1 files changed, 7 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 331fc1b..1328251 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1200,7 +1200,11 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
 	if (err)
 		goto out_fput;
 
-	down_write(&current->mm->mmap_sem);
+	if (down_write_killable(&current->mm->mmap_sem)) {
+		err = -EINTR;
+		goto out_fput;
+	}
+
 	if (addr && !(shmflg & SHM_REMAP)) {
 		err = -EINVAL;
 		if (addr + size < addr)
@@ -1271,7 +1275,8 @@ SYSCALL_DEFINE1(shmdt, char __user *, shmaddr)
 	if (addr & ~PAGE_MASK)
 		return retval;
 
-	down_write(&mm->mmap_sem);
+	if (down_write_killable(&mm->mmap_sem))
+		return -EINTR;
 
 	/*
 	 * This function tries to be smart and unmap shm segments that