From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m5CEAUcY024718 for ; Thu, 12 Jun 2008 10:10:30 -0400 Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m5CE9l6g027907 for ; Thu, 12 Jun 2008 10:09:48 -0400 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1K6nUk-0005Uq-4d for video4linux-list@redhat.com; Thu, 12 Jun 2008 14:09:42 +0000 Received: from 82-135-208-232.static.zebra.lt ([82.135.208.232]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 12 Jun 2008 14:09:42 +0000 Received: from paulius.zaleckas by 82-135-208-232.static.zebra.lt with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 12 Jun 2008 14:09:42 +0000 To: video4linux-list@redhat.com From: Paulius Zaleckas Date: Thu, 12 Jun 2008 17:09:12 +0300 Message-ID: <48512E08.6020608@teltonika.lt> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: g.liakhovetski@pengutronix.de Subject: SoC camera crashes when host is not module List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: I am writing driver for i.MX CSI interface... And while I was loading my driver with insmod everything was OK, but when I compiled it into the kernel it crashed. I believe that it is a bug in the soc_camera. Seems like device_register is being used without kref initialization. [42949374.020000] WARNING: at lib/kref.c:43 kref_get+0x48/0x50() [42949374.020000] Modules linked in: [42949374.030000] [] (dump_stack+0x0/0x14) from [] (warn_on_slowpath+0x4c/0x68) [42949374.040000] [] (warn_on_slowpath+0x0/0x68) from [] (kref_get+0x48/0x50) [42949374.050000] r6:c01ce6dc r5:c01ce55c r4:c01ce6e0 [42949374.050000] [] (kref_get+0x0/0x50) from [] (kobject_get+0x18/0x20) [42949374.060000] r4:c01ce6dc [42949374.060000] [] (kobject_get+0x0/0x20) from [] (kobject_add_internal+0x64/0x1f8) [42949374.070000] r4:c01ce55c [42949374.070000] [] (kobject_add_internal+0x0/0x1f8) from [] (kobject_add_varg+0x44/0x54) [42949374.080000] r8:c01ce4f4 r7:00000000 r6:c01ce6dc r5:c01ce55c r4:00000000 [42949374.090000] [] (kobject_add_varg+0x0/0x54) from [] (kobject_add+0x40/0x68) [42949374.100000] r6:c01ce580 r5:c01c8aec r4:c01ce4f4 [42949374.110000] [] (kobject_add+0x0/0x68) from [] (device_add+0x7c/0x4f4) [42949374.110000] r3:c01ce580 r2:c019f4dc [42949374.120000] [] (device_add+0x0/0x4f4) from [] (device_register+0x1c/0x20) [42949374.130000] [] (device_register+0x0/0x20) from [] (soc_camera_host_register+0xc0/0x19c) [42949374.140000] r4:c01ce4ec [42949374.140000] [] (soc_camera_host_register+0x0/0x19c) from [] (imx_camera_probe+0x260/0x380) [42949374.150000] r8:00000006 r7:00000000 r6:c01c8778 r5:c01c8aec r4:c3c96cfc [42949374.160000] [] (imx_camera_probe+0x0/0x380) from [] (platform_drv_probe+0x20/0x24) [42949374.170000] [] (platform_drv_probe+0x0/0x24) from [] (driver_probe_device+0xb0/0x1b4) [42949374.180000] [] (driver_probe_device+0x0/0x1b4) from [] (__driver_attach+0x68/0x6c) [42949374.190000] r8:c01cdea4 r7:c00e4b30 r6:c01ce4b0 r5:c01c8828 r4:c01c8780 [42949374.200000] [] (__driver_attach+0x0/0x6c) from [] (bus_for_each_dev+0x5c/0x88) [42949374.200000] r6:c01ce4b0 r5:c3c0ded0 r4:00000000 [42949374.210000] [] (bus_for_each_dev+0x0/0x88) from [] (driver_attach+0x20/0x28) [42949374.220000] r7:c0011874 r6:c01ce4b0 r5:c01ce4b0 r4:c3c96be8 [42949374.230000] [] (driver_attach+0x0/0x28) from [] (bus_add_driver+0xa8/0x1dc) [42949374.230000] [] (bus_add_driver+0x0/0x1dc) from [] (driver_register+0x54/0x130) [42949374.240000] [] (driver_register+0x0/0x130) from [] (platform_driver_register+0x6c/0x88) [42949374.250000] r8:c3c0c000 r7:c0011874 r6:00000000 r5:00000000 r4:c0016404 [42949374.260000] [] (platform_driver_register+0x0/0x88) from [] (imx_camera_init+0x14/0x1c) [42949374.270000] [] (imx_camera_init+0x0/0x1c) from [] (kernel_init+0x78/0x290) [42949374.280000] [] (kernel_init+0x0/0x290) from [] (do_exit+0x0/0x614) [42949374.290000] ---[ end trace 362b35ef15250fa4 ]--- [42949374.290000] kobject: 'camera_host0' (c01ce55c): kobject_add_internal: parent: '', set: 'devices' [42949374.300000] Unable to handle kernel NULL pointer dereference at virtual address 00000020 [42949374.310000] pgd = c0004000 [42949374.320000] [00000020] *pgd=00000000 [42949374.320000] Internal error: Oops: 5 [#1] [42949374.320000] Modules linked in: [42949374.320000] CPU: 0 Tainted: G W (2.6.26-rc4 #24) [42949374.320000] PC is at sysfs_addrm_start+0x34/0x9c [42949374.320000] LR is at sysfs_addrm_start+0x28/0x9c [42949374.320000] pc : [] lr : [] psr: 60000013 [42949374.320000] sp : c3c0dcd8 ip : c3c0dcd8 fp : c3c0dcec [42949374.320000] r10: c01c8780 r9 : c01ce55c r8 : c3c0dd24 [42949374.320000] r7 : 00000000 r6 : c01ce55c r5 : c3c0dcf0 r4 : 00000000 [42949374.320000] r3 : 00000000 r2 : c01d4220 r1 : ffffffd0 r0 : c3c03004 [42949374.320000] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [42949374.320000] Control: 0000317f Table: 08004000 DAC: 00000017 [42949374.320000] Process swapper (pid: 1, stack limit = 0xc3c0c260) [42949374.320000] Stack: (0xc3c0dcd8 to 0xc3c0e000) [42949374.320000] dcc0: c3c0dcf0 c3c96d94 [42949374.320000] dce0: c3c0dd20 c3c0dcf0 c00a5580 c00a4fd8 00000000 00000000 00000000 00000000 [42949374.320000] dd00: c01ce55c c01ce55c c01ce6dc 00000000 c01ce6dc c3c0dd38 c3c0dd24 c00a561c [42949374.320000] dd20: c00a5544 c00c49cc c01ce55c c3c0dd64 c3c0dd3c c00c49e0 c00a55f4 00000000 [42949374.320000] dd40: c3c07394 00000000 c01ce55c c01ce6dc 00000000 c01ce4f4 c3c0dd80 c3c0dd68 [42949374.320000] dd60: c00c4b94 c00c48fc c01ce4f4 c01c8aec c01ce580 c3c0dd94 c3c0dd84 c00c4eac [42949374.320000] dd80: c00c4b60 c3c0dd9c c3c0ddd0 c3c0dda0 c00e292c c00c4e80 c019f4dc c01ce580 [42949374.320000] dda0: c01c8780 c3c0ddd0 c01ce4f4 c01c8aec c01c8778 00000000 c01ce4f4 c4850000 [42949374.320000] ddc0: c01c8780 c3c0dde4 c3c0ddd4 c00e2dc0 c00e28c0 c01ce4ec c3c0de08 c3c0dde8 [42949374.320000] dde0: c00f74f0 c00e2db4 c3c96cfc c01c8aec c01c8778 00000000 00000006 c3c0de7c [42949374.320000] de00: c3c0de0c c0014054 c00f7440 c00c79e4 c3c0de44 c3c96ccc c3c0de40 c3c0de28 [42949374.320000] de20: c3c0de44 00000000 c3c96ccc c3c23418 e000928c c4850000 c4850008 c00a5fbc [42949374.320000] de40: c00a5254 c3c23418 00000000 00000000 00000001 c01c8780 c01ce4b0 c01ce4b0 [42949374.320000] de60: c00e4b30 c01d6350 00000000 00000000 c3c0de8c c3c0de80 c00e573c c0013e04 [42949374.320000] de80: c3c0deb0 c3c0de90 c00e4a2c c00e572c c01c8780 c01c8828 c01ce4b0 c00e4b30 [42949374.320000] dea0: c01cdea4 c3c0decc c3c0deb4 c00e4b98 c00e498c 00000000 c3c0ded0 c01ce4b0 [42949374.320000] dec0: c3c0def8 c3c0ded0 c00e4124 c00e4b40 c3c07818 c3c07818 c01c87c8 c3c96be8 [42949374.320000] dee0: c01ce4b0 c01ce4b0 c0011874 c3c0df08 c3c0defc c00e488c c00e40d8 c3c0df34 [42949374.320000] df00: c3c0df0c c00e4568 c00e487c c01a179c c0016404 c01ce4b0 00000000 c0011874 [42949374.320000] df20: c3c0c000 c0015168 c3c0df58 c3c0df38 c00e4d34 c00e44d0 c0016404 00000000 [42949374.320000] df40: 00000000 c0011874 c3c0c000 c3c0df68 c3c0df5c c00e59c4 c00e4cf0 c3c0df78 [42949374.320000] df60: c3c0df6c c0011888 c00e5968 c3c0dff4 c3c0df7c c00087ac c0011884 bee40f34 [42949374.320000] df80: c3c0dfa4 c3c0c000 00000000 c3c0df00 c3c0df9c c002af78 c002ac3c 00000000 [42949374.320000] dfa0: 00000000 c3c0dfb0 c0018aa4 c002af68 00000000 00000000 c0008734 c0030dfc [42949374.320000] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [42949374.320000] dfe0: 00000000 00000000 00000000 c3c0dff8 c0030dfc c0008744 00000000 02000000 [42949374.320000] Backtrace: [42949374.320000] [] (sysfs_addrm_start+0x0/0x9c) from [] (create_dir+0x4c/0xb0) [42949374.320000] r5:c3c96d94 r4:c3c0dcf0 [42949374.320000] [] (create_dir+0x0/0xb0) from [] (sysfs_create_dir+0x38/0x4c) [42949374.320000] r8:c01ce6dc r7:00000000 r6:c01ce6dc r5:c01ce55c r4:c01ce55c [42949374.320000] [] (sysfs_create_dir+0x0/0x4c) from [] (kobject_add_internal+0xf4/0x1f8) [42949374.320000] r4:c01ce55c [42949374.320000] [] (kobject_add_internal+0x0/0x1f8) from [] (kobject_add_varg+0x44/0x54) [42949374.320000] r8:c01ce4f4 r7:00000000 r6:c01ce6dc r5:c01ce55c r4:00000000 [42949374.320000] [] (kobject_add_varg+0x0/0x54) from [] (kobject_add+0x40/0x68) [42949374.320000] r6:c01ce580 r5:c01c8aec r4:c01ce4f4 [42949374.320000] [] (kobject_add+0x0/0x68) from [] (device_add+0x7c/0x4f4) [42949374.320000] r3:c01ce580 r2:c019f4dc [42949374.320000] [] (device_add+0x0/0x4f4) from [] (device_register+0x1c/0x20) [42949374.320000] [] (device_register+0x0/0x20) from [] (soc_camera_host_register+0xc0/0x19c) [42949374.320000] r4:c01ce4ec [42949374.320000] [] (soc_camera_host_register+0x0/0x19c) from [] (imx_camera_probe+0x260/0x380) [42949374.320000] r8:00000006 r7:00000000 r6:c01c8778 r5:c01c8aec r4:c3c96cfc [42949374.320000] [] (imx_camera_probe+0x0/0x380) from [] (platform_drv_probe+0x20/0x24) [42949374.320000] [] (platform_drv_probe+0x0/0x24) from [] (driver_probe_device+0xb0/0x1b4) [42949374.320000] [] (driver_probe_device+0x0/0x1b4) from [] (__driver_attach+0x68/0x6c) [42949374.320000] r8:c01cdea4 r7:c00e4b30 r6:c01ce4b0 r5:c01c8828 r4:c01c8780 [42949374.320000] [] (__driver_attach+0x0/0x6c) from [] (bus_for_each_dev+0x5c/0x88) [42949374.320000] r6:c01ce4b0 r5:c3c0ded0 r4:00000000 [42949374.320000] [] (bus_for_each_dev+0x0/0x88) from [] (driver_attach+0x20/0x28) [42949374.320000] r7:c0011874 r6:c01ce4b0 r5:c01ce4b0 r4:c3c96be8 [42949374.320000] [] (driver_attach+0x0/0x28) from [] (bus_add_driver+0xa8/0x1dc) [42949374.320000] [] (bus_add_driver+0x0/0x1dc) from [] (driver_register+0x54/0x130) [42949374.320000] [] (driver_register+0x0/0x130) from [] (platform_driver_register+0x6c/0x88) [42949374.320000] r8:c3c0c000 r7:c0011874 r6:00000000 r5:00000000 r4:c0016404 [42949374.320000] [] (platform_driver_register+0x0/0x88) from [] (imx_camera_init+0x14/0x1c) [42949374.320000] [] (imx_camera_init+0x0/0x1c) from [] (kernel_init+0x78/0x290) [42949374.320000] [] (kernel_init+0x0/0x290) from [] (do_exit+0x0/0x614) [42949374.320000] Code: eb030471 e59f2064 e1a03004 e5920000 (e5941020) -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list