videobuf2_core oops, recent media_build

videobuf2_core oops, recent media_build

[Jurgen Kramer]

I am seeing kernel oopses using recent media_builds on kernel 3.17:

[  506.969697] BUG: unable to handle kernel NULL pointer dereference at
0000000000000058
[  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
[videobuf2_core]
[  506.969739] PGD 0 
[  506.969746] Oops: 0002 [#1] SMP 
[  506.969754] Modules linked in: nf_conntrack_netbios_ns
nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
ip6table_mangle ip6table_security ip6table_raw ip6table_filter
ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
tveeprom(OE) cx2341x(OE)
[  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
[  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
OE  3.17.4-200.fc20.x86_64 #1
[  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
[  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
ffff88020d36c000
[  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
vb2_thread+0x17a/0x480 [videobuf2_core]
[  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
[  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
000000000000000b
[  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
0000000000000058
[  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
000000000000158f
[  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
0000000000000058
[  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
ffff880225c61028
[  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
knlGS:0000000000000000
[  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
00000000000007f0
[  506.976021] Stack:
[  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
0000000000000000
[  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
ffff880225c61028
[  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
ffff88020d36ff48
[  506.979055] Call Trace:
[  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
[videobuf2_core]
[  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
[  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
+0x190/0x190
[  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
[  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
+0x190/0x190
[  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
[  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
[videobuf2_core]
[  506.985306]  RSP <ffff88020d36fe68>
[  506.986147] CR2: 0000000000000058
[  506.990986] ---[ end trace 1973fbcab83c3353 ]---

First I thought is was related to CAM initialization but after removing
the CAMS and doing a fresh cold start I am still seeing the oopses.
After the oops everything is still functioning. I am using 3x DVBSKY
T980C. How can I debug this further?

Thanks,
Jurgen

Re: videobuf2_core oops, recent media_build. dvbsky t980c's

[Jurgen Kramer]

On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
> I am seeing kernel oopses using recent media_builds on kernel 3.17:
> 
> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
> 0000000000000058
> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  506.969739] PGD 0 
> [  506.969746] Oops: 0002 [#1] SMP 
> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
> tveeprom(OE) cx2341x(OE)
> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
> OE  3.17.4-200.fc20.x86_64 #1
> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
> ffff88020d36c000
> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
> vb2_thread+0x17a/0x480 [videobuf2_core]
> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> 000000000000000b
> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
> 0000000000000058
> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
> 000000000000158f
> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
> 0000000000000058
> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
> ffff880225c61028
> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
> knlGS:0000000000000000
> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
> 00000000000007f0
> [  506.976021] Stack:
> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
> 0000000000000000
> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
> ffff880225c61028
> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
> ffff88020d36ff48
> [  506.979055] Call Trace:
> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
> [videobuf2_core]
> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
> +0x190/0x190
> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
> +0x190/0x190
> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  506.985306]  RSP <ffff88020d36fe68>
> [  506.986147] CR2: 0000000000000058
> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
> 
> First I thought is was related to CAM initialization but after removing
> the CAMS and doing a fresh cold start I am still seeing the oopses.
> After the oops everything is still functioning. I am using 3x DVBSKY
> T980C. How can I debug this further?
> 
The problem persist while my system went through a motherboard/mem/cpu
upgrade. The oops occurs when one of the DVB-C cards get its first use
(in my case mythtv):

[  102.050294] si2157 18-0060: downloading firmware from file
'dvb-tuner-si2158-a20-01.fw'
[  181.460968] BUG: unable to handle kernel NULL pointer dereference at
0000000000000058
[  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
[videobuf2_core]
[  181.461019] PGD 0 
[  181.461024] Oops: 0002 [#1] SMP 
[  181.461032] Modules linked in: nf_conntrack_netbios_ns
nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
ip6table_mangle ip6table_security ip6table_raw ip6table_filter
ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
v4l2_common(OE) videodev(OE)
[  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
async_memcpy crc32c_intel media(OE) async_pq async_xor
ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
[  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
OE  3.17.7-200.fc20.x86_64 #1
[  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
[  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
ffff8800367a4000
[  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
vb2_thread+0x17a/0x480 [videobuf2_core]
[  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
[  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
000000000000000b
[  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
0000000000000058
[  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
0000000000000000
[  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
0000000000000058
[  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
ffff880400999028
[  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
knlGS:0000000000000000
[  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
00000000001407e0
[  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[  181.467541] Stack:
[  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
0000000000000000
[  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
ffff880400999028
[  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
ffff8800367a7f48
[  181.469981] Call Trace:
[  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
[videobuf2_core]
[  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
[  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
+0x190/0x190
[  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
[  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
+0x190/0x190
[  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
[  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
[videobuf2_core]
[  181.476271]  RSP <ffff8800367a7e68>
[  181.476939] CR2: 0000000000000058
[  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
[  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
successfully
[  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
successfully
[  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
successfully

The system works for a while after this oops but eventually gives out.
Any pointers how to debug this would be appreciated.

Jurgen

videobuf2_core oops, recent media_build. dvbsky t980c's

[Chris Lee]

Im seeing the same issue and others using the Prof 7301, different
drivers, same vb2 usage though. Its defn a vb2 issue across multiple
devices :(

