Mauro, Hans, with the latest media-tree, I'm getting the following kernel oops when starting to watch digital TV with em28xx devices: [ 124.297707] BUG: unable to handle kernel paging request at 38326f3d [ 124.297770] IP: [<f8bf1026>] em28xx_tuner_callback+0x6/0x40 [em28xx] [ 124.297825] *pdpt = 0000000034dd5001 *pde = 0000000000000000 [ 124.297870] Oops: 0000 [#1] PREEMPT SMP [ 124.297904] Modules linked in: em28xx_rc zl10353 em28xx_dvb dvb_core tuner_xc2028 tvp5150 em28xx [...] [ 124.298010] Pid: 2165, comm: kdvb-ad-0-fe-0 Not tainted 3.9.0-rc5-0.1-desktop+ #11 System manufacturer System Product Name/M2N-VM DH [ 124.298010] EIP: 0060:[<f8bf1026>] EFLAGS: 00010246 CPU: 0 [ 124.298010] EIP is at em28xx_tuner_callback+0x6/0x40 [em28xx] [ 124.298010] EAX: ef33f000 EBX: 38326d65 ECX: 00000000 EDX: 00000000 [ 124.298010] ESI: ef2d2b50 EDI: ef2d2b00 EBP: ee90b998 ESP: ee90b994 [ 124.298010] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 124.298010] CR0: 8005003b CR2: 38326f3d CR3: 362a0000 CR4: 000007f0 [ 124.298010] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 124.298010] DR6: ffff0ff0 DR7: 00000400 [ 124.298010] Process kdvb-ad-0-fe-0 (pid: 2165, ti=ee90a000 task=f1074f80 task.ti=ee90a000) [ 124.298010] Stack: [ 124.298010] f8bf1020 ee90ba2c f8be1139 00000000 f71cb740 ee90b9b0 ee90b9cb 00000004 [ 124.298010] ef33f000 ee90b9d0 f8bf24e0 ee90b9cb 00000001 0033fa14 ee90ba98 ee90baa4 [ 124.298010] 00000002 00000009 12980558 ee90ba96 00000216 00000000 00000000 f5c07804 [ 124.298010] Call Trace: [ 124.298010] [<f8bf1020>] ? em28xx_i2c_unregister+0x30/0x30 [em28xx] [ 124.298010] [<f8be1139>] check_firmware+0x159/0xcf0 [tuner_xc2028] [ 124.298010] [<f8bf24e0>] ? em28xx_read_reg_req+0x20/0x30 [em28xx] [ 124.298010] [<f8be1d2c>] generic_set_freq+0x5c/0x500 [tuner_xc2028] [ 124.298010] [<c060b79d>] ? __i2c_transfer+0x4d/0x60 [ 124.298010] [<f8be2501>] xc2028_set_params+0x111/0xc10 [tuner_xc2028] [ 124.298010] [<f94e9d88>] zl10353_set_parameters+0x578/0x6c0 [zl10353] [ 124.298010] [<c026ee1d>] ? update_curr+0x12d/0x1f0 [ 124.298010] [<c0324123>] ? dma_pool_alloc+0x193/0x1e0 [ 124.298010] [<c026adcd>] ? cpuacct_charge+0x5d/0x70 [ 124.298010] [<f94a6db4>] dvb_frontend_swzigzag_autotune+0x144/0x2f0 [dvb_core] [ 124.298010] [<c05cc8d4>] ? usb_alloc_urb+0x14/0x40 [ 124.298010] [<f94a79dd>] dvb_frontend_swzigzag+0x2ad/0x310 [dvb_core] [ 124.298010] [<c026f371>] ? dequeue_entity+0x151/0x670 [ 124.298010] [<c026fd46>] ? dequeue_task_fair+0x366/0x6d0 [ 124.298010] [<c0266063>] ? update_rq_clock+0x33/0x160 [ 124.298010] [<c026c770>] ? __dequeue_entity+0x20/0x40 [ 124.298010] [<c0201bb3>] ? __switch_to+0xc3/0x380 [ 124.298010] [<c0263712>] ? finish_task_switch+0x42/0xa0 [ 124.298010] [<c073ac3c>] ? __schedule+0x34c/0x780 [ 124.298010] [<c027067c>] ? check_preempt_wakeup+0x13c/0x250 [ 124.298010] [<c0247af4>] ? lock_timer_base.isra.37+0x24/0x50 [ 124.298010] [<c02486bd>] ? try_to_del_timer_sync+0x3d/0x50 [ 124.298010] [<c0248711>] ? del_timer_sync+0x41/0x50 [ 124.298010] [<c0739299>] ? schedule_timeout+0x129/0x270 [ 124.298010] [<c02473d0>] ? usleep_range+0x40/0x40 [ 124.298010] [<c025debb>] ? down_interruptible+0x2b/0x50 [ 124.298010] [<f94a98ef>] dvb_frontend_thread+0x35f/0x6b0 [dvb_core] [ 124.298010] [<c0268e2b>] ? default_wake_function+0xb/0x10 [ 124.298010] [<c0259340>] ? finish_wait+0x60/0x60 [ 124.298010] [<f94a9590>] ? dvb_register_frontend+0x180/0x180 [dvb_core] [ 124.298010] [<c0258cef>] kthread+0x8f/0xa0 [ 124.298010] [<c0260000>] ? sys_setgroups+0x90/0x100 [ 124.298010] [<c0742377>] ret_from_kernel_thread+0x1b/0x28 [ 124.298010] [<c0258c60>] ? kthread_create_on_node+0xc0/0xc0 [ 124.298010] Code: 55 89 e5 8d 84 10 e4 01 00 00 e8 36 c0 a1 c7 31 c0 5d c3 66 90 b8 ed ff ff ff c3 90 90 90 90 90 90 90 90 90 90 55 89 e5 53 8b 18 <8b> 93 d8 01 00 00 83 fa 4c 75 1f 31 c0 85 c9 74 09 5b 5d c3 8d [ 124.298010] EIP: [<f8bf1026>] em28xx_tuner_callback+0x6/0x40 [em28xx] SS:ESP 0068:ee90b994 [ 124.298010] CR2: 0000000038326f3d [ 124.348464] ---[ end trace 2877a1eb744b8796 ]--- I don't have time to debug this further this evening+weekend, but I assume the recent i2c bus changes from Mauro and/or commit bc3d2928 (Hans fix for em28xx_tuner_callback() ) are involved. Could you please take a look at it this ? Regards, Frank -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
