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Date: Tue, 22 Oct 2013 10:25:53 +0200 From: Geert Uytterhoeven <geert@...ux-m68k.org> To: Iago Abal <mail@...oabal.eu> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Iago Abal <iari@....dk> Subject: Re: Looking for configuration-dependent bugs in Linux On Mon, Oct 21, 2013 at 12:49 PM, Iago Abal <mail@...oabal.eu> wrote: > We are currently looking for already-fixed configuration-dependent > bugs in Linux ---the bugfix helps us to understand the underlying > cause. A good example is [2], which fixes a bug that only shows up in > PA-RISC architectures when DISCONTIGMEM is enabled. Any bug appearing > in some configurations but not in others is interesting for us (e.g. a > bug affecting PowerPC only), even though the more complex the > interaction between configuration options the more interesting is the > bug for our purpose. > > As a Linux kernel developer, could you: > > * remember any configuration-dependent bug? > * identify any subset of configuration options that tend to interact badly? > * spot any part of the kernel more prone to configuration-dependent bugs? >From the top of my head and a little bit of git log: * Missing includes, due to indirect inclusion on some platforms. Typically one of: <linux/slab.h> <linux/prefetch.h> <linux/of.h> <linux/irqreturn.h> <linux/uaccess.h> <linux/err.h> * Missing/broken code/dependencies on platforms where some popular config options are not set. Typically one of: CONFIG_SMP CONFIG_PM CONFIG_PCI CONFIG_HAS_DMA Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- 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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