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@intel.com 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... 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); ^~~~~~~~~~ completearch/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@ftp.linux.org.uk :::::: CC: Paul Mackerras paulus@samba.org
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