From 7c7d90f2dda6daec5a6aaf8f97aacc10ee4deb77 Mon Sep 17 00:00:00 2001 From: Eric Van Hensbergen Date: Wed, 6 Feb 2008 19:25:07 -0600 Subject: [PATCH] 9p: Fix soft lockup in virtio transport This fixes a poorly placed spinlock which could result in a soft lockup condition. Signed-off-by: Eric Van Hensbergen --- net/9p/trans_virtio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 0f59022794..7853c31bd6 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -232,7 +232,6 @@ p9_virtio_rpc(struct p9_trans *t, struct p9_fcall *tc, struct p9_fcall **rc, rdata = (char *)*rc+sizeof(struct p9_fcall); - spin_lock_irqsave(&chan->lock, flags); n = P9_NOTAG; if (tc->id != P9_TVERSION) { n = p9_idpool_get(chan->tagpool); @@ -240,6 +239,7 @@ p9_virtio_rpc(struct p9_trans *t, struct p9_fcall *tc, struct p9_fcall **rc, return -ENOMEM; } + spin_lock_irqsave(&chan->lock, flags); req = p9_lookup_tag(chan, n); spin_unlock_irqrestore(&chan->lock, flags); -- 2.39.5