From 546125d1614264d26080817d0c8cddb9b25081fa Mon Sep 17 00:00:00 2001 From: Scott Mayhew Date: Thu, 5 Jan 2017 16:34:51 -0500 Subject: sunrpc: don't call sleeping functions from the notifier block callbacks The inet6addr_chain is an atomic notifier chain, so we can't call anything that might sleep (like lock_sock)... instead of closing the socket from svc_age_temp_xprts_now (which is called by the notifier function), just have the rpc service threads do it instead. Cc: stable@vger.kernel.org Fixes: c3d4879e01be "sunrpc: Add a function to close..." Signed-off-by: Scott Mayhew Signed-off-by: J. Bruce Fields --- net/sunrpc/svc_xprt.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 3bc1d61694cb..9c9db55a0c1e 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -799,6 +799,8 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt) if (test_bit(XPT_CLOSE, &xprt->xpt_flags)) { dprintk("svc_recv: found XPT_CLOSE\n"); + if (test_and_clear_bit(XPT_KILL_TEMP, &xprt->xpt_flags)) + xprt->xpt_ops->xpo_kill_temp_xprt(xprt); svc_delete_xprt(xprt); /* Leave XPT_BUSY set on the dead xprt: */ goto out; @@ -1020,9 +1022,11 @@ void svc_age_temp_xprts_now(struct svc_serv *serv, struct sockaddr *server_addr) le = to_be_closed.next; list_del_init(le); xprt = list_entry(le, struct svc_xprt, xpt_list); - dprintk("svc_age_temp_xprts_now: closing %p\n", xprt); - xprt->xpt_ops->xpo_kill_temp_xprt(xprt); - svc_close_xprt(xprt); + set_bit(XPT_CLOSE, &xprt->xpt_flags); + set_bit(XPT_KILL_TEMP, &xprt->xpt_flags); + dprintk("svc_age_temp_xprts_now: queuing xprt %p for closing\n", + xprt); + svc_xprt_enqueue(xprt); } } EXPORT_SYMBOL_GPL(svc_age_temp_xprts_now); -- cgit v1.2.3