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authorJia-Ju Bai <baijiaju1990@163.com>2017-12-12 11:49:52 +0300
committerDavid S. Miller <davem@davemloft.net>2017-12-13 22:52:57 +0300
commit6e266610eb6553cfb7e7eb5d11914bd01509c406 (patch)
tree63f92663cda1108f32af035052ddd56c8f3c847b /drivers/net/hippi
parentd6da83813fb39206c73cfb98798cc3c770e5b0a0 (diff)
downloadlinux-6e266610eb6553cfb7e7eb5d11914bd01509c406.tar.xz
hippi: Fix a Fix a possible sleep-in-atomic bug in rr_close
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 <baijiaju1990@163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hippi')
-rw-r--r--drivers/net/hippi/rrunner.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c
index 8483f03d5a41..1ab97d99b9ba 100644
--- a/drivers/net/hippi/rrunner.c
+++ b/drivers/net/hippi/rrunner.c
@@ -1379,8 +1379,8 @@ static int rr_close(struct net_device *dev)
rrpriv->info_dma);
rrpriv->info = NULL;
- free_irq(pdev->irq, dev);
spin_unlock_irqrestore(&rrpriv->lock, flags);
+ free_irq(pdev->irq, dev);
return 0;
}