* Re: [PATCH] kernel: Expose SYS_kcmp by default
[not found] <20210205163752.11932-1-chris@chris-wilson.co.uk>
@ 2021-02-05 19:25 ` kernel test robot
2021-02-05 19:46 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-02-05 19:25 UTC (permalink / raw)
To: Chris Wilson, linux-kernel
Cc: kbuild-all, clang-built-linux, Will Drewry, Kees Cook, intel-gfx,
dri-devel, Andy Lutomirski, Andrew Morton,
Linux Memory Management List, Chris Wilson
[-- Attachment #1: Type: text/plain, Size: 11511 bytes --]
Hi Chris,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linux/master]
[also build test ERROR on kees/for-next/seccomp kees/for-next/pstore linus/master v5.11-rc6 next-20210125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Chris-Wilson/kernel-Expose-SYS_kcmp-by-default/20210206-004006
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ab38c17aac10bf55ab3efde4c4db3893d8691d2
config: powerpc-randconfig-r023-20210205 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://github.com/0day-ci/linux/commit/f7694e48ae81aac5a226e74421dbda1dcdc3ca92
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Chris-Wilson/kernel-Expose-SYS_kcmp-by-default/20210206-004006
git checkout f7694e48ae81aac5a226e74421dbda1dcdc3ca92
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:190:1: note: expanded from here
__do_insw
^
arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw'
#define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from kernel/kcmp.c:3:
In file included from include/linux/syscalls.h:84:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:192:1: note: expanded from here
__do_insl
^
arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl'
#define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from kernel/kcmp.c:3:
In file included from include/linux/syscalls.h:84:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:194:1: note: expanded from here
__do_outsb
^
arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb'
#define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from kernel/kcmp.c:3:
In file included from include/linux/syscalls.h:84:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:196:1: note: expanded from here
__do_outsw
^
arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw'
#define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from kernel/kcmp.c:3:
In file included from include/linux/syscalls.h:84:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:9:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:198:1: note: expanded from here
__do_outsl
^
arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl'
#define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
>> kernel/kcmp.c:117:13: error: implicit declaration of function 'get_epoll_tfile_raw_ptr' [-Werror,-Wimplicit-function-declaration]
filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
^
kernel/kcmp.c:117:13: note: did you mean 'get_file_raw_ptr'?
kernel/kcmp.c:62:1: note: 'get_file_raw_ptr' declared here
get_file_raw_ptr(struct task_struct *task, unsigned int idx)
^
>> kernel/kcmp.c:117:11: warning: incompatible integer to pointer conversion assigning to 'struct file *' from 'int' [-Wint-conversion]
filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 warnings and 1 error generated.
vim +/get_epoll_tfile_raw_ptr +117 kernel/kcmp.c
d97b46a64674a2 Cyrill Gorcunov 2012-05-31 96
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 97 #ifdef CONFIG_EPOLL
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 98 static int kcmp_epoll_target(struct task_struct *task1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 99 struct task_struct *task2,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 100 unsigned long idx1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 101 struct kcmp_epoll_slot __user *uslot)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 102 {
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 103 struct file *filp, *filp_epoll, *filp_tgt;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 104 struct kcmp_epoll_slot slot;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 105
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 106 if (copy_from_user(&slot, uslot, sizeof(slot)))
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 107 return -EFAULT;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 108
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 109 filp = get_file_raw_ptr(task1, idx1);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 110 if (!filp)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 111 return -EBADF;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 112
f43c283a89a7dc Eric W. Biederman 2020-11-20 113 filp_epoll = fget_task(task2, slot.efd);
f43c283a89a7dc Eric W. Biederman 2020-11-20 114 if (!filp_epoll)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 115 return -EBADF;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 116
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 @117 filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 118 fput(filp_epoll);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 119
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 120 if (IS_ERR(filp_tgt))
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 121 return PTR_ERR(filp_tgt);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 122
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 123 return kcmp_ptr(filp, filp_tgt, KCMP_FILE);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 124 }
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 125 #else
