From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>, Sasha Levin <sashal@kernel.org>,
linux-nvme@lists.infradead.org,
Keith Busch <keith.busch@intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH AUTOSEL 4.19 08/37] nvme-pci: fix conflicting p2p resource adds
Date: Fri, 25 Oct 2019 09:55:32 -0400 [thread overview]
Message-ID: <20191025135603.25093-8-sashal@kernel.org> (raw)
In-Reply-To: <20191025135603.25093-1-sashal@kernel.org>
From: Keith Busch <keith.busch@intel.com>
[ Upstream commit 9fe5c59ff6a1e5e26a39b75489a1420e7eaaf0b1 ]
The nvme pci driver had been adding its CMB resource to the P2P DMA
subsystem everytime on on a controller reset. This results in the
following warning:
------------[ cut here ]------------
nvme 0000:00:03.0: Conflicting mapping in same section
WARNING: CPU: 7 PID: 81 at kernel/memremap.c:155 devm_memremap_pages+0xa6/0x380
...
Call Trace:
pci_p2pdma_add_resource+0x153/0x370
nvme_reset_work+0x28c/0x17b1 [nvme]
? add_timer+0x107/0x1e0
? dequeue_entity+0x81/0x660
? dequeue_entity+0x3b0/0x660
? pick_next_task_fair+0xaf/0x610
? __switch_to+0xbc/0x410
process_one_work+0x1cf/0x350
worker_thread+0x215/0x3d0
? process_one_work+0x350/0x350
kthread+0x107/0x120
? kthread_park+0x80/0x80
ret_from_fork+0x1f/0x30
---[ end trace f7ea76ac6ee72727 ]---
nvme nvme0: failed to register the CMB
This patch fixes this by registering the CMB with P2P only once.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/nvme/host/pci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index a64a8bca0d5b9..33c40333a5280 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1652,6 +1652,9 @@ static void nvme_map_cmb(struct nvme_dev *dev)
struct pci_dev *pdev = to_pci_dev(dev->dev);
int bar;
+ if (dev->cmb_size)
+ return;
+
dev->cmbsz = readl(dev->bar + NVME_REG_CMBSZ);
if (!dev->cmbsz)
return;
@@ -2136,7 +2139,6 @@ static void nvme_pci_disable(struct nvme_dev *dev)
{
struct pci_dev *pdev = to_pci_dev(dev->dev);
- nvme_release_cmb(dev);
pci_free_irq_vectors(pdev);
if (pci_is_enabled(pdev)) {
@@ -2596,6 +2598,7 @@ static void nvme_remove(struct pci_dev *pdev)
nvme_stop_ctrl(&dev->ctrl);
nvme_remove_namespaces(&dev->ctrl);
nvme_dev_disable(dev, true);
+ nvme_release_cmb(dev);
nvme_free_host_mem(dev);
nvme_dev_remove_admin(dev);
nvme_free_queues(dev, 0);
--
2.20.1
_______________________________________________
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Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Keith Busch <keith.busch@intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Sasha Levin <sashal@kernel.org>,
linux-nvme@lists.infradead.org
Subject: [PATCH AUTOSEL 4.19 08/37] nvme-pci: fix conflicting p2p resource adds
Date: Fri, 25 Oct 2019 09:55:32 -0400 [thread overview]
Message-ID: <20191025135603.25093-8-sashal@kernel.org> (raw)
In-Reply-To: <20191025135603.25093-1-sashal@kernel.org>
From: Keith Busch <keith.busch@intel.com>
[ Upstream commit 9fe5c59ff6a1e5e26a39b75489a1420e7eaaf0b1 ]
The nvme pci driver had been adding its CMB resource to the P2P DMA
subsystem everytime on on a controller reset. This results in the
following warning:
------------[ cut here ]------------
nvme 0000:00:03.0: Conflicting mapping in same section
WARNING: CPU: 7 PID: 81 at kernel/memremap.c:155 devm_memremap_pages+0xa6/0x380
...
