diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2013-08-13 16:00:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-08-13 17:57:48 -0700 |
| commit | dfa9771a7c4784bafd0673bc7abcee3813088b77 (patch) | |
| tree | 130ab88dc03c5bc007949e6f98fe39edfccb81f7 /include | |
| parent | 41bb3476b361ef38576cf9d539b19bae2ac93167 (diff) | |
| download | linux-dfa9771a7c4784bafd0673bc7abcee3813088b77.tar.bz2 | |
microblaze: fix clone syscall
Fix inadvertent breakage in the clone syscall ABI for Microblaze that
was introduced in commit f3268edbe6fe ("microblaze: switch to generic
fork/vfork/clone").
The Microblaze syscall ABI for clone takes the parent tid address in the
4th argument; the third argument slot is used for the stack size. The
incorrectly-used CLONE_BACKWARDS type assigned parent tid to the 3rd
slot.
This commit restores the original ABI so that existing userspace libc
code will work correctly.
All kernel versions from v3.8-rc1 were affected.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/syscalls.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 4147d700a293..84662ecc7b51 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -802,9 +802,14 @@ asmlinkage long sys_vfork(void); asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, int, int __user *); #else +#ifdef CONFIG_CLONE_BACKWARDS3 +asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, + int __user *, int); +#else asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, int __user *, int); #endif +#endif asmlinkage long sys_execve(const char __user *filename, const char __user *const __user *argv, |