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 126 static int kcmp_epoll_target(struct task_struct *task1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 127 struct task_struct *task2,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 128 unsigned long idx1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 129 struct kcmp_epoll_slot __user *uslot)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 130 {
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 131 return -EOPNOTSUPP;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 132 }
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 133 #endif
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 134
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] kernel: Expose SYS_kcmp by default
[not found] <20210205163752.11932-1-chris@chris-wilson.co.uk>
2021-02-05 19:25 ` [PATCH] kernel: Expose SYS_kcmp by default kernel test robot
@ 2021-02-05 19:46 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-02-05 19:46 UTC (permalink / raw)
To: Chris Wilson, linux-kernel
Cc: kbuild-all, Will Drewry, Kees Cook, intel-gfx, dri-devel,
Andy Lutomirski, Andrew Morton, Linux Memory Management List,
Chris Wilson
[-- Attachment #1: Type: text/plain, Size: 5069 bytes --]
Hi Chris,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linux/master]
[also build test ERROR on kees/for-next/seccomp kees/for-next/pstore linus/master v5.11-rc6 next-20210125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Chris-Wilson/kernel-Expose-SYS_kcmp-by-default/20210206-004006
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ab38c17aac10bf55ab3efde4c4db3893d8691d2
config: i386-randconfig-s002-20210205 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-215-g0fb77bb6-dirty
# https://github.com/0day-ci/linux/commit/f7694e48ae81aac5a226e74421dbda1dcdc3ca92
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Chris-Wilson/kernel-Expose-SYS_kcmp-by-default/20210206-004006
git checkout f7694e48ae81aac5a226e74421dbda1dcdc3ca92
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
kernel/kcmp.c: In function 'kcmp_epoll_target':
>> kernel/kcmp.c:117:13: error: implicit declaration of function 'get_epoll_tfile_raw_ptr'; did you mean 'get_file_raw_ptr'? [-Werror=implicit-function-declaration]
117 | filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
| ^~~~~~~~~~~~~~~~~~~~~~~
| get_file_raw_ptr
>> kernel/kcmp.c:117:11: warning: assignment to 'struct file *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
117 | filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
| ^
cc1: some warnings being treated as errors
vim +117 kernel/kcmp.c
d97b46a64674a2 Cyrill Gorcunov 2012-05-31 96
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 97 #ifdef CONFIG_EPOLL
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 98 static int kcmp_epoll_target(struct task_struct *task1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 99 struct task_struct *task2,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 100 unsigned long idx1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 101 struct kcmp_epoll_slot __user *uslot)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 102 {
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 103 struct file *filp, *filp_epoll, *filp_tgt;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 104 struct kcmp_epoll_slot slot;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 105
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 106 if (copy_from_user(&slot, uslot, sizeof(slot)))
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 107 return -EFAULT;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 108
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 109 filp = get_file_raw_ptr(task1, idx1);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 110 if (!filp)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 111 return -EBADF;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 112
f43c283a89a7dc Eric W. Biederman 2020-11-20 113 filp_epoll = fget_task(task2, slot.efd);
f43c283a89a7dc Eric W. Biederman 2020-11-20 114 if (!filp_epoll)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 115 return -EBADF;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 116
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 @117 filp_tgt = get_epoll_tfile_raw_ptr(filp_epoll, slot.tfd, slot.toff);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 118 fput(filp_epoll);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 119
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 120 if (IS_ERR(filp_tgt))
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 121 return PTR_ERR(filp_tgt);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 122
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 123 return kcmp_ptr(filp, filp_tgt, KCMP_FILE);
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 124 }
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 125 #else
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 126 static int kcmp_epoll_target(struct task_struct *task1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 127 struct task_struct *task2,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 128 unsigned long idx1,
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 129 struct kcmp_epoll_slot __user *uslot)
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 130 {
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 131 return -EOPNOTSUPP;
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 132 }
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 133 #endif
0791e3644e5ef2 Cyrill Gorcunov 2017-07-12 134
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
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^ permalink raw reply [flat|nested] 2+ messages in thread