rebase patches on top of Ubuntu-5.13.0-21.21

(generated with debian/scripts/import-upstream-tag)

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

patches/kernel/0001-Make-mkcompile_h-accept-an-alternate-timestamp-strin.patch

@@ -21,7 +21,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 7 insertions(+), 3 deletions(-)
 
 diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
-index 4ae735039daf..5a1abe7b4169 100755
+index a72b154de7b0..4dd111086466 100755
 --- a/scripts/mkcompile_h
 +++ b/scripts/mkcompile_h
 @@ -24,10 +24,14 @@ else

patches/kernel/0003-pci-Enable-overrides-for-missing-ACS-capabilities-4..patch

@@ -55,10 +55,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  2 files changed, 111 insertions(+)
 
 diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
-index ee85be64b680..a38a8e44422e 100644
+index 8deb4cd7b133..291885ea26dd 100644
 --- a/Documentation/admin-guide/kernel-parameters.txt
 +++ b/Documentation/admin-guide/kernel-parameters.txt
-@@ -3653,6 +3653,15 @@
+@@ -3808,6 +3808,15 @@
  				Also, it enforces the PCI Local Bus spec
  				rule that those bits should be 0 in system reset
  				events (useful for kexec/kdump cases).
@@ -75,10 +75,10 @@ index ee85be64b680..a38a8e44422e 100644
  				Safety option to keep boot IRQs enabled. This
  				should never be necessary.
 diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
-index f32e521ade1e..4f3558d0c00a 100644
+index cf71505ab0b9..7f381969e705 100644
 --- a/drivers/pci/quirks.c
 +++ b/drivers/pci/quirks.c
-@@ -192,6 +192,106 @@ static int __init pci_apply_final_quirks(void)
+@@ -193,6 +193,106 @@ static int __init pci_apply_final_quirks(void)
  }
  fs_initcall_sync(pci_apply_final_quirks);
  
@@ -185,7 +185,7 @@ index f32e521ade1e..4f3558d0c00a 100644
  /*
   * Decoding should be disabled for a PCI device during BAR sizing to avoid
   * conflict. But doing so may cause problems on host bridge and perhaps other
-@@ -4857,6 +4957,8 @@ static const struct pci_dev_acs_enabled {
+@@ -4858,6 +4958,8 @@ static const struct pci_dev_acs_enabled {
  	{ PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
  	/* APM X-Gene */
  	{ PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },

patches/kernel/0004-kvm-disable-default-dynamic-halt-polling-growth.patch

@@ -13,10 +13,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
-index 14e6c73a6031..c191c9e50735 100644
+index 1dcc66060a19..c0ca4f494a02 100644
 --- a/virt/kvm/kvm_main.c
 +++ b/virt/kvm/kvm_main.c
-@@ -77,7 +77,7 @@ module_param(halt_poll_ns, uint, 0644);
+@@ -78,7 +78,7 @@ module_param(halt_poll_ns, uint, 0644);
  EXPORT_SYMBOL_GPL(halt_poll_ns);
  
  /* Default doubles per-vcpu halt_poll_ns. */

patches/kernel/0005-net-core-downgrade-unregister_netdevice-refcount-lea.patch

@@ -10,7 +10,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/net/core/dev.c b/net/core/dev.c
-index b91b76890cbc..cb7ffc3e848b 100644
+index 04c4e236952f..3ff0e01f5cbf 100644
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
 @@ -10517,7 +10517,7 @@ static void netdev_wait_allrefs(struct net_device *dev)

patches/kernel/0006-Revert-PCI-Coalesce-host-bridge-contiguous-apertures.patch

@@ -2,6 +2,9 @@ From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Thomas Lamprecht <t.lamprecht@proxmox.com>
 Date: Mon, 27 Sep 2021 11:28:39 +0200
 Subject: [PATCH] Revert "PCI: Coalesce host bridge contiguous apertures"
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
 
 This reverts commit ab20e43b20b60f5cc8e2ea3763ffa388158469ac.
 
