* bug? oops with mem2mem_testdev module
@ 2010-12-29 21:27 Roland Kletzing
2010-12-29 21:34 ` Randy Dunlap
2010-12-29 22:36 ` Sylwester Nawrocki
0 siblings, 2 replies; 6+ messages in thread
From: Roland Kletzing @ 2010-12-29 21:27 UTC (permalink / raw)
To: linux-media; +Cc: p.osciak
Hello,
i assume this is not expected behaviour.
see below
kernel is 2.6.37-rc7
regards
roland
[root@ubuntu]:~# modprobe mem2mem_testdev;modprobe -r mem2mem_testdev;modprobe mem2mem_testdevKilled
[ 80.266552] m2m-testdev m2m-testdev.0: mem2mem-testdevDevice registered as /dev/video0[ 80.292786] m2m-testdev m2m-testdev.0: Removing mem2mem-testdev[ 80.323013] BUG: unable to handle kernel paging request at 7562696c[ 80.323685] IP: [ ] __kmalloc_track_caller+0x95/0x1c0[ 80.324094] *pde = 00000000[ 80.324094] Oops: 0000 [#1] SMP[ 80.324094] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.324094] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.324094][ 80.324094] Pid: 731, comm: modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.324094] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.324094] EIP is at __kmalloc_track_caller+0x95/0x1c0[ 80.324094] EAX: df406ff8 EBX: 0000013c ECX: 7562696c EDX: 00000000[ 80.324094] ESI: df002500 EDI: 000000d0 EBP: de771e70 ESP: de771e44[ 80.324094] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.324094] Process modprobe (pid: 731, ti=de770000 task=de4d5860 task.ti=de770000)[ 80.324094] Stack:[ 80.324094] ffffffff 00000757 00000000 c04f5d4e de4220c4 c035ef4b 00000246 7562696c[ 80.324094] de50a9c0 000000d0 000000ab de771e90 c04f5d78 df002180 00000000 00000080[ 80.324094] 00000020 df0007b0 de422000 de771ee0 c035ef4b ffffffff c0755692 00000757[ 80.324094] Call Trace:[ 80.324094] [ ] ? __alloc_skb+0x2e/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? __alloc_skb+0x58/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? kobject_uevent+0xa/0x10[ 80.324094] [ ] ? kobject_release+0x74/0x80[ 80.324094] [ ] ? kobject_release+0x0/0x80[ 80.324094] [ ] ? kref_put+0x2d/0x60[ 80.324094] [ ] ? kobject_put+0x1d/0x50[ 80.324094] [ ] ? free_sect_attrs+0x32/0x40[ 80.324094] [ ] ? free_module+0x143/0x1c0[ 80.324094] [ ] ? sys_delete_module+0x16e/0x200[ 80.324094] [ ] ? sysenter_do_call+0x12/0x28[ 80.324094] Code: 9c 58 8d 44 20 00 89 45 ec fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 10 85 d2 89 55 f0 0f 84 0b 01 00 00 8b 56 10 8b 4d f0 14 11 89 10 8b 45 ec 50 9d 8d 44 20 00 8b 55 f0 85 d2 75 46[ 80.324094] EIP: [ ] __kmalloc_track_caller+0x95/0x1c0 SS:ESP 0068:de771e44[ 80.324094] CR2: 000000007562696c[ 80.324094] ---[ end trace 1c390fe96c782b4a ]---[ 80.336810] BUG: unable to handle kernel paging request at 7562696c[ 80.337045] IP: [ ] kmem_cache_alloc_notrace+0x52/0xa0[ 80.337207] *pde = 00000000[ 80.337323] Oops: 0000 [#2] SMP[ 80.337454] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.337596] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.338648][ 80.338812] Pid: 706, comm: bash Tainted: G D 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.339076] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.339208] EIP is at kmem_cache_alloc_notrace+0x52/0xa0[ 80.339336] EAX: df406ff8 EBX: 7562696c ECX: c02258bc EDX: 00000000[ 80.339473] ESI: df002500 EDI: 000080d0 EBP: de51ff18 ESP: de51ff00[ 80.339611] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.339739] Process bash (pid: 706, ti=de51e000 task=de4d25e0 task.ti=de51e000)[ 80.339957] Stack:[ 