Chris Lee

On Mon, Dec 29, 2014 at 7:47 AM, Chris Lee <updatelee@gmail.com> wrote:
> Im seeing the same issue and others using the Prof 7301, different
> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
> devices :(
>
> Chris Lee
>
> On Mon, Dec 29, 2014 at 7:38 AM, Jurgen Kramer <gtmkramer@xs4all.nl> wrote:
>>
>> On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
>>> I am seeing kernel oopses using recent media_builds on kernel 3.17:
>>>
>>> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
>>> 0000000000000058
>>> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>> [videobuf2_core]
>>> [  506.969739] PGD 0
>>> [  506.969746] Oops: 0002 [#1] SMP
>>> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
>>> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
>>> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
>>> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
>>> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
>>> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
>>> tveeprom(OE) cx2341x(OE)
>>> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
>>> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
>>> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
>>> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
>>> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
>>> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
>>> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
>>> OE  3.17.4-200.fc20.x86_64 #1
>>> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
>>> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
>>> ffff88020d36c000
>>> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
>>> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>> 000000000000000b
>>> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
>>> 0000000000000058
>>> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
>>> 000000000000158f
>>> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
>>> 0000000000000058
>>> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
>>> ffff880225c61028
>>> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
>>> knlGS:0000000000000000
>>> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>> 00000000000007f0
>>> [  506.976021] Stack:
>>> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
>>> 0000000000000000
>>> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
>>> ffff880225c61028
>>> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
>>> ffff88020d36ff48
>>> [  506.979055] Call Trace:
>>> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
>>> [videobuf2_core]
>>> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
>>> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>> +0x190/0x190
>>> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
>>> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>> +0x190/0x190
>>> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>> [videobuf2_core]
>>> [  506.985306]  RSP <ffff88020d36fe68>
>>> [  506.986147] CR2: 0000000000000058
>>> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
>>>
>>> First I thought is was related to CAM initialization but after removing
>>> the CAMS and doing a fresh cold start I am still seeing the oopses.
>>> After the oops everything is still functioning. I am using 3x DVBSKY
>>> T980C. How can I debug this further?
>>>
>> The problem persist while my system went through a motherboard/mem/cpu
>> upgrade. The oops occurs when one of the DVB-C cards get its first use
>> (in my case mythtv):
>>
>> [  102.050294] si2157 18-0060: downloading firmware from file
>> 'dvb-tuner-si2158-a20-01.fw'
>> [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
>> 0000000000000058
>> [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>> [videobuf2_core]
>> [  181.461019] PGD 0
>> [  181.461024] Oops: 0002 [#1] SMP
>> [  181.461032] Modules linked in: nf_conntrack_netbios_ns
>> nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>> si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
>> tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
>> videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
>> x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
>> tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
>> v4l2_common(OE) videodev(OE)
>> [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
>> async_memcpy crc32c_intel media(OE) async_pq async_xor
>> ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
>> drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
>> serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
>> i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
>> nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
>> [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
>> OE  3.17.7-200.fc20.x86_64 #1
>> [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
>> O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
>> [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
>> ffff8800367a4000
>> [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
>> vb2_thread+0x17a/0x480 [videobuf2_core]
>> [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
>> [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>> 000000000000000b
>> [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
>> 0000000000000058
>> [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
>> 0000000000000000
>> [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
>> 0000000000000058
>> [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
>> ffff880400999028
>> [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
>> knlGS:0000000000000000
>> [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>> 00000000001407e0
>> [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
>> 0000000000000000
>> [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
>> 0000000000000400
>> [  181.467541] Stack:
>> [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
>> 0000000000000000
>> [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
>> ffff880400999028
>> [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
>> ffff8800367a7f48
>> [  181.469981] Call Trace:
>> [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
>> [videobuf2_core]
>> [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
>> [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
>> +0x190/0x190
>> [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
>> [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
>> +0x190/0x190
>> [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>> [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>> [videobuf2_core]
>> [  181.476271]  RSP <ffff8800367a7e68>
>> [  181.476939] CR2: 0000000000000058
>> [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
>> [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
>> successfully
>> [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
>> successfully
>> [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
>> successfully
>>
>> The system works for a while after this oops but eventually gives out.
>> Any pointers how to debug this would be appreciated.
>>
>> Jurgen
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>> the body of a message to majordomo at vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html

videobuf2_core oops, recent media_build. dvbsky t980c's

[nick]

Chris,
Please try the latest rc kernel to see if the issue is fixed.
Regards Nick

On 2014-12-29 09:47 AM, Chris Lee wrote:
> Im seeing the same issue and others using the Prof 7301, different
> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
> devices :(
> 
> Chris Lee
> 
> On Mon, Dec 29, 2014 at 7:47 AM, Chris Lee <updatelee@gmail.com> wrote:
>> Im seeing the same issue and others using the Prof 7301, different
>> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
>> devices :(
>>
>> Chris Lee
>>
>> On Mon, Dec 29, 2014 at 7:38 AM, Jurgen Kramer <gtmkramer@xs4all.nl> wrote:
>>>
>>> On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
>>>> I am seeing kernel oopses using recent media_builds on kernel 3.17:
>>>>
>>>> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
>>>> 0000000000000058
>>>> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>> [videobuf2_core]
>>>> [  506.969739] PGD 0
>>>> [  506.969746] Oops: 0002 [#1] SMP
>>>> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
>>>> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
>>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>>> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
>>>> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
>>>> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
>>>> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
>>>> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
>>>> tveeprom(OE) cx2341x(OE)
>>>> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
>>>> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
>>>> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
>>>> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
>>>> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
>>>> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
>>>> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
>>>> OE  3.17.4-200.fc20.x86_64 #1
>>>> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>>> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
>>>> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
>>>> ffff88020d36c000
>>>> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
>>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>>> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
>>>> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>>> 000000000000000b
>>>> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
>>>> 0000000000000058
>>>> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
>>>> 000000000000158f
>>>> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
>>>> 0000000000000058
>>>> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
>>>> ffff880225c61028
>>>> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
>>>> knlGS:0000000000000000
>>>> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>>> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>>> 00000000000007f0
>>>> [  506.976021] Stack:
>>>> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
>>>> 0000000000000000
>>>> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
>>>> ffff880225c61028
>>>> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
>>>> ffff88020d36ff48
>>>> [  506.979055] Call Trace:
>>>> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
>>>> [videobuf2_core]
>>>> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
>>>> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>> +0x190/0x190
>>>> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
>>>> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>> +0x190/0x190
>>>> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>>> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>> [videobuf2_core]
>>>> [  506.985306]  RSP <ffff88020d36fe68>
>>>> [  506.986147] CR2: 0000000000000058
>>>> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
>>>>
>>>> First I thought is was related to CAM initialization but after removing
>>>> the CAMS and doing a fresh cold start I am still seeing the oopses.
>>>> After the oops everything is still functioning. I am using 3x DVBSKY
>>>> T980C. How can I debug this further?
>>>>
>>> The problem persist while my system went through a motherboard/mem/cpu
>>> upgrade. The oops occurs when one of the DVB-C cards get its first use
>>> (in my case mythtv):
>>>
>>> [  102.050294] si2157 18-0060: downloading firmware from file
>>> 'dvb-tuner-si2158-a20-01.fw'
>>> [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
>>> 0000000000000058
>>> [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>> [videobuf2_core]
>>> [  181.461019] PGD 0
>>> [  181.461024] Oops: 0002 [#1] SMP
>>> [  181.461032] Modules linked in: nf_conntrack_netbios_ns
>>> nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>> si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
>>> tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
>>> videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
>>> x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
>>> tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
>>> v4l2_common(OE) videodev(OE)
>>> [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
>>> async_memcpy crc32c_intel media(OE) async_pq async_xor
>>> ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
>>> drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
>>> serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
>>> i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
>>> nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
>>> [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
>>> OE  3.17.7-200.fc20.x86_64 #1
>>> [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>> O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
>>> [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
>>> ffff8800367a4000
>>> [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>> [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
>>> [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>> 000000000000000b
>>> [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
>>> 0000000000000058
>>> [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
>>> 0000000000000000
>>> [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
>>> 0000000000000058
>>> [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
>>> ffff880400999028
>>> [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
>>> knlGS:0000000000000000
>>> [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>> 00000000001407e0
>>> [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
>>> 0000000000000000
>>> [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
>>> 0000000000000400
>>> [  181.467541] Stack:
>>> [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
>>> 0000000000000000
>>> [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
>>> ffff880400999028
>>> [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
>>> ffff8800367a7f48
>>> [  181.469981] Call Trace:
>>> [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
>>> [videobuf2_core]
>>> [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
>>> [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>> +0x190/0x190
>>> [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
>>> [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>> +0x190/0x190
>>> [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>> [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>> [videobuf2_core]
>>> [  181.476271]  RSP <ffff8800367a7e68>
>>> [  181.476939] CR2: 0000000000000058
>>> [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
>>> [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
>>> successfully
>>> [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
>>> successfully
>>> [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
>>> successfully
>>>
>>> The system works for a while after this oops but eventually gives out.
>>> Any pointers how to debug this would be appreciated.
>>>
>>> Jurgen
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>>> the body of a message to majordomo at vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> 

