summaryrefslogtreecommitdiff
path: root/ipc
diff options
context:
space:
mode:
Diffstat (limited to 'ipc')
-rw-r--r--ipc/shm.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 406c5b20819..5e2cbfdab6f 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1036,6 +1036,10 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr)
sfd->file = shp->shm_file;
sfd->vm_ops = NULL;
+ err = security_mmap_file(file, prot, flags);
+ if (err)
+ goto out_fput;
+
down_write(&current->mm->mmap_sem);
if (addr && !(shmflg & SHM_REMAP)) {
err = -EINVAL;
@@ -1050,7 +1054,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr)
goto invalid;
}
- user_addr = do_mmap (file, addr, size, prot, flags, 0);
+ user_addr = do_mmap_pgoff(file, addr, size, prot, flags, 0);
*raddr = user_addr;
err = 0;
if (IS_ERR_VALUE(user_addr))
@@ -1058,6 +1062,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr)
invalid:
up_write(&current->mm->mmap_sem);
+out_fput:
fput(file);
out_nattch: