Re: [Bugme-new] [Bug 11499] New: BUG & Oops with USB sound card 0d8c:000c C-Media Electronics

[Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

(Might be an alsa bug?)

On Thu,  4 Sep 2008 13:43:41 -0700 (PDT)
bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=11499
> 
>            Summary: BUG & Oops with USB sound card 0d8c:000c C-Media
>                     Electronics
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.27-rc5
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: USB
>         AssignedTo: greg@xxxxxxxxx
>         ReportedBy: kernel6org@xxxxxxx
> 
> 
> Latest working kernel version:?
> Earliest failing kernel version:2.6.27-rc5
> Distribution: Debian
> Hardware Environment:Intel Core 2 Duo E6550
> Software Environment:2.6.27-rc5 i686 32 bit
> Problem Description:using the USB sound card causes an Oops
> 
> Steps to reproduce:
> 
> I just bought a Philips SHM6105/00 VoIP headset that came with a USB sound card
> which is identified as a 0d8c:000c C-Media Electronics, Inc. Audio Adapter. I
> see to be able play sound ok but recording and playing at the same time causes
> problems. This morning I got a total USB freeze (even the light on my USB mouse
> went off) and tonight I got the "BUG". I guess that I have to reboot as I have
> lots of hung processes.
> 
> I as using a vanilla kernel.
> 
> [46192.928097] usb 4-1.2: reset full speed USB device using ehci_hcd and
> address 7
> [46866.188431] BUG: unable to handle kernel paging request at 00100100
> [46866.188435] IP: [<f8974611>] :snd_pcm:snd_pcm_attach_substream+0x79/0x2a8
> [46866.188446] *pde = 00000000 
> [46866.188449] Oops: 0000 [#1] SMP 
> [46866.188451] Modules linked in: bnep rfcomm l2cap tun binfmt_misc kvm_intel
> kvm video output ac battery bridge stp ip6t_LOG nf_conntrack_ipv6 ipt_REJECT
> xt_limit nf_conntrack_ipv4 xt_state nf_conntrack xt_comment ts_bm xt_string
> xt_length xt_tcpudp xt_physdev ipt_LOG ip6table_filter ip6_tables
> iptable_filter ip_tables x_tables ipv6 vfat fat loop isofs zlib_inflate
> sha256_generic aes_generic cbc dm_crypt crypto_blkcipher dm_snapshot dm_mirror
> dm_log dm_mod coretemp it87 hwmon_vid usb_storage btusb bluetooth snd_usb_audio
> snd_usb_lib snd_seq_dummy snd_seq_oss usbhid snd_seq_midi hid
> snd_seq_midi_event snd_seq ff_memless snd_rawmidi snd_seq_device snd_hwdep
> snd_hda_intel snd_mixer_oss snd_pcm ide_cd_mod i2c_i801 cdrom parport_pc
> parport ehci_hcd iTCO_wdt button snd_timer i2c_core uhci_hcd snd intel_agp
> evdev soundcore snd_page_alloc pcspkr
> [46866.188505] 
> [46866.188507] Pid: 28719, comm: arecord Not tainted (2.6.27-rc5 #1)
> [46866.188509] EIP: 0060:[<f8974611>] EFLAGS: 00210212 CPU: 0
> [46866.188518] EIP is at snd_pcm_attach_substream+0x79/0x2a8 [snd_pcm]
> [46866.188520] EAX: 00007030 EBX: f712ed70 ECX: 00100100 EDX: ef1faa40
> [46866.188522] ESI: e556fe78 EDI: 00100100 EBP: ef3b1e00 ESP: e556fe24
> [46866.188524]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> [46866.188526] Process arecord (pid: 28719, ti=e556e000 task=ef1faa40
> task.ti=e556e000)
> [46866.188528] Stack: ef1ef5c0 00000001 f712ed4c e556fe48 e556fe78 ef3b1f10
> ef1ef5c0 f8976c60 
> [46866.188533]        e556fe48 00000000 fffffff2 ef3b1e00 f8976d5f e556fe78
> 00000001 ef3b1f20 
> [46866.188537]        00000000 ef1faa40 c021ed6b ef3b1f24 ef3b1f24 ef1ef5c0
> 00000000 f88fe960 
> [46866.188542] Call Trace:
> [46866.188545]  [<f8976c60>] snd_pcm_open_substream+0x11/0x6c [snd_pcm]
> [46866.188557]  [<f8976d5f>] snd_pcm_open+0xa4/0x179 [snd_pcm]
> [46866.188566]  [<c021ed6b>] default_wake_function+0x0/0x8
> [46866.188574]  [<f88fa4b8>] snd_open+0xb7/0x10f [snd]
> [46866.188584]  [<c027c8e8>] chrdev_open+0x132/0x149
> [46866.188587]  [<c027c7b6>] chrdev_open+0x0/0x149
> [46866.188590]  [<c0278f78>] __dentry_open+0x10d/0x1fc
> [46866.188593]  [<c02790e4>] nameidata_to_filp+0x1c/0x2c
> [46866.188595]  [<c0283879>] do_filp_open+0x34b/0x6a0
> [46866.188601]  [<f88fa778>] snd_card_file_remove+0xdc/0xe4 [snd]
> [46866.188611]  [<f88fbf4a>] snd_ctl_empty_read_queue+0x13/0x49 [snd]
> [46866.188620]  [<c028c423>] alloc_fd+0xb9/0xc5
> [46866.188623]  [<c0278d99>] do_sys_open+0x3f/0xb2
> [46866.188626]  [<c0278e50>] sys_open+0x1e/0x23
> [46866.188628]  [<c02038a3>] sysenter_do_call+0x12/0x2f
> [46866.188631]  =======================
> [46866.188632] Code: c7 8b 8b 70 01 00 00 81 c3 70 01 00 00 eb 1c 64 8b 15 00
> d0 58 c0 8b 41 0c 3b 82 04 01 00 00 75 08 8b 71 10 83 fe ff 75 0f 89 f9 <8b> 39
> 0f 18 07 90 39 d9 75 da 83 ce ff 8b 44 24 08 e8 6f 22 8c 
> [46866.188657] EIP: [<f8974611>] snd_pcm_attach_substream+0x79/0x2a8 [snd_pcm]
> SS:ESP 0068:e556fe24
> [46866.188670] ---[ end trace 3974142a4c620b4a ]---
> 
> 
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