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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-30 17:11:23 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-06-01 10:37:01 -0400
commit8b3ec6814c83d76b85bd13badc48552836c24839 (patch)
tree2430a4511c7ea41f67b0d841f4c42eac43828db3 /ipc
parente5467859f7f79b69fc49004403009dfdba3bec53 (diff)
downloadvexpress-lsk-8b3ec6814c83d76b85bd13badc48552836c24839.tar.gz
take security_mmap_file() outside of ->mmap_sem
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/shm.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 406c5b20819..e3a8063b176 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;
@@ -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: