Re: em28xx list_add corruption reported by list debug
Em Sun, 22 Dec 2013 00:27:21 +0200 Antti Palosaari cr...@iki.fi escreveu: I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 It seems that there's something bad on em28174 registration: it should not be creating a v4l2 device, if the device is DVB only. The thing is that, when this driver was created, all devices were either analog only or hybrid. Only very recently, pure DVB devices got added. It shouldn't be that hard to split em28xx_init_dev() into a few routines that would only register v4l2 if the device has analog support. Again, this changeset: https://patchwork.linuxtv.org/patch/17967/ Seems to be part of such solution, as it already splits the v4l2 register logic into a separate function. joulu 22 00:08:31 localhost.localdomain kernel: [ cut here ] joulu 22 00:08:31 localhost.localdomain kernel: WARNING: CPU: 3 PID: 6892 at lib/list_debug.c:33 __list_add+0xac/0xc0() joulu 22 00:08:31 localhost.localdomain kernel: list_add corruption. prev-next should be next (88030b686498), but was (null). (prev=88030c6c1748). joulu 22 00:08:31 localhost.localdomain kernel: Modules linked in: rc_pinnacle_pctv_hd(O) em28xx_rc(O) tda18271(O) cxd2820r(O) em28xx_dvb(O) r820t(O) mn88472(O) rtl2832_sd...b_usb_af901 joulu 22 00:08:31 localhost.localdomain kernel: CPU: 3 PID: 6892 Comm: cat Tainted: G C O 3.13.0-rc1+ #77 joulu 22 00:08:31 localhost.localdomain kernel: Hardware name: System manufacturer System Product Name/M5A78L-M/USB3, BIOS 150311/14/2012 joulu 22 00:08:31 localhost.localdomain kernel: 0009 8803052afcb8 816b8da9 8803052afd00 joulu 22 00:08:31 localhost.localdomain kernel: 8803052afcf0 8106bcfd 88030c6c5348 88030b686498 joulu 22 00:08:31 localhost.localdomain kernel: 88030c6c1748 0292 0001 8803052afd50 joulu 22 00:08:31 localhost.localdomain kernel: Call Trace: joulu 22 00:08:31 localhost.localdomain kernel: [816b8da9] dump_stack+0x4d/0x66 joulu 22 00:08:31 localhost.localdomain kernel: [8106bcfd] warn_slowpath_common+0x7d/0xa0 joulu 22 00:08:31 localhost.localdomain kernel: [8106bd6c] warn_slowpath_fmt+0x4c/0x50 joulu 22 00:08:31 localhost.localdomain kernel: [8134c2dc] __list_add+0xac/0xc0 joulu 22 00:08:31 localhost.localdomain kernel: [a0273a7b] buffer_queue+0x7b/0xb0 [em28xx] joulu 22 00:08:31 localhost.localdomain kernel: [a025a2d4] __enqueue_in_driver+0x74/0x80 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025c568] vb2_streamon+0xa8/0x190 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025dd12] __vb2_init_fileio+0x332/0x3a0 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025e733] __vb2_perform_fileio+0x483/0x620 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025eae4] vb2_fop_read+0xc4/0x5e0 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a022da55] v4l2_read+0x65/0xb0 [videodev] joulu 22 00:08:31 localhost.localdomain kernel: [811cc498] vfs_read+0x98/0x170 joulu 22 00:08:31 localhost.localdomain kernel: [811ccfdc] SyS_read+0x4c/0xa0 joulu 22 00:08:31 localhost.localdomain kernel: [8110affc] ? __audit_syscall_entry+0x9c/0xf0 joulu 22 00:08:31 localhost.localdomain kernel: [816ca729] system_call_fastpath+0x16/0x1b joulu 22 00:08:31 localhost.localdomain kernel: ---[ end trace dcb247cebbcc2a82 ]--- -- Cheers, Mauro -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: em28xx list_add corruption reported by list debug
Em Sun, 22 Dec 2013 13:06:00 -0200 Mauro Carvalho Chehab m.che...@samsung.com escreveu: Em Sun, 22 Dec 2013 00:27:21 +0200 Antti Palosaari cr...@iki.fi escreveu: I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 It seems that there's something bad on em28174 registration: it should not be creating a v4l2 device, if the device is DVB only. The thing is that, when this driver was created, all devices were either analog only or hybrid. Only very recently, pure DVB devices got added. It shouldn't be that hard to split em28xx_init_dev() into a few routines that would only register v4l2 if the device has analog support. Again, this changeset: https://patchwork.linuxtv.org/patch/17967/ Seems to be part of such solution, as it already splits the v4l2 register logic into a separate function. Ok, if I didn't make any mistake, this changeset should do the trick: https://patchwork.linuxtv.org/patch/21282/ Please notice that this is compile-tested only. Regards, Mauro -- Cheers, Mauro -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: em28xx list_add corruption reported by list debug