@@ -12,8 +15,8 @@ Link: https://lore.kernel.org/r/20210709231529.GA3270116@roeck-us.net
 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
- drivers/pci/probe.c | 52 +++++----------------------------------------
+ drivers/pci/probe.c | 50 ++++-----------------------------------------
- 1 file changed, 5 insertions(+), 47 deletions(-)
+ 1 file changed, 4 insertions(+), 46 deletions(-)
 
 diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
 index f6046a16dac1..275204646c68 100644
@@ -89,14 +92,13 @@ index f6046a16dac1..275204646c68 100644
 -
  	/* Add initial resources to the bus */
  	resource_list_for_each_entry_safe(window, n, &resources) {
--		offset = window->offset;
++		list_move_tail(&window->node, &bridge->windows);
--		res = window->res;
+ 		offset = window->offset;
+ 		res = window->res;
 -		if (!res->end)
 -			continue;
 -
- 		list_move_tail(&window->node, &bridge->windows);
+-		list_move_tail(&window->node, &bridge->windows);
-+		offset = window->offset;
-+		res = window->res;
  
  		if (res->flags & IORESOURCE_BUS)
  			pci_bus_insert_busn_res(bus, bus->number, res->end);

patches/kernel/0007-PCI-Reinstate-PCI-Coalesce-host-bridge-contiguous-ap.patch

@@ -55,7 +55,7 @@ Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  1 file changed, 27 insertions(+), 4 deletions(-)
 
 diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
-index be51670572fa..133f5d2b189d 100644
+index 275204646c68..944c35d87258 100644
 --- a/drivers/pci/probe.c
 +++ b/drivers/pci/probe.c
 @@ -877,11 +877,11 @@ static void pci_set_bus_msi_domain(struct pci_bus *bus)
@@ -73,7 +73,7 @@ index be51670572fa..133f5d2b189d 100644
  	char addr[64], *fmt;
  	const char *name;
  	int err;
-@@ -959,11 +959,34 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
+@@ -961,11 +961,34 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
  	if (nr_node_ids > 1 && pcibus_to_node(bus) == NUMA_NO_NODE)
  		dev_warn(&bus->dev, "Unknown NUMA node; performance will be reduced\n");
  

patches/kernel/0010-blk-mq-fix-kernel-panic-during-iterating-over-flush-.patch

@@ -1,75 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ming Lei <ming.lei@redhat.com>
-Date: Fri, 10 Sep 2021 14:30:15 +0200
-Subject: [PATCH] blk-mq: fix kernel panic during iterating over flush request
-
-commit c2da19ed50554ce52ecbad3655c98371fe58599f upstream.
-
-For fixing use-after-free during iterating over requests, we grabbed
-request's refcount before calling ->fn in commit 2e315dc07df0 ("blk-mq:
-grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter").
-Turns out this way may cause kernel panic when iterating over one flush
-request:
-
-1) old flush request's tag is just released, and this tag is reused by
-one new request, but ->rqs[] isn't updated yet
-
-2) the flush request can be re-used for submitting one new flush command,
-so blk_rq_init() is called at the same time
-
-3) meantime blk_mq_queue_tag_busy_iter() is called, and old flush request
-is retrieved from ->rqs[tag]; when blk_mq_put_rq_ref() is called,
-flush_rq->end_io may not be updated yet, so NULL pointer dereference
-is triggered in blk_mq_put_rq_ref().
-
-Fix the issue by calling refcount_set(&flush_rq->ref, 1) after
-flush_rq->end_io is set. So far the only other caller of blk_rq_init() is
-scsi_ioctl_reset() in which the request doesn't enter block IO stack and
-the request reference count isn't used, so the change is safe.
-
-Fixes: 2e315dc07df0 ("blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter")
-Reported-by: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
-Tested-by: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
-Signed-off-by: Ming Lei <ming.lei@redhat.com>
-Reviewed-by: Christoph Hellwig <hch@lst.de>
-Reviewed-by: John Garry <john.garry@huawei.com>
-Link: https://lore.kernel.org/r/20210811142624.618598-1-ming.lei@redhat.com
-Signed-off-by: Jens Axboe <axboe@kernel.dk>
-Cc: Yi Zhang <yi.zhang@redhat.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- block/blk-core.c  | 1 -
- block/blk-flush.c | 8 ++++++++
- 2 files changed, 8 insertions(+), 1 deletion(-)
-
-diff --git a/block/blk-core.c b/block/blk-core.c
-index 7663a9b94b80..debdf9b0bf30 100644
---- a/block/blk-core.c
-+++ b/block/blk-core.c
-@@ -121,7 +121,6 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
- 	rq->internal_tag = BLK_MQ_NO_TAG;
- 	rq->start_time_ns = ktime_get_ns();
- 	rq->part = NULL;
--	refcount_set(&rq->ref, 1);
- 	blk_crypto_rq_set_defaults(rq);
- }
- EXPORT_SYMBOL(blk_rq_init);
-diff --git a/block/blk-flush.c b/block/blk-flush.c
-index e89d007dbf6a..8b11ab3b3762 100644
---- a/block/blk-flush.c
-+++ b/block/blk-flush.c
-@@ -329,6 +329,14 @@ static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,
- 	flush_rq->rq_flags |= RQF_FLUSH_SEQ;
- 	flush_rq->rq_disk = first_rq->rq_disk;
- 	flush_rq->end_io = flush_end_io;
-+	/*
-+	 * Order WRITE ->end_io and WRITE rq->ref, and its pair is the one
-+	 * implied in refcount_inc_not_zero() called from
-+	 * blk_mq_find_and_get_req(), which orders WRITE/READ flush_rq->ref
-+	 * and READ flush_rq->end_io
-+	 */
-+	smp_wmb();
-+	refcount_set(&flush_rq->ref, 1);
- 
- 	blk_flush_queue_rq(flush_rq, false);
- }