Call Trace:
pci_p2pdma_add_resource+0x153/0x370
nvme_reset_work+0x28c/0x17b1 [nvme]
? add_timer+0x107/0x1e0
? dequeue_entity+0x81/0x660
? dequeue_entity+0x3b0/0x660
? pick_next_task_fair+0xaf/0x610
? __switch_to+0xbc/0x410
process_one_work+0x1cf/0x350
worker_thread+0x215/0x3d0
? process_one_work+0x350/0x350
kthread+0x107/0x120
? kthread_park+0x80/0x80
ret_from_fork+0x1f/0x30
---[ end trace f7ea76ac6ee72727 ]---
nvme nvme0: failed to register the CMB
This patch fixes this by registering the CMB with P2P only once.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/nvme/host/pci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index a64a8bca0d5b9..33c40333a5280 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1652,6 +1652,9 @@ static void nvme_map_cmb(struct nvme_dev *dev)
struct pci_dev *pdev = to_pci_dev(dev->dev);
int bar;
+ if (dev->cmb_size)
+ return;
+
dev->cmbsz = readl(dev->bar + NVME_REG_CMBSZ);
if (!dev->cmbsz)
return;
@@ -2136,7 +2139,6 @@ static void nvme_pci_disable(struct nvme_dev *dev)
{
struct pci_dev *pdev = to_pci_dev(dev->dev);
- nvme_release_cmb(dev);
pci_free_irq_vectors(pdev);
if (pci_is_enabled(pdev)) {
@@ -2596,6 +2598,7 @@ static void nvme_remove(struct pci_dev *pdev)
nvme_stop_ctrl(&dev->ctrl);
nvme_remove_namespaces(&dev->ctrl);
nvme_dev_disable(dev, true);
+ nvme_release_cmb(dev);
nvme_free_host_mem(dev);
nvme_dev_remove_admin(dev);
nvme_free_queues(dev, 0);
--
2.20.1
next prev parent reply other threads:[~2019-10-25 13:56 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 13:55 [PATCH AUTOSEL 4.19 01/37] PCI/ASPM: Do not initialize link state when aspm_disabled is set Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 02/37] HID: i2c-hid: Add Odys Winbook 13 to descriptor override Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 03/37] ACPI: video: Use vendor backlight on Sony VPCEH3U1E Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 04/37] rseq/selftests: x86: Work-around bogus gcc-8 optimisation Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [f2fs-dev] [PATCH AUTOSEL 4.19 05/37] f2fs: fix to do sanity check on valid node/block count Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 06/37] ALSA: hda: Fix race between creating and refreshing sysfs entries Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 07/37] Fixed https://bugzilla.kernel.org/show_bug.cgi?id=202935 allow write on the same file Sasha Levin
2019-10-25 13:55 ` Sasha Levin [this message]
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 08/37] nvme-pci: fix conflicting p2p resource adds Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 09/37] scsi: qedf: Do not retry ELS request if qedf_alloc_cmd fails Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 10/37] driver core: platform: Fix the usage of platform device name(pdev->name) Sasha Levin
2019-10-26 7:44 ` Greg Kroah-Hartman
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 11/37] KVM: PPC: Book3S HV: Fix lockdep warning when entering the guest Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` Sasha Levin
[not found] ` <20191025135603.25093-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 12/37] drm/amdgpu/display: Fix reload driver error Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 13/37] powerpc/pseries/hvconsole: Fix stack overread via udbg Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 14/37] scsi: RDMA/srp: Fix a sleep-in-invalid-context bug Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 15/37] scsi: bnx2fc: Only put reference to io_req in bnx2fc_abts_cleanup if cleanup times out Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 16/37] xfrm interface: fix memory leak on creation Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 17/37] drm/msm: stop abusing dma_map/unmap for cache Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 18/37] drm/msm: Use the correct dma_sync calls in msm_gem Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 19/37] net: ipv6: fix listify ip6_rcv_finish in case of forwarding Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 20/37] sch_netem: fix rcu splat in netem_enqueue() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 21/37] rxrpc: Fix call ref leak Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 22/37] rxrpc: Fix trace-after-put looking at the put peer record Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 23/37] rxrpc: rxrpc_peer needs to hold a ref on the rxrpc_local record Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 24/37] llc: fix sk_buff leak in llc_sap_state_process() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 25/37] llc: fix sk_buff leak in llc_conn_service() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 26/37] NFC: pn533: fix use-after-free and memleaks Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 27/37] bonding: fix potential NULL deref in bond_update_slave_arr Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 28/37] net: usb: sr9800: fix uninitialized local variable Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 29/37] jbd2: flush_descriptor(): Do not decrease buffer head's ref count Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 30/37] ath9k: dynack: fix possible deadlock in ath_dynack_node_{de}init Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 31/37] Btrfs: fix hang when loading existing inode cache off disk Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 32/37] Btrfs: fix inode cache block reserve leak on failure to allocate data space Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 33/37] ubi: ubi_wl_get_peb: Increase the number of attempts while getting PEB Sasha Levin
2019-10-25 13:55 ` Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 34/37] RDMA/iwcm: Fix a lock inversion issue Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 35/37] ipv6: Handle race in addrconf_dad_work Sasha Levin
2019-10-25 13:56 ` [PATCH AUTOSEL 4.19 36/37] bdi: Do not use freezable workqueue Sasha Levin
2019-10-25 13:56 ` [PATCH AUTOSEL 4.19 37/37] ALSA: hda: Add codec on bus address table lately Sasha Levin
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