From: James Bottomley Date: Wed, 26 Aug 2009 12:34:12 +0000 (+0930) Subject: module: workaround duplicate section names X-Git-Tag: v2.6.31-rc8~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1b364bf438cf337a3818aee77d68c0713f3e1fc4;p=profile%2Fivi%2Fkernel-x86-ivi.git module: workaround duplicate section names The root cause is a duplicate section name (.text); is this legal? [ Amerigo Wang: "AFAIK, yes." ] However, there's a problem with commit 6d76013381ed28979cd122eb4b249a88b5e384fa in that if you fail to allocate a mod->sect_attrs (in this case it's null because of the duplication), it still gets used without checking in add_notes_attrs() This should fix it [ This patch leaves other problems, particularly the sections directory, but recent parisc toolchains seem to produce these modules and this prevents a crash and is a minimal change -- RR ] Signed-off-by: James Bottomley Signed-off-by: Rusty Russell Tested-by: Helge Deller Signed-off-by: Linus Torvalds --- diff --git a/kernel/module.c b/kernel/module.c index 07c80e68a6c..eccb561dd8a 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2355,7 +2355,8 @@ static noinline struct module *load_module(void __user *umod, if (err < 0) goto unlink; add_sect_attrs(mod, hdr->e_shnum, secstrings, sechdrs); - add_notes_attrs(mod, hdr->e_shnum, secstrings, sechdrs); + if (mod->sect_attrs) + add_notes_attrs(mod, hdr->e_shnum, secstrings, sechdrs); /* Get rid of temporary copy */ vfree(hdr);