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D35492.diff
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diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -4273,10 +4273,16 @@
{
struct socket *so = arg;
- if (SOLISTENING(so))
- SOCK_LOCK(so);
- else
+retry:
+ if (SOLISTENING(so)) {
+ SOLISTEN_LOCK(so);
+ } else {
SOCK_RECVBUF_LOCK(so);
+ if (__predict_false(SOLISTENING(so))) {
+ SOCK_RECVBUF_UNLOCK(so);
+ goto retry;
+ }
+ }
}
static void
@@ -4285,7 +4291,7 @@
struct socket *so = arg;
if (SOLISTENING(so))
- SOCK_UNLOCK(so);
+ SOLISTEN_UNLOCK(so);
else
SOCK_RECVBUF_UNLOCK(so);
}
@@ -4297,12 +4303,12 @@
if (what == LA_LOCKED) {
if (SOLISTENING(so))
- SOCK_LOCK_ASSERT(so);
+ SOLISTEN_LOCK_ASSERT(so);
else
SOCK_RECVBUF_LOCK_ASSERT(so);
} else {
if (SOLISTENING(so))
- SOCK_UNLOCK_ASSERT(so);
+ SOLISTEN_UNLOCK_ASSERT(so);
else
SOCK_RECVBUF_UNLOCK_ASSERT(so);
}
@@ -4313,10 +4319,16 @@
{
struct socket *so = arg;
- if (SOLISTENING(so))
- SOCK_LOCK(so);
- else
+retry:
+ if (SOLISTENING(so)) {
+ SOLISTEN_LOCK(so);
+ } else {
SOCK_SENDBUF_LOCK(so);
+ if (__predict_false(SOLISTENING(so))) {
+ SOCK_SENDBUF_UNLOCK(so);
+ goto retry;
+ }
+ }
}
static void
@@ -4325,7 +4337,7 @@
struct socket *so = arg;
if (SOLISTENING(so))
- SOCK_UNLOCK(so);
+ SOLISTEN_UNLOCK(so);
else
SOCK_SENDBUF_UNLOCK(so);
}
@@ -4337,12 +4349,12 @@
if (what == LA_LOCKED) {
if (SOLISTENING(so))
- SOCK_LOCK_ASSERT(so);
+ SOLISTEN_LOCK_ASSERT(so);
else
SOCK_SENDBUF_LOCK_ASSERT(so);
} else {
if (SOLISTENING(so))
- SOCK_UNLOCK_ASSERT(so);
+ SOLISTEN_UNLOCK_ASSERT(so);
else
SOCK_SENDBUF_UNLOCK_ASSERT(so);
}
diff --git a/sys/sys/socketvar.h b/sys/sys/socketvar.h
--- a/sys/sys/socketvar.h
+++ b/sys/sys/socketvar.h
@@ -254,6 +254,11 @@
KASSERT(SOLISTENING(sol), \
("%s: %p not listening", __func__, (sol))); \
} while (0)
+#define SOLISTEN_UNLOCK_ASSERT(sol) do { \
+ mtx_assert(&(sol)->so_lock, MA_NOTOWNED); \
+ KASSERT(SOLISTENING(sol), \
+ ("%s: %p not listening", __func__, (sol))); \
+} while (0)
/*
* Socket buffer locks. These are strongly preferred over SOCKBUF_LOCK(sb)
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D35492.diff (2 KB)
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D35492: socket: Fix a race between kevent(2) and listen(2)
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