* [PATCH net-next] devlink: use kvzalloc() to allocate devlink instance resources
@ 2024-03-22 1:58 Jian Wen
2024-03-22 8:17 ` Jiri Pirko
0 siblings, 1 reply; 2+ messages in thread
From: Jian Wen @ 2024-03-22 1:58 UTC (permalink / raw)
To: jiri, edumazet, davem; +Cc: Jian Wen, netdev, wenjianhn
During live migration of a virtual machine, the SR-IOV VF need to be
re-registered. It may fail when the memory is badly fragmented.
The related log is as follows.
Mar 1 18:54:12 kernel: hv_netvsc 6045bdaa-c0d1-6045-bdaa-c0d16045bdaa eth0: VF slot 1 added
...
Mar 1 18:54:13 kernel: kworker/0:0: page allocation failure: order:7, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
Mar 1 18:54:13 kernel: CPU: 0 PID: 24006 Comm: kworker/0:0 Tainted: G E 5.4...x86_64 #1
Mar 1 18:54:13 kernel: Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
Mar 1 18:54:13 kernel: Workqueue: events work_for_cpu_fn
Mar 1 18:54:13 kernel: Call Trace:
Mar 1 18:54:13 kernel: dump_stack+0x8b/0xc8
Mar 1 18:54:13 kernel: warn_alloc+0xff/0x170
Mar 1 18:54:13 kernel: __alloc_pages_slowpath+0x92c/0xb2b
Mar 1 18:54:13 kernel: ? get_page_from_freelist+0x1d4/0x1140
Mar 1 18:54:13 kernel: __alloc_pages_nodemask+0x2f9/0x320
Mar 1 18:54:13 kernel: alloc_pages_current+0x6a/0xb0
Mar 1 18:54:13 kernel: kmalloc_order+0x1e/0x70
Mar 1 18:54:13 kernel: kmalloc_order_trace+0x26/0xb0
Mar 1 18:54:13 kernel: ? __switch_to_asm+0x34/0x70
Mar 1 18:54:13 kernel: __kmalloc+0x276/0x280
Mar 1 18:54:13 kernel: ? _raw_spin_unlock_irqrestore+0x1e/0x40
Mar 1 18:54:13 kernel: devlink_alloc+0x29/0x110
Mar 1 18:54:13 kernel: mlx5_devlink_alloc+0x1a/0x20 [mlx5_core]
Mar 1 18:54:13 kernel: init_one+0x1d/0x650 [mlx5_core]
Mar 1 18:54:13 kernel: local_pci_probe+0x46/0x90
Mar 1 18:54:13 kernel: work_for_cpu_fn+0x1a/0x30
Mar 1 18:54:13 kernel: process_one_work+0x16d/0x390
Mar 1 18:54:13 kernel: worker_thread+0x1d3/0x3f0
Mar 1 18:54:13 kernel: kthread+0x105/0x140
Mar 1 18:54:13 kernel: ? max_active_store+0x80/0x80
Mar 1 18:54:13 kernel: ? kthread_bind+0x20/0x20
Mar 1 18:54:13 kernel: ret_from_fork+0x3a/0x50
Signed-off-by: Jian Wen <wenjian1@xiaomi.com>
---
net/devlink/core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/devlink/core.c b/net/devlink/core.c
index 7f0b093208d7..ffbac42918d7 100644
--- a/net/devlink/core.c
+++ b/net/devlink/core.c
@@ -314,7 +314,7 @@ static void devlink_release(struct work_struct *work)
mutex_destroy(&devlink->lock);
lockdep_unregister_key(&devlink->lock_key);
put_device(devlink->dev);
- kfree(devlink);
+ kvfree(devlink);
}
void devlink_put(struct devlink *devlink)
@@ -420,7 +420,7 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
if (!devlink_reload_actions_valid(ops))
return NULL;
- devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
+ devlink = kvzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
if (!devlink)
return NULL;
@@ -455,7 +455,7 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
return devlink;
err_xa_alloc:
- kfree(devlink);
+ kvfree(devlink);
return NULL;
}
EXPORT_SYMBOL_GPL(devlink_alloc_ns);
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net-next] devlink: use kvzalloc() to allocate devlink instance resources
2024-03-22 1:58 [PATCH net-next] devlink: use kvzalloc() to allocate devlink instance resources Jian Wen
@ 2024-03-22 8:17 ` Jiri Pirko
0 siblings, 0 replies; 2+ messages in thread
From: Jiri Pirko @ 2024-03-22 8:17 UTC (permalink / raw)
To: Jian Wen; +Cc: jiri, edumazet, davem, Jian Wen, netdev
Fri, Mar 22, 2024 at 02:58:14AM CET, wenjianhn@gmail.com wrote:
>During live migration of a virtual machine, the SR-IOV VF need to be
>re-registered. It may fail when the memory is badly fragmented.
>
>The related log is as follows.
>
>Mar 1 18:54:12 kernel: hv_netvsc 6045bdaa-c0d1-6045-bdaa-c0d16045bdaa eth0: VF slot 1 added
>...
>Mar 1 18:54:13 kernel: kworker/0:0: page allocation failure: order:7, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
>Mar 1 18:54:13 kernel: CPU: 0 PID: 24006 Comm: kworker/0:0 Tainted: G E 5.4...x86_64 #1
>Mar 1 18:54:13 kernel: Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
>Mar 1 18:54:13 kernel: Workqueue: events work_for_cpu_fn
>Mar 1 18:54:13 kernel: Call Trace:
>Mar 1 18:54:13 kernel: dump_stack+0x8b/0xc8
>Mar 1 18:54:13 kernel: warn_alloc+0xff/0x170
>Mar 1 18:54:13 kernel: __alloc_pages_slowpath+0x92c/0xb2b
>Mar 1 18:54:13 kernel: ? get_page_from_freelist+0x1d4/0x1140
>Mar 1 18:54:13 kernel: __alloc_pages_nodemask+0x2f9/0x320
>Mar 1 18:54:13 kernel: alloc_pages_current+0x6a/0xb0
>Mar 1 18:54:13 kernel: kmalloc_order+0x1e/0x70
>Mar 1 18:54:13 kernel: kmalloc_order_trace+0x26/0xb0
>Mar 1 18:54:13 kernel: ? __switch_to_asm+0x34/0x70
>Mar 1 18:54:13 kernel: __kmalloc+0x276/0x280
>Mar 1 18:54:13 kernel: ? _raw_spin_unlock_irqrestore+0x1e/0x40
>Mar 1 18:54:13 kernel: devlink_alloc+0x29/0x110
>Mar 1 18:54:13 kernel: mlx5_devlink_alloc+0x1a/0x20 [mlx5_core]
>Mar 1 18:54:13 kernel: init_one+0x1d/0x650 [mlx5_core]
>Mar 1 18:54:13 kernel: local_pci_probe+0x46/0x90
>Mar 1 18:54:13 kernel: work_for_cpu_fn+0x1a/0x30
>Mar 1 18:54:13 kernel: process_one_work+0x16d/0x390
>Mar 1 18:54:13 kernel: worker_thread+0x1d3/0x3f0
>Mar 1 18:54:13 kernel: kthread+0x105/0x140
>Mar 1 18:54:13 kernel: ? max_active_store+0x80/0x80
>Mar 1 18:54:13 kernel: ? kthread_bind+0x20/0x20
>Mar 1 18:54:13 kernel: ret_from_fork+0x3a/0x50
>
>Signed-off-by: Jian Wen <wenjian1@xiaomi.com>
net-next is closed, resent next week once it opens.
pw-bot: defer
>---
> net/devlink/core.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
>diff --git a/net/devlink/core.c b/net/devlink/core.c
>index 7f0b093208d7..ffbac42918d7 100644
>--- a/net/devlink/core.c
>+++ b/net/devlink/core.c
>@@ -314,7 +314,7 @@ static void devlink_release(struct work_struct *work)
> mutex_destroy(&devlink->lock);
> lockdep_unregister_key(&devlink->lock_key);
> put_device(devlink->dev);
>- kfree(devlink);
>+ kvfree(devlink);
> }
>
> void devlink_put(struct devlink *devlink)
>@@ -420,7 +420,7 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
> if (!devlink_reload_actions_valid(ops))
> return NULL;
>
>- devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
>+ devlink = kvzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
> if (!devlink)
> return NULL;
>
>@@ -455,7 +455,7 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
> return devlink;
>
> err_xa_alloc:
>- kfree(devlink);
>+ kvfree(devlink);
> return NULL;
> }
> EXPORT_SYMBOL_GPL(devlink_alloc_ns);
>--
>2.34.1
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2024-03-22 8:17 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
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2024-03-22 1:58 [PATCH net-next] devlink: use kvzalloc() to allocate devlink instance resources Jian Wen
2024-03-22 8:17 ` Jiri Pirko
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