[PATCH] fs: initialize resize_wait wait queue of init task

[Daeho Jeong <daeho.jeong@xxxxxxxxxxx>]

We don't initialize resize_wait of init task now and all the kernel
threads share this uninitialized resize_wait wait queue because they
are sharing the file table of init task. Therefore, when expanding
this file table shared by the kernel threads, we encounter kernel panic
by accessing the NULL resize_wait wait queue.

Signed-off-by: Daeho Jeong <daeho.jeong@xxxxxxxxxxx>
Tested-by: Youngjin Gil <youngjin.gil@xxxxxxxxxxx>
---
 fs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/file.c b/fs/file.c
index ad6f094f2eff..74748c32e07a 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -475,6 +475,7 @@ struct files_struct init_files = {
 		.full_fds_bits	= init_files.full_fds_bits_init,
 	},
 	.file_lock	= __SPIN_LOCK_UNLOCKED(init_files.file_lock),
+	.resize_wait	= __WAIT_QUEUE_HEAD_INITIALIZER(init_files.resize_wait),
 };
 
 static unsigned int find_next_fd(struct fdtable *fdt, unsigned int start)
-- 
2.11.0