From 0a3f4358ac6283fe3a565183eaf9716de28b6fd0 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Tue, 6 Sep 2005 19:47:50 -0700
Subject: [PATCH] [NET]: proto_unregister: fix sleeping while atomic
proto_unregister holds a lock while calling kmem_cache_destroy, which
can sleep.
Noticed by Daniele Orlandi <daniele@orlandi.com>.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/core/sock.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index b32b1815ae5a..ac63b56e23b2 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1529,6 +1529,8 @@ EXPORT_SYMBOL(proto_register);
void proto_unregister(struct proto *prot)
{
write_lock(&proto_list_lock);
+ list_del(&prot->node);
+ write_unlock(&proto_list_lock);
if (prot->slab != NULL) {
kmem_cache_destroy(prot->slab);
@@ -1550,9 +1552,6 @@ void proto_unregister(struct proto *prot)
kfree(name);
prot->twsk_slab = NULL;
}
-
- list_del(&prot->node);
- write_unlock(&proto_list_lock);
}
EXPORT_SYMBOL(proto_unregister);
--
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