Re: [syzbot] [nilfs?] possible deadlock in nilfs_segctor_construct

[Edward Adam Davis]

#syz test

diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 83970d97840b..d3076015771f 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2582,8 +2582,8 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
 {
 	struct nilfs_transaction_info ti;
 
-	nilfs_transaction_lock(sci->sc_super, &ti, 0);
 	nilfs_segctor_construct(sci, mode);
+	nilfs_transaction_lock(sci->sc_super, &ti, 0);
 
 	/*
 	 * Unclosed segment should be retried.  We do this using sc_timer.