diff options
Diffstat (limited to '0033-xen-sched-fix-race-in-RTDS-scheduler.patch')
| -rw-r--r-- | 0033-xen-sched-fix-race-in-RTDS-scheduler.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/0033-xen-sched-fix-race-in-RTDS-scheduler.patch b/0033-xen-sched-fix-race-in-RTDS-scheduler.patch deleted file mode 100644 index 93ee04b..0000000 --- a/0033-xen-sched-fix-race-in-RTDS-scheduler.patch +++ /dev/null @@ -1,42 +0,0 @@ -From 481465f35da1bcec0b2a4dfd6fc51d86cac28547 Mon Sep 17 00:00:00 2001 -From: Juergen Gross <jgross@suse.com> -Date: Mon, 31 Oct 2022 13:22:54 +0100 -Subject: [PATCH 33/87] xen/sched: fix race in RTDS scheduler - -When a domain gets paused the unit runnable state can change to "not -runnable" without the scheduling lock being involved. This means that -a specific scheduler isn't involved in this change of runnable state. - -In the RTDS scheduler this can result in an inconsistency in case a -unit is losing its "runnable" capability while the RTDS scheduler's -scheduling function is active. RTDS will remove the unit from the run -queue, but doesn't do so for the replenish queue, leading to hitting -an ASSERT() in replq_insert() later when the domain is unpaused again. - -Fix that by removing the unit from the replenish queue as well in this -case. - -Fixes: 7c7b407e7772 ("xen/sched: introduce unit_runnable_state()") -Signed-off-by: Juergen Gross <jgross@suse.com> -Acked-by: Dario Faggioli <dfaggioli@suse.com> -master commit: 73c62927f64ecb48f27d06176befdf76b879f340 -master date: 2022-10-21 12:32:23 +0200 ---- - xen/common/sched/rt.c | 1 + - 1 file changed, 1 insertion(+) - -diff --git a/xen/common/sched/rt.c b/xen/common/sched/rt.c -index c24cd2ac3200..ec2ca1bebc26 100644 ---- a/xen/common/sched/rt.c -+++ b/xen/common/sched/rt.c -@@ -1087,6 +1087,7 @@ rt_schedule(const struct scheduler *ops, struct sched_unit *currunit, - else if ( !unit_runnable_state(snext->unit) ) - { - q_remove(snext); -+ replq_remove(ops, snext); - snext = rt_unit(sched_idle_unit(sched_cpu)); - } - --- -2.37.4 - |