Re: [PATCH] gpu/drm: Use u64_to_user_pointer

From: kbuild test robot
Date: Fri Mar 18 2016 - 13:47:25 EST

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Hi Joe,

[auto build test WARNING on drm/drm-next]
[also build test WARNING on next-20160318]
[cannot apply to v4.5]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Joe-Perches/gpu-drm-Use-u64_to_user_pointer/20160319-012749
base: git://people.freedesktop.org/~airlied/linux.git drm-next
config: mips-allmodconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=mips

All warnings (new ones prefixed by >>):

In file included from include/linux/uaccess.h:5:0,
from include/linux/highmem.h:8,
from include/drm/drmP.h:40,
from drivers/gpu/drm/vc4/vc4_drv.h:9,
from drivers/gpu/drm/vc4/vc4_bo.c:21:
drivers/gpu/drm/vc4/vc4_bo.c: In function 'vc4_create_shader_bo_ioctl':
drivers/gpu/drm/vc4/vc4_bo.c:503:7: error: implicit declaration of function 'u64_to_user_ptr' [-Werror=implicit-function-declaration]
u64_to_user_ptr(args->data),
^
arch/mips/include/asm/uaccess.h:1161:15: note: in definition of macro 'copy_from_user'
__cu_from = (from); \
^
>> arch/mips/include/asm/uaccess.h:1161:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_from = (from); \
^
drivers/gpu/drm/vc4/vc4_bo.c:502:6: note: in expansion of macro 'copy_from_user'
if (copy_from_user(bo->base.vaddr,
^
cc1: some warnings being treated as errors
--
In file included from arch/mips/include/asm/module.h:6:0,
from include/linux/module.h:24,
from drivers/gpu/drm/vc4/vc4_gem.c:24:
drivers/gpu/drm/vc4/vc4_gem.c: In function 'vc4_get_hang_state_ioctl':
drivers/gpu/drm/vc4/vc4_gem.c:123:19: error: implicit declaration of function 'u64_to_user_ptr' [-Werror=implicit-function-declaration]
if (copy_to_user(u64_to_user_ptr(get_state->bo),
^
arch/mips/include/asm/uaccess.h:930:13: note: in definition of macro 'copy_to_user'
__cu_to = (to); \
^
arch/mips/include/asm/uaccess.h:930:10: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_to = (to); \
^
drivers/gpu/drm/vc4/vc4_gem.c:123:6: note: in expansion of macro 'copy_to_user'
if (copy_to_user(u64_to_user_ptr(get_state->bo),
^
drivers/gpu/drm/vc4/vc4_gem.c: In function 'vc4_cl_lookup_bos':
>> arch/mips/include/asm/uaccess.h:1161:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_from = (from); \
^
drivers/gpu/drm/vc4/vc4_gem.c:552:8: note: in expansion of macro 'copy_from_user'
ret = copy_from_user(handles,
^
drivers/gpu/drm/vc4/vc4_gem.c: In function 'vc4_get_bcl':
>> arch/mips/include/asm/uaccess.h:1161:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_from = (from); \
^
drivers/gpu/drm/vc4/vc4_gem.c:626:6: note: in expansion of macro 'copy_from_user'
if (copy_from_user(bin,
^
>> arch/mips/include/asm/uaccess.h:1161:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_from = (from); \
^
drivers/gpu/drm/vc4/vc4_gem.c:633:6: note: in expansion of macro 'copy_from_user'
if (copy_from_user(exec->shader_rec_u,
^
>> arch/mips/include/asm/uaccess.h:1161:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
__cu_from = (from); \
^
drivers/gpu/drm/vc4/vc4_gem.c:640:6: note: in expansion of macro 'copy_from_user'
if (copy_from_user(exec->uniforms_u,
^
cc1: some warnings being treated as errors

vim +1161 arch/mips/include/asm/uaccess.h

^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1145 *
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1146 * Copy data from user space to kernel space.
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1147 *
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1148 * Returns number of bytes that could not be copied.
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1149 * On success, this will be zero.
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1150 *
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1151 * If some data could not be copied, this function will pad the copied
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1152 * data to the requested size using zero bytes.
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1153 */
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1154 #define copy_from_user(to, from, n) \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1155 ({ \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1156 void *__cu_to; \
fe00f943 include/asm-mips/uaccess.h Ralf Baechle 2005-03-01 1157 const void __user *__cu_from; \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1158 long __cu_len; \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1159 \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1160 __cu_to = (to); \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 @1161 __cu_from = (from); \
^1da177e include/asm-mips/uaccess.h Linus Torvalds 2005-04-16 1162 __cu_len = (n); \
12060666 arch/mips/include/asm/uaccess.h Paul Burton 2015-05-24 1163 if (eva_kernel_access()) { \
05c65160 arch/mips/include/asm/uaccess.h Markos Chandras 2013-12-11 1164 __cu_len = __invoke_copy_from_kernel(__cu_to, \
05c65160 arch/mips/include/asm/uaccess.h Markos Chandras 2013-12-11 1165 __cu_from, \
05c65160 arch/mips/include/asm/uaccess.h Markos Chandras 2013-12-11 1166 __cu_len); \
05c65160 arch/mips/include/asm/uaccess.h Markos Chandras 2013-12-11 1167 } else { \
ef41f460 arch/mips/include/asm/uaccess.h Ralf Baechle 2009-04-28 1168 if (access_ok(VERIFY_READ, __cu_from, __cu_len)) { \
ef41f460 arch/mips/include/asm/uaccess.h Ralf Baechle 2009-04-28 1169 might_fault(); \

:::::: The code at line 1161 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>

---
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Next message: Yousof El-Sayed: "[PATCH] Staging: rtl8192e: fix line length coding style issue in rtllib_softmac.c"
Previous message: David Daney: "Re: [PATCH] Remove v850 from linux/elf-em.h"
In reply to: kbuild test robot: "Re: [PATCH] gpu/drm: Use u64_to_user_pointer"
Next in thread: Gustavo Padovan: "[PATCH v10 3/3] staging/android: refactor SYNC IOCTLs"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]