Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-11-05 Thread Christof Meerwald
On Sat, Nov 03, 2012 at 03:16:36PM +0100, Daniel Mack wrote:
 On 03.11.2012 15:10, Christof Meerwald wrote:
  http://comments.gmane.org/gmane.comp.voip.twinkle/3052 and
  http://pastebin.com/aHGe1S1X for a self-contained C test.
 Some questions:
 
  - Are you seeing the same issue with 3.6.x?

I haven't tried it myself, but the other poster on
http://comments.gmane.org/gmane.comp.voip.twinkle/3052 mentions 3.6.2
(and 3.6.3)

  - If you can reproduce this issue, could you paste the messages in
 dmesg when this happens? Do they resemble to the list corruption that
 was reported?

I am not seeing any kernel messages at all - the system just freezes
and not even the SysRq stuff works after that.

  - Do you see the same problem with 3.4?

I upgraded from Ubuntu 12.04 (Linux 3.2) where I didn't see the
problem. However,
http://www.linuxquestions.org/questions/linux-desktop-74/twinkle-causes-linux-freeze-kernel-3-6-2-a-4175433799/
mentions 3.4.0

  - Are you able to apply the patch Alan Stern posted in this thread earlier?

Unfortunately, I am not really in a position to apply kernel patches
at the moment.


 We should really sort this out, but I unfortunately lack a system or
 setup that shows the bug.

BTW, I have been able to reproduce the problem on a completely
different machine (also running Ubuntu 12.10, but different hardware).
The important thing appears to be that the USB audio device is
connected via a USB 2.0 hub (and then using the test code posted in
http://pastebin.com/aHGe1S1X specifying the audio device as
plughw:Set (or whatever it's called) seems to trigger the freeze).

So I guess another question is: do you have a USB headset connected
via a USB 2.0 hub and not seeing the problem or is your USB headset
not connected via a USB 2.0 hub? (of course, it would also be useful
if others could comment if they are seeing the problem with that setup
or not)


Christof

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-11-03 Thread Daniel Mack
On 03.11.2012 15:10, Christof Meerwald wrote:
 On Sat, 20 Oct 2012 23:15:17 + (GMT), Artem S. Tashkinov wrote:
 It's almost definitely either a USB driver bug or video4linux driver bug:

 I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
 here:
 https://lkml.org/lkml/2012/10/20/35
 https://lkml.org/lkml/2012/10/20/148
 
 Not sure if it's related, but I am seeing a kernel freeze with a
 usb-audio headset (connected via an external USB hub) on Linux 3.5.0
 (Ubuntu 12.10) - see

Does Ubuntu 12.10 really ship with 3.5.0? Not any more recent

 http://comments.gmane.org/gmane.comp.voip.twinkle/3052 and
 http://pastebin.com/aHGe1S1X for a self-contained C test.

Some questions:

 - Are you seeing the same issue with 3.6.x?
 - If you can reproduce this issue, could you paste the messages in
dmesg when this happens? Do they resemble to the list corruption that
was reported?
 - Do you see the same problem with 3.4?
 - Are you able to apply the patch Alan Stern posted in this thread earlier?

We should really sort this out, but I unfortunately lack a system or
setup that shows the bug.


Thanks,
Daniel

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-11-03 Thread Christof Meerwald
On Sat, 20 Oct 2012 23:15:17 + (GMT), Artem S. Tashkinov wrote:
 It's almost definitely either a USB driver bug or video4linux driver bug:

 I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
 here:
 https://lkml.org/lkml/2012/10/20/35
 https://lkml.org/lkml/2012/10/20/148

Not sure if it's related, but I am seeing a kernel freeze with a
usb-audio headset (connected via an external USB hub) on Linux 3.5.0
(Ubuntu 12.10) - see
http://comments.gmane.org/gmane.comp.voip.twinkle/3052 and
http://pastebin.com/aHGe1S1X for a self-contained C test.


Christof

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-11-03 Thread Sven-Haegar Koch
On Sat, 3 Nov 2012, Daniel Mack wrote:

 On 03.11.2012 15:10, Christof Meerwald wrote:
  On Sat, 20 Oct 2012 23:15:17 + (GMT), Artem S. Tashkinov wrote:
  It's almost definitely either a USB driver bug or video4linux driver bug:
 
  I'm CC'ing linux-media and linux-usb mailing lists, the problem is 
  described here:
  https://lkml.org/lkml/2012/10/20/35
  https://lkml.org/lkml/2012/10/20/148
  
  Not sure if it's related, but I am seeing a kernel freeze with a
  usb-audio headset (connected via an external USB hub) on Linux 3.5.0
  (Ubuntu 12.10) - see
 
 Does Ubuntu 12.10 really ship with 3.5.0? Not any more recent

They ship 3.5.7 plus some more fixes, but call it 3.5.0-18.29

c'ya
sven-haegar

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Re: Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-22 Thread Alan Stern
On Sun, 21 Oct 2012, Artem S. Tashkinov wrote:

 dmesg messages up to a crash can be seen here: 
 https://bugzilla.kernel.org/attachment.cgi?id=84221

The first problem in the log is endpoint list corruption.  Here's a 
debugging patch which should provide a little more information.

Alan Stern


 drivers/usb/core/hcd.c |   36 
 1 file changed, 36 insertions(+)

Index: usb-3.6/drivers/usb/core/hcd.c
===
--- usb-3.6.orig/drivers/usb/core/hcd.c
+++ usb-3.6/drivers/usb/core/hcd.c
@@ -1083,6 +1083,8 @@ EXPORT_SYMBOL_GPL(usb_calc_bus_time);
 
 /*-*/
 
+static bool list_error;
+
 /**
  * usb_hcd_link_urb_to_ep - add an URB to its endpoint queue
  * @hcd: host controller to which @urb was submitted
@@ -1126,6 +1128,20 @@ int usb_hcd_link_urb_to_ep(struct usb_hc
 */
if (HCD_RH_RUNNING(hcd)) {
urb-unlinked = 0;
+
+   {
+   struct list_head *cur = urb-ep-urb_list;
+   struct list_head *prev = cur-prev;
+
+   if (prev-next != cur  !list_error) {
+   list_error = true;
+   dev_err(urb-dev-dev,
+   ep %x list add corruption: %p %p %p\n,
+   urb-ep-desc.bEndpointAddress,
+   cur, prev, prev-next);
+   }
+   }
+
list_add_tail(urb-urb_list, urb-ep-urb_list);
} else {
rc = -ESHUTDOWN;
@@ -1193,6 +1209,26 @@ void usb_hcd_unlink_urb_from_ep(struct u
 {
/* clear all state linking urb to this dev (and hcd) */
spin_lock(hcd_urb_list_lock);
+   {
+   struct list_head *cur = urb-urb_list;
+   struct list_head *prev = cur-prev;
+   struct list_head *next = cur-next;
+
+   if (prev-next != cur  !list_error) {
+   list_error = true;
+   dev_err(urb-dev-dev,
+   ep %x list del corruption prev: %p %p %p\n,
+   urb-ep-desc.bEndpointAddress,
+   cur, prev, prev-next);
+   }
+   if (next-prev != cur  !list_error) {
+   list_error = true;
+   dev_err(urb-dev-dev,
+   ep %x list del corruption next: %p %p %p\n,
+   urb-ep-desc.bEndpointAddress,
+   cur, next, next-prev);
+   }
+   }
list_del_init(urb-urb_list);
spin_unlock(hcd_urb_list_lock);
 }

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-22 Thread Daniel Mack
On 22.10.2012 17:17, Alan Stern wrote:
 On Sun, 21 Oct 2012, Artem S. Tashkinov wrote:
 
 dmesg messages up to a crash can be seen here: 
 https://bugzilla.kernel.org/attachment.cgi?id=84221
 
 The first problem in the log is endpoint list corruption.  Here's a 
 debugging patch which should provide a little more information.

