Messages in this thread | | | Date | Mon, 08 Aug 2011 11:43:43 -0700 | From | Ben Greear <> | Subject | 3.0.1 compile error on Fedora 15 |
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[greearb@t60-ben linux-3.0.p4s]$ make make -C /home/greearb/git/linux-3.0.dev.y O=/home/greearb/kernel/2.6/linux-3.0.p4s/. Using /home/greearb/git/linux-3.0.dev.y as source for kernel GEN /home/greearb/kernel/2.6/linux-3.0.p4s/Makefile CHK include/linux/version.h CHK include/generated/utsrelease.h CALL /home/greearb/git/linux-3.0.dev.y/scripts/checksyscalls.sh CHK include/generated/compile.h CC fs/binfmt_misc.o In file included from /home/greearb/git/linux-3.0.dev.y/arch/x86/include/asm/uaccess.h:570:0, from /home/greearb/git/linux-3.0.dev.y/include/linux/uaccess.h:5, from /home/greearb/git/linux-3.0.dev.y/include/linux/highmem.h:7, from /home/greearb/git/linux-3.0.dev.y/include/linux/pagemap.h:10, from /home/greearb/git/linux-3.0.dev.y/fs/binfmt_misc.c:26: /home/greearb/git/linux-3.0.dev.y/arch/x86/include/asm/uaccess_32.h: In function ‘parse_command.part.0’: /home/greearb/git/linux-3.0.dev.y/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 make[3]: *** [fs/binfmt_misc.o] Error 1 make[2]: *** [fs] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 [greearb@t60-ben linux-3.0.p4s]$
The code in question is below. Is this missing an assignment to n in the else branch?
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { int sz = __compiletime_object_size(to);
if (likely(sz == -1 || sz >= n)) n = _copy_from_user(to, from, n); else copy_from_user_overflow();
return n; }
-- Ben Greear <greearb@candelatech.com> Candela Technologies Inc http://www.candelatech.com -- 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/
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