xavi/android_kernel_m2note/drivers/md/md.c, branch mm-6.0

md: flush ->event_work before stopping array.

2016-08-26T18:44:53+00:00

commit ee5d004fd0591536a061451eba2b187092e9127c upstream. The 'event_work' worker used by dm-raid may still be running when the array is stopped. This can result in an oops. So flush the workqueue on which it is run after detaching and before destroying the device. Reported-by: Heinz Mauelshagen Signed-off-by: NeilBrown Fixes: 9d09e663d550 ("dm: raid456 basic support") Signed-off-by: Greg Kroah-Hartman Signed-off-by: Stefan Guendhoer

md: use kzalloc() when bitmap is disabled

2016-08-26T17:59:42+00:00

commit b6878d9e03043695dbf3fa1caa6dfc09db225b16 upstream. In drivers/md/md.c get_bitmap_file() uses kmalloc() for creating a mdu_bitmap_file_t called "file". 5769 file = kmalloc(sizeof(*file), GFP_NOIO); 5770 if (!file) 5771 return -ENOMEM; This structure is copied to user space at the end of the function. 5786 if (err == 0 && 5787 copy_to_user(arg, file, sizeof(*file))) 5788 err = -EFAULT But if bitmap is disabled only the first byte of "file" is initialized with zero, so it's possible to read some bytes (up to 4095) of kernel space memory from user space. This is an information leak. 5775 /* bitmap disabled, zero the first byte and copy out */ 5776 if (!mddev->bitmap_info.file) 5777 file->pathname[0] = '\0'; Signed-off-by: Benjamin Randazzo Signed-off-by: NeilBrown Signed-off-by: Greg Kroah-Hartman Signed-off-by: Stefan Guendhoer

md: fix a build warning

2016-08-26T17:30:26+00:00

commit 4e023612325a9034a542bfab79f78b1fe5ebb841 upstream. Warning like this: drivers/md/md.c: In function "update_array_info": drivers/md/md.c:6394:26: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] !mddev->persistent != info->not_persistent|| Fix it as Neil Brown said: mddev->persistent != !info->not_persistent || Signed-off-by: Firo Yang Signed-off-by: NeilBrown Signed-off-by: Greg Kroah-Hartman Signed-off-by: Stefan Guendhoer

first commit

2016-08-15T02:19:42+00:00