Subject: Re: [PATCH] vhost/vsock: Use kvmalloc/kvfree for larger packets.

From: [email-masked]
Date: Fri, 30 Sep 2022 01:50:14 +0000

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <[email-masked]>:

On Wed, 28 Sep 2022 15:45:38 +0900 you wrote:
> When copying a large file over sftp over vsock, data size is usually 32kB,
> and kmalloc seems to fail to try to allocate 32 32kB regions.
> 
>  Call Trace:
>   [<ffffffffb6a0df64>] dump_stack+0x97/0xdb
>   [<ffffffffb68d6aed>] warn_alloc_failed+0x10f/0x138
>   [<ffffffffb68d868a>] ? __alloc_pages_direct_compact+0x38/0xc8
>   [<ffffffffb664619f>] __alloc_pages_nodemask+0x84c/0x90d
>   [<ffffffffb6646e56>] alloc_kmem_pages+0x17/0x19
>   [<ffffffffb6653a26>] kmalloc_order_trace+0x2b/0xdb
>   [<ffffffffb66682f3>] __kmalloc+0x177/0x1f7
>   [<ffffffffb66e0d94>] ? copy_from_iter+0x8d/0x31d
>   [<ffffffffc0689ab7>] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock]
>   [<ffffffffc06828d9>] vhost_worker+0xf7/0x157 [vhost]
>   [<ffffffffb683ddce>] kthread+0xfd/0x105
>   [<ffffffffc06827e2>] ? vhost_dev_set_owner+0x22e/0x22e [vhost]
>   [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3
>   [<ffffffffb6eb332e>] ret_from_fork+0x4e/0x80
>   [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3
> 
> [...]

Here is the summary with links:
  - vhost/vsock: Use kvmalloc/kvfree for larger packets.
    https://git.kernel.org/netdev/net/c/0e3f72931fc4

You are awesome, thank you!
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