80.340056] 0871c3c8 c02258bc 00000246 cbe22c40 df002500 de106bd0 de51ff38 c02258bc[ 80.340072] 00000040 000080d0 de51ff38 de106bd0 00000000 0871c3c8 de51ff60 c0225990[ 80.340072] 00000000 00000000 c072e378 cbf5f8f4 de51ffb4 ffffffea 00000000 0871c3c8[ 80.340072] Call Trace:[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? create_write_pipe+0x50/0x190[ 80.340072] [ ] ? do_pipe_flags+0x3f/0x110[ 80.340072] [ ] ? sys_pipe2+0x1e/0x60[ 80.340072] [ ] ? sys_rt_sigprocmask+0x99/0xf0[ 80.340072] [ ] ? sys_pipe+0x1e/0x20[ 80.340072] [ ] ? sysenter_do_call+0x12/0x28[ 80.340072] Code: 4d ec e8 12 43 3c 00 8b 4d ec 9c 58 8d 44 20 00 89 45 f0 fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 18 85 db 74 3c 8b 56 10 14 13 89 10 8b 45 f0 50 9d 8d 44 20 00 85 db 75 14 89 d8 8b[ 80.340072] EIP: [ ] kmem_cache_alloc_notrace+0x52/0xa0 SS:ESP 0068:de51ff00[ 80.340072] CR2: 000000007562696c[ 80.340072] ---[ end trace 1c390fe96c782b4b ]---
___________________________________________________________
NEU: FreePhone - kostenlos mobil telefonieren und surfen!
Jetzt informieren: http://produkte.web.de/go/webdefreephone
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bug? oops with mem2mem_testdev module
2010-12-29 21:27 bug? oops with mem2mem_testdev module Roland Kletzing
@ 2010-12-29 21:34 ` Randy Dunlap
2010-12-29 22:16 ` devzero
[not found] ` <511456980.3809534.1293660988971.JavaMail.fmail@mwmweb063>
2010-12-29 22:36 ` Sylwester Nawrocki
1 sibling, 2 replies; 6+ messages in thread
From: Randy Dunlap @ 2010-12-29 21:34 UTC (permalink / raw)
To: Roland Kletzing; +Cc: linux-media, p.osciak
On Wed, 29 Dec 2010 22:27:50 +0100 (CET) Roland Kletzing wrote:
> Hello,
>
> i assume this is not expected behaviour.
> see below
> kernel is 2.6.37-rc7
>
> regards
> roland
>
>
> [root@ubuntu]:~# modprobe mem2mem_testdev;modprobe -r mem2mem_testdev;modprobe mem2mem_testdevKilled
>
> [ 80.266552] m2m-testdev m2m-testdev.0: mem2mem-testdevDevice registered as /dev/video0[ 80.292786] m2m-testdev m2m-testdev.0: Removing mem2mem-testdev[ 80.323013] BUG: unable to handle kernel paging request at 7562696c[ 80.323685] IP: [ ] __kmalloc_track_caller+0x95/0x1c0[ 80.324094] *pde = 00000000[ 80.324094] Oops: 0000 [#1] SMP[ 80.324094] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.324094] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.324094][ 80.324094] Pid: 731, comm: modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.324094] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.324094] EIP is at __kmalloc_track_caller+0x95/0x1c0[ 80.324094] EAX: df406ff8 EBX: 0000013c ECX: 7562696c EDX: 00000000[ 80.324094] ESI: df002500 EDI: 000000d0 EBP: de771e70 ESP: de771e44[ 80.324094] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.324094] Process modprobe (pid: 731, ti=de770000 task=de4d5860 task.ti=de770000)[ 80.324094] Stack:[ 80.324094] ffffffff 00000757 00000000 c04f5d4e de4220c4 c035ef4b 00000246 7562696c[ 80.324094] de50a9c0 000000d0 000000ab de771e90 c04f5d78 df002180 00000000 00000080[ 80.324094] 00000020 df0007b0 de422000 de771ee0 c035ef4b ffffffff c0755692 00000757[ 80.324094] Call Trace:[ 80.324094] [ ] ? __alloc_skb+0x2e/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? __alloc_skb+0x58/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? kobject_uevent+0xa/0x10[ 80.324094] [ ] ? kobject_release+0x74/0x80[ 80.324094] [ ] ? kobject_release+0x0/0x80[ 80.324094] [ ] ? kref_put+0x2d/0x60[ 