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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 23:32:42 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 23:32:42 +0400 |
| commit | 467a3ca5cab64a16b5ec46ebb1895c84c280dcfe (patch) | |
| tree | 68096d5b17e884d270420d50e466186c73019830 /kernel/sys.c | |
| parent | 40c9f61eae9098212b6906f29f30f08f7a19b5e2 (diff) | |
| parent | 84a1caf1453c3d44050bd22db958af4a7f99315c (diff) | |
| download | linux-467a3ca5cab64a16b5ec46ebb1895c84c280dcfe.tar.xz | |
Merge branch 'v3.6-rc7' into tty-next
This is to sync up on Linus's branch to get the other tty and core changes.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index e0c8ffc50d7f..2d39a84cd857 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1788,7 +1788,6 @@ SYSCALL_DEFINE1(umask, int, mask) #ifdef CONFIG_CHECKPOINT_RESTORE static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) { - struct vm_area_struct *vma; struct file *exe_file; struct dentry *dentry; int err; @@ -1816,13 +1815,17 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) down_write(&mm->mmap_sem); /* - * Forbid mm->exe_file change if there are mapped other files. + * Forbid mm->exe_file change if old file still mapped. */ err = -EBUSY; - for (vma = mm->mmap; vma; vma = vma->vm_next) { - if (vma->vm_file && !path_equal(&vma->vm_file->f_path, - &exe_file->f_path)) - goto exit_unlock; + if (mm->exe_file) { + struct vm_area_struct *vma; + + for (vma = mm->mmap; vma; vma = vma->vm_next) + if (vma->vm_file && + path_equal(&vma->vm_file->f_path, + &mm->exe_file->f_path)) + goto exit_unlock; } /* @@ -1835,6 +1838,7 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) if (test_and_set_bit(MMF_EXE_FILE_CHANGED, &mm->flags)) goto exit_unlock; + err = 0; set_mm_exe_file(mm, exe_file); exit_unlock: up_write(&mm->mmap_sem); |