From: Eric Biggers <ebiggers3@xxxxxxxxx>
This fixes a memleak if anon_inode_getfile() fails in userfaultfd().
Signed-off-by: Eric Biggers <ebiggers3@xxxxxxxxx>
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
fs/userfaultfd.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 634e676..f9aeb40 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1287,8 +1287,10 @@ static struct file *userfaultfd_file_create(int flags)
file = anon_inode_getfile("[userfaultfd]", &userfaultfd_fops, ctx,
O_RDWR | (flags & UFFD_SHARED_FCNTL_FLAGS));
- if (IS_ERR(file))
+ if (IS_ERR(file)) {
+ mmput(ctx->mm);
kmem_cache_free(userfaultfd_ctx_cachep, ctx);
+ }
out:
return file;
}
--
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