update submodule and patches to 7.1.0

[pve-qemu.git] / debian / patches / pve / 0057-PVE-Backup-ensure-jobs-in-di_list-are-referenced.patch

diff --git a/debian/patches/pve/0057-PVE-Backup-ensure-jobs-in-di_list-are-referenced.patch b/debian/patches/pve/0057-PVE-Backup-ensure-jobs-in-di_list-are-referenced.patch
deleted file mode 100644 (file)
index f3bfb15..0000000
--- a/debian/patches/pve/0057-PVE-Backup-ensure-jobs-in-di_list-are-referenced.patch
+++ /dev/null
@@ -1,76 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fabian Ebner <f.ebner@proxmox.com>
-Date: Wed, 25 May 2022 13:59:38 +0200
-Subject: [PATCH] PVE-Backup: ensure jobs in di_list are referenced
-
-Ensures that qmp_backup_cancel doesn't pick a job that's already been
-freed. With unlucky timings it seems possible that:
-1. job_exit -> job_completed -> job_finalize_single starts
-2. pvebackup_co_complete_stream gets spawned in completion callback
-3. job finalize_single finishes -> job's refcount hits zero -> job is
-   freed
-4. qmp_backup_cancel comes in and locks backup_state.backup_mutex
-   before pvebackup_co_complete_stream can remove the job from the
-   di_list
-5. qmp_backup_cancel will pick a job that's already been freed
-
-Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
-Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
----
- pve-backup.c | 25 ++++++++++++++++++++-----
- 1 file changed, 20 insertions(+), 5 deletions(-)
-
-diff --git a/pve-backup.c b/pve-backup.c
-index 5bed6f4014..0c34428713 100644
---- a/pve-backup.c
-+++ b/pve-backup.c
-@@ -316,6 +316,14 @@ static void coroutine_fn pvebackup_co_complete_stream(void *opaque)
-         }
-     }
- 
-+    if (di->job) {
-+        AioContext *ctx = di->job->job.aio_context;
-+        aio_context_acquire(ctx);
-+        job_unref(&di->job->job);
-+        di->job = NULL;
-+        aio_context_release(ctx);
-+    }
-+
-     // remove self from job list
-     backup_state.di_list = g_list_remove(backup_state.di_list, di);
- 
-@@ -491,9 +499,12 @@ static void create_backup_jobs_bh(void *opaque) {
-             bitmap_mode, false, NULL, &perf, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
-             JOB_DEFAULT, pvebackup_complete_cb, di, backup_state.txn, &local_err);
- 
--        aio_context_release(aio_context);
--
-         di->job = job;
-+        if (job) {
-+            job_ref(&job->job);
-+        }
-+
-+        aio_context_release(aio_context);
- 
-         if (!job || local_err) {
-             error_setg(errp, "backup_job_create failed: %s",
-@@ -521,12 +532,16 @@ static void create_backup_jobs_bh(void *opaque) {
-                 di->target = NULL;
-             }
- 
--            if (!canceled && di->job) {
-+            if (di->job) {
-                 AioContext *ctx = di->job->job.aio_context;
-                 aio_context_acquire(ctx);
--                job_cancel_sync(&di->job->job, true);
-+                if (!canceled) {
-+                    job_cancel_sync(&di->job->job, true);
-+                    canceled = true;
-+                }
-+                job_unref(&di->job->job);
-+                di->job = NULL;
-                 aio_context_release(ctx);
--                canceled = true;
-             }
-         }
-     }