BUG: unable to handle kernel paging request at XXX in si2168_set_frontend call

[comio]

Hi,

Before all, I'm using a gentoo kernel based on 4.14.1 (gentoo-sources-4.14.1, see 4.14-1 Patch List) and I known that you are supporting only Ubuntu based kernel.

I purchased a WinTV-DualHD in order to use with my Plex Server.

I applied all patches provided by you for 4.12 vanilla, but I'm having the crash dump attached. Can you give me some hint? will these patches pushed on kernel mainstream?

Thanks a lot,

luigi

[comio]

gentoobox dvb-frontends # gdb ./si2168.o
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Reading symbols from ./si2168.o...done.
(gdb) list si2168_set_frontend+0x341/0x5b0
Function "si2168_set_frontend+0x341/0x5b0" not defined.
(gdb) list *(si2168_set_frontend+0x341/0x5b0)
0x630 is in si2168_set_frontend (drivers/media/dvb-frontends/si2168.c:224).
219     dev_dbg(&client->dev, "failed=%d\n", ret);
220     return ret;
221 }
222 
223 static int si2168_set_frontend(struct dvb_frontend *fe)
224 {
225     struct i2c_client *client = fe->demodulator_priv;
226     struct si2168_dev *dev = i2c_get_clientdata(client);
227     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
228     struct si2168_config *config = client->dev.platform_data;
(gdb) 

wrong fe->demodulator_priv?

[comio]

dmesg:

[ 6.389331] em28xx 1-5.2:1.0: New device HCW dualHD @ 480 Mbps (2040:0265, interface 0, class 0) [ 6.389343] em28xx 1-5.2:1.0: DVB interface 0 found: isoc [ 6.389389] em28xx 1-5.2:1.0: chip ID is em28174 [ 7.595105] em28xx 1-5.2:1.0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x2be4c2c8 [ 7.595110] em28xx 1-5.2:1.0: EEPROM info: [ 7.595114] em28xx 1-5.2:1.0: microcode start address = 0x0004, boot configuration = 0x01 [ 7.601916] em28xx 1-5.2:1.0: AC97 audio (5 sample rates) [ 7.601920] em28xx 1-5.2:1.0: 500mA max power [ 7.601924] em28xx 1-5.2:1.0: Table at offset 0x27, strings=0x0e6a, 0x1888, 0x087e [ 7.602429] em28xx 1-5.2:1.0: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 7.604815] tveeprom: Hauppauge model 204109, rev B3I6, serial# 13962917 [ 7.604819] tveeprom: tuner model is SiLabs Si2157 (idx 186, type 4) [ 7.604821] tveeprom: TV standards PAL(B/G) NTSC(M) PAL(I) SECAM(L/L') PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xfc) [ 7.604822] tveeprom: audio processor is None (idx 0) [ 7.604823] tveeprom: has no radio, has IR receiver, has no IR transmitter [ 7.604829] em28xx 1-5.2:1.0: dvb set to isoc mode. [ 7.604899] em28xx 1-5.2:1.0: chip ID is em28174 [ 8.810920] em28xx 1-5.2:1.0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x2be4c2c8 [ 8.810923] em28xx 1-5.2:1.0: EEPROM info: [ 8.810925] em28xx 1-5.2:1.0: microcode start address = 0x0004, boot configuration = 0x01 [ 8.817318] em28xx 1-5.2:1.0: AC97 audio (5 sample rates) [ 8.817322] em28xx 1-5.2:1.0: 500mA max power [ 8.817326] em28xx 1-5.2:1.0: Table at offset 0x27, strings=0x0e6a, 0x1888, 0x087e [ 8.817541] em28xx 1-5.2:1.0: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 8.819762] tveeprom: Hauppauge model 204109, rev B3I6, serial# 13962917 [ 8.819765] tveeprom: tuner model is SiLabs Si2157 (idx 186, type 4) [ 8.819767] tveeprom: TV standards PAL(B/G) NTSC(M) PAL(I) SECAM(L/L') PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xfc) [ 8.819769] tveeprom: audio processor is None (idx 0) [ 8.819770] tveeprom: has no radio, has IR receiver, has no IR transmitter [ 8.819777] em28xx 1-5.2:1.0: dvb ts2 