[586906.905020] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[586906.905025] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[586906.905031] Process modprobe (pid: 17190, threadinfo ffff88002216e000, task
ffff88004381c320)
[586906.905035] Stack:
[586906.905038] ffffffff805317c8 ffff8800a1a11830 080088002216fbe8
ffff88008b194088
[586906.905047] ffff8800a1a11960 ffff8800a1a11830 0000000000000000
ffff8800a1a11800
[586906.905056] ffffffffa05f1b60 ffffffffa05f1aa8 ffff88002216fc48
ffffffff80532623
[586906.905067] Call Trace:
[586906.905070] [<ffffffff805317c8>] ? usb_match_one_id+0x38/0xd0
[586906.905086] [<ffffffff80532623>] usb_probe_interface+0xc3/0x180
[586906.905099] [<ffffffff804b9d1d>] really_probe+0x6d/0x1a0
[586906.905109] [<ffffffff804b9e9b>] driver_probe_device+0x4b/0x60
[586906.905118] [<ffffffff804b9f4b>] __driver_attach+0x9b/0xa0
[586906.905125] [<ffffffff804b9eb0>] ? __driver_attach+0x0/0xa0
[586906.905131] [<ffffffff804b950b>] bus_for_each_dev+0x6b/0xa0
[586906.905139] [<ffffffff804b9b9c>] driver_attach+0x1c/0x20
[586906.905146] [<ffffffff804b8cfd>] bus_add_driver+0x14d/0x250
[586906.905156] [<ffffffff804ba13c>] driver_register+0x6c/0x150
[586906.905166] [<ffffffff80532989>] usb_register_driver+0xa9/0x120
[586906.905175] [<ffffffffa003d000>] ? wdm_init+0x0/0x20 [cdc_wdm]
[586906.905184] [<ffffffffa003d01e>] wdm_init+0x1e/0x20 [cdc_wdm]
[586906.905192] [<ffffffff8020a03b>] do_one_initcall+0x3b/0x170
[586906.905201] [<ffffffff802d0225>] ? __vunmap+0xc5/0x110
[586906.905211] [<ffffffff802d02c5>] ? vfree+0x25/0x30
[586906.905217] [<ffffffff8027eee8>] ? load_module+0x11c8/0x11d0
[586906.905232] [<ffffffff8027ef9d>] sys_init_module+0xad/0x1e0
[586906.905240] [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b
[586906.905248] Code: 48 c7 83 08 01 00 00 f0 fd 5e a0 66 89 43 68 48 8d 83 f8
00 00 00 48 89 83 f8 00 00 00 48 89 83 00 01 00 00 49 8b 07 4c 8b 60 10 <41> 0f
b6 44 24 03 83 e0 03 83 f8 03 74 48 41 bc ea ff ff ff 48
[586906.905324] RIP [<ffffffffa05ef6f2>] wdm_probe+0x1a2/0x470 [cdc_wdm]
[586906.905334] RSP <ffff88002216fba8>
[586906.905337] CR2: 0000000000000003
[586906.905342] ---[ end trace b9cceaa5794edf0d ]---
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
oops in cdc_wdm module when a W380a phone is on USB
https://bugs.launchpad.net/bugs/355401
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