#11128 NORM 1.75-so: 1.75 oops: camera-related paging-request

Zarro Boogs per Child bugtracker at laptop.org
Tue Nov 1 06:58:10 EDT 2011


#11128: 1.75 oops: camera-related paging-request
--------------------------------+-------------------------------------------
           Reporter:  pgf       |       Owner:  corbet       
               Type:  defect    |      Status:  new          
           Priority:  normal    |   Milestone:  1.75-software
          Component:  kernel    |     Version:  1.75-B1      
         Resolution:            |    Keywords:               
        Next_action:  diagnose  |    Verified:  0            
Deployment_affected:            |   Blockedby:               
           Blocking:            |  
--------------------------------+-------------------------------------------

Comment(by devos):

 I just tried to reproduce the hang/panic that was described in
 http://lists.laptop.org/pipermail/devel/2011-October/033585.html. Instead
 of a hang/panic I got the same oops as listed in this ticket (and
 Telescope became unresponsive). This happened with the more recent kernel
 3.0.0_xo1.75-20111014.1021.olpc.3a188f1:
 {{{
 [  722.861911] vb2_dma_sg_alloc: Allocated buffer of 150 pages
 [  722.864303] vb2_dma_sg_alloc: Allocated buffer of 150 pages
 [  722.865436] vb2_common_vm_open: dd0f3d80, refcount: 1, vma:
 44bac000-44c42000
 [  722.866647] vb2_common_vm_open: dc12e640, refcount: 1, vma:
 46e00000-46e96000
 [  730.157328] vb2_common_vm_close: dd0f3d80, refcount: 2, vma:
 44bac000-44c42000
 [  730.157477] vb2_common_vm_close: dc12e640, refcount: 2, vma:
 46e00000-46e96000
 [  730.157477] mmp-camera mmp-camera.0: Release, 154 frames, 64 singles,
 153 delivered
 [  730.285201] vb2_dma_sg_put: Freeing buffer of 150 pages
 [  730.285201] vb2_dma_sg_put: Freeing buffer of 150 pages
 [  730.285604] vb2_dma_sg_alloc: Allocated buffer of 150 pages
 [  730.286167] vb2_dma_sg_alloc: Allocated buffer of 150 pages
 [  730.288049] vb2_common_vm_open: dc12e640, refcount: 1, vma:
 44bac000-44c42000
 [  730.288049] vb2_common_vm_open: dc5a0bc0, refcount: 1, vma:
 46e00000-46e96000
 [  730.355788] Unable to handle kernel paging request at virtual address
 33a08480
 [  730.363062] pgd = dc79c000
 [  730.366126] [33a08480] *pgd=00000000
 [  730.369686] Internal error: Oops: 815 [#1] PREEMPT
 [  730.374437] Modules linked in: fuse xt_tcpudp iptable_filter ip_tables
 x_tables uinput psmouse libertas_sdio libertas mousedev joydev ov7670
 mmp_camera videobuf2_core videobuf2_dma_sg videobuf2_memops [last
 unloaded: scsi_wait_scan]
 [  730.374437] CPU: 0    Not tainted
 (3.0.0_xo1.75-20111014.1021.olpc.3a188f1 #1)
 [  730.394937] PC is at v7_dma_inv_range+0x20/0x48
 [  730.402201] LR is at dma_cache_maint_page+0x2c/0x34
 [  730.406698] pc : [<c0039650>]    lr : [<c00365ac>]    psr: 20000013
 [  730.411540] sp : dcdf9c10  ip : 73a0849f  fp : dc464700
 [  730.422935] r10: bf00b3b8  r9 : dcdf9c78  r8 : 00000002
 [  730.422935] r7 : 00000002  r6 : 0000049f  r5 : 739e839e  r4 : c13bf100
 [  730.428121] r3 : 0000001f  r2 : 00000020  r1 : a73f083d  r0 : 33a08480
 [  730.434600] Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM
 Segment user
 [  730.441080] Control: 10c5387d  Table: 1c79c019  DAC: 00000015
 [  730.448162] Process camsrc:src (pid: 1205, stack limit = 0xdcdf82f8)
 [  730.453865] Stack: (0xdcdf9c10 to 0xdcdfa000)
 [  730.460171] 9c00:                                     00000002 c0036684
 c00396f0 0000049f
 [  730.464499] 9c20: 739e839e dfb4a000 00000001 c0538318 00000096 c003675c
 dc464408 dc63e638
 [  730.472618] 9c40: dc63e400 dcdf9e68 c0445611 bf010ffc dc464648 bf009d64
 00000000 00000000
 [  730.488865] 9c60: dc4646f8 00000000 00000000 00000000 00000000 00000000
 00000000 00000000
 [  730.496990] 9c80: 00000000 dc464790 dd14c360 dc464408 dcdf9e68 c0445611
 dc464408 dd14c360
 [  730.505116] 9ca0: bf010e6c bf010e9c bf0106e8 dcdf9e68 00000000 dc464498
 bf0122cc c02487f4
 [  730.513239] 9cc0: dcdf9e4c c01bd470 00000000 00000000 00003391 00000000