set to isoc mode. [ 9.018610] usbcore: registered new interface driver em28xx [ 9.064255] em28xx 1-5.2:1.0: Binding DVB extension [ 9.083848] i2c i2c-11: Added multiplexed i2c bus 14 [ 9.083853] si2168 11-0064: Silicon Labs Si2168-B40 successfully identified [ 9.083855] si2168 11-0064: firmware version: B 4.0.2 [ 9.094255] si2157_probe: probing si2157 tuner fe=ffff8d509a2e7828 cfg=ffffa3d380e838d8 addr=0X60 [ 9.094258] si2157_setup_configuration: client=ffff8d508bddd000 [ 9.094260] si2157_setup_configuration: dev= (null) [ 9.094268] si2157_attach (14-0060) [ 9.094270] si2157 14-0060: creating new instance [ 9.094271] si2157_attach: instance=1 [ 9.094272] si2157_attach(): new instance for tuner @0x60 [ 9.094273] si2157_setup_configuration: client=ffff8d508bddd000 [ 9.094274] si2157_setup_configuration: dev=ffff8d508bdddc00 [ 9.094276] si2157_setup_configuration(0x60): dvb driver submitted configuration; port=1 invert=0 [ 9.094753] cfg->mdev=ffff8d50a9aaf800 [ 9.094762] si2157 14-0060: Silicon Labs Si2147/2148/2157/2158 successfully attached [ 9.094791] dvbdev: DVB: registering new adapter (1-5.2:1.0) [ 9.094796] em28xx 1-5.2:1.0: DVB: registering adapter 0 frontend 0 (Silicon Labs Si2168)... [ 9.094801] dvbdev: dvb_create_media_entity: media entity 'Silicon Labs Si2168' registered. [ 9.095325] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 9.097041] em28xx 1-5.2:1.0: DVB extension successfully initialized [ 9.097047] em28xx 1-5.2:1.0: Binding DVB extension [ 9.104587] i2c i2c-13: Added multiplexed i2c bus 15 [ 9.104592] si2168 13-0067: Silicon Labs Si2168-B40 successfully identified [ 9.104594] si2168 13-0067: firmware version: B 4.0.2 [ 9.106869] si2157_probe: probing si2157 tuner fe=ffff8d5092136828 cfg=ffffa3d380e838d8 addr=0X63 [ 9.106871] si2157_setup_configuration: client=ffff8d508a42c400 [ 9.106873] si2157_setup_configuration: dev= (null) [ 9.106883] si2157_attach (15-0063) [ 9.106885] si2157 15-0063: creating new instance [ 9.106886] si2157_attach: instance=1 [ 9.106887] si2157_attach(): new instance for tuner @0x63 [ 9.106888] si2157_setup_configuration: client=ffff8d508a42c400 [ 9.106889] si2157_setup_configuration: dev=ffff8d508a42cc00 [ 9.106891] si2157_setup_configuration(0x63): dvb driver submitted configuration; port=1 invert=0 [ 9.107461] cfg->mdev=ffff8d5090c0a800 [ 9.107474] si2157 15-0063: Silicon Labs Si2147/2148/2157/2158 successfully attached [ 9.107526] dvbdev: DVB: registering new adapter (1-5.2:1.0) [ 9.107531] em28xx 1-5.2:1.0: DVB: registering adapter 1 frontend 0 (Silicon Labs Si2168)... [ 9.107536] dvbdev: dvb_create_media_entity: media entity 'Silicon Labs Si2168' registered. [ 9.108099] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 9.109882] em28xx 1-5.2:1.0: DVB extension successfully initialized [ 9.109888] em28xx: Registered (Em28xx dvb Extension) extension [ 9.130798] em28xx 1-5.2:1.0: Registering input extension [ 9.160061] rc_core: IR keymap rc-hauppauge not found [ 9.160072] Registered IR keymap rc-empty [ 9.160367] rc rc0: 1-5.2:1.0 IR as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5.2/1-5.2:1.0/rc/rc0 [ 9.160424] input: 1-5.2:1.0 IR as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5.2/1-5.2:1.0/rc/rc0/input16 [ 9.160706] em28xx 1-5.2:1.0: Input extension successfully initialized [ 9.160710] em28xx 1-5.2:1.0: Remote control support is not available for this card. [ 9.160711] em28xx: Registered (Em28xx Input Extension) extension

