diff options
Diffstat (limited to 'drivers/misc/lkdtm.c')
| -rw-r--r-- | drivers/misc/lkdtm.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c index a2edb2e..49c7a23 100644 --- a/drivers/misc/lkdtm.c +++ b/drivers/misc/lkdtm.c @@ -224,7 +224,7 @@ static int jp_scsi_dispatch_cmd(struct scsi_cmnd *cmd) } #ifdef CONFIG_IDE -int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file, +static int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, unsigned int cmd, unsigned long arg) { @@ -334,9 +334,10 @@ static void execute_location(void *dst) static void execute_user_location(void *dst) { + /* Intentionally crossing kernel/user memory boundary. */ void (*func)(void) = dst; - if (copy_to_user(dst, do_nothing, EXEC_SIZE)) + if (copy_to_user((void __user *)dst, do_nothing, EXEC_SIZE)) return; func(); } @@ -408,6 +409,8 @@ static void lkdtm_do_action(enum ctype which) case CT_SPINLOCKUP: /* Must be called twice to trigger. */ spin_lock(&lock_me_up); + /* Let sparse know we intended to exit holding the lock. */ + __release(&lock_me_up); break; case CT_HUNG_TASK: set_current_state(TASK_UNINTERRUPTIBLE); |