4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jia-Ju Bai <baijiaju1...@163.com>
[ Upstream commit 6e266610eb6553cfb7e7eb5d11914bd01509c406 ]
The driver may sleep under a spinlock.
The function call path is:
rr_close (acquire the spinlock)
free_irq --> may sleep
To fix it, free_irq is moved to the place without holding the spinlock.
This bug is found by my static analysis tool(DSAC) and checked by my code
review.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/net/hippi/rrunner.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/hippi/rrunner.c
+++ b/drivers/net/hippi/rrunner.c
@@ -1381,8 +1381,8 @@ static int rr_close(struct net_device *d
rrpriv->info_dma);
rrpriv->info = NULL;
- free_irq(pdev->irq, dev);
spin_unlock_irqrestore(&rrpriv->lock, flags);
+ free_irq(pdev->irq, dev);
return 0;
}
