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Subject[char-misc for v5.0] mei: free read cb on ctrl_wr list flush
Date
From: Alexander Usyskin <alexander.usyskin@intel.com>

There is a little window during disconnection flow
when read cb is moved between lists and may be not freed.
Remove moving read cbs explicitly during flash fixes this memory
leak.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/client.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 1fc8ea0f519b..ca4c9cc218a2 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -401,8 +401,11 @@ static void mei_io_list_flush_cl(struct list_head *head,
struct mei_cl_cb *cb, *next;

list_for_each_entry_safe(cb, next, head, list) {
- if (cl == cb->cl)
+ if (cl == cb->cl) {
list_del_init(&cb->list);
+ if (cb->fop_type == MEI_FOP_READ)
+ mei_io_cb_free(cb);
+ }
}
}

--
2.20.1
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