This is again a tricky include file ordering when linux/compat.h is included instead of asm/compat.h. is_compat_task() is unconditionally defined in linux/compat.h as a macro which conflicts with inline function define in asm/compat.h for this arch. As before, I will do the simple thing here and leave the asm/compat.h to keep this series simple. I will submit follow up patches to eliminate direct inclusion asm/compat.h. I will include this also in the update. -Deepa On Tue, Mar 13, 2018 at 8:30 AM, kbuild test robot <lkp@xxxxxxxxx> wrote: > Hi Deepa, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on ] > > url: https://github.com/0day-ci/linux/commits/Deepa-Dinamani/posix_clocks-Prepare-syscalls-for-64-bit-time_t-conversion/20180313-203305 > base: > config: powerpc-iss476-smp_defconfig (attached as .config) > compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=powerpc > > All errors (new ones prefixed by >>): > > arch/powerpc/oprofile/backtrace.c: In function 'user_getsp32': >>> arch/powerpc/oprofile/backtrace.c:31:19: error: implicit declaration of function 'compat_ptr'; did you mean 'complete'? [-Werror=implicit-function-declaration] > void __user *p = compat_ptr(sp); > ^~~~~~~~~~ > complete >>> arch/powerpc/oprofile/backtrace.c:31:19: error: initialization makes pointer from integer without a cast [-Werror=int-conversion] > cc1: all warnings being treated as errors > > vim +31 arch/powerpc/oprofile/backtrace.c > > 6c6bd754 Brian Rogan 2006-03-27 27 > 6c6bd754 Brian Rogan 2006-03-27 28 static unsigned int user_getsp32(unsigned int sp, int is_first) > 6c6bd754 Brian Rogan 2006-03-27 29 { > 6c6bd754 Brian Rogan 2006-03-27 30 unsigned int stack_frame[2]; > 62034f03 Al Viro 2006-09-23 @31 void __user *p = compat_ptr(sp); > 6c6bd754 Brian Rogan 2006-03-27 32 > 62034f03 Al Viro 2006-09-23 33 if (!access_ok(VERIFY_READ, p, sizeof(stack_frame))) > 6c6bd754 Brian Rogan 2006-03-27 34 return 0; > 6c6bd754 Brian Rogan 2006-03-27 35 > 6c6bd754 Brian Rogan 2006-03-27 36 /* > 6c6bd754 Brian Rogan 2006-03-27 37 * The most likely reason for this is that we returned -EFAULT, > 6c6bd754 Brian Rogan 2006-03-27 38 * which means that we've done all that we can do from > 6c6bd754 Brian Rogan 2006-03-27 39 * interrupt context. > 6c6bd754 Brian Rogan 2006-03-27 40 */ > 62034f03 Al Viro 2006-09-23 41 if (__copy_from_user_inatomic(stack_frame, p, sizeof(stack_frame))) > 6c6bd754 Brian Rogan 2006-03-27 42 return 0; > 6c6bd754 Brian Rogan 2006-03-27 43 > 6c6bd754 Brian Rogan 2006-03-27 44 if (!is_first) > 6c6bd754 Brian Rogan 2006-03-27 45 oprofile_add_trace(STACK_LR32(stack_frame)); > 6c6bd754 Brian Rogan 2006-03-27 46 > 6c6bd754 Brian Rogan 2006-03-27 47 /* > 6c6bd754 Brian Rogan 2006-03-27 48 * We do not enforce increasing stack addresses here because > 6c6bd754 Brian Rogan 2006-03-27 49 * we may transition to a different stack, eg a signal handler. > 6c6bd754 Brian Rogan 2006-03-27 50 */ > 6c6bd754 Brian Rogan 2006-03-27 51 return STACK_SP(stack_frame); > 6c6bd754 Brian Rogan 2006-03-27 52 } > 6c6bd754 Brian Rogan 2006-03-27 53 > > :::::: The code at line 31 was first introduced by commit > :::::: 62034f03380a64c0144b6721f4a2aa55d65346c1 [POWERPC] powerpc oprofile __user annotations > > :::::: TO: Al Viro <viro@xxxxxxxxxxxxxxxx> > :::::: CC: Paul Mackerras <paulus@xxxxxxxxx> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