 1b478423 c0181058
 [  730.521364] 9ce0: dcdf9d1c dc7b2366 00000000 ffffffff dc7b2366 00000000
 ffffffff dcdf9d1c
 [  730.521364] 9d00: dc7b3000 c018227c 00000000 00000000 000200d0 00000008
 00000001 001e8480
 [  730.537611] 9d20: 00131d07 00000000 5b702c68 00000006 1e9c3ca6 00000003
 dc3e7ce0 c04ba4f8
 [  730.545736] 9d40: c04b4060 c04ba360 001fb8cb 00000000 cf93bdc3 00000003
 dc62d490 dc753ca0
 [  730.545736] 9d60: c04ba4f8 dc3e7ce0 dc753ca0 00000000 dcdf9da4 c003e00c
 cf93bdc3 00000003
 [  730.553860] 9d80: c002ad58 dc794000 c0035fdc c0064744 dcdf8000 dc62d460
 c04ba4b0 dc791440
 [  730.561986] 9da0: dcdf8000 c0064ab8 00000000 00000002 dc794000 dc79401c
 dc62d460 c0064af4
 [  730.578233] 9dc0: dc62d460 dcdf8000 dcdf9df4 c0380ba0 c04ef418 dcdf9e30
 00000000 dcdf9e3c
 [  730.578233] 9de0: dcdf9e30 dcdf8000 00376030 00000000 00000002 c006e0c4
 c04ef418 dcdf9e30
 [  730.586358] 9e00: dcdf8000 00000000 00000000 00000000 dcdf8000 c006e298
 dcdf9ea4 00000000
 [  730.594482] 9e20: 00000000 dcdf9e4c 42f1313c 00000010 00000000 c0445611
 00000000 00000044
 [  730.602606] 9e40: 00000000 dcdf9e68 00000000 00000000 443899f8 c02460d4
 00000003 00000000
 [  730.618854] 9e60: dd14c360 c024627c 00000000 00000001 00000000 00000000
 00000000 00000000
 [  730.618854] 9e80: 00000000 00000000 00000000 00000000 00000000 00000000
 00000001 00000000
 [  730.626978] 9ea0: 00000000 00000000 00000000 00376000 dc670c60 00000030
 00000001 00000002
 [  730.635102] 9ec0: 00376030 00376030 00000000 c007014c ffffffff 25950580
 00000003 c006cc00
 [  730.651352] 9ee0: 00000000 00000000 00000000 dc464498 c0445611 443899f8
 dd14c360 443899f8
 [  730.651352] 9f00: dcdf8000 00020000 000000b8 c0245250 dd14c360 443899f8
 443899f8 dcdd5b68
 [  730.659477] 9f20: c0030228 c00c7d50 dc670c60 0000000a dc62d61c dcdf9f78
 00000000 00000001
 [  730.675724] 9f40: 0000000a 44d00d28 00000000 00000000 00000150 00000001
 00000000 00000000
 [  730.675724] 9f60: 00000150 c00c9a58 dc62d460 dd14c360 443899f8 c0445611
 00000017 c0030228
 [  730.683850] 9f80: dcdf8000 c00c7df8 00000017 00000001 443899f8 0000ffc7
 0000ffc8 0000ffc9
 [  730.691973] 9fa0: 00000036 c0030080 0000ffc7 0000ffc8 00000017 c0445611
 443899f8 0000ffc6
 [  730.700098] 9fc0: 0000ffc7 0000ffc8 0000ffc9 00000036 443899f8 00000000
 42eaf288 000000b8
 [  730.708222] 9fe0: 44389770 44389760 42ea2d54 40408a30 60000010 00000017
 00000000 00000000
 [  730.716347] [<c0039650>] (v7_dma_inv_range+0x20/0x48) from [<c00365ac>]
 (dma_cache_maint_page+0x2c/0x34)
 [  730.733899] [<c00365ac>] (dma_cache_maint_page+0x2c/0x34) from
 [<c0036684>] (___dma_page_dev_to_cpu+0x68/0xb0)
 [  730.733899] [<c0036684>] (___dma_page_dev_to_cpu+0x68/0xb0) from
 [<c003675c>] (dma_unmap_sg+0x44/0x60)
 [  730.753093] [<c003675c>] (dma_unmap_sg+0x44/0x60) from [<bf010ffc>]
 (mcam_vb_sg_buf_finish+0x2c/0x34 [mmp_camera])
 [  730.753093] [<bf010ffc>] (mcam_vb_sg_buf_finish+0x2c/0x34 [mmp_camera])
 from [<bf009d64>] (vb2_dqbuf+0x224/0x3e0 [videobuf2_core])
 [  730.763390] [<bf009d64>] (vb2_dqbuf+0x224/0x3e0 [videobuf2_core]) from
 [<bf010e9c>] (mcam_vidioc_dqbuf+0x30/0x44 [mmp_camera])
 [  730.775064] [<bf010e9c>] (mcam_vidioc_dqbuf+0x30/0x44 [mmp_camera])
 from [<c02487f4>] (__video_do_ioctl+0x2578/0x5164)
 [  730.797025] [<c02487f4>] (__video_do_ioctl+0x2578/0x5164) from
 [<c02460d4>] (video_usercopy+0x358/0x498)
 [  730.797025] [<c02460d4>] (video_usercopy+0x358/0x498) from [<c0245250>]
 (v4l2_ioctl+0x68/0x114)
 [  730.806440] [<c0245250>] (v4l2_ioctl+0x68/0x114) from [<c00c7d50>]
 (do_vfs_ioctl+0x544/0x5b8)
 [  730.815084] [<c00c7d50>] (do_vfs_ioctl+0x544/0x5b8) from [<c00c7df8>]
 (sys_ioctl+0x34/0x54)
 [  730.823549] [<c00c7df8>] (sys_ioctl+0x34/0x54) from [<c0030080>]
 (ret_fast_syscall+0x0/0x30)
 [  730.831849] Code: e1a02312 e2423001 e1100003 e1c00003 (1e070f3e)
 [  730.855110] ---[ end trace 076062dcf312f2ff ]---
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/11128#comment:2>
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