80.324094] [ ] ? kobject_put+0x1d/0x50[ 80.324094] [ ] ? free_sect_attrs+0x32/0x40[ 80.324094] [ ] ? free_module+0x143/0x1c0[ 80.324094] [ ] ? sys_delete_module+0x16e/0x200[ 80.324094] [ ] ? sysenter_do_call+0x12/0x28[ 80.324094] Code: 9c 58 8d 44 20 00 89 45 ec fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 10 85 d2 89 55 f0 0f 84 0b 01 00 00 8b 56 10 8b 4d f0 14 11 89 10 8b 45 ec 50 9d 8d 44 20 00 8b 55 f0 85 d2 75 46[ 80.324094] EIP: [ ] __kmalloc_track_caller+0x95/0x1c0 SS:ESP 0068:de771e44[ 80.324094] CR2: 000000007562696c[ 80.324094] ---[ end trace 1c390fe96c782b4a ]---[ 80.336810] BUG: unable to handle kernel paging request at 7562696c[ 80.337045] IP: [ ] kmem_cache_alloc_notrace+0x52/0xa0[ 80.337207] *pde = 00000000[ 80.337323] Oops: 0000 [#2] SMP[ 80.337454] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.337596] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.338648][ 80.338812] Pid: 706, comm: bash Tainted: G D 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.339076] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.339208] EIP is at kmem_cache_alloc_notrace+0x52/0xa0[ 80.339336] EAX: df406ff8 EBX: 7562696c ECX: c02258bc EDX: 00000000[ 80.339473] ESI: df002500 EDI: 000080d0 EBP: de51ff18 ESP: de51ff00[ 80.339611] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.339739] Process bash (pid: 706, ti=de51e000 task=de4d25e0 task.ti=de51e000)[ 80.339957] Stack:[ 80.340056] 0871c3c8 c02258bc 00000246 cbe22c40 df002500 de106bd0 de51ff38 c02258bc[ 80.340072] 00000040 000080d0 de51ff38 de106bd0 00000000 0871c3c8 de51ff60 c0225990[ 80.340072] 00000000 00000000 c072e378 cbf5f8f4 de51ffb4 ffffffea 00000000 0871c3c8[ 80.340072] Call Trace:[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? create_write_pipe+0x50/0x190[ 80.340072] [ ] ? do_pipe_flags+0x3f/0x110[ 80.340072] [ ] ? sys_pipe2+0x1e/0x60[ 80.340072] [ ] ? sys_rt_sigprocmask+0x99/0xf0[ 80.340072] [ ] ? sys_pipe+0x1e/0x20[ 80.340072] [ ] ? sysenter_do_call+0x12/0x28[ 80.340072] Code: 4d ec e8 12 43 3c 00 8b 4d ec 9c 58 8d 44 20 00 89 45 f0 fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 18 85 db 74 3c 8b 56 10 14 13 89 10 8b 45 f0 50 9d 8d 44 20 00 85 db 75 14 89 d8 8b[ 80.340072] EIP: [ ] kmem_cache_alloc_notrace+0x52/0xa0 SS:ESP 0068:de51ff00[ 80.340072] CR2: 000000007562696c[ 80.340072] ---[ end trace 1c390fe96c782b4b ]---
Ugh, what happened to all of the CRs and/or LFs?
This (and the others that you have posted today) is very unreadable/unusable.
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
desserts: http://www.xenotime.net/linux/recipes/
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bug? oops with mem2mem_testdev module
2010-12-29 21:34 ` Randy Dunlap
@ 2010-12-29 22:16 ` devzero
[not found] ` <511456980.3809534.1293660988971.JavaMail.fmail@mwmweb063>
1 sibling, 0 replies; 6+ messages in thread
From: devzero @ 2010-12-29 22:16 UTC (permalink / raw)
To: Randy Dunlap; +Cc: linux-media, p.osciak
sorry, that must be the f....n webmailer.
i chose "text mail" and did nothing but copy/paste from putty....
rather curious.....will repost
p.osciak@samsung.com (from modinfo) is bouncing, btw.
-----Ursprüngliche Nachricht-----
Von: "Randy Dunlap"
Gesendet: 29.12.2010 22:34:42
An: "Roland Kletzing"
Betreff: Re: bug? oops with mem2mem_testdev module
>On Wed, 29 Dec 2010 22:27:50 +0100 (CET) Roland Kletzing wrote:
>
>> Hello,
>>
>> i assume this is not expected behaviour.