Maybe add a BUG() after each of these dev_err() so we stop at the first
occurance and also see where we're coming from?




  drivers/usb/core/hcd.c |   36 
  1 file changed, 36 insertions(+)
 
 Index: usb-3.6/drivers/usb/core/hcd.c
 ===
 --- usb-3.6.orig/drivers/usb/core/hcd.c
 +++ usb-3.6/drivers/usb/core/hcd.c
 @@ -1083,6 +1083,8 @@ EXPORT_SYMBOL_GPL(usb_calc_bus_time);
  
  /*-*/
  
 +static bool list_error;
 +
  /**
   * usb_hcd_link_urb_to_ep - add an URB to its endpoint queue
   * @hcd: host controller to which @urb was submitted
 @@ -1126,6 +1128,20 @@ int usb_hcd_link_urb_to_ep(struct usb_hc
*/
   if (HCD_RH_RUNNING(hcd)) {
   urb-unlinked = 0;
 +
 + {
 + struct list_head *cur = urb-ep-urb_list;
 + struct list_head *prev = cur-prev;
 +
 + if (prev-next != cur  !list_error) {
 + list_error = true;
 + dev_err(urb-dev-dev,
 + ep %x list add corruption: %p %p %p\n,
 + urb-ep-desc.bEndpointAddress,
 + cur, prev, prev-next);
 + }
 + }
 +
   list_add_tail(urb-urb_list, urb-ep-urb_list);
   } else {
   rc = -ESHUTDOWN;
 @@ -1193,6 +1209,26 @@ void usb_hcd_unlink_urb_from_ep(struct u
  {
   /* clear all state linking urb to this dev (and hcd) */
   spin_lock(hcd_urb_list_lock);
 + {
 + struct list_head *cur = urb-urb_list;
 + struct list_head *prev = cur-prev;
 + struct list_head *next = cur-next;
 +
 + if (prev-next != cur  !list_error) {
 + list_error = true;
 + dev_err(urb-dev-dev,
 + ep %x list del corruption prev: %p %p %p\n,
 + urb-ep-desc.bEndpointAddress,
 + cur, prev, prev-next);
 + }
 + if (next-prev != cur  !list_error) {
 + list_error = true;
 + dev_err(urb-dev-dev,
 + ep %x list del corruption next: %p %p %p\n,
 + urb-ep-desc.bEndpointAddress,
 + cur, next, next-prev);
 + }
 + }
   list_del_init(urb-urb_list);
   spin_unlock(hcd_urb_list_lock);
  }
 

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-22 Thread Alan Stern
On Mon, 22 Oct 2012, Daniel Mack wrote:

 On 22.10.2012 17:17, Alan Stern wrote:
  On Sun, 21 Oct 2012, Artem S. Tashkinov wrote:
  
  dmesg messages up to a crash can be seen here: 
  https://bugzilla.kernel.org/attachment.cgi?id=84221
  
  The first problem in the log is endpoint list corruption.  Here's a 
  debugging patch which should provide a little more information.
 
 Maybe add a BUG() after each of these dev_err() so we stop at the first
 occurance and also see where we're coming from?

A BUG() at these points would crash the machine hard.  And where we
came from doesn't matter; what matters is the values in the pointers.

Alan Stern

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Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-22 Thread Artem S. Tashkinov
On Oct 22, 2012, Alan Stern st...@rowland.harvard.edu wrote: 

 A BUG() at these points would crash the machine hard.  And where we
 came from doesn't matter; what matters is the values in the pointers.

OK, here's what the kernel prints with your patch:

usb 6.1.4: ep 86 list del corruption prev: e5103b54 e5103a94 e51039d4

A small delay before I got thousands of list_del corruption messages would
have been nice, but I managed to catch the message anyway.

Artem

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Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-22 Thread Alan Stern
On Mon, 22 Oct 2012, Artem S. Tashkinov wrote:

 OK, here's what the kernel prints with your patch:
 
 usb 6.1.4: ep 86 list del corruption prev: e5103b54 e5103a94 e51039d4
 
 A small delay before I got thousands of list_del corruption messages would
 have been nice, but I managed to catch the message anyway.

All right.  Here's a new patch, which will print more information and
will provide a 10-second delay.

For this to be useful, you should capture a usbmon trace at the same
time.  The relevant entries will show up in the trace shortly before
_and_ shortly after the error message appears.

Alan Stern

P.S.: It will help if you unplug as many of the other USB devices as
possible before running this test.



Index: usb-3.6/drivers/usb/core/hcd.c
===
--- usb-3.6.orig/drivers/usb/core/hcd.c
+++ usb-3.6/drivers/usb/core/hcd.c
@@ -1083,6 +1083,8 @@ EXPORT_SYMBOL_GPL(usb_calc_bus_time);
 
 /*-*/
 
+static bool list_error;
+
 /**
  * usb_hcd_link_urb_to_ep - add an URB to its endpoint queue
  * @hcd: host controller to which @urb was submitted
@@ -1193,6 +1195,25 @@ void usb_hcd_unlink_urb_from_ep(struct u
 {
/* clear all state linking urb to this dev (and hcd) */
spin_lock(hcd_urb_list_lock);
+   {
+   struct list_head *cur = urb-urb_list;
+   struct list_head *prev = cur-prev;
+   struct list_head *next = cur-next;
+
+   if (prev-next != cur  !list_error) {
+   list_error = true;
+   dev_err(urb-dev-dev,
+   ep %x list del corruption prev: %p %p %p %p 
%p\n,
+   urb-ep-desc.bEndpointAddress,
+   cur, prev, prev-next, next, next-prev);
+   dev_err(urb-dev-dev,
+   head %p urb %p urbprev %p urbnext %p\n,
+   urb-ep-urb_list, urb,
+   list_entry(prev, struct urb, urb_list),
+   list_entry(next, struct urb, urb_list));
+   mdelay(1);
+   }
+   }
list_del_init(urb-urb_list);
spin_unlock(hcd_urb_list_lock);
 }

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 01:15, Artem S. Tashkinov wrote:
 You don't get me - I have *no* VirtualBox (or any proprietary) modules running
 - but I can reproduce this problem using *the same system running under* 
 VirtualBox
 in Windows 7 64.
 