[ 538.961143] si2157 14-0060: found a 'Silicon Labs Si2157-A30' [ 539.003809] si2157 14-0060: firmware version: 3.0.5 [ 539.052860] BUG: unable to handle kernel paging request at ffffa3d380e838d3 [ 539.052898] IP: si2168_set_frontend+0x341/0x5b0 [si2168] [ 539.052907] PGD 46e125067 P4D 46e125067 PUD 46e130067 PMD 465e41067 PTE 0 [ 539.052931] Oops: 0000 [#1] SMP [ 539.052939] Modules linked in: cfg80211 xt_nat veth nf_conntrack_netlink xfrm_user xt_CHECKSUM xfrm_algo overlay xt_addrtype br_netfilter devlink arc4 md4 cifs ccm fscache nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter xt_tcpudp ipt_REJECT nf_reject_ipv4 xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 ip_set ebtable_nat ebtable_broute ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c em28xx_rc rc_core si2157 si2168 i2c_mux em28xx_dvb dvb_core iptable_mangle bridge stp llc iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter nf_tables nfnetlink em28xx tveeprom v4l2_common videodev [ 539.053141] input_leds led_class media vfat fat intel_rapl intel_powerclamp coretemp iTCO_wdt iTCO_vendor_support kvm_intel kvm irqbypass punit_atom_debug crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_hdmi pcbc snd_hda_codec_realtek snd_hda_codec_generic aesni_intel snd_intel_sst_acpi aes_x86_64 crypto_simd snd_hda_intel glue_helper snd_soc_rt5670 snd_intel_sst_core cryptd snd_hda_codec snd_soc_sst_atom_hifi2_platform snd_soc_rl6231 snd_soc_sst_match snd_hwdep snd_soc_core pcspkr r8169 snd_hda_core mei_txe snd_compress mei ac97_bus i2c_i801 mii lpc_ich snd_pcm snd_timer snd soundcore rtc_cmos intel_int0002_vgpio acpi_pad binfmt_misc sch_fq_codel ip_tables x_tables uas usb_storage xhci_pci xhci_hcd ahci libahci i2c_hid pwm_lpss_platform 8250_dw pwm_lpss pinctrl_cherryview nct6775 hwmon_vid [ 539.053359] CPU: 3 PID: 3698 Comm: kdvb-ad-0-fe-0 Not tainted 4.14.1-gentoo #1 [ 539.053366] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./N3700-ITX, BIOS P1.80 01/11/2017 [ 539.053375] task: ffff8d507739c240 task.stack: ffffa3d380d2c000 [ 539.053389] RIP: 0010:si2168_set_frontend+0x341/0x5b0 [si2168] [ 539.053398] RSP: 0018:ffffa3d380d2fa00 EFLAGS: 00010202 [ 539.053409] RAX: 00000000000000f0 RBX: ffff8d509a2e7828 RCX: 0000000000000000 [ 539.053417] RDX: ffff8d507739c240 RSI: 0000000000000002 RDI: ffff8d509a2e7800 [ 539.053425] RBP: ffffa3d380d2fa68 R08: 000000000001ee20 R09: ffffffffa87b2eed [ 539.053433] R10: ffff8d50a6af91e1 R11: 0000000000000000 R12: ffff8d508bdde000 [ 539.053441] R13: ffffa3d380e838c0 R14: 00000000000000f8 R15: ffff8d509a2e7800 [ 539.053451] FS: 0000000000000000(0000) GS:ffff8d50bfd80000(0000) knlGS:0000000000000000 [ 539.053459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 539.053467] CR2: ffffa3d380e838d3 CR3: 00000001f2e08000 CR4: 00000000001006e0 [ 539.053475] Call Trace: [ 539.053513] dvb_frontend_swzigzag_autotune+0x16e/0x2f0 [dvb_core] [ 539.053552] dvb_frontend_swzigzag+0x2fa/0x3a0 [dvb_core] [ 539.053570] ? enqueue_entity+0x5c/0x60 [ 539.053583] ? put_prev_entity+0x2f/0x5e0 [ 539.053596] ? pick_next_task_fair+0x155/0x590 [ 539.053609] ? switch_to+0x1f3/0x4e0 [ 539.053622] ? lock_timer_base+0x75/0x90 [ 539.053634] ? try_to_del_timer_sync+0x53/0x80 [ 539.053646] ? del_timer_sync+0x39/0x40 [ 539.053660] ? schedule_timeout+0x18a/0x350 [ 539.053676] ? si2157_init+0x30e/0x640 [si2157] [ 539.053688] ? call_timer_fn+0x130/0x130 [ 539.053717] dvb_frontend_thread+0x4dc/0x6d0 [dvb_core] [ 539.053731] ? wait_woken+0x80/0x80 [ 539.053745] kthread+0x125/0x140 [ 539.053772] ? dtv_set_frontend+0x410/0x410 [dvb_core] [ 539.053785] ? kthread_create_on_node+0x70/0x70 [ 539.053796] ret_from_fork+0x25/0x30 [ 539.053806] Code: 61 fd ff ff 8b 05 c5 19 00 00 89 45 a8 0f b7 05 bf 19 00 00 66 89 45 ac 0f b6 45 a4 41 09 c6 3c f0 44 88 75 ac 0f 84 1e 02 00 00 <41> 80 7d 13 00 74 04 80 4d ad 01 48 8d 75 a8 49 bd 06 00 00 00 [ 539.053970] RIP: si2168_set_frontend+0x341/0x5b0 [si2168] RSP: ffffa3d380d2fa00 [ 539.053977] CR2: ffffa3d380e838d3 [ 539.053988] ---[ end trace 505f4534db9a4a36 ]---

[comio]

I removed the 0024 (rollback of vmalloc usage)... now it seems more stable.

ciao

luigi

[b-rad-NDi]

Apologies, been super busy with other responsibilities. Interesting that this patch appears to break mainline, when Ubuntu is broken with out it. I should move this to only apply to Ubuntu builds.

I am still going to investigate this issue though, it seems a strange place to oops.

I've been massaging all the patches lately to pass checkpatch, pretty much done now so will begin sending them to the mailing list.

[b-rad-NDi]

@comio : I have removed the vmalloc revert. Have you gotten this particular oops again since this report? For me on 4.13 with the current patch set DualHD has been quite stable.

[comio]

Hi @b-rad-NDi ,

I rebased your 4.13 patches on the 4.15.6 (I like dangerous life). For now all seems to work fine. I everyday record a on-the-air channel and I still haven't kernel crash. I hope to see your effort on mainline kernel.

ciao

luigi

[b-rad-NDi]

Still awaiting lineage confirmation on a few patches for sign off, then they will start getting submitted in groups.