>> see below
>> kernel is 2.6.37-rc7
>>
>> regards
>> roland
>>
>>
>> [root@ubuntu]:~# modprobe mem2mem_testdev;modprobe -r mem2mem_testdev;modprobe mem2mem_testdevKilled
>>
>> [ 80.266552] m2m-testdev m2m-testdev.0: mem2mem-testdevDevice registered as /dev/video0[ 80.292786] m2m-testdev m2m-testdev.0: Removing mem2mem-testdev[ 80.323013] BUG: unable to handle kernel paging request at 7562696c[ 80.323685] IP: [ ] __kmalloc_track_caller+0x95/0x1c0[ 80.324094] *pde = 00000000[ 80.324094] Oops: 0000 [#1] SMP[ 80.324094] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.324094] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.324094][ 80.324094] Pid: 731, comm: modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.324094] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.324094] EIP is at __kmalloc_track_caller+0x95/0x1c0[ 80.324094] EAX: df406ff8 EBX: 0000013c ECX: 7562696c EDX: 00000000[ 80.324094] ESI: df002500 EDI: 000000d0 EBP: de771e70 ESP: de771e44[ 80.324094] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.324094] Process modprobe (pid: 731, ti=de770000 task=de4d5860 task.ti=de770000)[ 80.324094] Stack:[ 80.324094] ffffffff 00000757 00000000 c04f5d4e de4220c4 c035ef4b 00000246 7562696c[ 80.324094] de50a9c0 000000d0 000000ab de771e90 c04f5d78 df002180 00000000 00000080[ 80.324094] 00000020 df0007b0 de422000 de771ee0 c035ef4b ffffffff c0755692 00000757[ 80.324094] Call Trace:[ 80.324094] [ ] ? __alloc_skb+0x2e/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? __alloc_skb+0x58/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? kobject_uevent+0xa/0x10[ 80.324094] [ ] ? kobject_release+0x74/0x80[ 80.324094] [ ] ? kobject_release+0x0/0x80[ 80.324094] [ ] ? kref_put+0x2d/0x60[ 80.324094] [ ] ? kobject_put+0x1d/0x50[ 80.324094] [ ] ? free_sect_attrs+0x32/0x40[ 80.324094] [ ] ? free_module+0x143/0x1c0[ 80.324094] [ ] ? sys_delete_module+0x16e/0x200[ 80.324094] [ ] ? sysenter_do_call+0x12/0x28[ 80.324094] Code: 9c 58 8d 44 20 00 89 45 ec fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 10 85 d2 89 55 f0 0f 84 0b 01 00 00 8b 56 10 8b 4d f0 14 11 89 10 8b 45 ec 50 9d 8d 44 20 00 8b 55 f0 85 d2 75 46[ 80.324094] EIP: [ ] __kmalloc_track_caller+0x95/0x1c0 SS:ESP 0068:de771e44[ 80.324094] CR2: 000000007562696c[ 80.324094] ---[ end trace 1c390fe96c782b4a ]---[ 80.336810] BUG: unable to handle kernel paging request at 7562696c[ 80.337045] IP: [ ] kmem_cache_alloc_notrace+0x52/0xa0[ 80.337207] *pde = 00000000[ 80.337323] Oops: 0000 [#2] SMP[ 80.337454] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.337596] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.338648][ 80.338812] Pid: 706, comm: bash Tainted: G D 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.339076] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.339208] EIP is at kmem_cache_alloc_notrace+0x52/0xa0[ 80.339336] EAX: df406ff8 EBX: 7562696c ECX: c02258bc EDX: 00000000[ 80.339473] ESI: df002500 EDI: 000080d0 EBP: de51ff18 ESP: de51ff00[ 80.339611] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.339739] Process bash (pid: 706, ti=de51e000 task=de4d25e0 task.ti=de51e000)[ 80.339957] Stack:[ 80.340056] 0871c3c8 c02258bc 00000246 cbe22c40 df002500 de106bd0 de51ff38 c02258bc[ 80.340072] 00000040 000080d0 de51ff38 de106bd0 00000000 0871c3c8 de51ff60 c0225990[ 80.340072] 00000000 00000000 c072e378 cbf5f8f4 de51ffb4 ffffffea 00000000 0871c3c8[ 80.340072] Call Trace:[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? create_write_pipe+0x50/0x190[ 80.340072] [ ] ? do_pipe_flags+0x3f/0x110[ 80.340072] [ ] ? sys_pipe2+0x1e/0x60[ 80.340072] [ ] ? sys_rt_sigprocmask+0x99/0xf0[ 80.340072] [ ] ? sys_pipe+0x1e/0x20[ 80.340072] [ ] ? sysenter_do_call+0x12/0x28[ 80.340072] Code: 4d ec e8 12 43 3c 00 8b 4d ec 9c 58 8d 44 20 00 89 45 f0 fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 18 85 db 74 3c 8b 56 10 14 13 89 10 8b 45 f0 50 9d 8d 44 20 00 85 db 75 14 89 d8 8b[ 80.340072] EIP: [ ] kmem_cache_alloc_notrace+0x52/0xa0 SS:ESP 0068:de51ff00[ 80.340072] CR2: 000000007562696c[ 80.340072] ---[ end trace 1c390fe96c782b4b ]---
>
>
>Ugh, what happened to all of the CRs and/or LFs?
