This is a note to let you know that I've just added the patch titled fs: dlm: retry accept() until -EAGAIN or error returns to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: fs-dlm-retry-accept-until-eagain-or-error-returns.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From f0f4bb431bd543ed7bebbaea3ce326cfcd5388bc Mon Sep 17 00:00:00 2001 From: Alexander Aring <aahringo@xxxxxxxxxx> Date: Thu, 27 Oct 2022 16:45:12 -0400 Subject: fs: dlm: retry accept() until -EAGAIN or error returns From: Alexander Aring <aahringo@xxxxxxxxxx> commit f0f4bb431bd543ed7bebbaea3ce326cfcd5388bc upstream. This patch fixes a race if we get two times an socket data ready event while the listen connection worker is queued. Currently it will be served only once but we need to do it (in this case twice) until we hit -EAGAIN which tells us there is no pending accept going on. This patch wraps an do while loop until we receive a return value which is different than 0 as it was done before commit d11ccd451b65 ("fs: dlm: listen socket out of connection hash"). Cc: stable@xxxxxxxxxxxxxxx Fixes: d11ccd451b65 ("fs: dlm: listen socket out of connection hash") Signed-off-by: Alexander Aring <aahringo@xxxxxxxxxx> Signed-off-by: David Teigland <teigland@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/dlm/lowcomms.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1543,7 +1543,11 @@ static void process_recv_sockets(struct static void process_listen_recv_socket(struct work_struct *work) { - accept_from_sock(&listen_con); + int ret; + + do { + ret = accept_from_sock(&listen_con); + } while (!ret); } static void dlm_connect(struct connection *con) Patches currently in stable-queue which might be from aahringo@xxxxxxxxxx are queue-6.0/fs-dlm-retry-accept-until-eagain-or-error-returns.patch queue-6.0/fs-dlm-fix-sock-release-if-listen-fails.patch