videobuf2_core oops, recent media_build. dvbsky t980c's

[Chris Lee]

I'm running 3.19.0-rc1

This started on the Prof 7301 in the 3.18 kernel when vb2 was
implemented in the cx88 driver, previously vb2 wasn't used.

I do a lot of work in the dvb side of the media kernels but have never
done any work on the vb2 side of things and don't really feel
comfortable messing around in there. I'll stick to what I know.

Ive reported it in the V4L media mailing list, we'll see if it gets
any attention there.

Chris Lee

On Mon, Dec 29, 2014 at 12:11 PM, nick <xerofoify@gmail.com> wrote:
> Chris,
> Please try the latest rc kernel to see if the issue is fixed.
> Regards Nick
>
> On 2014-12-29 09:47 AM, Chris Lee wrote:
>> Im seeing the same issue and others using the Prof 7301, different
>> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
>> devices :(
>>
>> Chris Lee
>>
>> On Mon, Dec 29, 2014 at 7:47 AM, Chris Lee <updatelee@gmail.com> wrote:
>>> Im seeing the same issue and others using the Prof 7301, different
>>> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
>>> devices :(
>>>
>>> Chris Lee
>>>
>>> On Mon, Dec 29, 2014 at 7:38 AM, Jurgen Kramer <gtmkramer@xs4all.nl> wrote:
>>>>
>>>> On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
>>>>> I am seeing kernel oopses using recent media_builds on kernel 3.17:
>>>>>
>>>>> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
>>>>> 0000000000000058
>>>>> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>>> [videobuf2_core]
>>>>> [  506.969739] PGD 0
>>>>> [  506.969746] Oops: 0002 [#1] SMP
>>>>> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
>>>>> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
>>>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>>>> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
>>>>> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
>>>>> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
>>>>> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
>>>>> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
>>>>> tveeprom(OE) cx2341x(OE)
>>>>> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
>>>>> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
>>>>> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
>>>>> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
>>>>> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
>>>>> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
>>>>> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
>>>>> OE  3.17.4-200.fc20.x86_64 #1
>>>>> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>>>> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
>>>>> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
>>>>> ffff88020d36c000
>>>>> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
>>>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>>>> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
>>>>> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>>>> 000000000000000b
>>>>> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
>>>>> 0000000000000058
>>>>> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
>>>>> 000000000000158f
>>>>> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
>>>>> 0000000000000058
>>>>> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
>>>>> ffff880225c61028
>>>>> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
>>>>> knlGS:0000000000000000
>>>>> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>>>> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>>>> 00000000000007f0
>>>>> [  506.976021] Stack:
>>>>> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
>>>>> 0000000000000000
>>>>> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
>>>>> ffff880225c61028
>>>>> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
>>>>> ffff88020d36ff48
>>>>> [  506.979055] Call Trace:
>>>>> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
>>>>> [videobuf2_core]
>>>>> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
>>>>> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>>> +0x190/0x190
>>>>> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
>>>>> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>>> +0x190/0x190
>>>>> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>>>> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>>> [videobuf2_core]
>>>>> [  506.985306]  RSP <ffff88020d36fe68>
>>>>> [  506.986147] CR2: 0000000000000058
>>>>> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
>>>>>
>>>>> First I thought is was related to CAM initialization but after removing
>>>>> the CAMS and doing a fresh cold start I am still seeing the oopses.
>>>>> After the oops everything is still functioning. I am using 3x DVBSKY
>>>>> T980C. How can I debug this further?
>>>>>
>>>> The problem persist while my system went through a motherboard/mem/cpu
>>>> upgrade. The oops occurs when one of the DVB-C cards get its first use
>>>> (in my case mythtv):
>>>>
>>>> [  102.050294] si2157 18-0060: downloading firmware from file
>>>> 'dvb-tuner-si2158-a20-01.fw'
>>>> [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
>>>> 0000000000000058
>>>> [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>>> [videobuf2_core]
>>>> [  181.461019] PGD 0
>>>> [  181.461024] Oops: 0002 [#1] SMP
>>>> [  181.461032] Modules linked in: nf_conntrack_netbios_ns
>>>> nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
>>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>>> si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
>>>> tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
>>>> videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
>>>> x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
>>>> tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
>>>> v4l2_common(OE) videodev(OE)
>>>> [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
>>>> async_memcpy crc32c_intel media(OE) async_pq async_xor
>>>> ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
>>>> drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
>>>> serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
>>>> i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
>>>> nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
>>>> [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
>>>> OE  3.17.7-200.fc20.x86_64 #1
>>>> [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>>> O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
>>>> [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
>>>> ffff8800367a4000
>>>> [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
>>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>>> [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
>>>> [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>>> 000000000000000b
>>>> [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
>>>> 0000000000000058
>>>> [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
>>>> 0000000000000000
>>>> [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
>>>> 0000000000000058
>>>> [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
>>>> ffff880400999028
>>>> [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
>>>> knlGS:0000000000000000
>>>> [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>> [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>>> 00000000001407e0
>>>> [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
>>>> 0000000000000000
>>>> [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
>>>> 0000000000000400
>>>> [  181.467541] Stack:
>>>> [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
>>>> 0000000000000000
>>>> [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
>>>> ffff880400999028
>>>> [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
>>>> ffff8800367a7f48
>>>> [  181.469981] Call Trace:
>>>> [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
>>>> [videobuf2_core]
>>>> [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
>>>> [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>>> +0x190/0x190
>>>> [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
>>>> [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>>> +0x190/0x190
>>>> [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>>> [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>>> [videobuf2_core]
>>>> [  181.476271]  RSP <ffff8800367a7e68>
>>>> [  181.476939] CR2: 0000000000000058
>>>> [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
>>>> [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
>>>> successfully
>>>> [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
>>>> successfully
>>>> [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
>>>> successfully
>>>>
>>>> The system works for a while after this oops but eventually gives out.
>>>> Any pointers how to debug this would be appreciated.
>>>>
>>>> Jurgen
>>>>
>>>> --
>>>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>>>> the body of a message to majordomo at vger.kernel.org
>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies at kernelnewbies.org
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>

videobuf2_core oops, recent media_build. dvbsky t980c's

[nick]

Chris,
I would agree that is the best idea as of now. In addition,
just curious why don't you just git bisect this as this may
be easier then waiting.
Nick

On 2014-12-29 02:47 PM, Chris Lee wrote:
> I'm running 3.19.0-rc1
> 
> This started on the Prof 7301 in the 3.18 kernel when vb2 was
> implemented in the cx88 driver, previously vb2 wasn't used.
> 
> I do a lot of work in the dvb side of the media kernels but have never
> done any work on the vb2 side of things and don't really feel
> comfortable messing around in there. I'll stick to what I know.
> 
> Ive reported it in the V4L media mailing list, we'll see if it gets
> any attention there.
> 
> Chris Lee
> 
> On Mon, Dec 29, 2014 at 12:11 PM, nick <xerofoify@gmail.com> wrote:
>> Chris,
>> Please try the latest rc kernel to see if the issue is fixed.
>> Regards Nick
>>
>> On 2014-12-29 09:47 AM, Chris Lee wrote:
>>> Im seeing the same issue and others using the Prof 7301, different
>>> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
>>> devices :(
>>>
>>> Chris Lee
>>>
>>> On Mon, Dec 29, 2014 at 7:47 AM, Chris Lee <updatelee@gmail.com> wrote:
>>>> Im seeing the same issue and others using the Prof 7301, different
>>>> drivers, same vb2 usage though. Its defn a vb2 issue across multiple
>>>> devices :(
>>>>
>>>> Chris Lee
>>>>
>>>> On Mon, Dec 29, 2014 at 7:38 AM, Jurgen Kramer <gtmkramer@xs4all.nl> wrote:
>>>>>
>>>>> On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
>>>>>> I am seeing kernel oopses using recent media_builds on kernel 3.17:
>>>>>>
>>>>>> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
>>>>>> 0000000000000058
>>>>>> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>>>> [videobuf2_core]
>>>>>> [  506.969739] PGD 0
>>>>>> [  506.969746] Oops: 0002 [#1] SMP
>>>>>> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
>>>>>> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
>>>>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>>>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>>>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>>>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>>>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>>>>> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
>>>>>> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
>>>>>> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
>>>>>> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
>>>>>> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
>>>>>> tveeprom(OE) cx2341x(OE)
>>>>>> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
>>>>>> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
>>>>>> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
>>>>>> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
>>>>>> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
>>>>>> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
>>>>>> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
>>>>>> OE  3.17.4-200.fc20.x86_64 #1
>>>>>> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>>>>> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
>>>>>> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
>>>>>> ffff88020d36c000
>>>>>> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
>>>>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>>>>> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
>>>>>> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>>>>> 000000000000000b
>>>>>> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
>>>>>> 0000000000000058
>>>>>> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
>>>>>> 000000000000158f
>>>>>> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
>>>>>> 0000000000000058
>>>>>> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
>>>>>> ffff880225c61028
>>>>>> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
>>>>>> knlGS:0000000000000000
>>>>>> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>>>>> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>>>>> 00000000000007f0
>>>>>> [  506.976021] Stack:
>>>>>> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
>>>>>> 0000000000000000
>>>>>> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
>>>>>> ffff880225c61028
>>>>>> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
>>>>>> ffff88020d36ff48
>>>>>> [  506.979055] Call Trace:
>>>>>> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
>>>>>> [videobuf2_core]
>>>>>> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
>>>>>> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>>>> +0x190/0x190
>>>>>> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
>>>>>> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
>>>>>> +0x190/0x190
>>>>>> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>>>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>>>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>>>>> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>>>>>> [videobuf2_core]
>>>>>> [  506.985306]  RSP <ffff88020d36fe68>
>>>>>> [  506.986147] CR2: 0000000000000058
>>>>>> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
>>>>>>
>>>>>> First I thought is was related to CAM initialization but after removing
>>>>>> the CAMS and doing a fresh cold start I am still seeing the oopses.
>>>>>> After the oops everything is still functioning. I am using 3x DVBSKY
>>>>>> T980C. How can I debug this further?
>>>>>>
>>>>> The problem persist while my system went through a motherboard/mem/cpu
>>>>> upgrade. The oops occurs when one of the DVB-C cards get its first use
>>>>> (in my case mythtv):
>>>>>
>>>>> [  102.050294] si2157 18-0060: downloading firmware from file
>>>>> 'dvb-tuner-si2158-a20-01.fw'
>>>>> [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
>>>>> 0000000000000058
>>>>> [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>>>> [videobuf2_core]
>>>>> [  181.461019] PGD 0
>>>>> [  181.461024] Oops: 0002 [#1] SMP
>>>>> [  181.461032] Modules linked in: nf_conntrack_netbios_ns
>>>>> nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
>>>>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>>>>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>>>>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>>>>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>>>>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>>>>> si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
>>>>> tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
>>>>> videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
>>>>> x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
>>>>> tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
>>>>> v4l2_common(OE) videodev(OE)
>>>>> [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
>>>>> async_memcpy crc32c_intel media(OE) async_pq async_xor
>>>>> ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
>>>>> drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
>>>>> serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
>>>>> i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
>>>>> nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
>>>>> [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
>>>>> OE  3.17.7-200.fc20.x86_64 #1
>>>>> [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
>>>>> O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
>>>>> [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
>>>>> ffff8800367a4000
>>>>> [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
>>>>> vb2_thread+0x17a/0x480 [videobuf2_core]
>>>>> [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
>>>>> [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>>>>> 000000000000000b
>>>>> [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
>>>>> 0000000000000058
>>>>> [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
>>>>> 0000000000000000
>>>>> [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
>>>>> 0000000000000058
>>>>> [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
>>>>> ffff880400999028
>>>>> [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
>>>>> knlGS:0000000000000000
>>>>> [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>>> [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>>>>> 00000000001407e0
>>>>> [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
>>>>> 0000000000000000
>>>>> [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
>>>>> 0000000000000400
>>>>> [  181.467541] Stack:
>>>>> [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
>>>>> 0000000000000000
>>>>> [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
>>>>> ffff880400999028
>>>>> [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
>>>>> ffff8800367a7f48
>>>>> [  181.469981] Call Trace:
>>>>> [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
>>>>> [videobuf2_core]
>>>>> [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
>>>>> [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>>>> +0x190/0x190
>>>>> [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
>>>>> [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
>>>>> +0x190/0x190
>>>>> [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>>>>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>>>>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31
>>>>> [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
>>>>> [videobuf2_core]
>>>>> [  181.476271]  RSP <ffff8800367a7e68>
>>>>> [  181.476939] CR2: 0000000000000058
>>>>> [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
>>>>> [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
>>>>> successfully
>>>>> [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
>>>>> successfully
>>>>> [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
>>>>> successfully
>>>>>
>>>>> The system works for a while after this oops but eventually gives out.
>>>>> Any pointers how to debug this would be appreciated.
>>>>>
>>>>> Jurgen
>>>>>
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>>>>> the body of a message to majordomo at vger.kernel.org
>>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>
>>> _______________________________________________
>>> Kernelnewbies mailing list
>>> Kernelnewbies at kernelnewbies.org
>>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>>