>
>This (and the others that you have posted today) is very unreadable/unusable.
>
>---
>~Randy
>*** Remember to use Documentation/SubmitChecklist when testing your code ***
>desserts: http://www.xenotime.net/linux/recipes/
___________________________________________________________
WEB.DE DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt auch mit
gratis Notebook-Flat! http://produkte.web.de/go/DSL_Doppel_Flatrate/2
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bug? oops with mem2mem_testdev module
2010-12-29 21:27 bug? oops with mem2mem_testdev module Roland Kletzing
2010-12-29 21:34 ` Randy Dunlap
@ 2010-12-29 22:36 ` Sylwester Nawrocki
1 sibling, 0 replies; 6+ messages in thread
From: Sylwester Nawrocki @ 2010-12-29 22:36 UTC (permalink / raw)
To: Roland Kletzing; +Cc: linux-media, pawel
Hi Roland,
On 12/29/2010 10:27 PM, Roland Kletzing wrote:
> Hello,
>
> i assume this is not expected behaviour.
> see below
> kernel is 2.6.37-rc7
>
> regards
> roland
>
>
> [root@ubuntu]:~# modprobe mem2mem_testdev;modprobe -r mem2mem_testdev;modprobe mem2mem_testdevKilled
>
> [ 80.266552] m2m-testdev m2m-testdev.0: mem2mem-testdevDevice registered as /dev/video0
[ 80.292786] m2m-testdev m2m-testdev.0: Removing mem2mem-testdev
[ 80.323013] BUG: unable to handle kernel paging request at 7562696c
This is caused by a second attempt to free an instance of struct
video_device in function m2mtest_remove.
The regression is caused by commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=71088bad7426650e4ea5fb4182580ea8458442e7
Reverting it should fix the problem.
There is no need to call video_device_release when unloading the module
because video_device_release is already assigned to
m2mtest_videodev.release and v4l core uses this callback to free memory
at the right time.
The issue had been noticed before but somehow the fix didn't make it to
mainline kernel until now.
Adding Pawel's new email address at CC.
Regards,
Sylwester
[ 80.323685] IP: [ ] __kmalloc_track_caller+0x95/0x1c0[ 80.324094] *pde
= 00000000
[ 80.324094] Oops: 0000 [#1] SMP
[ 80.324094] last sysfs file: /sys/module/videobuf_vmalloc/refcnt
[ 80.324094] Modules linked in: videobuf_core snd_ens1371 gameport
snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd
psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc
intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi
mptscsih floppy mii mptbase scsi_transport_spi [last unloaded:
videobuf_vmalloc][ 80.324094][ 80.324094] Pid: 731, comm
> : modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.324094] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.324094] EIP is at __kmalloc_track_caller+0x95/0x1c0[ 80.324094] EAX: df406ff8 EBX: 0000013c ECX: 7562696c EDX: 00000000[ 80.324094] ESI: df002500 EDI: 000000d0 EBP: de771e70 ESP: de771e44[ 80.324094] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.324094] Process modprobe (pid: 731, ti=de770000 task=de4d5860 task.ti=de770000)[ 80.324094] Stack:[ 80.324094] ffffffff 00000757 00000000 c04f5d4e de4220c4 c035ef4b 00000246 7562696c[ 80.324094] de50a9c0 000000d0 000000ab de771e90 c04f5d78 df002180 00000000 00000080[ 80.324094] 00000020 df0007b0 de422000 de771ee0 c035ef4b ffffffff c0755692 00000757[ 80.324094] Call Trace:[ 80.324094] [ ] ? __alloc_
