| Message ID | 1481461003-14361-3-git-send-email-ynorov@caviumnetworks.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Yury,
[auto build test ERROR on linus/master]
[also build test ERROR on v4.9-rc8 next-20161209]
[cannot apply to mmotm/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Yury-Norov/mm-move-argument-checkers-of-mmap_pgoff-to-separated-routine/20161211-211314
config: h8300-h8300h-sim_defconfig (attached as .config)
compiler: h8300-linux-gcc (GCC) 6.2.0
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=h8300
All errors (new ones prefixed by >>):
>> arch/h8300/kernel/built-in.o:(.data+0x48c): undefined reference to `sys_mmap64'
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Hi Yury,
[auto build test ERROR on linus/master]
[also build test ERROR on v4.9-rc8 next-20161209]
[cannot apply to mmotm/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Yury-Norov/mm-move-argument-checkers-of-mmap_pgoff-to-separated-routine/20161211-211314
config: c6x-evmc6457_defconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 6.2.0
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=c6x
All errors (new ones prefixed by >>):
>> arch/c6x/kernel/built-in.o:(.fardata+0xb8c): undefined reference to `sys_mmap64'
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 91a740f..869ca76 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -857,6 +857,9 @@ asmlinkage long sys_perf_event_open( asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff); +asmlinkage long sys_mmap64(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long long *offset); asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, struct file_handle __user *handle, diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index d65e232..f9ca919 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -734,9 +734,11 @@ __SYSCALL(__NR_pkey_mprotect, sys_pkey_mprotect) __SYSCALL(__NR_pkey_alloc, sys_pkey_alloc) #define __NR_pkey_free 290 __SYSCALL(__NR_pkey_free, sys_pkey_free) +#define __NR_mmap64 291 +__SYSCALL(__NR_mmap64, sys_mmap64) #undef __NR_syscalls -#define __NR_syscalls 291 +#define __NR_syscalls 292 /* * All syscalls below here should go away really, diff --git a/mm/mmap.c b/mm/mmap.c index fc1c943..6c6b95a 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1504,6 +1504,31 @@ static int mmap_pgoff_prepare(struct file **f, unsigned long *l, return 0; } +SYSCALL_DEFINE6(mmap64, unsigned long, addr, unsigned long, len, + unsigned long, prot, unsigned long, flags, + unsigned long, fd, unsigned long long __user *, offset) +{ + int err; + unsigned long long koffset; + unsigned long retval; + struct file *file = NULL; + + if (copy_from_user(&koffset, offset, sizeof(koffset))) + return -EFAULT; + if (offset_in_page(koffset)) + return -EINVAL; + + err = mmap_pgoff_prepare(&file, &len, &flags, fd); + if (err) + return err; + + retval = vm_mmap_pgoff(file, addr, len, prot, + flags, koffset >> PAGE_SHIFT); + if (file) + fput(file); + return retval; +} + SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, unsigned long, fd, unsigned long, pgoff)
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- include/linux/syscalls.h | 3 +++ include/uapi/asm-generic/unistd.h | 4 +++- mm/mmap.c | 25 +++++++++++++++++++++++++ 3 files changed, 31 insertions(+), 1 deletion(-)