Re: videobuf2_core oops, recent media_build. dvbsky t980c's

[Hans Verkuil]

On 12/29/2014 03:38 PM, Jurgen Kramer wrote:
> 
> On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
>> I am seeing kernel oopses using recent media_builds on kernel 3.17:
>>
>> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
>> 0000000000000058
>> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>> [videobuf2_core]
>> [  506.969739] PGD 0 
>> [  506.969746] Oops: 0002 [#1] SMP 
>> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
>> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
>> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
>> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
>> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
>> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
>> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
>> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
>> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
>> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
>> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
>> tveeprom(OE) cx2341x(OE)
>> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
>> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
>> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
>> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
>> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
>> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
>> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
>> OE  3.17.4-200.fc20.x86_64 #1
>> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
>> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
>> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
>> ffff88020d36c000
>> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
>> vb2_thread+0x17a/0x480 [videobuf2_core]
>> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
>> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
>> 000000000000000b
>> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
>> 0000000000000058
>> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
>> 000000000000158f
>> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
>> 0000000000000058
>> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
>> ffff880225c61028
>> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
>> knlGS:0000000000000000
>> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
>> 00000000000007f0
>> [  506.976021] Stack:
>> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
>> 0000000000000000
>> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
>> ffff880225c61028
>> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
>> ffff88020d36ff48
>> [  506.979055] Call Trace:
>> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
>> [videobuf2_core]
>> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
>> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
>> +0x190/0x190
>> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
>> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
>> +0x190/0x190
>> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
>> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
>> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
>> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
>> [videobuf2_core]
>> [  506.985306]  RSP <ffff88020d36fe68>
>> [  506.986147] CR2: 0000000000000058
>> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
>>
>> First I thought is was related to CAM initialization but after removing
>> the CAMS and doing a fresh cold start I am still seeing the oopses.
>> After the oops everything is still functioning. I am using 3x DVBSKY
>> T980C. How can I debug this further?
>>
> The problem persist while my system went through a motherboard/mem/cpu
> upgrade. The oops occurs when one of the DVB-C cards get its first use
> (in my case mythtv):
> 
> [  102.050294] si2157 18-0060: downloading firmware from file
> 'dvb-tuner-si2158-a20-01.fw'
> [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
> 0000000000000058
> [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  181.461019] PGD 0 
> [  181.461024] Oops: 0002 [#1] SMP 
> [  181.461032] Modules linked in: nf_conntrack_netbios_ns
> nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
> si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
> tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
> videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
> x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
> tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
> v4l2_common(OE) videodev(OE)
> [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
> async_memcpy crc32c_intel media(OE) async_pq async_xor
> ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
> drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
> serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
> i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
> nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
> [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
> OE  3.17.7-200.fc20.x86_64 #1
> [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
> O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
> [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
> ffff8800367a4000
> [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
> vb2_thread+0x17a/0x480 [videobuf2_core]
> [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
> [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> 000000000000000b
> [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
> 0000000000000058
> [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
> 0000000000000000
> [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
> 0000000000000058
> [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
> ffff880400999028
> [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
> knlGS:0000000000000000
> [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
> 00000000001407e0
> [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [  181.467541] Stack:
> [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
> 0000000000000000
> [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
> ffff880400999028
> [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
> ffff8800367a7f48
> [  181.469981] Call Trace:
> [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
> [videobuf2_core]
> [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
> [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
> +0x190/0x190
> [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
> [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
> +0x190/0x190
> [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
> [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  181.476271]  RSP <ffff8800367a7e68>
> [  181.476939] CR2: 0000000000000058
> [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
> [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
> successfully
> [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
> successfully
> [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
> successfully
> 
> The system works for a while after this oops but eventually gives out.
> Any pointers how to debug this would be appreciated.

Hmm, at first use. That's strange.

Add some printk lines to vb2_thread (drivers/media/v4l2-core/videobuf2-core.c)
in the for loop in order to narrow down which pointer is NULL.

Also add a printk in vb2_thread_stop() to see if that is called before the
oops occurs.

Regards,

	Hans

Re: videobuf2_core oops, recent media_build. dvbsky t980c's

[Jurgen Kramer]