 It's almost definitely either a USB driver bug or video4linux driver bug:
 
 I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
 here:
 https://lkml.org/lkml/2012/10/20/35
 https://lkml.org/lkml/2012/10/20/148
 
 Here are  the last lines from my dmesg (with usbmon loaded):
 
 [  292.164833] hub 1-0:1.0: state 7 ports 8 chg  evt 0002
 [  292.168091] ehci_hcd :00:1f.5: GetStatus port:1 status 00100a 0  ACK 
 POWER sig=se0 PEC CSC
 [  292.172063] hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
 [  292.174883] usb 1-1: USB disconnect, device number 2
 [  292.178045] usb 1-1: unregistering device
 [  292.183539] usb 1-1: unregistering interface 1-1:1.0
 [  292.197034] usb 1-1: unregistering interface 1-1:1.1
 [  292.204317] usb 1-1: unregistering interface 1-1:1.2
 [  292.234519] usb 1-1: unregistering interface 1-1:1.3
 [  292.236175] usb 1-1: usb_disable_device nuking all URBs
 [  292.364429] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 
 0x100
 [  294.364279] hub 1-0:1.0: hub_suspend
 [  294.366045] usb usb1: bus auto-suspend, wakeup 1
 [  294.367375] ehci_hcd :00:1f.5: suspend root hub
 [  296.501084] usb usb1: usb wakeup-resume
 [  296.508311] usb usb1: usb auto-resume
 [  296.509833] ehci_hcd :00:1f.5: resume root hub
 [  296.560149] hub 1-0:1.0: hub_resume
 [  296.562240] ehci_hcd :00:1f.5: GetStatus port:1 status 001003 0  ACK 
 POWER sig=se0 CSC CONNECT
 [  296.566141] hub 1-0:1.0: port 1: status 0501 change 0001
 [  296.670413] hub 1-0:1.0: state 7 ports 8 chg 0002 evt 
 [  296.673222] hub 1-0:1.0: port 1, status 0501, change , 480 Mb/s
 [  297.311720] usb 1-1: new high-speed USB device number 3 using ehci_hcd
 [  300.547237] usb 1-1: skipped 1 descriptor after configuration
 [  300.549443] usb 1-1: skipped 4 descriptors after interface
 [  300.552273] usb 1-1: skipped 2 descriptors after interface
 [  300.556499] usb 1-1: skipped 1 descriptor after endpoint
 [  300.559392] usb 1-1: skipped 2 descriptors after interface
 [  300.560960] usb 1-1: skipped 1 descriptor after endpoint
 [  300.562169] usb 1-1: skipped 2 descriptors after interface
 [  300.563440] usb 1-1: skipped 1 descriptor after endpoint
 [  300.564639] usb 1-1: skipped 2 descriptors after interface
 [  300.565828] usb 1-1: skipped 2 descriptors after endpoint
 [  300.567084] usb 1-1: skipped 9 descriptors after interface
 [  300.569205] usb 1-1: skipped 1 descriptor after endpoint
 [  300.570484] usb 1-1: skipped 53 descriptors after interface
 [  300.595843] usb 1-1: default language 0x0409
 [  300.602503] usb 1-1: USB interface quirks for this device: 2
 [  300.605700] usb 1-1: udev 3, busnum 1, minor = 2
 [  300.606959] usb 1-1: New USB device found, idVendor=046d, idProduct=081d
 [  300.610298] usb 1-1: New USB device strings: Mfr=0, Product=0, 
 SerialNumber=1
 [  300.613742] usb 1-1: SerialNumber: 48C5D2B0
 [  300.617703] usb 1-1: usb_probe_device
 [  300.620594] usb 1-1: configuration #1 chosen from 1 choice
 [  300.639218] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
 [  300.640736] snd-usb-audio 1-1:1.0: usb_probe_interface
 [  300.642307] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
 [  301.050296] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
 [  301.054897] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
 [  301.056934] uvcvideo 1-1:1.2: usb_probe_interface
 [  301.058072] uvcvideo 1-1:1.2: usb_probe_interface - got id
 [  301.059395] uvcvideo: Found UVC 1.00 device unnamed (046d:081d)
 [  301.090173] input: UVC Camera (046d:081d) as 
 /devices/pci:00/:00:1f.5/usb1/1-1/1-1:1.2/input/input7

That seems to be a Logitech model.

 [  301.111289] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
 [  301.131207] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.137066] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.156451] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 [  301.158310] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.160238] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.196606] set resolution quirk: cval-res = 384
 [  371.309569] e1000: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow 
 Control: RX
 [  390.729568] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 f5ade900 2296555[  390.730023] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 
 us]
 437 S Ii:1:003:7[  390.736394] usb 1-1: unlink qh16-0001/f48d64c0 start 2 
 [1/0 us]
  -115:128 16 
 f5ade900 2296566256 C Ii:1:003:7 -2:128 0
 [  391.100896] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 [  391.103188] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 f5ade900 2296926929 S Ii:1:003:7[  391.104889] usb 1-1: unlink 
 qh16-0001/f48d64c0 start 2 [1/0 us]
  -115:128 16 
 

Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Borislav Petkov
On Sun, Oct 21, 2012 at 01:57:21AM +, Artem S. Tashkinov wrote:
 The freeze happens on my *host* Linux PC. For an experiment I decided
 to check if I could reproduce the freeze under a virtual machine - it
 turns out the Linux kernel running under it also freezes.

I know that - but a freeze != oops - at least not necessarily. Which
means it could very well be a different issue now that vbox is gone.

Or, it could be the same issue with different incarnations: with vbox
you get the corruptions and without it, you get the freezes. I'm
assuming you do the same flash player thing in both cases?

Here's a crazy idea: can you try to reproduce it in KVM?

Thanks.

-- 
Regards/Gruss,
Boris.
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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 12:34, Daniel Mack wrote:
 On 21.10.2012 01:15, Artem S. Tashkinov wrote:
 You don't get me - I have *no* VirtualBox (or any proprietary) modules 
 running
 - but I can reproduce this problem using *the same system running under* 
 VirtualBox
 in Windows 7 64.

 It's almost definitely either a USB driver bug or video4linux driver bug:

 I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
 here:
 https://lkml.org/lkml/2012/10/20/35
 https://lkml.org/lkml/2012/10/20/148

 Here are  the last lines from my dmesg (with usbmon loaded):

 [  292.164833] hub 1-0:1.0: state 7 ports 8 chg  evt 0002
 [  292.168091] ehci_hcd :00:1f.5: GetStatus port:1 status 00100a 0  ACK 
 POWER sig=se0 PEC CSC
 [  292.172063] hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
 [  292.174883] usb 1-1: USB disconnect, device number 2
 [  292.178045] usb 1-1: unregistering device
 [  292.183539] usb 1-1: unregistering interface 1-1:1.0
 [  292.197034] usb 1-1: unregistering interface 1-1:1.1
 [  292.204317] usb 1-1: unregistering interface 1-1:1.2
 [  292.234519] usb 1-1: unregistering interface 1-1:1.3
 [  292.236175] usb 1-1: usb_disable_device nuking all URBs
 [  292.364429] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms 
 status 0x100
 [  294.364279] hub 1-0:1.0: hub_suspend
 [  294.366045] usb usb1: bus auto-suspend, wakeup 1
 [  294.367375] ehci_hcd :00:1f.5: suspend root hub
 [  296.501084] usb usb1: usb wakeup-resume
 [  296.508311] usb usb1: usb auto-resume
 [  296.509833] ehci_hcd :00:1f.5: resume root hub
 [  296.560149] hub 1-0:1.0: hub_resume
 [  296.562240] ehci_hcd :00:1f.5: GetStatus port:1 status 001003 0  ACK 
 POWER sig=se0 CSC CONNECT
 [  296.566141] hub 1-0:1.0: port 1: status 0501 change 0001
 [  296.670413] hub 1-0:1.0: state 7 ports 8 chg 0002 evt 
 [  296.673222] hub 1-0:1.0: port 1, status 0501, change , 480 Mb/s
 [  297.311720] usb 1-1: new high-speed USB device number 3 using ehci_hcd
 [  300.547237] usb 1-1: skipped 1 descriptor after configuration
 [  300.549443] usb 1-1: skipped 4 descriptors after interface
 [  300.552273] usb 1-1: skipped 2 descriptors after interface
 [  300.556499] usb 1-1: skipped 1 descriptor after endpoint
 [  300.559392] usb 1-1: skipped 2 descriptors after interface
 [  300.560960] usb 1-1: skipped 1 descriptor after endpoint
 [  300.562169] usb 1-1: skipped 2 descriptors after interface
 [  300.563440] usb 1-1: skipped 1 descriptor after endpoint
 [  300.564639] usb 1-1: skipped 2 descriptors after interface
 [  300.565828] usb 1-1: skipped 2 descriptors after endpoint
 [  300.567084] usb 1-1: skipped 9 descriptors after interface
 [  300.569205] usb 1-1: skipped 1 descriptor after endpoint
 [  300.570484] usb 1-1: skipped 53 descriptors after interface
 [  300.595843] usb 1-1: default language 0x0409
 [  300.602503] usb 1-1: USB interface quirks for this device: 2
 [  300.605700] usb 1-1: udev 3, busnum 1, minor = 2
 [  300.606959] usb 1-1: New USB device found, idVendor=046d, idProduct=081d
 [  300.610298] usb 1-1: New USB device strings: Mfr=0, Product=0, 
 SerialNumber=1
 [  300.613742] usb 1-1: SerialNumber: 48C5D2B0
 [  300.617703] usb 1-1: usb_probe_device
 [  300.620594] usb 1-1: configuration #1 chosen from 1 choice
 [  300.639218] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
 [  300.640736] snd-usb-audio 1-1:1.0: usb_probe_interface
 [  300.642307] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
 [  301.050296] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
 [  301.054897] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
 [  301.056934] uvcvideo 1-1:1.2: usb_probe_interface
 [  301.058072] uvcvideo 1-1:1.2: usb_probe_interface - got id
 [  301.059395] uvcvideo: Found UVC 1.00 device unnamed (046d:081d)
 [  301.090173] input: UVC Camera (046d:081d) as 
 /devices/pci:00/:00:1f.5/usb1/1-1/1-1:1.2/input/input7
 
 That seems to be a Logitech model.
 
 [  301.111289] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
 [  301.131207] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.137066] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.156451] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 [  301.158310] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.160238] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.196606] set resolution quirk: cval-res = 384
 [  371.309569] e1000: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow 
 Control: RX
 [  390.729568] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 f5ade900 2296555[  390.730023] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 
 us]
 437 S Ii:1:003:7[  390.736394] usb 1-1: unlink qh16-0001/f48d64c0 start 2 
 [1/0 us]
  -115:128 16 
 f5ade900 2296566256 C Ii:1:003:7 -2:128 0
 [  391.100896] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 [  391.103188] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 f5ade900 2296926929 S Ii:1:003:7[  391.104889] usb 1-1: unlink 
 

Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Artem S. Tashkinov
On Oct 21, 2012, Borislav Petkov wrote:

 On Sun, Oct 21, 2012 at 01:57:21AM +, Artem S. Tashkinov wrote:
  The freeze happens on my *host* Linux PC. For an experiment I decided
  to check if I could reproduce the freeze under a virtual machine - it
  turns out the Linux kernel running under it also freezes.

 I know that - but a freeze != oops - at least not necessarily. Which
 means it could very well be a different issue now that vbox is gone.

 Or, it could be the same issue with different incarnations: with vbox
 you get the corruptions and without it, you get the freezes. I'm
 assuming you do the same flash player thing in both cases?

 Here's a crazy idea: can you try to reproduce it in KVM?

OK, dismiss VBox altogether - it has a very buggy USB implementation, thus
it just hangs when trying to access my webcam.

What I've found out is that my system crashes *only* when I try to enable
usb-audio (from the same webcam) - I still have no idea how to capture a
panic message, but I ran

while :; do dmesg -c; done in xterm, then I got like thousands of messages
and I photographed my monitor:

http://imageshack.us/a/img685/9452/panicz.jpg

list_del corruption. prev-next should be ... but was ...

I cannot show you more as I have no serial console to use :( and the kernel
doesn't have enough time to push error messages to rsyslog and fsync
/var/log/messages
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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 13:59, Artem S. Tashkinov wrote:
 On Oct 21, 2012, Borislav Petkov wrote:

 On Sun, Oct 21, 2012 at 01:57:21AM +, Artem S. Tashkinov wrote:
 The freeze happens on my *host* Linux PC. For an experiment I decided
 to check if I could reproduce the freeze under a virtual machine - it
 turns out the Linux kernel running under it also freezes.

 I know that - but a freeze != oops - at least not necessarily. Which
 means it could very well be a different issue now that vbox is gone.

 Or, it could be the same issue with different incarnations: with vbox
 you get the corruptions and without it, you get the freezes. I'm
 assuming you do the same flash player thing in both cases?

 Here's a crazy idea: can you try to reproduce it in KVM?
 
 OK, dismiss VBox altogether - it has a very buggy USB implementation, thus
 it just hangs when trying to access my webcam.

Ok.

 What I've found out is that my system crashes *only* when I try to enable
 usb-audio (from the same webcam) - I still have no idea how to capture a
 panic message, but I ran
 
 while :; do dmesg -c; done in xterm, then I got like thousands of messages
 and I photographed my monitor:
 
 http://imageshack.us/a/img685/9452/panicz.jpg

A hint at least. How did you enable the audio record exactly? Can you
reproduce this with arecord?

What chipset are you on? Please provide both lspci -v and lsusb -v
dumps. As I said, I fail to reproduce that issue on any of my machines.


Daniel

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 13:59, Artem S. Tashkinov wrote:
 On Oct 21, 2012, Borislav Petkov wrote:

 On Sun, Oct 21, 2012 at 01:57:21AM +, Artem S. Tashkinov wrote:
 The freeze happens on my *host* Linux PC. For an experiment I decided
 to check if I could reproduce the freeze under a virtual machine - it
 turns out the Linux kernel running under it also freezes.

 I know that - but a freeze != oops - at least not necessarily. Which
 means it could very well be a different issue now that vbox is gone.

 Or, it could be the same issue with different incarnations: with vbox
 you get the corruptions and without it, you get the freezes. I'm
 assuming you do the same flash player thing in both cases?

 Here's a crazy idea: can you try to reproduce it in KVM?
 
 OK, dismiss VBox altogether - it has a very buggy USB implementation, thus
 it just hangs when trying to access my webcam.
 
 What I've found out is that my system crashes *only* when I try to enable
 usb-audio (from the same webcam)

It would also be interesting to know whether you have problems with
*only* the video capture, with some tool like cheese. It might be
you're hitting a host controller issue here, and then isochronous input
packets on the video interface would most likely also trigger such am
effect. Actually, knowing whether that's the case would be crucial for
further debugging.


Daniel

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Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Artem S. Tashkinov
On Oct 21, 2012, Daniel Mack wrote: 

 A hint at least. How did you enable the audio record exactly? Can you
 reproduce this with arecord?
 
 What chipset are you on? Please provide both lspci -v and lsusb -v
 dumps. As I said, I fail to reproduce that issue on any of my machines.

All other applications can read from the USB audio without problems, it's
just something in the way Adobe Flash polls my audio input which causes
a crash.

Just video capture (without audio) works just fine in Adobe Flash.

Only and only when I choose to use 

USB Device 0x46d:0x81d my system crashes in Adobe Flash.

See the screenshot:

https://bugzilla.kernel.org/attachment.cgi?id=84151

My hardware information can be fetched from here:

https://bugzilla.kernel.org/show_bug.cgi?id=49181

On a second thought that can be even an ALSA crash or pretty much
anything else.
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Re: was: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
[Cc: alsa-devel]

On 21.10.2012 14:30, Artem S. Tashkinov wrote:
 On Oct 21, 2012, Daniel Mack wrote: 
 
 A hint at least. How did you enable the audio record exactly? Can you
 reproduce this with arecord?

 What chipset are you on? Please provide both lspci -v and lsusb -v
 dumps. As I said, I fail to reproduce that issue on any of my machines.
 
 All other applications can read from the USB audio without problems, it's
 just something in the way Adobe Flash polls my audio input which causes
 a crash.
 
 Just video capture (without audio) works just fine in Adobe Flash.

Ok, so that pretty much rules out the host controller. I just wonder why
I still don't see it here, and I haven't heard of any such problem from
anyone else.

Some more questions:

- Which version of Flash are you running?
- Does this also happen with Firefox?
- Does flash access the device directly or via PulseAudio?
- Could you please apply the attached patch and see what it spits out to
dmesg once Flash opens the device? It returns -EINVAL in the hw_params
callback to prevent the actual streaming. On my machine with Flash
11.4.31.110, I get values of 2/44800/1/32768/2048/0, which seems sane.
Or does your machine still crash before anything is written to the logs?

 Only and only when I choose to use 
 
 USB Device 0x46d:0x81d my system crashes in Adobe Flash.

 See the screenshot:
 
 https://bugzilla.kernel.org/attachment.cgi?id=84151

When exactly does the crash happen? Right after you selected that entry
from the list? There's a little recording level meter in that dialog.
Does that show any input from the microphone?

 My hardware information can be fetched from here:
 
 https://bugzilla.kernel.org/show_bug.cgi?id=49181
 
 On a second thought that can be even an ALSA crash or pretty much
 anything else.

We'll see. Thanks for your help to sort this out!


Daniel



diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index f782ce1..5664b45 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -453,6 +453,18 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
 	unsigned int channels, rate, format;
 	int ret, changed;
 
+
+	printk( %s()\n, __func__);
+
+	printk(format: %d\n, params_format(hw_params));
+	printk(rate: %d\n, params_rate(hw_params));
+	printk(channels: %d\n, params_channels(hw_params));
+	printk(buffer bytes: %d\n, params_buffer_bytes(hw_params));
+	printk(period bytes: %d\n, params_period_bytes(hw_params));
+	printk(access: %d\n, params_access(hw_params));
+
+	return -EINVAL;
+
 	ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
 	   params_buffer_bytes(hw_params));
 	if (ret  0)


Re: Re: was: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Artem S. Tashkinov
 On Oct 21, 2012, Daniel Mack  wrote: 
 
 [Cc: alsa-devel]
 
 On 21.10.2012 14:30, Artem S. Tashkinov wrote:
  On Oct 21, 2012, Daniel Mack wrote: 
  
  A hint at least. How did you enable the audio record exactly? Can you
  reproduce this with arecord?
 
  What chipset are you on? Please provide both lspci -v and lsusb -v
  dumps. As I said, I fail to reproduce that issue on any of my machines.
  
  All other applications can read from the USB audio without problems, it's
  just something in the way Adobe Flash polls my audio input which causes
  a crash.
  
  Just video capture (without audio) works just fine in Adobe Flash.
 
 Ok, so that pretty much rules out the host controller. I just wonder why
 I still don't see it here, and I haven't heard of any such problem from
 anyone else.
 
 Some more questions:
 
 - Which version of Flash are you running?

Google Chrome has its own version of Adobe Flash:

Name:   Shockwave Flash
Description:Shockwave Flash 11.4 r31
Version:11.4.31.110

 - Does this also happen with Firefox?

No, Adobe Flash in Firefox is an older version (Shockwave Flash 11.1 r102), it 
shows
just two input devices instead of three which the newer Flash players sees.

* HDA Intel PCH
* USB Device 0x46d:0x81d

 - Does flash access the device directly or via PulseAudio?

PA is not installed on my computer, so Flash accesses it directly via ALSA 
calls.

 - Could you please apply the attached patch and see what it spits out to
 dmesg once Flash opens the device? It returns -EINVAL in the hw_params
 callback to prevent the actual streaming. On my machine with Flash
 11.4.31.110, I get values of 2/44800/1/32768/2048/0, which seems sane.
 Or does your machine still crash before anything is written to the logs?

I will try it a bit later.

  Only and only when I choose to use 
  
  USB Device 0x46d:0x81d my system crashes in Adobe Flash.
 
  See the screenshot:
  
  https://bugzilla.kernel.org/attachment.cgi?id=84151
 
 When exactly does the crash happen? Right after you selected that entry
 from the list? There's a little recording level meter in that dialog.
 Does that show any input from the microphone?

Yes, right after I select it and move the mouse cursor away from this combobox
so that this selection becomes active.

  My hardware information can be fetched from here:
  
  https://bugzilla.kernel.org/show_bug.cgi?id=49181
  
  On a second thought that can be even an ALSA crash or pretty much
  anything else.
 
 We'll see. Thanks for your help to sort this out!

Thank you for your assistance!
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Re: was: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 16:57, Artem S. Tashkinov wrote:
 On Oct 21, 2012, Daniel Mack  wrote: 

 [Cc: alsa-devel]

 On 21.10.2012 14:30, Artem S. Tashkinov wrote:
 On Oct 21, 2012, Daniel Mack wrote: 

 A hint at least. How did you enable the audio record exactly? Can you
 reproduce this with arecord?

 What chipset are you on? Please provide both lspci -v and lsusb -v
 dumps. As I said, I fail to reproduce that issue on any of my machines.

 All other applications can read from the USB audio without problems, it's
 just something in the way Adobe Flash polls my audio input which causes
 a crash.

 Just video capture (without audio) works just fine in Adobe Flash.

 Ok, so that pretty much rules out the host controller. I just wonder why
 I still don't see it here, and I haven't heard of any such problem from
 anyone else.

 Some more questions:

 - Which version of Flash are you running?
 
 Google Chrome has its own version of Adobe Flash:
 
 Name: Shockwave Flash
 Description:  Shockwave Flash 11.4 r31
 Version:  11.4.31.110

So that's the same that I'm using.

 - Does this also happen with Firefox?
 
 No, Adobe Flash in Firefox is an older version (Shockwave Flash 11.1 r102), 
 it shows
 just two input devices instead of three which the newer Flash players sees.
 
 * HDA Intel PCH
 * USB Device 0x46d:0x81d

And that works, I assume? Does the second choice in the newer Flash
version work maybe?

 - Does flash access the device directly or via PulseAudio?
 
 PA is not installed on my computer, so Flash accesses it directly via ALSA 
 calls.

