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From: Christoph Hellwig <hch@lst.de>
To: kbuild-all@lists.01.org
Subject: Re: [linux-next:master 2079/2594] fs/btrfs/volumes.c:6546 __btrfs_map_block() error: we previously assumed 'mirror_num_p' could be null (see line 6373)
Date: Wed, 24 Aug 2022 07:35:27 +0200	[thread overview]
Message-ID: <20220824053527.GA18584@lst.de> (raw)
In-Reply-To: <202208240734.u4Y7Q6sW-lkp@intel.com>

[-- Attachment #1: Type: text/plain, Size: 896 bytes --]

On Wed, Aug 24, 2022 at 08:28:26AM +0300, Dan Carpenter wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   05477f3653b82d8b3bcf39d2937d9893124976db
> commit: 51bf2819055847ce90006a368f8d2c07f408dd33 [2079/2594] btrfs: make the btrfs_io_context allocation in __btrfs_map_block optional
> config: nios2-randconfig-m031-20220824 (https://download.01.org/0day-ci/archive/20220824/202208240734.u4Y7Q6sW-lkp(a)intel.com/config)
> compiler: nios2-linux-gcc (GCC) 12.1.0
> 
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> 
> New smatch warnings:

The calling convention implies that either smap and mirror_num_p are both
NULL or neither.  We could add an extra check to shut up the validator
if this really helps.

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: kbuild@lists.01.org, Christoph Hellwig <hch@lst.de>,
	lkp@intel.com, kbuild-all@lists.01.org,
	Linux Memory Management List <linux-mm@kvack.org>,
	David Sterba <dsterba@suse.com>,
	Nikolay Borisov <nborisov@suse.com>,
	Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: Re: [linux-next:master 2079/2594] fs/btrfs/volumes.c:6546 __btrfs_map_block() error: we previously assumed 'mirror_num_p' could be null (see line 6373)
Date: Wed, 24 Aug 2022 07:35:27 +0200	[thread overview]
Message-ID: <20220824053527.GA18584@lst.de> (raw)
In-Reply-To: <202208240734.u4Y7Q6sW-lkp@intel.com>

On Wed, Aug 24, 2022 at 08:28:26AM +0300, Dan Carpenter wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   05477f3653b82d8b3bcf39d2937d9893124976db
> commit: 51bf2819055847ce90006a368f8d2c07f408dd33 [2079/2594] btrfs: make the btrfs_io_context allocation in __btrfs_map_block optional
> config: nios2-randconfig-m031-20220824 (https://download.01.org/0day-ci/archive/20220824/202208240734.u4Y7Q6sW-lkp@intel.com/config)
> compiler: nios2-linux-gcc (GCC) 12.1.0
> 
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> 
> New smatch warnings:

The calling convention implies that either smap and mirror_num_p are both
NULL or neither.  We could add an extra check to shut up the validator
if this really helps.


  reply	other threads:[~2022-08-24  5:35 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-23 23:42 [linux-next:master 2079/2594] fs/btrfs/volumes.c:6546 __btrfs_map_block() error: we previously assumed 'mirror_num_p' could be null (see line 6373) kernel test robot
2022-08-24  5:28 ` Dan Carpenter
2022-08-24  5:28 ` Dan Carpenter
2022-08-24  5:35 ` Christoph Hellwig [this message]
2022-08-24  5:35   ` Christoph Hellwig
2022-08-24  6:21   ` Dan Carpenter
2022-08-24  6:21     ` Dan Carpenter
2022-08-24  6:21     ` Dan Carpenter

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