Hi Hans,

On Mon, 2015-01-12 at 16:29 +0100, Hans Verkuil wrote:
> On 12/29/2014 03:38 PM, Jurgen Kramer wrote:
> > 
> > On Sat, 2014-12-27 at 10:35 +0100, Jurgen Kramer wrote:
> >> I am seeing kernel oopses using recent media_builds on kernel 3.17:
> >>
> >> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
> >> 0000000000000058
> >> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> >> [videobuf2_core]
> >> [  506.969739] PGD 0 
> >> [  506.969746] Oops: 0002 [#1] SMP 
> >> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
> >> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
> >> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
> >> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
> >> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
> >> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> >> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
> >> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
> >> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
> >> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
> >> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
> >> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
> >> tveeprom(OE) cx2341x(OE)
> >> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
> >> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
> >> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
> >> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
> >> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
> >> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
> >> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
> >> OE  3.17.4-200.fc20.x86_64 #1
> >> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
> >> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
> >> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
> >> ffff88020d36c000
> >> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
> >> vb2_thread+0x17a/0x480 [videobuf2_core]
> >> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
> >> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> >> 000000000000000b
> >> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
> >> 0000000000000058
> >> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
> >> 000000000000158f
> >> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
> >> 0000000000000058
> >> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
> >> ffff880225c61028
> >> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
> >> knlGS:0000000000000000
> >> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> >> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
> >> 00000000000007f0
> >> [  506.976021] Stack:
> >> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
> >> 0000000000000000
> >> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
> >> ffff880225c61028
> >> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
> >> ffff88020d36ff48
> >> [  506.979055] Call Trace:
> >> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
> >> [videobuf2_core]
> >> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
> >> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
> >> +0x190/0x190
> >> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
> >> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
> >> +0x190/0x190
> >> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
> >> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
> >> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
> >> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> >> [videobuf2_core]
> >> [  506.985306]  RSP <ffff88020d36fe68>
> >> [  506.986147] CR2: 0000000000000058
> >> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
> >>
> >> First I thought is was related to CAM initialization but after removing
> >> the CAMS and doing a fresh cold start I am still seeing the oopses.
> >> After the oops everything is still functioning. I am using 3x DVBSKY
> >> T980C. How can I debug this further?
> >>
> > The problem persist while my system went through a motherboard/mem/cpu
> > upgrade. The oops occurs when one of the DVB-C cards get its first use
> > (in my case mythtv):
> > 
> > [  102.050294] si2157 18-0060: downloading firmware from file
> > 'dvb-tuner-si2158-a20-01.fw'
> > [  181.460968] BUG: unable to handle kernel NULL pointer dereference at
> > 0000000000000058
> > [  181.460991] IP: [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
> > [videobuf2_core]
> > [  181.461019] PGD 0 
> > [  181.461024] Oops: 0002 [#1] SMP 
> > [  181.461032] Modules linked in: nf_conntrack_netbios_ns
> > nf_conntrack_broadcast ip6t_rpfilter cfg80211 rfkill ip6t_REJECT
> > xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
> > ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
> > ip6table_mangle ip6table_security ip6table_raw ip6table_filter
> > ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> > nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
> > si2157(OE) si2168(OE) i2c_mux cx25840(OE) cx23885(OE) altera_ci(OE)
> > tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE) videobuf2_core(OE)
> > videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq snd_seq_device
> > x86_pkg_temp_thermal snd_pcm snd_timer coretemp snd soundcore
> > tveeprom(OE) kvm_intel kvm cx2341x(OE) dvb_core(OE) rc_core(OE)
> > v4l2_common(OE) videodev(OE)
> > [  181.461264]  crct10dif_pclmul raid456 crc32_pclmul async_raid6_recov
> > async_memcpy crc32c_intel media(OE) async_pq async_xor
> > ghash_clmulni_intel xor async_tx microcode i915 i2c_algo_bit
> > drm_kms_helper drm shpchp e1000e raid6_pq i2c_i801 ptp pps_core mei_me
> > serio_raw mei i2c_hid sdhci_acpi sdhci tpm_tis mmc_core dw_dmac
> > i2c_designware_platform dw_dmac_core i2c_designware_core tpm acpi_pad
> > nfsd auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
> > [  181.461374] CPU: 7 PID: 2279 Comm: vb2-cx23885[0] Tainted: G
> > OE  3.17.7-200.fc20.x86_64 #1
> > [  181.461393] Hardware name: To Be Filled By O.E.M. To Be Filled By
> > O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
> > [  181.461413] task: ffff8803f5f3f5c0 ti: ffff8800367a4000 task.ti:
> > ffff8800367a4000
> > [  181.461429] RIP: 0010:[<ffffffffa04d833a>]  [<ffffffffa04d833a>]
> > vb2_thread+0x17a/0x480 [videobuf2_core]
> > [  181.461460] RSP: 0018:ffff8800367a7e68  EFLAGS: 00010246
> > [  181.461944] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> > 000000000000000b
> > [  181.462481] RDX: 0000000000000058 RSI: ffff8803f5f3f5c0 RDI:
> > 0000000000000058
> > [  181.462995] RBP: ffff8800367a7ec0 R08: ffff8800367a4000 R09:
> > 0000000000000000
> > [  181.463621] R10: 0000000000000004 R11: 0000000000000005 R12:
> > 0000000000000058
> > [  181.464151] R13: ffff880036875e80 R14: 0000000000000000 R15:
> > ffff880400999028
> > [  181.464660] FS:  0000000000000000(0000) GS:ffff88041fbc0000(0000)
> > knlGS:0000000000000000
> > [  181.465272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > [  181.465804] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
> > 00000000001407e0
> > [  181.466441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> > 0000000000000000
> > [  181.466990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> > 0000000000000400
> > [  181.467541] Stack:
> > [  181.468094]  ffff8803f5f3f5c0 0000000000000070 00ff880409993ae0
> > 0000000000000000
> > [  181.468672]  ffff880300000000 ffff880400999028 ffff8803e81c83c0
> > ffff880400999028
> > [  181.469334]  ffffffffa04d81c0 0000000000000000 0000000000000000
> > ffff8800367a7f48
> > [  181.469981] Call Trace:
> > [  181.470668]  [<ffffffffa04d81c0>] ? vb2_internal_qbuf+0x210/0x210
> > [videobuf2_core]
> > [  181.471292]  [<ffffffff810b04a8>] kthread+0xd8/0xf0
> > [  181.471987]  [<ffffffff810b03d0>] ? kthread_create_on_node
> > +0x190/0x190
> > [  181.472690]  [<ffffffff8172ebbc>] ret_from_fork+0x7c/0xb0
> > [  181.473333]  [<ffffffff810b03d0>] ? kthread_create_on_node
> > +0x190/0x190
> > [  181.474081] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
> > 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
> > c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
> > [  181.475582] RIP  [<ffffffffa04d833a>] vb2_thread+0x17a/0x480
> > [videobuf2_core]
> > [  181.476271]  RSP <ffff8800367a7e68>
> > [  181.476939] CR2: 0000000000000058
> > [  181.479707] ---[ end trace fc6ff9e31c18c55f ]---
> > [  183.034654] dvb_ca adapter 0: DVB CAM detected and initialised
> > successfully
> > [  369.140017] dvb_ca adapter 1: DVB CAM detected and initialised
> > successfully
> > [  449.206849] dvb_ca adapter 2: DVB CAM detected and initialised
> > successfully
> > 
> > The system works for a while after this oops but eventually gives out.
> > Any pointers how to debug this would be appreciated.
> 
> Hmm, at first use. That's strange.
> 
> Add some printk lines to vb2_thread (drivers/media/v4l2-core/videobuf2-core.c)
> in the for loop in order to narrow down which pointer is NULL.
> 
> Also add a printk in vb2_thread_stop() to see if that is called before the
> oops occurs.
OK, I'll put in some printks to see if it reveals the problem.
It seems my issues have shifted somewhat I now get these:

[570186.658591] vb2: counters for queue ffff880036876828: UNBALANCED!
[570186.658593] vb2:     setup: 1 start_streaming: 1 stop_streaming: 1
[570186.658594] vb2:     wait_prepare: 258956 wait_finish: 258957
[602624.204658] vb2: counters for queue ffff88040873b828: UNBALANCED!
[602624.204661] vb2:     setup: 1 start_streaming: 1 stop_streaming: 1
[602624.204661] vb2:     wait_prepare: 253535 wait_finish: 253536

