Messages in this thread | | | Date | Sat, 6 Aug 2011 11:13:11 -0700 | From | Randy Dunlap <> | Subject | Re: 3.0.0-git21 -- CC fs/binfmt_misc.o .../asm/uaccess_32.h:211:26: error: call to ‘copy from user overflow’ declared with attribute error: copy_from_user() buffer size is not provably correct |
| |
On Sat, 6 Aug 2011 19:56:00 +0200 Alessandro Suardi wrote:
> On Sat, Aug 6, 2011 at 7:49 PM, Miles Lane <miles.lane@gmail.com> wrote: > > I am not finding any kernel configuration that enables me to avoid > > this compile error. Anyone know what I can do to successfully build > > this kernel? > > > > On Fri, Aug 5, 2011 at 1:15 PM, Miles Lane <miles.lane@gmail.com> wrote: > >> CC fs/binfmt_misc.o > >> In file included from /usr/src/linux-3.0/arch/x86/include/asm/uaccess.h:573:0, > >> from include/linux/uaccess.h:5, > >> from include/linux/highmem.h:7, > >> from include/linux/pagemap.h:10, > >> from fs/binfmt_misc.c:26: > >> /usr/src/linux-3.0/arch/x86/include/asm/uaccess_32.h: In function > >> ‘parse_command.part.1’: > >> /usr/src/linux-3.0/arch/x86/include/asm/uaccess_32.h:211:26: error: > >> call to ‘copy_from_user_overflow’ declared with attribute error: > >> copy_from_user() buffer size is not provably correct > > Well, uaccess_32.h has this: > > extern void copy_from_user_overflow(void) > #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS > __compiletime_error("copy_from_user() buffer size is not provably correct") > #else > __compiletime_warning("copy_from_user() buffer size is not provably correct" > ) > #endif > > and you have CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y.
Even after you disable this kconfig option, you probably also still need this patch (unless it's already applied): http://marc.info/?l=linux-kernel&m=131196593501269&w=2
--- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |