* [PATCH] nvme: fix build error: nvme_mpath_update stub without static
@ 2022-03-23 23:43 Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 0/2] Fix issues with nvme_mpath_update Anton Eidelman
0 siblings, 1 reply; 9+ messages in thread
From: Anton Eidelman @ 2022-03-23 23:43 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman, kernel test robot
Fix multiple definition of nvme_mpath_update() on
builds with CONFIG_NVME_MULTIPATH disabled:
the stub function is missing "static inline".
Fixes: d50c992edf10 ("nvme-multipath: fix hang when disk goes live over reconnect")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 76f7a5f37379..8cf90c9ed667 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -853,7 +853,7 @@ static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl,
"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
return 0;
}
-void nvme_mpath_update(struct nvme_ctrl *ctrl)
+static inline void nvme_mpath_update(struct nvme_ctrl *ctrl)
{
}
static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
--
2.25.1
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 0/2] Fix issues with nvme_mpath_update
2022-03-23 23:43 [PATCH] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
@ 2022-03-24 0:30 ` Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
0 siblings, 2 replies; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:30 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman
My recent commit d50c992edf10
("nvme-multipath: fix hang when disk goes live over reconnect")
introduced two issues:
1) Build error with CONFIG_NVME_MULTIPATH=n
- missing "static inline" for the nvme_mpath_update() stub.
2) Crash when CONFIG_NVME_MULTIPATH=y but
either multipath is off or the ctrl is not ANA-enabled.
Fixing both - sorry for inconvenience.
Anton Eidelman (2):
nvme: fix build error: nvme_mpath_update stub without static
nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl
drivers/nvme/host/multipath.c | 10 ++++++----
drivers/nvme/host/nvme.h | 2 +-
2 files changed, 7 insertions(+), 5 deletions(-)
--
2.25.1
^ permalink raw reply [flat|nested] 9+ messages in thread* [PATCH v2 1/2] nvme: fix build error: nvme_mpath_update stub without static
2022-03-24 0:30 ` [PATCH v2 0/2] Fix issues with nvme_mpath_update Anton Eidelman
@ 2022-03-24 0:30 ` Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
1 sibling, 0 replies; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:30 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman, kernel test robot
Fix multiple definition of nvme_mpath_update() on
builds with CONFIG_NVME_MULTIPATH disabled:
the stub function is missing "static inline".
Fixes: d50c992edf10 ("nvme-multipath: fix hang when disk goes live over reconnect")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 76f7a5f37379..8cf90c9ed667 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -853,7 +853,7 @@ static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl,
"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
return 0;
}
-void nvme_mpath_update(struct nvme_ctrl *ctrl)
+static inline void nvme_mpath_update(struct nvme_ctrl *ctrl)
{
}
static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
--
2.25.1
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl
2022-03-24 0:30 ` [PATCH v2 0/2] Fix issues with nvme_mpath_update Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
@ 2022-03-24 0:30 ` Anton Eidelman
2022-03-24 0:38 ` [PATCH v3 0/2] Fix issues with nvme_mpath_update Anton Eidelman
1 sibling, 1 reply; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:30 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman
When CONFIG_NVME_MULTIPATH is enabled, the nvme_mpath_update()
is called from nvme_start_ctrl()
for both ANA and non-ANA ctrls and regardless of multipath on/off.
Unless multipath is on and the ctrl is ANA-enabled
the function will crash as the initializations
for ANA specific parts of the ctrl are skipped in such cases
in nvme_mpath_init_identify().
Fix: check as done in nvme_handle_aen_notice() for ana_work:
a NULL ctrl->ana_log_buf indicates ctrl does not have ANA.
Fixes: d50c992edf10 ("nvme-multipath: fix hang when disk goes live over reconnect")
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/multipath.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 12d4afde3662..f15badc0410a 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -712,11 +712,13 @@ static void nvme_ana_work(struct work_struct *work)
void nvme_mpath_update(struct nvme_ctrl *ctrl)
{
- u32 nr_change_groups = 0;
+ if (!ctrl->ana_log_buf) {
+ u32 nr_change_groups = 0;
- mutex_lock(&ctrl->ana_lock);
- nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
- mutex_unlock(&ctrl->ana_lock);
+ mutex_lock(&ctrl->ana_lock);
+ nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
+ mutex_unlock(&ctrl->ana_lock);
+ }
}
static void nvme_anatt_timeout(struct timer_list *t)
--
2.25.1
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v3 0/2] Fix issues with nvme_mpath_update
2022-03-24 0:30 ` [PATCH v2 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
@ 2022-03-24 0:38 ` Anton Eidelman
2022-03-24 0:38 ` [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
2022-03-24 0:39 ` [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
0 siblings, 2 replies; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:38 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman
My recent commit d50c992edf10
("nvme-multipath: fix hang when disk goes live over reconnect")
introduced two issues:
1) Build error with CONFIG_NVME_MULTIPATH=n
- missing "static inline" for the nvme_mpath_update() stub.
2) Crash when CONFIG_NVME_MULTIPATH=y but
either multipath is off or the ctrl is not ANA-enabled.
Fixing both - sorry for inconvenience.