And:
[639763.343177] page:ffffea000022bf80 count:1 mapcount:0 mapping:
(null) index:0x0
[639763.343180] page flags: 0x3ffff800000000()
[639763.343181] page dumped because:
VM_BUG_ON_PAGE(atomic_read(&page->_count) == 0)
[639763.343208] ------------[ cut here ]------------
[639763.344120] kernel BUG at include/linux/mm.h:321!
[639763.345072] invalid opcode: 0000 [#2] SMP 
[639763.345999] Modules linked in: fuse cfg80211 rfkill
nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT
xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
ip6table_mangle ip6table_security ip6table_raw ip6table_filter
ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
si2157(OE) si2168(OE) i2c_mux cx25840(OE) x86_pkg_temp_thermal coretemp
kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel cx23885(OE)
altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
videobuf2_core(OE) videobuf2_dma_sg(OE) ghash_clmulni_intel
videobuf2_memops(OE) snd_seq snd_seq_device snd_pcm snd_timer snd
soundcore tveeprom(OE)
[639763.349166]  cx2341x(OE) dvb_core(OE) rc_core(OE) v4l2_common(OE)
videodev(OE) media(OE) raid456 async_raid6_recov async_memcpy async_pq
async_xor xor async_tx raid6_pq microcode serio_raw i2c_i801 e1000e
mei_me ptp mei shpchp pps_core tpm_tis tpm sdhci_acpi sdhci i2c_hid
dw_dmac dw_dmac_core mmc_core i2c_designware_platform
i2c_designware_core i915 i2c_algo_bit drm_kms_helper drm acpi_pad nfsd
auth_rpcgss nfs_acl lockd sunrpc mxm_wmi wmi video
[639763.352438] CPU: 3 PID: 29599 Comm: DVBRead Tainted: G      D    OE
3.17.7-200.fc20.x86_64 #1
[639763.353571] Hardware name: To Be Filled By O.E.M. To Be Filled By
O.E.M./Z97 Extreme4, BIOS P1.50 12/17/2014
[639763.354687] task: ffff880006266220 ti: ffff880009010000 task.ti:
ffff880009010000
[639763.355813] RIP: 0010:[<ffffffff81193927>]  [<ffffffff81193927>]
__free_pages+0x47/0x50
[639763.356921] RSP: 0018:ffff880009013c40  EFLAGS: 00010246
[639763.358041] RAX: 0000000000000000 RBX: 000000000022bf80 RCX:
0000000000000006
[639763.359104] RDX: 0000000000000000 RSI: 0000000000000246 RDI:
000000000008afe0
[639763.360224] RBP: ffff880009013c40 R08: 000000000000000a R09:
0000000000000000
[639763.361247] R10: 000000000000065b R11: ffff880009013916 R12:
ffff8804091f1098
[639763.362239] R13: 00000000000001f8 R14: ffff880008afe000 R15:
0000000000000000
[639763.363201] FS:  00007fd3d97fa700(0000) GS:ffff88041fac0000(0000)
knlGS:0000000000000000
[639763.364141] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[639763.365055] CR2: 0000000002295028 CR3: 00000004079ca000 CR4:
00000000001407e0
[639763.365984] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[639763.366883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[639763.367750] Stack:
[639763.368641]  ffff880009013c60 ffffffff81193996 0000000009013c88
0000000008afe000
[639763.369510]  ffff880009013c70 ffffffff8101aca5 ffff880009013ca8
ffffffff810598c1
[639763.370420]  ffffffff81c2de00 ffff8804091f1098 00000000000001f8
ffff8803fdf77c00
[639763.371299] Call Trace:
[639763.372198]  [<ffffffff81193996>] free_pages+0x66/0x70
[639763.373053]  [<ffffffff8101aca5>] dma_generic_free_coherent
+0x25/0x30
[639763.373907]  [<ffffffff810598c1>] x86_swiotlb_free_coherent
+0x41/0x70
[639763.374785]  [<ffffffffa04f6ae9>] cx23885_free_buffer+0x79/0xc0
[cx23885]
[639763.375653]  [<ffffffff810d1374>] ? __wake_up+0x44/0x50
[639763.376595]  [<ffffffffa04f8d3f>] buffer_finish+0x1f/0x30 [cx23885]
[639763.377450]  [<ffffffffa037d294>] __vb2_queue_cancel+0x114/0x230
[videobuf2_core]
[639763.378345]  [<ffffffffa037f79e>] __reqbufs.isra.13+0xae/0x4b0
[videobuf2_core]
[639763.379196]  [<ffffffffa037fbd0>] vb2_reqbufs+0x30/0x40
[videobuf2_core]
[639763.380073]  [<ffffffffa037fe12>] vb2_thread_stop+0xa2/0x180
[videobuf2_core]
[639763.381014]  [<ffffffffa03a612a>] vb2_dvb_stop_feed+0x4a/0x60
[videobuf2_dvb]
[639763.381898]  [<ffffffffa0479315>] dmx_ts_feed_stop_filtering
+0x45/0xb0 [dvb_core]
[639763.382778]  [<ffffffffa0476a8a>] dvb_dmxdev_feed_stop+0x6a/0xc0
[dvb_core]
[639763.383659]  [<ffffffffa0476c21>] dvb_dmxdev_filter_stop+0x31/0xe0
[dvb_core]
[639763.384552]  [<ffffffffa0476f84>] dvb_demux_release+0x44/0x190
[dvb_core]
[639763.385411]  [<ffffffff81201f9c>] __fput+0xdc/0x1e0
[639763.386342]  [<ffffffff812020ee>] ____fput+0xe/0x10
[639763.387256]  [<ffffffff810aeb47>] task_work_run+0xa7/0xe0
[639763.388104]  [<ffffffff81013c97>] do_notify_resume+0x97/0xb0
[639763.388970]  [<ffffffff8172ef22>] int_signal+0x12/0x17
[639763.389809] Code: 00 00 00 00 85 f6 74 0c e8 f7 fc ff ff 5d c3 0f 1f
44 00 00 31 f6 e8 c9 fd ff ff 5d c3 31 d2 48 c7 c6 18 ad a4 81 e8 69 ca
ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 
[639763.391703] RIP  [<ffffffff81193927>] __free_pages+0x47/0x50
[639763.392595]  RSP <ffff880009013c40>
[639763.398360] ---[ end trace ecac1729e2883c95 ]---
[680738.726616] traps: polkitd[32250] general protection ip:7fe9a222c022
sp:7fff38b02150 error:0 in libmozjs-17.0.so[7fe9a20ed000+3b3000]
[684294.949321] vb2: counters for queue ffff88040873b828: UNBALANCED!
[684294.949323] vb2:     setup: 1 start_streaming: 1 stop_streaming: 1
[684294.949324] vb2:     wait_prepare: 240061 wait_finish: 240062