On 22.12.2013 17:55, Mauro Carvalho Chehab wrote: Em Sun, 22 Dec 2013 13:06:00 -0200 Mauro Carvalho Chehab m.che...@samsung.com escreveu: Em Sun, 22 Dec 2013 00:27:21 +0200 Antti Palosaari cr...@iki.fi escreveu: I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 It seems that there's something bad on em28174 registration: it should not be creating a v4l2 device, if the device is DVB only. The thing is that, when this driver was created, all devices were either analog only or hybrid. Only very recently, pure DVB devices got added. It shouldn't be that hard to split em28xx_init_dev() into a few routines that would only register v4l2 if the device has analog support. Again, this changeset: https://patchwork.linuxtv.org/patch/17967/ Seems to be part of such solution, as it already splits the v4l2 register logic into a separate function. Ok, if I didn't make any mistake, this changeset should do the trick: https://patchwork.linuxtv.org/patch/21282/ Please notice that this is compile-tested only. I started to testing that patch, but now I get following compilation errors: WARNING: em28xx_detect_sensor [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_init_camera [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_resolution_set [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_colorlevels_set_default [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_outfmt [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_read_reg_req_len [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_wake_i2c [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_alternate [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_vbi_supported [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_release_resources [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_boards [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! anyhow, I am not sure if those are related or not. I will re-compile whole kernel to see (build only media). regards Antti -- http://palosaari.fi/ -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: em28xx list_add corruption reported by list debug
On 22.12.2013 18:17, Antti Palosaari wrote: On 22.12.2013 17:55, Mauro Carvalho Chehab wrote: Em Sun, 22 Dec 2013 13:06:00 -0200 Mauro Carvalho Chehab m.che...@samsung.com escreveu: Em Sun, 22 Dec 2013 00:27:21 +0200 Antti Palosaari cr...@iki.fi escreveu: I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 It seems that there's something bad on em28174 registration: it should not be creating a v4l2 device, if the device is DVB only. The thing is that, when this driver was created, all devices were either analog only or hybrid. Only very recently, pure DVB devices got added. It shouldn't be that hard to split em28xx_init_dev() into a few routines that would only register v4l2 if the device has analog support. Again, this changeset: https://patchwork.linuxtv.org/patch/17967/ Seems to be part of such solution, as it already splits the v4l2 register logic into a separate function. Ok, if I didn't make any mistake, this changeset should do the trick: https://patchwork.linuxtv.org/patch/21282/ Please notice that this is compile-tested only. I started to testing that patch, but now I get following compilation errors: WARNING: em28xx_detect_sensor [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_init_camera [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_resolution_set [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_colorlevels_set_default [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_outfmt [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_read_reg_req_len [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_wake_i2c [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_alternate [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_vbi_supported [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_release_resources [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_boards [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! anyhow, I am not sure if those are related or not. I will re-compile whole kernel to see (build only media). It builds very fast as compile caching. Errors are still there. My tree is latest media/master + my SDR patches. CRC d20c387c Kernel: arch/x86/boot/bzImage is ready (#78) ERROR: em28xx_detect_sensor [drivers/media/usb/em28xx/em28xx.ko] undefined! ERROR: em28xx_init_camera [drivers/media/usb/em28xx/em28xx.ko] undefined! ERROR: em28xx_resolution_set [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_colorlevels_set_default [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_set_outfmt [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_read_reg_req_len [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_wake_i2c [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_set_alternate [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_vbi_supported [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_release_resources [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! ERROR: em28xx_boards [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 regards Antti -- http://palosaari.fi/ -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: em28xx list_add corruption reported by list debug