Ok, Same here.

 - Could you please apply the attached patch and see what it spits out to
 dmesg once Flash opens the device? It returns -EINVAL in the hw_params
 callback to prevent the actual streaming. On my machine with Flash
 11.4.31.110, I get values of 2/44800/1/32768/2048/0, which seems sane.
 Or does your machine still crash before anything is written to the logs?
 
 I will try it a bit later.

Yes, we need to trace the call chain and see at which point the trouble
starts. What could help is tracing the google-chrome binary with strace
maybe. At least we would see the ioctl command sequence, if the log file
survives the crash.

As the usb list is still in Cc: - Artem's lcpci dump shows that his
machine features XHCI controllers. Can anyone think of a relation to
this problem?

And Artem, is there any way you boot your system on an older machine
that only has EHCI ports? Thinking about it, I wonder whether the freeze
in VBox and the crashes on native hardware have the same root cause. In
that case, would it be possible to share that VBox image?


Daniel

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Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Alan Stern
On Sun, 21 Oct 2012, Artem S. Tashkinov wrote:

 What I've found out is that my system crashes *only* when I try to enable
 usb-audio (from the same webcam) - I still have no idea how to capture a
 panic message, but I ran
 
 while :; do dmesg -c; done in xterm, then I got like thousands of messages
 and I photographed my monitor:
 
 http://imageshack.us/a/img685/9452/panicz.jpg
 
 list_del corruption. prev-next should be ... but was ...
 
 I cannot show you more as I have no serial console to use :( and the kernel
 doesn't have enough time to push error messages to rsyslog and fsync
 /var/log/messages

Is it possible to use netconsole?  The screenshot above appears to be 
the end of a long series of error messages, which isn't too useful.  
The most important information is in the first error.

Alan Stern

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Re: was: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Alan Stern
On Sun, 21 Oct 2012, Daniel Mack wrote:

 As the usb list is still in Cc: - Artem's lcpci dump shows that his
 machine features XHCI controllers. Can anyone think of a relation to
 this problem?
 
 And Artem, is there any way you boot your system on an older machine
 that only has EHCI ports? Thinking about it, I wonder whether the freeze
 in VBox and the crashes on native hardware have the same root cause. In
 that case, would it be possible to share that VBox image?

Don't grasp at straws.  All of the kernel logs Artem has posted show 
ehci-hcd; none of them show xhci-hcd.  Therefore the xHCI controller is 
highly unlikely to be involved.

Alan Stern

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Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Borislav Petkov
On Sun, Oct 21, 2012 at 11:59:36AM +, Artem S. Tashkinov wrote:
 http://imageshack.us/a/img685/9452/panicz.jpg
 
 list_del corruption. prev-next should be ... but was ...

Btw, this is one of the debug options I told you to enable.

 I cannot show you more as I have no serial console to use :( and the kernel
 doesn't have enough time to push error messages to rsyslog and fsync
 /var/log/messages

I already told you how to catch that oops: boot with pause_on_oops=600
on the kernel command line and photograph the screen when the first oops
happens. This'll show us where the problem begins.

-- 
Regards/Gruss,
Boris.
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Re: Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Artem S. Tashkinov
 
 On Oct 21, 2012, Borislav Petkov b...@alien8.de wrote: 
 
 On Sun, Oct 21, 2012 at 11:59:36AM +, Artem S. Tashkinov wrote:
  http://imageshack.us/a/img685/9452/panicz.jpg
  
  list_del corruption. prev-next should be ... but was ...
 
 Btw, this is one of the debug options I told you to enable.
 
  I cannot show you more as I have no serial console to use :( and the kernel
  doesn't have enough time to push error messages to rsyslog and fsync
  /var/log/messages
 
 I already told you how to catch that oops: boot with pause_on_oops=600
 on the kernel command line and photograph the screen when the first oops
 happens. This'll show us where the problem begins.

This option didn't have any effect, or maybe it's because it's such a serious 
crash
the kernel has no time to actually print an ooops/panic message.

dmesg messages up to a crash can be seen here: 
https://bugzilla.kernel.org/attachment.cgi?id=84221

I dumped them using this application:

$ cat scat.c

#include stdio.h
#include stdlib.h
#include unistd.h
#include string.h
#include sys/types.h
#include sys/stat.h
#include fcntl.h

#define O_LARGEFILE 010
#define BUFFER 4096
#define __USE_FILE_OFFSET64 1
#define __USE_LARGEFILE64 1

int main(int argc, char *argv[])
{
int fd_out;
int64_t bytes_read;
void *buffer;

if (argc!=2) {
printf(Usage is: scat destination\n);
return 1;
}

buffer = malloc(BUFFER * sizeof(char));
if (buffer == NULL) {
printf(Error: can't allocate buffers\n);
return 2;   
}
memset(buffer, 0, BUFFER);

printf(Dumping to \%s\ ... , argv[1]);
fflush(NULL);

if ((fd_out = open64(argv[1], O_WRONLY | O_LARGEFILE | O_SYNC | 
O_NOFOLLOW, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) == -1) {
printf(Error: destination file can't be created\n);
perror(open() );
return 2;
}

bytes_read = 1;

while (bytes_read) {
bytes_read = fread(buffer, sizeof(char), BUFFER, stdin);

if (write(fd_out, (void *) buffer, bytes_read) != bytes_read)
{
printf(Error: can't write data to the destination 
file! Possibly a target disk is full\n);
return 3;
}

}

close(fd_out);

printf( OK\n);
return 0;
}


I ran it this way: while :; do dmesg -c; done | scat /dev/sda11 (yes, straight 
to a hdd partition to eliminate a FS cache)

Don't judge me harshly - I'm not a programmer.

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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 21:49, Artem S. Tashkinov wrote:

 On Oct 21, 2012, Borislav Petkov b...@alien8.de wrote: 

 On Sun, Oct 21, 2012 at 11:59:36AM +, Artem S. Tashkinov wrote:
 http://imageshack.us/a/img685/9452/panicz.jpg

 list_del corruption. prev-next should be ... but was ...

 Btw, this is one of the debug options I told you to enable.

 I cannot show you more as I have no serial console to use :( and the kernel
 doesn't have enough time to push error messages to rsyslog and fsync
 /var/log/messages

 I already told you how to catch that oops: boot with pause_on_oops=600
 on the kernel command line and photograph the screen when the first oops
 happens. This'll show us where the problem begins.
 
 This option didn't have any effect, or maybe it's because it's such a serious 
 crash
 the kernel has no time to actually print an ooops/panic message.
 
 dmesg messages up to a crash can be seen here: 
 https://bugzilla.kernel.org/attachment.cgi?id=84221

Nice. Could you do that again with the patch applied I sent yo some
hours ago?


Thanks,
Daniel

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Re: Re: Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Borislav Petkov
On Sun, Oct 21, 2012 at 07:49:01PM +, Artem S. Tashkinov wrote:
 I ran it this way: while :; do dmesg -c; done | scat /dev/sda11 (yes,
 straight to a hdd partition to eliminate a FS cache)

Well, I'm no fs guy but this should still go through the buffer cache. I
think the O_SYNC flag makes sure it all lands on the partition in time.
Oh well, it doesn't matter.

 Don't judge me harshly - I'm not a programmer.

If you wrote that and you're not a programmer, it certainly looks cool,
good job!.

 [ Btw, don't forget to free(buffer) at the end. ]

Also, there was a patchset recently which added a blockconsole method to
the kernel with which you can do something like that in a generic way.

Back to the issue at hand: it looks like ehci_hcd is causing some list
corruptions, maybe coming from the uvcvideo or whatever. I think the usb
people will have a better idea.

Btw, is there any particular reason you're running a 32-bit kernel?

Thanks.

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Regards/Gruss,
Boris.
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Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Artem S. Tashkinov
 Nice. Could you do that again with the patch applied I sent yo some
 hours ago?

That patch was of no help - the system has crashed and I couldn't spot relevant
messages.

I've no idea what it means.

Artem
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Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-21 Thread Daniel Mack
On 21.10.2012 22:43, Artem S. Tashkinov wrote:
 Nice. Could you do that again with the patch applied I sent yo some
 hours ago?
 
 That patch was of no help - the system has crashed and I couldn't spot 
 relevant
 messages.
 
 I've no idea what it means.

The sequence of driver callbacks issued on a stream start is

 .open()
 .hw_params()
 .prepare()
 .trigger()

If the ALSA part really causes this issue, the bad things happen either
in any of the driver callback functions or in the core underneath.

The patch I sent returns an error from the hw_params callback, and as
you still see the problem, that means that the crash happens before any
of the USB audio streaming really starts.

Could you try and return -EINVAL from snd_usb_capture_open() please?

If anyone has a better idea on how to debug this, please chime in.


Daniel

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Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-20 Thread Artem S. Tashkinov
You don't get me - I have *no* VirtualBox (or any proprietary) modules running
- but I can reproduce this problem using *the same system running under* 
VirtualBox
in Windows 7 64.

It's almost definitely either a USB driver bug or video4linux driver bug:

I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
here:
https://lkml.org/lkml/2012/10/20/35
https://lkml.org/lkml/2012/10/20/148

Here are  the last lines from my dmesg (with usbmon loaded):

[  292.164833] hub 1-0:1.0: state 7 ports 8 chg  evt 0002
[  292.168091] ehci_hcd :00:1f.5: GetStatus port:1 status 00100a 0  ACK 
POWER sig=se0 PEC CSC
[  292.172063] hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
[  292.174883] usb 1-1: USB disconnect, device number 2
[  292.178045] usb 1-1: unregistering device
[  292.183539] usb 1-1: unregistering interface 1-1:1.0
[  292.197034] usb 1-1: unregistering interface 1-1:1.1
[  292.204317] usb 1-1: unregistering interface 1-1:1.2
[  292.234519] usb 1-1: unregistering interface 1-1:1.3
[  292.236175] usb 1-1: usb_disable_device nuking all URBs
[  292.364429] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 
0x100
[  294.364279] hub 1-0:1.0: hub_suspend
[  294.366045] usb usb1: bus auto-suspend, wakeup 1
[  294.367375] ehci_hcd :00:1f.5: suspend root hub
[  296.501084] usb usb1: usb wakeup-resume
[  296.508311] usb usb1: usb auto-resume
[  296.509833] ehci_hcd :00:1f.5: resume root hub
[  296.560149] hub 1-0:1.0: hub_resume
[  296.562240] ehci_hcd :00:1f.5: GetStatus port:1 status 001003 0  ACK 
POWER sig=se0 CSC CONNECT
[  296.566141] hub 1-0:1.0: port 1: status 0501 change 0001
[  296.670413] hub 1-0:1.0: state 7 ports 8 chg 0002 evt 
[  296.673222] hub 1-0:1.0: port 1, status 0501, change , 480 Mb/s
[  297.311720] usb 1-1: new high-speed USB device number 3 using ehci_hcd
[  300.547237] usb 1-1: skipped 1 descriptor after configuration
[  300.549443] usb 1-1: skipped 4 descriptors after interface
[  300.552273] usb 1-1: skipped 2 descriptors after interface
[  300.556499] usb 1-1: skipped 1 descriptor after endpoint
[  300.559392] usb 1-1: skipped 2 descriptors after interface
[  300.560960] usb 1-1: skipped 1 descriptor after endpoint
[  300.562169] usb 1-1: skipped 2 descriptors after interface
[  300.563440] usb 1-1: skipped 1 descriptor after endpoint
[  300.564639] usb 1-1: skipped 2 descriptors after interface
[  300.565828] usb 1-1: skipped 2 descriptors after endpoint
[  300.567084] usb 1-1: skipped 9 descriptors after interface
[  300.569205] usb 1-1: skipped 1 descriptor after endpoint
[  300.570484] usb 1-1: skipped 53 descriptors after interface
[  300.595843] usb 1-1: default language 0x0409
[  300.602503] usb 1-1: USB interface quirks for this device: 2
[  300.605700] usb 1-1: udev 3, busnum 1, minor = 2
[  300.606959] usb 1-1: New USB device found, idVendor=046d, idProduct=081d
[  300.610298] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[  300.613742] usb 1-1: SerialNumber: 48C5D2B0
[  300.617703] usb 1-1: usb_probe_device
[  300.620594] usb 1-1: configuration #1 chosen from 1 choice
[  300.639218] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
[  300.640736] snd-usb-audio 1-1:1.0: usb_probe_interface
[  300.642307] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
[  301.050296] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
[  301.054897] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
[  301.056934] uvcvideo 1-1:1.2: usb_probe_interface
[  301.058072] uvcvideo 1-1:1.2: usb_probe_interface - got id
[  301.059395] uvcvideo: Found UVC 1.00 device unnamed (046d:081d)
[  301.090173] input: UVC Camera (046d:081d) as 
/devices/pci:00/:00:1f.5/usb1/1-1/1-1:1.2/input/input7
[  301.111289] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
[  301.131207] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
[  301.137066] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
[  301.156451] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
[  301.158310] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
[  301.160238] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
[  301.196606] set resolution quirk: cval-res = 384
[  371.309569] e1000: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: 
RX
[  390.729568] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
f5ade900 2296555[  390.730023] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
437 S Ii:1:003:7[  390.736394] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 
us]
 -115:128 16 
f5ade900 2296566256 C Ii:1:003:7 -2:128 0
[  391.100896] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
[  391.103188] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
f5ade900 2296926929 S Ii:1:003:7[  391.104889] usb 1-1: unlink 
qh16-0001/f48d64c0 start 2 [1/0 us]
 -115:128 16 
f5ade900 2296937889 C Ii:1:003:7 -2:128 0
f5272300 2310382508 S Co:1:003:0 s 01 0b 0004 0001  0
f5272300 2310407888 C Co:1:003:0 0 0
f5272300 2310408051 S Co:1:003:0 s 22 01 0100 

Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-20 Thread Borislav Petkov
On Sat, Oct 20, 2012 at 11:15:17PM +, Artem S. Tashkinov wrote:
 You don't get me - I have *no* VirtualBox (or any proprietary) modules
 running

Ok, good. We got that out of the way - I wanted to make sure after you
replied with two other possibilities of the system freezing.

 - but I can reproduce this problem using *the same system running
 under* VirtualBox in Windows 7 64.

That's windoze as host and linux as a guest, correct?

If so, that's virtualbox's problem, I'd say.

 It's almost definitely either a USB driver bug or video4linux driver
 bug:

And you're assuming that because the freeze happens when using your usb
webcam, correct? And not otherwise?