And also some of these:
195123.414590] cx23885[0]: mpeg risc op code error
[195123.414594] cx23885[0]: TS1 B - dma channel status dump
[195123.414598] cx23885[0]:   cmds: init risc lo   : 0x0261f000
[195123.414600] cx23885[0]:   cmds: init risc hi   : 0x00000000
[195123.414602] cx23885[0]:   cmds: cdt base       : 0x00010580
[195123.414605] cx23885[0]:   cmds: cdt size       : 0x0000000a
[195123.414607] cx23885[0]:   cmds: iq base        : 0x00010400
[195123.414609] cx23885[0]:   cmds: iq size        : 0x00000010
[195123.414612] cx23885[0]:   cmds: risc pc lo     : 0xb7262048
[195123.414615] cx23885[0]:   cmds: risc pc hi     : 0x00000000
[195123.414617] cx23885[0]:   cmds: iq wr ptr      : 0x00004105
[195123.414620] cx23885[0]:   cmds: iq rd ptr      : 0x00004109
[195123.414622] cx23885[0]:   cmds: cdt current    : 0x000105a8

Are those related issues?


Regards,
Jurgen

Re: videobuf2_core oops, recent media_build

[Hans Verkuil]

Hi Jurgen,

On 12/27/2014 10:35 AM, Jurgen Kramer wrote:
> I am seeing kernel oopses using recent media_builds on kernel 3.17:
> 
> [  506.969697] BUG: unable to handle kernel NULL pointer dereference at
> 0000000000000058
> [  506.969720] IP: [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  506.969739] PGD 0 
> [  506.969746] Oops: 0002 [#1] SMP 
> [  506.969754] Modules linked in: nf_conntrack_netbios_ns
> nf_conntrack_broadcast cfg80211 rfkill ip6t_rpfilter ip6t_REJECT
> xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter
> ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6
> ip6table_mangle ip6table_security ip6table_raw ip6table_filter
> ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw sp2(OE)
> si2157(OE) si2168(OE) i2c_mux nouveau cx25840(OE) cx23885(OE)
> altera_ci(OE) tda18271(OE) altera_stapl(OE) videobuf2_dvb(OE)
> videobuf2_core(OE) videobuf2_dma_sg(OE) videobuf2_memops(OE) snd_seq
> snd_seq_device snd_pcm snd_timer snd video i2c_algo_bit ttm
> drm_kms_helper soundcore iTCO_wdt ppdev gpio_ich iTCO_vendor_support
> tveeprom(OE) cx2341x(OE)
> [  506.969871]  coretemp dvb_core(OE) v4l2_common(OE) videodev(OE)
> media(OE) kvm crc32c_intel raid456 async_raid6_recov async_memcpy
> async_pq async_xor drm xor async_tx raid6_pq microcode serio_raw shpchp
> i7core_edac edac_core i2c_i801 lpc_ich mfd_core parport_pc parport
> ite_cir(OE) rc_core(OE) tpm_infineon tpm_tis tpm acpi_cpufreq nfsd
> auth_rpcgss nfs_acl lockd sunrpc mxm_wmi asix usbnet r8169 mii wmi
> [  506.969970] CPU: 0 PID: 3160 Comm: vb2-cx23885[0] Tainted: G
> OE  3.17.4-200.fc20.x86_64 #1
> [  506.969982] Hardware name: To Be Filled By O.E.M. To Be Filled By
> O.E.M./P55 Extreme, BIOS P2.70 08/20/2010
> [  506.969993] task: ffff8800bc18e220 ti: ffff88020d36c000 task.ti:
> ffff88020d36c000
> [  506.970002] RIP: 0010:[<ffffffffa03a233a>]  [<ffffffffa03a233a>]
> vb2_thread+0x17a/0x480 [videobuf2_core]
> [  506.970021] RSP: 0018:ffff88020d36fe68  EFLAGS: 00010246
> [  506.970663] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> 000000000000000b
> [  506.971305] RDX: 0000000000000058 RSI: ffff8800bc18e220 RDI:
> 0000000000000058
> [  506.971952] RBP: ffff88020d36fec0 R08: ffff88020d36c000 R09:
> 000000000000158f
> [  506.972611] R10: 00000000000030de R11: 0000000000000010 R12:
> 0000000000000058
> [  506.973275] R13: ffff8800b81814a0 R14: 0000000000000000 R15:
> ffff880225c61028
> [  506.973947] FS:  0000000000000000(0000) GS:ffff880233c00000(0000)
> knlGS:0000000000000000
> [  506.974634] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [  506.975321] CR2: 0000000000000058 CR3: 0000000001c14000 CR4:
> 00000000000007f0
> [  506.976021] Stack:
> [  506.976723]  ffff8800bc18e220 0000000000000070 00ffffff81c1b460
> 0000000000000000
> [  506.977442]  ffff880200000000 ffff880225c61028 ffff88020d1d8480
> ffff880225c61028
> [  506.978165]  ffffffffa03a21c0 0000000000000000 0000000000000000
> ffff88020d36ff48
> [  506.979055] Call Trace:
> [  506.979795]  [<ffffffffa03a21c0>] ? vb2_internal_qbuf+0x210/0x210
> [videobuf2_core]
> [  506.980545]  [<ffffffff810b0498>] kthread+0xd8/0xf0
> [  506.981293]  [<ffffffff810b03c0>] ? kthread_create_on_node
> +0x190/0x190
> [  506.982045]  [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
> [  506.982806]  [<ffffffff810b03c0>] ? kthread_create_on_node
> +0x190/0x190
> [  506.983568] Code: 89 e7 ba 58 00 00 00 0f 85 94 01 00 00 40 f6 c7 02
> 0f 85 72 01 00 00 40 f6 c7 04 0f 85 50 01 00 00 89 d1 31 c0 c1 e9 03 f6
> c2 04 <f3> 48 ab 74 0a c7 07 00 00 00 00 48 83 c7 04 f6 c2 02 74 0a 31 
> [  506.984464] RIP  [<ffffffffa03a233a>] vb2_thread+0x17a/0x480
> [videobuf2_core]
> [  506.985306]  RSP <ffff88020d36fe68>
> [  506.986147] CR2: 0000000000000058
> [  506.990986] ---[ end trace 1973fbcab83c3353 ]---
> 
> First I thought is was related to CAM initialization but after removing
> the CAMS and doing a fresh cold start I am still seeing the oopses.
> After the oops everything is still functioning. I am using 3x DVBSKY
> T980C. How can I debug this further?

Sorry for the delay, I was on vacation.

Do you get this when you start streaming, stop streaming or during streaming?

I strongly suspect a race condition that can occur when stopping streaming,
but I am not aware of race conditions when starting or during streaming.

Please let me know when you get this, as that will be very useful information
for me.

Regards,

	Hans