patches/kernel/0011-blk-mq-fix-is_flush_rq.patch

@@ -1,91 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ming Lei <ming.lei@redhat.com>
-Date: Fri, 10 Sep 2021 14:30:16 +0200
-Subject: [PATCH] blk-mq: fix is_flush_rq
-
-commit a9ed27a764156929efe714033edb3e9023c5f321 upstream.
-
-is_flush_rq() is called from bt_iter()/bt_tags_iter(), and runs the
-following check:
-
-	hctx->fq->flush_rq == req
-
-but the passed hctx from bt_iter()/bt_tags_iter() may be NULL because:
-
-1) memory re-order in blk_mq_rq_ctx_init():
-
-	rq->mq_hctx = data->hctx;
-	...
-	refcount_set(&rq->ref, 1);
-
-OR
-
-2) tag re-use and ->rqs[] isn't updated with new request.
-
-Fix the issue by re-writing is_flush_rq() as:
-
-	return rq->end_io == flush_end_io;
-
-which turns out simpler to follow and immune to data race since we have
-ordered WRITE rq->end_io and refcount_set(&rq->ref, 1).
-
-Fixes: 2e315dc07df0 ("blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter")
-Cc: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
-Cc: Yufen Yu <yuyufen@huawei.com>
-Signed-off-by: Ming Lei <ming.lei@redhat.com>
-Link: https://lore.kernel.org/r/20210818010925.607383-1-ming.lei@redhat.com
-Signed-off-by: Jens Axboe <axboe@kernel.dk>
-Cc: Yi Zhang <yi.zhang@redhat.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- block/blk-flush.c | 5 +++++
- block/blk-mq.c    | 2 +-
- block/blk.h       | 6 +-----
- 3 files changed, 7 insertions(+), 6 deletions(-)
-
-diff --git a/block/blk-flush.c b/block/blk-flush.c
-index 8b11ab3b3762..705ee6c99020 100644
---- a/block/blk-flush.c
-+++ b/block/blk-flush.c
-@@ -262,6 +262,11 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error)
- 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);
- }
- 
-+bool is_flush_rq(struct request *rq)
-+{
-+	return rq->end_io == flush_end_io;
-+}
-+
- /**
-  * blk_kick_flush - consider issuing flush request
-  * @q: request_queue being kicked
-diff --git a/block/blk-mq.c b/block/blk-mq.c
-index cb619ec8aaf2..601e40204d06 100644
---- a/block/blk-mq.c
-+++ b/block/blk-mq.c
-@@ -937,7 +937,7 @@ static bool blk_mq_req_expired(struct request *rq, unsigned long *next)
- 
- void blk_mq_put_rq_ref(struct request *rq)
- {
--	if (is_flush_rq(rq, rq->mq_hctx))
-+	if (is_flush_rq(rq))
- 		rq->end_io(rq, 0);
- 	else if (refcount_dec_and_test(&rq->ref))
- 		__blk_mq_free_request(rq);
-diff --git a/block/blk.h b/block/blk.h
-index 7550364c326c..4a4ffd992790 100644
---- a/block/blk.h
-+++ b/block/blk.h
-@@ -43,11 +43,7 @@ static inline void __blk_get_queue(struct request_queue *q)
- 	kobject_get(&q->kobj);
- }
- 
--static inline bool
--is_flush_rq(struct request *req, struct blk_mq_hw_ctx *hctx)
--{
--	return hctx->fq->flush_rq == req;
--}
-+bool is_flush_rq(struct request *req);
- 
- struct blk_flush_queue *blk_alloc_flush_queue(int node, int cmd_size,
- 					      gfp_t flags);