linux-kernel - Re: [PATCH] bpf: fix order of args in call to bpf_map

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Date: Wed, 12 Jun 2024 08:20:42 +0300
From: Péter Ujfalusi <peter.ujfalusi@...el.com>
To: <patchwork-bot+netdevbpf@...nel.org>, Mohammad Shehar Yaar Tausif
	<sheharyaar48@...il.com>
CC: <martin.lau@...ux.dev>, <ast@...nel.org>, <daniel@...earbox.net>,
	<andrii@...nel.org>, <eddyz87@...il.com>, <song@...nel.org>,
	<yonghong.song@...ux.dev>, <john.fastabend@...il.com>, <kpsingh@...nel.org>,
	<sdf@...gle.com>, <haoluo@...gle.com>, <jolsa@...nel.org>,
	<bpf@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<stable@...r.kernel.org>
Subject: Re: [PATCH] bpf: fix order of args in call to bpf_map_kvcalloc

Hi,

On 17/05/2024 06:10, patchwork-bot+netdevbpf@...nel.org wrote:
> Hello:
> 
> This patch was applied to bpf/bpf-next.git (master)

Can you send this patch for the current 6.10 cycle as a fix as well?

HEAD:
2ef5971ff345 Merge tag 'vfs-6.10-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

head -n 6 Makefile 
# SPDX-License-Identifier: GPL-2.0
VERSION = 6
PATCHLEVEL = 10
SUBLEVEL = 0
EXTRAVERSION = -rc3
NAME = Baby Opossum Posse

gcc --version
gcc (GCC) 14.1.1 20240522

kernel/bpf/bpf_local_storage.c: In function ‘bpf_local_storage_map_alloc’:
kernel/bpf/bpf_local_storage.c:785:60: error: ‘kvmalloc_array_node_noprof’ sizes specified with ‘sizeof’ in the earlier argument and not in the later argument [-Werror=calloc-transposed-args]
  785 |         smap->buckets = bpf_map_kvcalloc(&smap->map, sizeof(*smap->buckets),

Thank you,
Péter

> by Andrii Nakryiko <andrii@...nel.org>:
> 
> On Thu, 16 May 2024 12:54:11 +0530 you wrote:
>> The original function call passed size of smap->bucket before the number of
>> buckets which raises the error 'calloc-transposed-args' on compilation.
>>
>> Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@...il.com>
>> ---
>>  kernel/bpf/bpf_local_storage.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Here is the summary with links:
>   - bpf: fix order of args in call to bpf_map_kvcalloc
>     https://git.kernel.org/bpf/bpf-next/c/71ed6c266348
> 
> You are awesome, thank you!
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