> skb+0x2e/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? __alloc_skb+0x58/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? kobject_uevent+0xa/0x10[ 80.324094] [ ] ? kobject_release+0x74/0x80[ 80.324094] [ ] ? kobject_release+0x0/0x80[ 80.324094] [ ] ? kref_put+0x2d/0x60[ 80.324094] [ ] ? kobject_put+0x1d/0x50[ 80.324094] [ ] ? free_sect_attrs+0x32/0x40[ 80.324094] [ ] ? free_module+0x143/0x1c0[ 80.324094] [ ] ? sys_delete_module+0x16e/0x200[ 80.324094] [ ] ? sysenter_do_call+0x12/0x28[ 80.324094] Code: 9c 58 8d 44 20 00 89 45 ec fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 10 85 d2 89 55 f0 0f 84 0b 01 00 00 8b 56 10 8b 4d f0 14 11 89 10 8b 45 ec 50 9d 8d 44 20 00 8b 55 f0 85 d2 75 46[ 80.324094] EIP: [ ] __kmalloc_track_caller+0x95/0
> x1c0 SS:ESP 0068:de771e44[ 80.324094] CR2: 000000007562696c[ 80.324094] ---[ end trace 1c390fe96c782b4a ]---[ 80.336810] BUG: unable to handle kernel paging request at 7562696c[ 80.337045] IP: [ ] kmem_cache_alloc_notrace+0x52/0xa0[ 80.337207] *pde = 00000000[ 80.337323] Oops: 0000 [#2] SMP[ 80.337454] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.337596] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.338648][ 80.338812] Pid: 706, comm: bash Tainted: G D 2.6.37-rc7 #3 440BX
> Desktop Reference Platform/VMware Virtual Platform[ 80.339076] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.339208] EIP is at kmem_cache_alloc_notrace+0x52/0xa0[ 80.339336] EAX: df406ff8 EBX: 7562696c ECX: c02258bc EDX: 00000000[ 80.339473] ESI: df002500 EDI: 000080d0 EBP: de51ff18 ESP: de51ff00[ 80.339611] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.339739] Process bash (pid: 706, ti=de51e000 task=de4d25e0 task.ti=de51e000)[ 80.339957] Stack:[ 80.340056] 0871c3c8 c02258bc 00000246 cbe22c40 df002500 de106bd0 de51ff38 c02258bc[ 80.340072] 00000040 000080d0 de51ff38 de106bd0 00000000 0871c3c8 de51ff60 c0225990[ 80.340072] 00000000 00000000 c072e378 cbf5f8f4 de51ffb4 ffffffea 00000000 0871c3c8[ 80.340072] Call Trace:[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? alloc_pipe
> _info+0x6c/0xf0[ 80.340072] [ ] ? create_write_pipe+0x50/0x190[ 80.340072] [ ] ? do_pipe_flags+0x3f/0x110[ 80.340072] [ ] ? sys_pipe2+0x1e/0x60[ 80.340072] [ ] ? sys_rt_sigprocmask+0x99/0xf0[ 80.340072] [ ] ? sys_pipe+0x1e/0x20[ 80.340072] [ ] ? sysenter_do_call+0x12/0x28[ 80.340072] Code: 4d ec e8 12 43 3c 00 8b 4d ec 9c 58 8d 44 20 00 89 45 f0 fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 18 85 db 74 3c 8b 56 10 14 13 89 10 8b 45 f0 50 9d 8d 44 20 00 85 db 75 14 89 d8 8b[ 80.340072] EIP: [ ] kmem_cache_alloc_notrace+0x52/0xa0 SS:ESP 0068:de51ff00[ 80.340072] CR2: 000000007562696c[ 80.340072] ---[ end trace 1c390fe96c782b4b ]---
> ___________________________________________________________
> NEU: FreePhone - kostenlos mobil telefonieren und surfen!
> Jetzt informieren: http://produkte.web.de/go/webdefreephone
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bug? oops with mem2mem_testdev module
[not found] ` <511456980.3809534.1293660988971.JavaMail.fmail@mwmweb063>
@ 2010-12-30 0:43 ` devzero
2010-12-30 15:52 ` Pawel Osciak
0 siblings, 1 reply; 6+ messages in thread
From: devzero @ 2010-12-30 0:43 UTC (permalink / raw)
To: Randy Dunlap; +Cc: linux-media
>sorry, that must be the f....n webmailer.
apparently, it seems related to IE8.... sadly, i have no linux desktop where i`m at for the moment ....
so, i added my findings to bugzilla - except the mem2mem one, as this got a response and the cause seems to be already known.....
here they are for reference:
system freeze when loading g_webcam gadget driver -> https://bugzilla.kernel.org/show_bug.cgi?id=25892
g_printer oops on module unload -> https://bugzilla.kernel.org/show_bug.cgi?id=25882
spi_butterfly oops -> https://bugzilla.kernel.org/show_bug.cgi?id=25872
regards
roland
>i chose "text mail" and did nothing but copy/paste from putty....