Anton Eidelman (2):
nvme: fix build error: nvme_mpath_update stub without static
nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl
drivers/nvme/host/multipath.c | 10 ++++++----
drivers/nvme/host/nvme.h | 2 +-
2 files changed, 7 insertions(+), 5 deletions(-)
--
2.25.1
^ permalink raw reply [flat|nested] 9+ messages in thread* [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static
2022-03-24 0:38 ` [PATCH v3 0/2] Fix issues with nvme_mpath_update Anton Eidelman
@ 2022-03-24 0:38 ` Anton Eidelman
2022-03-24 6:03 ` Christoph Hellwig
2022-03-24 0:39 ` [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
1 sibling, 1 reply; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:38 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman, kernel test robot
Fix multiple definition of nvme_mpath_update() on
builds with CONFIG_NVME_MULTIPATH disabled:
the stub function is missing "static inline".
Fixes: d50c992edf10 ("nvme-multipath: fix hang when disk goes live over reconnect")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 76f7a5f37379..8cf90c9ed667 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -853,7 +853,7 @@ static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl,
"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
return 0;
}
-void nvme_mpath_update(struct nvme_ctrl *ctrl)
+static inline void nvme_mpath_update(struct nvme_ctrl *ctrl)
{
}
static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
--
2.25.1
^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static
2022-03-24 0:38 ` [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
@ 2022-03-24 6:03 ` Christoph Hellwig
0 siblings, 0 replies; 9+ messages in thread
From: Christoph Hellwig @ 2022-03-24 6:03 UTC (permalink / raw)
To: Anton Eidelman
Cc: linux-nvme, hch, kbusch, sagi, axboe, Anton Eidelman,
kernel test robot
On Wed, Mar 23, 2022 at 06:38:59PM -0600, Anton Eidelman wrote:
> Fix multiple definition of nvme_mpath_update() on
> builds with CONFIG_NVME_MULTIPATH disabled:
> the stub function is missing "static inline".
Please just resend a new patch. I've dropped the old one from
the nvme-5.18 branch for now.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl
2022-03-24 0:38 ` [PATCH v3 0/2] Fix issues with nvme_mpath_update Anton Eidelman
2022-03-24 0:38 ` [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
@ 2022-03-24 0:39 ` Anton Eidelman
2022-03-24 6:04 ` Christoph Hellwig
1 sibling, 1 reply; 9+ messages in thread
From: Anton Eidelman @ 2022-03-24 0:39 UTC (permalink / raw)
To: linux-nvme, hch, kbusch, sagi, axboe; +Cc: Anton Eidelman
When CONFIG_NVME_MULTIPATH is enabled, the nvme_mpath_update()
is called from nvme_start_ctrl()
for both ANA and non-ANA ctrls and regardless of multipath on/off.
Unless multipath is on and the ctrl is ANA-enabled
the function will crash as the initializations
for ANA specific parts of the ctrl are skipped in such cases
in nvme_mpath_init_identify().
Fix: check as done in nvme_handle_aen_notice() for ana_work:
a NULL ctrl->ana_log_buf indicates ctrl does not have ANA.
Fixes: d50c992edf10 ("nvme-multipath: fix hang when disk goes live over reconnect")
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/multipath.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 12d4afde3662..d36f2543ebe1 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -712,11 +712,13 @@ static void nvme_ana_work(struct work_struct *work)
void nvme_mpath_update(struct nvme_ctrl *ctrl)
{
- u32 nr_change_groups = 0;
+ if (ctrl->ana_log_buf) {
+ u32 nr_change_groups = 0;
- mutex_lock(&ctrl->ana_lock);
- nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
- mutex_unlock(&ctrl->ana_lock);
+ mutex_lock(&ctrl->ana_lock);
+ nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
+ mutex_unlock(&ctrl->ana_lock);
+ }
}
static void nvme_anatt_timeout(struct timer_list *t)
--
2.25.1
^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl
2022-03-24 0:39 ` [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
@ 2022-03-24 6:04 ` Christoph Hellwig
0 siblings, 0 replies; 9+ messages in thread
From: Christoph Hellwig @ 2022-03-24 6:04 UTC (permalink / raw)
To: Anton Eidelman; +Cc: linux-nvme, hch, kbusch, sagi, axboe, Anton Eidelman
> diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
> index 12d4afde3662..d36f2543ebe1 100644
> --- a/drivers/nvme/host/multipath.c
> +++ b/drivers/nvme/host/multipath.c
> @@ -712,11 +712,13 @@ static void nvme_ana_work(struct work_struct *work)
>
> void nvme_mpath_update(struct nvme_ctrl *ctrl)
> {
> - u32 nr_change_groups = 0;
> + if (ctrl->ana_log_buf) {
> + u32 nr_change_groups = 0;
>
> - mutex_lock(&ctrl->ana_lock);
> - nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
> - mutex_unlock(&ctrl->ana_lock);
> + mutex_lock(&ctrl->ana_lock);
> + nvme_parse_ana_log(ctrl, &nr_change_groups, nvme_update_ana_state);
Overly long line. Kust retun early for the !ana_log_buf case
to sort this out trivially.
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2022-03-24 6:04 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
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2022-03-23 23:43 [PATCH] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 0/2] Fix issues with nvme_mpath_update Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
2022-03-24 0:30 ` [PATCH v2 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
2022-03-24 0:38 ` [PATCH v3 0/2] Fix issues with nvme_mpath_update Anton Eidelman
2022-03-24 0:38 ` [PATCH v3 1/2] nvme: fix build error: nvme_mpath_update stub without static Anton Eidelman
2022-03-24 6:03 ` Christoph Hellwig
2022-03-24 0:39 ` [PATCH v3 2/2] nvme/mpath: fix crash in nvme_mpath_update for non-ana ctrl Anton Eidelman
2022-03-24 6:04 ` Christoph Hellwig
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