From: Eric Van Hensbergen Date: Thu, 7 Feb 2008 01:25:05 +0000 (-0600) Subject: 9p: fix mmap to be read-only X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=14b8869ff4f00f105ea76678997b4d49d27baae3;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 9p: fix mmap to be read-only v9fs was allowing writable mmap which could lead to kernel BUG() cases. This sets the mmap function to generic_file_readonly_mmap which (correctly) returns an error to applications which open mmap for writing. Signed-off-by: Eric Van Hensbergen --- diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index ba4b1caa9c43..a616fff8906d 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -184,7 +184,7 @@ static const struct file_operations v9fs_cached_file_operations = { .open = v9fs_file_open, .release = v9fs_dir_release, .lock = v9fs_file_lock, - .mmap = generic_file_mmap, + .mmap = generic_file_readonly_mmap, }; const struct file_operations v9fs_file_operations = { @@ -194,5 +194,5 @@ const struct file_operations v9fs_file_operations = { .open = v9fs_file_open, .release = v9fs_dir_release, .lock = v9fs_file_lock, - .mmap = generic_file_mmap, + .mmap = generic_file_readonly_mmap, };