---
25-akpm/ipc/shm.c | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)
diff -puN ipc/shm.c~shm-do_munmap-check ipc/shm.c
--- 25/ipc/shm.c~shm-do_munmap-check 2004-03-17 11:29:44.940378768 -0800
+++ 25-akpm/ipc/shm.c 2004-03-17 11:29:44.942378464 -0800
@@ -794,10 +794,12 @@ asmlinkage long sys_shmdt(char __user *s
*/
if ((vma->vm_ops == &shm_vm_ops || is_vm_hugetlb_page(vma)) &&
(vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) {
-
+ int ret;
size = vma->vm_file->f_dentry->d_inode->i_size;
- do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);
+ ret = do_munmap(mm, vma->vm_start,
+ vma->vm_end - vma->vm_start);
+ WARN_ON(ret);
/*
* We discovered the size of the shm segment, so
* break out of here and fall through to the next
@@ -821,9 +823,13 @@ asmlinkage long sys_shmdt(char __user *s
/* finding a matching vma now does not alter retval */
if ((vma->vm_ops == &shm_vm_ops || is_vm_hugetlb_page(vma)) &&
- (vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff)
+ (vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) {
+ int ret;
- do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);
+ ret = do_munmap(mm, vma->vm_start,
+ vma->vm_end - vma->vm_start);
+ WARN_ON(ret);
+ }
vma = next;
}
_