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Message-ID: <20150127195213.GA3151@dator> Date: Tue, 27 Jan 2015 20:52:13 +0100 From: Rabin Vincent <rabin@....in> To: Rusty Russell <rusty@...tcorp.com.au> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] module: set ksymtab/kcrctab* section addresses to 0x0 On Tue, Jan 27, 2015 at 10:20:32AM +1030, Rusty Russell wrote: > Rabin Vincent <rabin.vincent@...s.com> writes: > > These __ksymtab*/__kcrctab* sections currently have non-zero addresses. > > Non-zero section addresses in a relocatable ELF confuse GDB and it ends > > up not relocating all symbols when add-symbol-file is used on modules > > which have exports. The kernel's module loader does not care about > > these addresses, so let's just set them to zero. > > You're right, we don't use sh_addr. This should be safe, I've > applied it for the next merge window. Thanks. > AFAICT this would have always been a problem; wonder if it should be > CC:stable? I don't use gdb on modules so haven't got a good feel for > how many people this would be hurting. I've no opinion on -stable. This method of debugging kernel modules is described in for example LDD3, so it would be nice if it worked in all cases, but I guess most people won't be affected even if they use it since it only affects modules with exported symbols. -- 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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