The commit is pushed to "branch-rh7-3.10.0-327.36.1.vz7.18.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git after rh7-3.10.0-327.36.1.vz7.18.3 ------> commit 6626da2a1f42e5c5abeb258904fd1db494df4629 Author: Andrey Ryabinin <aryabi...@virtuozzo.com> Date: Mon Oct 3 14:56:10 2016 +0000
ms/coredump: fix unfreezable coredumping task It could be not possible to freeze coredumping task when it waits for 'core_state->startup' completion, because threads are frozen in get_signal() before they got a chance to complete 'core_state->startup'. Use freezer_do_not_count() to tell freezer to ignore coredumping task while it waits for core_state->startup completion. https://jira.sw.ru/browse/PSBM-52793 Link: http://lkml.kernel.org/r/1475225434-3753-1-git-send-email-aryabi...@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com> Cc: sta...@vger.kernel.org Acked-by: Oleg Nesterov <o...@redhat.com> Acked-by: Pavel Machek <pa...@ucw.cz> Reviewed-by: Dmitry Safonov <dsafo...@virtuozzo.com> --- fs/coredump.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/coredump.c b/fs/coredump.c index e3fdee2..f6a1012 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -1,6 +1,7 @@ #include <linux/slab.h> #include <linux/file.h> #include <linux/fdtable.h> +#include <linux/freezer.h> #include <linux/mm.h> #include <linux/stat.h> #include <linux/fcntl.h> @@ -388,7 +389,9 @@ static int coredump_wait(int exit_code, struct core_state *core_state) if (core_waiters > 0) { struct core_thread *ptr; + freezer_do_not_count(); wait_for_completion(&core_state->startup); + freezer_count(); /* * Wait for all the threads to become inactive, so that * all the thread context (extended register state, like _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel