2 files changed, 15 insertions, 4 deletions

diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 54b4077fed79..a8ddadbc7459 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -1156,10 +1156,12 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
         omqstat.mq_flags = filp->f_flags & O_NONBLOCK;
         if (u_mqstat) {
                 audit_mq_getsetattr(mqdes, &mqstat);
+                spin_lock(&filp->f_lock);
                 if (mqstat.mq_flags & O_NONBLOCK)
                         filp->f_flags |= O_NONBLOCK;
                 else
                         filp->f_flags &= ~O_NONBLOCK;
+                spin_unlock(&filp->f_lock);
 
                 inode->i_atime = inode->i_ctime = CURRENT_TIME;
         }
diff --git a/ipc/shm.c b/ipc/shm.c
index a9e09ad2263e..f239d87e0d37 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -39,6 +39,7 @@
 #include <linux/nsproxy.h>
 #include <linux/mount.h>
 #include <linux/ipc_namespace.h>
+#include <linux/ima.h>
 
 #include <asm/uaccess.h>
 
@@ -340,6 +341,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
         struct file * file;
         char name[13];
         int id;
+        int acctflag = 0;
 
         if (size < SHMMIN || size > ns->shm_ctlmax)
                 return -EINVAL;
@@ -364,23 +366,25 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
 
         sprintf (name, "SYSV%08x", key);
         if (shmflg & SHM_HUGETLB) {
-                /* hugetlb_file_setup takes care of mlock user accounting */
-                file = hugetlb_file_setup(name, size);
+                /* hugetlb_file_setup applies strict accounting */
+                if (shmflg & SHM_NORESERVE)
+                        acctflag = VM_NORESERVE;
+                file = hugetlb_file_setup(name, size, acctflag);
                 shp->mlock_user = current_user();
         } else {
-                int acctflag = VM_ACCOUNT;
                 /*
                  * Do not allow no accounting for OVERCOMMIT_NEVER, even
                  * if it's asked for.
                  */
                 if  ((shmflg & SHM_NORESERVE) &&
                                 sysctl_overcommit_memory != OVERCOMMIT_NEVER)
-                        acctflag = 0;
+                        acctflag = VM_NORESERVE;
                 file = shmem_file_setup(name, size, acctflag);
         }
         error = PTR_ERR(file);
         if (IS_ERR(file))
                 goto no_file;
+        ima_shm_check(file);
 
         id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
         if (id < 0) {
@@ -565,11 +569,15 @@ static void shm_get_stat(struct ipc_namespace *ns, unsigned long *rss,
                         struct hstate *h = hstate_file(shp->shm_file);
                         *rss += pages_per_huge_page(h) * mapping->nrpages;
                 } else {
+#ifdef CONFIG_SHMEM
                         struct shmem_inode_info *info = SHMEM_I(inode);
                         spin_lock(&info->lock);
                         *rss += inode->i_mapping->nrpages;
                         *swp += info->swapped;
                         spin_unlock(&info->lock);
+#else
+                        *rss += inode->i_mapping->nrpages;
+#endif
                 }
 
                 total++;
@@ -881,6 +889,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr)
         file = alloc_file(path.mnt, path.dentry, f_mode, &shm_file_operations);
         if (!file)
                 goto out_free;
+        ima_shm_check(file);
 
         file->private_data = sfd;
         file->f_mapping = shp->shm_file->f_mapping;