From 496b318eb65558c1a3a4fe882cb9da6d1dc6493a Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Fri, 13 May 2011 09:45:40 -0400 Subject: [PATCH] xen/blkback: fix xenbus_transaction_start() hang caused by double xenbus_transaction_end() vbd_resize() up_read()'s xs_state.suspend_mutex twice in a row via double xenbus_transaction_end() calls. The next down_read() in xenbus_transaction_start() (at eg. the next resize attempt) hangs. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=618317 Acked-by: Jan Beulich Acked-by: Ian Campbell Signed-off-by: Laszlo Ersek Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 9dee545..dba55e3 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -226,6 +226,7 @@ again: goto again; if (err) pr_warn(DRV_PFX "Error ending transaction"); + return; abort: xenbus_transaction_end(xbt, 1); } -- 2.7.4