#11968 NORM Future : Possible skb leak in asix/usbnet (was: Page allocation failures upgrading XO-1.75 from 11.3.1)

[Zarro Boogs per Child]

#11968: Possible skb leak in asix/usbnet
---------------------------------+------------------------------------------
           Reporter:  greenfeld  |       Owner:  dsd                                         
               Type:  defect     |      Status:  assigned                                    
           Priority:  normal     |   Milestone:  Future Release                              
          Component:  kernel     |     Version:  1.75/1.5/1.0 Software Build os885 aka 11.3.1
         Resolution:             |    Keywords:                                              
        Next_action:  diagnose   |    Verified:  0                                           
Deployment_affected:             |   Blockedby:                                              
           Blocking:             |  
---------------------------------+------------------------------------------
Changes (by dsd):

  * milestone:  12.1.0 => Future Release


Comment:

 Here is the first failure from the pagealloz.gz attachment:

 {{{
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.425512] rsync: page allocation
 failure: order:0, mode:0x20
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.433168] [<c00369ac>]
 (unwind_backtrace+0x0/0x120) from [<c0091534>]
 (warn_alloc_failed+0xe0/0x104)
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.448274] [<c0091534>]
 (warn_alloc_failed+0xe0/0x104) from [<c00940bc>]
 (__alloc_pages_nodemask+0x528/0x580)
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.463394] [<c00940bc>]
 (__alloc_pages_nodemask+0x528/0x580) from [<c00b891c>]
 (cache_alloc_refill+0x2d8/0x5a4)
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.478567] [<c00b891c>]
 (cache_alloc_refill+0x2d8/0x5a4) from [<c00b8c70>] (__kmalloc+0x88/0xd8)
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.486395] [<c00b8c70>]
 (__kmalloc+0x88/0xd8) from [<c02b6bd0>] (__alloc_skb+0x48/0xd8)
 Jun 21 18:15:51 xo-74-34-46 kernel: [ 1162.494201] [<c02b6bd0>]
 (__alloc_skb+0x48/0xd8) from [<bf0b4090>] (rx_submit+0x24/0x328 [usbnet])
 }}}

 This means that there is a likelihood that usbnet/asix is leaking skbs.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11968#comment:3>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system