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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-11 16:06:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-11 16:06:54 -0700
commit00c3e276c54ca7e102f1b771715da76b4e86a098 (patch)
tree6563a263166bb5acf1945914e3770260dcc38d65 /kernel
parent605cd83694fa175894a1c63191f1f10c449b93a8 (diff)
parent29f6738609e40227dabcc63bfb3b84b3726a75bd (diff)
downloadlinux-linaro-stable-00c3e276c54ca7e102f1b771715da76b4e86a098.tar.gz
Merge branch 'akpm' (Andrew's patch-bomb)
Merge random patches from Andrew Morton. * Merge emailed patches from Andrew Morton <akpm@linux-foundation.org>: (32 commits) memblock: free allocated memblock_reserved_regions later mm: sparse: fix usemap allocation above node descriptor section mm: sparse: fix section usemap placement calculation xtensa: fix incorrect memset shmem: cleanup shmem_add_to_page_cache shmem: fix negative rss in memcg memory.stat tmpfs: revert SEEK_DATA and SEEK_HOLE drivers/rtc/rtc-twl.c: fix threaded IRQ to use IRQF_ONESHOT fat: fix non-atomic NFS i_pos read MAINTAINERS: add OMAP CPUfreq driver to OMAP Power Management section sgi-xp: nested calls to spin_lock_irqsave() fs: ramfs: file-nommu: add SetPageUptodate() drivers/rtc/rtc-mxc.c: fix irq enabled interrupts warning mm/memory_hotplug.c: release memory resources if hotadd_new_pgdat() fails h8300/uaccess: add mising __clear_user() h8300/uaccess: remove assignment to __gu_val in unhandled case of get_user() h8300/time: add missing #include <asm/irq_regs.h> h8300/signal: fix typo "statis" h8300/pgtable: add missing #include <asm-generic/pgtable.h> drivers/rtc/rtc-ab8500.c: ensure correct probing of the AB8500 RTC when Device Tree is enabled ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sys.c16
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);