Calling complete() from within the __init function is wrong -
theoretically, the init process could proceed all the way to freeing
the init mem before the devtmpfsd thread gets to execute the return
instruction in devtmpfs_setup().
In practice, it seems to be harmless as gcc inlines devtmpfs_setup()
into devtmpfsd(). So the calls of the __init functions init_chdir()
etc. actually happen from devtmpfs_setup(), but the __ref on that one
silences modpost (it's all right, because those calls happen before
the complete()). But it does make the __init annotation of the setup
function moot, which we'll fix in a subsequent patch.
Fixes: bcbacc4909f1 ("devtmpfs: refactor devtmpfsd()")
Signed-off-by: Rasmus Villemoes
---
drivers/base/devtmpfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 653c8c6ac7a7..aedeb2dc1a18 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -419,7 +419,6 @@ static int __init devtmpfs_setup(void *p)
init_chroot(".");
out:
*(int *)p = err;
- complete(_done);
return err;
}
@@ -432,6 +431,7 @@ static int __ref devtmpfsd(void *p)
{
int err = devtmpfs_setup(p);
+ complete(_done);
if (err)
return err;
devtmpfs_work_loop();
--
2.29.2