Maybe you can describe in more detail what exactly you're doing so that
people could try to reproduce your issue.

 I'm CC'ing linux-media and linux-usb mailing lists, the problem is described 
 here:
 https://lkml.org/lkml/2012/10/20/35
 https://lkml.org/lkml/2012/10/20/148

Yes, good idea. Maybe the folks there have some more ideas how to debug
this.

I'm leaving in the rest for reference.

What should be pointed out, though, is that you don't have any more
random corruptions causing oopses now that virtualbox is gone. The
freeze below is a whole another issue.

Thanks.

 Here are  the last lines from my dmesg (with usbmon loaded):
 
 [  292.164833] hub 1-0:1.0: state 7 ports 8 chg  evt 0002
 [  292.168091] ehci_hcd :00:1f.5: GetStatus port:1 status 00100a 0  ACK 
 POWER sig=se0 PEC CSC
 [  292.172063] hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
 [  292.174883] usb 1-1: USB disconnect, device number 2
 [  292.178045] usb 1-1: unregistering device
 [  292.183539] usb 1-1: unregistering interface 1-1:1.0
 [  292.197034] usb 1-1: unregistering interface 1-1:1.1
 [  292.204317] usb 1-1: unregistering interface 1-1:1.2
 [  292.234519] usb 1-1: unregistering interface 1-1:1.3
 [  292.236175] usb 1-1: usb_disable_device nuking all URBs
 [  292.364429] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 
 0x100
 [  294.364279] hub 1-0:1.0: hub_suspend
 [  294.366045] usb usb1: bus auto-suspend, wakeup 1
 [  294.367375] ehci_hcd :00:1f.5: suspend root hub
 [  296.501084] usb usb1: usb wakeup-resume
 [  296.508311] usb usb1: usb auto-resume
 [  296.509833] ehci_hcd :00:1f.5: resume root hub
 [  296.560149] hub 1-0:1.0: hub_resume
 [  296.562240] ehci_hcd :00:1f.5: GetStatus port:1 status 001003 0  ACK 
 POWER sig=se0 CSC CONNECT
 [  296.566141] hub 1-0:1.0: port 1: status 0501 change 0001
 [  296.670413] hub 1-0:1.0: state 7 ports 8 chg 0002 evt 
 [  296.673222] hub 1-0:1.0: port 1, status 0501, change , 480 Mb/s
 [  297.311720] usb 1-1: new high-speed USB device number 3 using ehci_hcd
 [  300.547237] usb 1-1: skipped 1 descriptor after configuration
 [  300.549443] usb 1-1: skipped 4 descriptors after interface
 [  300.552273] usb 1-1: skipped 2 descriptors after interface
 [  300.556499] usb 1-1: skipped 1 descriptor after endpoint
 [  300.559392] usb 1-1: skipped 2 descriptors after interface
 [  300.560960] usb 1-1: skipped 1 descriptor after endpoint
 [  300.562169] usb 1-1: skipped 2 descriptors after interface
 [  300.563440] usb 1-1: skipped 1 descriptor after endpoint
 [  300.564639] usb 1-1: skipped 2 descriptors after interface
 [  300.565828] usb 1-1: skipped 2 descriptors after endpoint
 [  300.567084] usb 1-1: skipped 9 descriptors after interface
 [  300.569205] usb 1-1: skipped 1 descriptor after endpoint
 [  300.570484] usb 1-1: skipped 53 descriptors after interface
 [  300.595843] usb 1-1: default language 0x0409
 [  300.602503] usb 1-1: USB interface quirks for this device: 2
 [  300.605700] usb 1-1: udev 3, busnum 1, minor = 2
 [  300.606959] usb 1-1: New USB device found, idVendor=046d, idProduct=081d
 [  300.610298] usb 1-1: New USB device strings: Mfr=0, Product=0, 
 SerialNumber=1
 [  300.613742] usb 1-1: SerialNumber: 48C5D2B0
 [  300.617703] usb 1-1: usb_probe_device
 [  300.620594] usb 1-1: configuration #1 chosen from 1 choice
 [  300.639218] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
 [  300.640736] snd-usb-audio 1-1:1.0: usb_probe_interface
 [  300.642307] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
 [  301.050296] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
 [  301.054897] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
 [  301.056934] uvcvideo 1-1:1.2: usb_probe_interface
 [  301.058072] uvcvideo 1-1:1.2: usb_probe_interface - got id
 [  301.059395] uvcvideo: Found UVC 1.00 device unnamed (046d:081d)
 [  301.090173] input: UVC Camera (046d:081d) as 
 /devices/pci:00/:00:1f.5/usb1/1-1/1-1:1.2/input/input7
 [  301.111289] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
 [  301.131207] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.137066] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
 [  301.156451] ehci_hcd :00:1f.5: reused qh f48d64c0 schedule
 [  301.158310] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
 [  

Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-20 Thread Artem S. Tashkinov
 On Oct 21, 2012, Borislav Petkov wrote: 
 
 On Sat, Oct 20, 2012 at 11:15:17PM +, Artem S. Tashkinov wrote:
  You don't get me - I have *no* VirtualBox (or any proprietary) modules
  running
 
 Ok, good. We got that out of the way - I wanted to make sure after you
 replied with two other possibilities of the system freezing.
 
  - but I can reproduce this problem using *the same system running
  under* VirtualBox in Windows 7 64.
 
 That's windoze as host and linux as a guest, correct?

Exactly.

 If so, that's virtualbox's problem, I'd say.

I can reproduce it on my host *alone* as I said in the very first message - 
never
before I tried to run my Linux in a virtual machine. Please, just forget about
VirtualBox - it has nothing to do with this problem.

  It's almost definitely either a USB driver bug or video4linux driver
  bug:
 
 And you're assuming that because the freeze happens when using your usb
 webcam, correct? And not otherwise?

Yes, like I said earlier - only when I try to access its settings using Adobe 
Flash the
system crashes/freezes.

 Maybe you can describe in more detail what exactly you're doing so that
 people could try to reproduce your issue.

I don't think many people have the same webcam so it's going to be a problem. It
can be reproduced easily - just open Flash Settings in Google Chrome 22. The
crash will occur immediately.

  I'm CC'ing linux-media and linux-usb mailing lists, the problem is 
  described here:
  https://lkml.org/lkml/2012/10/20/35
  https://lkml.org/lkml/2012/10/20/148
 
 Yes, good idea. Maybe the folks there have some more ideas how to debug
 this.
 
 I'm leaving in the rest for reference.
 
 What should be pointed out, though, is that you don't have any more
 random corruptions causing oopses now that virtualbox is gone. The
 freeze below is a whole another issue.

The freeze happens on my *host* Linux PC. For an experiment I decided to
check if I could reproduce the freeze under a virtual machine - it turns out the
Linux kernel running under it also freezes.

Artem
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Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website

2012-10-20 Thread Alan Stern
On Sat, 20 Oct 2012, Artem S. Tashkinov wrote:

 You don't get me - I have *no* VirtualBox (or any proprietary) modules running
 - but I can reproduce this problem using *the same system running under* 
 VirtualBox
 in Windows 7 64.
 
 It's almost definitely either a USB driver bug or video4linux driver bug:

Does the same thing happen with earlier kernel versions?

What about if you unload snd-usb-audio or ehci-hcd?

Alan Stern

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