>rather curious.....will repost
>
>p.osciak@samsung.com (from modinfo) is bouncing, btw.
>
>-----Ursprüngliche Nachricht-----
>Von: "Randy Dunlap"
>Gesendet: 29.12.2010 22:34:42
>An: "Roland Kletzing"
>Betreff: Re: bug? oops with mem2mem_testdev module
>
>>On Wed, 29 Dec 2010 22:27:50 +0100 (CET) Roland Kletzing wrote:
>>
>>> Hello,
>>>
>>> i assume this is not expected behaviour.
>>> see below
>>> kernel is 2.6.37-rc7
>>>
>>> regards
>>> roland
>>>
>>>
>>> [root@ubuntu]:~# modprobe mem2mem_testdev;modprobe -r mem2mem_testdev;modprobe mem2mem_testdevKilled
>>>
>>> [ 80.266552] m2m-testdev m2m-testdev.0: mem2mem-testdevDevice registered as /dev/video0[ 80.292786] m2m-testdev m2m-testdev.0: Removing mem2mem-testdev[ 80.323013] BUG: unable to handle kernel paging request at 7562696c[ 80.323685] IP: [ ] __kmalloc_track_caller+0x95/0x1c0[ 80.324094] *pde = 00000000[ 80.324094] Oops: 0000 [#1] SMP[ 80.324094] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.324094] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.324094][ 80.324094] Pid: 731, comm: modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.324094] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.324094] EIP is at __kmalloc_track_caller+0x95/0x1c0[ 80.324094] EAX: df406ff8 EBX: 0000013c ECX: 7562696c EDX: 00000000[ 80.324094] ESI: df002500 EDI: 000000d0 EBP: de771e70 ESP: de771e44[ 80.324094] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.324094] Process modprobe (pid: 731, ti=de770000 task=de4d5860 task.ti=de770000)[ 80.324094] Stack:[ 80.324094] ffffffff 00000757 00000000 c04f5d4e de4220c4 c035ef4b 00000246 7562696c[ 80.324094] de50a9c0 000000d0 000000ab de771e90 c04f5d78 df002180 00000000 00000080[ 80.324094] 00000020 df0007b0 de422000 de771ee0 c035ef4b ffffffff c0755692 00000757[ 80.324094] Call Trace:[ 80.324094] [ ] ? __alloc_skb+0x2e/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? __alloc_skb+0x58/0x100[ 80.324094] [ ] ? kobject_uevent_env+0x29b/0x430[ 80.324094] [ ] ? kobject_uevent+0xa/0x10[ 80.324094] [ ] ? kobject_release+0x74/0x80[ 80.324094] [ ] ? kobject_release+0x0/0x80[ 80.324094] [ ] ? kref_put+0x2d/0x60[ 80.324094] [ ] ? kobject_put+0x1d/0x50[ 80.324094] [ ] ? free_sect_attrs+0x32/0x40[ 80.324094] [ ] ? free_module+0x143/0x1c0[ 80.324094] [ ] ? sys_delete_module+0x16e/0x200[ 80.324094] [ ] ? sysenter_do_call+0x12/0x28[ 80.324094] Code: 9c 58 8d 44 20 00 89 45 ec fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 10 85 d2 89 55 f0 0f 84 0b 01 00 00 8b 56 10 8b 4d f0 14 11 89 10 8b 45 ec 50 9d 8d 44 20 00 8b 55 f0 85 d2 75 46[ 80.324094] EIP: [ ] __kmalloc_track_caller+0x95/0x1c0 SS:ESP 0068:de771e44[ 80.324094] CR2: 000000007562696c[ 80.324094] ---[ end trace 1c390fe96c782b4a ]---[ 80.336810] BUG: unable to handle kernel paging request at 7562696c[ 80.337045] IP: [ ] kmem_cache_alloc_notrace+0x52/0xa0[ 80.337207] *pde = 00000000[ 80.337323] Oops: 0000 [#2] SMP[ 80.337454] last sysfs file: /sys/module/videobuf_vmalloc/refcnt[ 80.337596] Modules linked in: videobuf_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer snd psmouse soundcore snd_page_alloc intel_agp lp ppdev serio_raw parport_pc intel_gtt