Em Sun, 22 Dec 2013 18:17:50 +0200 Antti Palosaari cr...@iki.fi escreveu: On 22.12.2013 17:55, Mauro Carvalho Chehab wrote: Em Sun, 22 Dec 2013 13:06:00 -0200 Mauro Carvalho Chehab m.che...@samsung.com escreveu: Em Sun, 22 Dec 2013 00:27:21 +0200 Antti Palosaari cr...@iki.fi escreveu: I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 It seems that there's something bad on em28174 registration: it should not be creating a v4l2 device, if the device is DVB only. The thing is that, when this driver was created, all devices were either analog only or hybrid. Only very recently, pure DVB devices got added. It shouldn't be that hard to split em28xx_init_dev() into a few routines that would only register v4l2 if the device has analog support. Again, this changeset: https://patchwork.linuxtv.org/patch/17967/ Seems to be part of such solution, as it already splits the v4l2 register logic into a separate function. Ok, if I didn't make any mistake, this changeset should do the trick: https://patchwork.linuxtv.org/patch/21282/ Please notice that this is compile-tested only. I started to testing that patch, but now I get following compilation errors: WARNING: em28xx_detect_sensor [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_init_camera [drivers/media/usb/em28xx/em28xx.ko] undefined! WARNING: em28xx_resolution_set [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_colorlevels_set_default [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_outfmt [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_read_reg_req_len [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_wake_i2c [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_set_alternate [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_vbi_supported [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_release_resources [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! WARNING: em28xx_boards [drivers/media/usb/em28xx/em28xx-v4l.ko] undefined! anyhow, I am not sure if those are related or not. I will re-compile whole kernel to see (build only media). That's the lack of exporting symbols or moving the code. I'm currently working on testing this patchset. regards Antti -- Cheers, Mauro -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
em28xx list_add corruption reported by list debug
I ran also this kind of bug. Device was PCTV 290e, which has that video unused. I have no any analog em28xx webcam to test if that happens here too. Fortunately I found one video device which does not crash nor dump debug bug warnings. It is some old gspca webcam. Have to look example how those videobuf callbacks are implemented there.. regards Antti [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Invalid argument [crope@localhost linux]$ cat /dev/video0 cat: /dev/video0: Device or resource busy [crope@localhost linux]$ joulu 22 00:08:24 localhost.localdomain kernel: em28174 #0: no endpoint for analog mode and transfer type 0 joulu 22 00:08:31 localhost.localdomain kernel: [ cut here ] joulu 22 00:08:31 localhost.localdomain kernel: WARNING: CPU: 3 PID: 6892 at lib/list_debug.c:33 __list_add+0xac/0xc0() joulu 22 00:08:31 localhost.localdomain kernel: list_add corruption. prev-next should be next (88030b686498), but was (null). (prev=88030c6c1748). joulu 22 00:08:31 localhost.localdomain kernel: Modules linked in: rc_pinnacle_pctv_hd(O) em28xx_rc(O) tda18271(O) cxd2820r(O) em28xx_dvb(O) r820t(O) mn88472(O) rtl2832_sd...b_usb_af901 joulu 22 00:08:31 localhost.localdomain kernel: CPU: 3 PID: 6892 Comm: cat Tainted: G C O 3.13.0-rc1+ #77 joulu 22 00:08:31 localhost.localdomain kernel: Hardware name: System manufacturer System Product Name/M5A78L-M/USB3, BIOS 150311/14/2012 joulu 22 00:08:31 localhost.localdomain kernel: 0009 8803052afcb8 816b8da9 8803052afd00 joulu 22 00:08:31 localhost.localdomain kernel: 8803052afcf0 8106bcfd 88030c6c5348 88030b686498 joulu 22 00:08:31 localhost.localdomain kernel: 88030c6c1748 0292 0001 8803052afd50 joulu 22 00:08:31 localhost.localdomain kernel: Call Trace: joulu 22 00:08:31 localhost.localdomain kernel: [816b8da9] dump_stack+0x4d/0x66 joulu 22 00:08:31 localhost.localdomain kernel: [8106bcfd] warn_slowpath_common+0x7d/0xa0 joulu 22 00:08:31 localhost.localdomain kernel: [8106bd6c] warn_slowpath_fmt+0x4c/0x50 joulu 22 00:08:31 localhost.localdomain kernel: [8134c2dc] __list_add+0xac/0xc0 joulu 22 00:08:31 localhost.localdomain kernel: [a0273a7b] buffer_queue+0x7b/0xb0 [em28xx] joulu 22 00:08:31 localhost.localdomain kernel: [a025a2d4] __enqueue_in_driver+0x74/0x80 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025c568] vb2_streamon+0xa8/0x190 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025dd12] __vb2_init_fileio+0x332/0x3a0 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025e733] __vb2_perform_fileio+0x483/0x620 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a025eae4] vb2_fop_read+0xc4/0x5e0 [videobuf2_core] joulu 22 00:08:31 localhost.localdomain kernel: [a022da55] v4l2_read+0x65/0xb0 [videodev] joulu 22 00:08:31 localhost.localdomain kernel: [811cc498] vfs_read+0x98/0x170 joulu 22 00:08:31 localhost.localdomain kernel: [811ccfdc] SyS_read+0x4c/0xa0 joulu 22 00:08:31 localhost.localdomain kernel: [8110affc] ? __audit_syscall_entry+0x9c/0xf0 joulu 22 00:08:31 localhost.localdomain kernel: [816ca729] system_call_fastpath+0x16/0x1b joulu 22 00:08:31 localhost.localdomain kernel: ---[ end trace dcb247cebbcc2a82 ]--- -- http://palosaari.fi/ -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
