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Message-ID: <20081211092959.6410c352@hcegtvedt> Date: Thu, 11 Dec 2008 09:29:59 +0100 From: Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com> To: Alex Raimondi <mailinglist@...omico.ch> Cc: kernel@...32linux.org, linux-kernel@...r.kernel.org Subject: Re: Segfault in fbcmap.c => Compiler bug? On Thu, 11 Dec 2008 09:23:59 +0100 Alex Raimondi <mailinglist@...omico.ch> wrote: Hi Alex, > I am using latest atmel avr32 kernel (2.6.27) form > git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6.git. > I am on it's master branch. I added a few patches specific to our own > board (hammerhead). > Which toolchain are you using? If you have grabbed it from atmel.com you have to download Buildroot for AVR32 [1] and build your own toolchain. The toolchain on atmel.com is broken. > When compiling with support for atmel_lcdfb the kernel segfaults at > module probe. > > This is the segfault output: > > ********************************** > alg: No test for stdrng (krng) > io scheduler noop registered > io scheduler cfq registered (default) > atmel_lcdfb atmel_lcdfb.0: 225KiB frame buffer at 13940000 (mapped at > b3940000) Unable to handle kernel NULL pointer dereference at virtual Does indeed look like a known GCC bug. <snipp> rest of kernel dump and debugging> 1: www.atmel.no/buildroot -- Best regards, Hans-Christian Egtvedt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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