shpchp vmw_balloon agpgart i2c_piix4 parport pcnet32 mptspi mptscsih floppy mii mptbase scsi_transport_spi [last unloaded: videobuf_vmalloc][ 80.338648][ 80.338812] Pid: 706, comm: bash Tainted: G D 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual Platform[ 80.339076] EIP: 0060:[ ] EFLAGS: 00010006 CPU: 0[ 80.339208] EIP is at kmem_cache_alloc_notrace+0x52/0xa0[ 80.339336] EAX: df406ff8 EBX: 7562696c ECX: c02258bc EDX: 00000000[ 80.339473] ESI: df002500 EDI: 000080d0 EBP: de51ff18 ESP: de51ff00[ 80.339611] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068[ 80.339739] Process bash (pid: 706, ti=de51e000 task=de4d25e0 task.ti=de51e000)[ 80.339957] Stack:[ 80.340056] 0871c3c8 c02258bc 00000246 cbe22c40 df002500 de106bd0 de51ff38 c02258bc[ 80.340072] 00000040 000080d0 de51ff38 de106bd0 00000000 0871c3c8 de51ff60 c0225990[ 80.340072] 00000000 00000000 c072e378 cbf5f8f4 de51ffb4 ffffffea 00000000 0871c3c8[ 80.340072] Call Trace:[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? alloc_pipe_info+0x6c/0xf0[ 80.340072] [ ] ? create_write_pipe+0x50/0x190[ 80.340072] [ ] ? do_pipe_flags+0x3f/0x110[ 80.340072] [ ] ? sys_pipe2+0x1e/0x60[ 80.340072] [ ] ? sys_rt_sigprocmask+0x99/0xf0[ 80.340072] [ ] ? sys_pipe+0x1e/0x20[ 80.340072] [ ] ? sysenter_do_call+0x12/0x28[ 80.340072] Code: 4d ec e8 12 43 3c 00 8b 4d ec 9c 58 8d 44 20 00 89 45 f0 fa 8d 44 20 00 90 8b 06 64 03 05 94 80 8c c0 8b 18 85 db 74 3c 8b 56 10 14 13 89 10 8b 45 f0 50 9d 8d 44 20 00 85 db 75 14 89 d8 8b[ 80.340072] EIP: [ ] kmem_cache_alloc_notrace+0x52/0xa0 SS:ESP 0068:de51ff00[ 80.340072] CR2: 000000007562696c[ 80.340072] ---[ end trace 1c390fe96c782b4b ]---
>>
>>
>>Ugh, what happened to all of the CRs and/or LFs?
>>
>>This (and the others that you have posted today) is very unreadable/unusable.
>>
>>---
>>~Randy
>>*** Remember to use Documentation/SubmitChecklist when testing your code ***
>>desserts: http://www.xenotime.net/linux/recipes/
___________________________________________________________
Empfehlen Sie WEB.DE DSL Ihren Freunden und Bekannten und wir
belohnen Sie mit bis zu 100,- Euro! https://freundschaftswerbung.web.de
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bug? oops with mem2mem_testdev module
2010-12-30 0:43 ` devzero
@ 2010-12-30 15:52 ` Pawel Osciak
0 siblings, 0 replies; 6+ messages in thread
From: Pawel Osciak @ 2010-12-30 15:52 UTC (permalink / raw)
To: devzero, Sylwester Nawrocki; +Cc: Randy Dunlap, linux-media
Hi,
Thanks for reporting the bug, and thanks to Sylwester for a quick
response, that should fix it.
I intend to change my e-mail address in one larger batch during the
merge window, if vb2 patches are taken in.
Best regards,
Pawel Osciak
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-12-30 15:53 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-12-29 21:27 bug? oops with mem2mem_testdev module Roland Kletzing
2010-12-29 21:34 ` Randy Dunlap
2010-12-29 22:16 ` devzero
[not found] ` <511456980.3809534.1293660988971.JavaMail.fmail@mwmweb063>
2010-12-30 0:43 ` devzero
2010-12-30 15:52 ` Pawel Osciak
2010-12-29 22:36 ` Sylwester Nawrocki
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