Date: Sun, 20 Jul 2003 22:54:04 -0700 From: Peter Wemm <peter@wemm.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: hackers@freebsd.org Subject: Re: Possible issue with in-kernel ELF loader. Message-ID: <20030721055404.6EEB72A7EA@canning.wemm.org> In-Reply-To: <200307180511.h6I5B5HV004858@apollo.backplane.com>
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Matthew Dillon wrote: > I got an odd bug report for DragonFly today. Apparently the module loader > was broken, the kernel complained about not being able to find > 'globaldata'. > > It turns out that the kernel's internal ELF loader is misinterpreting > an ABS symbol (i.e. set with .SET in assembly) whos value is 0 as being > 'not found', and once that is fixed it was also confusing the absolute > symbol with a COMMON symbol. Thanks for the pointer. FWIW, We use -fno-common on 5.x to avoid common symbols even existing in the first place. There were a few missing externs that this turned up. Cheers, -Peter -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com "All of this is for nothing if we don't go to the stars" - JMS/B5
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