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On Sat, 9 Sep 2006 11:04:49 +0200 thunder7@xs4all.nl wrote: > From: Andrew Morton <akpm@osdl.org> > Date: Fri, Sep 08, 2006 at 12:44:11PM -0700 > > On Fri, 8 Sep 2006 21:30:41 +0200 > > thunder7@xs4all.nl wrote: > > > > > From: Andrew Morton <akpm@osdl.org> > > > Date: Fri, Sep 08, 2006 at 01:13:17AM -0700 > > > > > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc6/2.6.18-rc6-mm1/ > > > > > > > This throws an oops on my IBM Thinkpad T23 notebook. Some parts scroll > > > off the screen, but the visible stack trace goes like this: > > > > > We'd really need to see that trace, please. netconsole is worth setting > > up, if you have another machine on the LAN. > > > Well, I've learned that built-in framebuffers initialize _before_ the > network stack is up, so that didn't help. Rebuilding savagefb as a > module gave me: > > hub 3-0:1.0: 2 ports detected > savagefb: mapped io at f8980000 > savagefb: probed videoram: 16384k > savagefb: Detected current MCLK value of 71591 kHz > savagefb: 1024x768 TFT LCD panel detected and active > savagefb: Limiting video mode to 1024x768 > savagefb: mapped framebuffer at f8a80000, pbase == e8000000 > BUG: unable to handle kernel NULL pointer dereference at virtual address > 00000000 > printing eip: > f8831013 > *pde = 00000000 > Oops: 0000 [#1] > 4K_STACKS PREEMPT > last sysfs file: /devices/system/cpu/cpu0/cpufreq/scaling_governor > Modules linked in: savagefb fb_ddc cfbimgblt uhci_hcd usbcore > CPU: 0 > EIP: 0060:[<f8831013>] Not tainted VLI > EFLAGS: 00010286 (2.6.18-rc6-mm1 #6) > EIP is at fb_ddc_read+0x13/0x1c4 [fb_ddc] > eax: f7faf250 ebx: 00000000 ecx: f7faf244 edx: f7faf244 > esi: 00000000 edi: f7faf008 ebp: f7fbed98 esp: f7fbed68 > ds: 007b es: 007b ss: 0068 > Process modprobe (pid: 1776, ti=f7fbe000 task=f7fbdab0 > task.ti=f7fbe000) > Stack: 00000001 f7faf244 00004988 01000000 f7faf000 f9a6d9e0 f7fbede8 00000000 > f7faf244 f7faf208 f7faf000 f7faf008 f7fbedb0 f8846af9 f7faf250 f7faf208 > f7faf000 f7faf008 f7fbede8 f884667c f7faf000 f7faf6b0 f7fbedd0 c01ebe91 > Call Trace: > [<c01039eb>] show_trace_log_lvl+0x15/0x28 > [<c0103a8a>] show_stack_log_lvl+0x8c/0x97 > [<c0103e48>] show_registers+0x188/0x21c > [<c0104085>] die+0x1a9/0x283 > [<c0113bb5>] do_page_fault+0x3ed/0x4bf > [<c03421df>] error_code+0x3f/0x44 > [<f8846af9>] savagefb_probe_i2c_connector+0x18/0x66 [savagefb] > [<f884667c>] savagefb_probe+0x484/0x672 [savagefb] > [<c01f6722>] pci_device_probe+0x3a/0x61 > [<c0269ecb>] really_probe+0x37/0xb0 > [<c0269fbc>] driver_probe_device+0x78/0x84 > [<c026a06a>] __driver_attach+0x38/0x60 > [<c026992a>] bus_for_each_dev+0x42/0x69 > [<c0269df7>] driver_attach+0x16/0x18 > [<c0269491>] bus_add_driver+0x66/0x179 > [<c026a2f7>] driver_register+0x77/0x7c > [<c01f68bf>] __pci_register_driver+0x5e/0x7e > [<f882d02e>] savagefb_init+0x2e/0x36 [savagefb] > [<c0132158>] sys_init_module+0x1274/0x1443 > [<c0102dd8>] syscall_call+0x7/0xb > ======================= > Code: <ff> 33 ff 53 08 6a 00 ff 33 ff 53 08 c7 45 d4 00 00 00 00 83 c4 10 6a 00 31 ff ff 33 ff 53 04 6a > EIP: [<f8831013>] fb_ddc_read+0x13/0x1c4 [fb_ddc] SS:ESP 0068:f7fbed68 > > Hope this helps, Does, thanks. I guess adapter->algo_data is NULL. savagefb-use-generic-ddc-reading.patch, perhaps... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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