linux-kernel - Re: [PATCH v2] f2fs: fix zoned block device information initialization

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Date: Mon, 22 Jan 2024 09:44:37 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: oe-kbuild@...ts.linux.dev, Wenjie Qi <qwjhust@...il.com>,
	jaegeuk@...nel.org, chao@...nel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev, hustqwj@...t.edu.cn,
	Wenjie Qi <qwjhust@...il.com>
Subject: Re: [PATCH v2] f2fs: fix zoned block device information
 initialization

Hi Wenjie,

kernel test robot noticed the following build warnings:

https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Wenjie-Qi/f2fs-fix-zoned-block-device-information-initialization/20240116-220824
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev-test
patch link:    https://lore.kernel.org/r/20240116140513.1222-1-qwjhust%40gmail.com
patch subject: [PATCH v2] f2fs: fix zoned block device information initialization
config: x86_64-randconfig-161-20240119 (https://download.01.org/0day-ci/archive/20240120/202401201237.ovVyEKvs-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
| Closes: https://lore.kernel.org/r/202401201237.ovVyEKvs-lkp@intel.com/

New smatch warnings:
fs/f2fs/super.c:2393 f2fs_remount() warn: missing error code 'err'

Old smatch warnings:
fs/f2fs/super.c:4040 read_raw_super_block() warn: possible memory leak of 'super'

vim +/err +2393 fs/f2fs/super.c

4b2414d04e9912 Chao Yu        2017-08-08  2371  
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2372  	/* recover superblocks we couldn't write due to previous RO mount */
1751e8a6cb935e Linus Torvalds 2017-11-27  2373  	if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2374  		err = f2fs_commit_super(sbi, false);
dcbb4c10e6d969 Joe Perches    2019-06-18  2375  		f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
dcbb4c10e6d969 Joe Perches    2019-06-18  2376  			  err);
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2377  		if (!err)
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2378  			clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2379  	}
df728b0f6954c3 Jaegeuk Kim    2016-03-23  2380  
458c15dfbce62c Chao Yu        2023-05-23  2381  	default_options(sbi, true);
26666c8a4366de Chao Yu        2014-09-15  2382  
696c018c7718f5 Namjae Jeon    2013-06-16  2383  	/* parse mount options */
ed318a6cc0b620 Eric Biggers   2020-05-12  2384  	err = parse_options(sb, data, true);
696c018c7718f5 Namjae Jeon    2013-06-16  2385  	if (err)
696c018c7718f5 Namjae Jeon    2013-06-16  2386  		goto restore_opts;
696c018c7718f5 Namjae Jeon    2013-06-16  2387  
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2388  #ifdef CONFIG_BLK_DEV_ZONED
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2389  	if (sbi->max_active_zones && sbi->max_active_zones < F2FS_OPTION(sbi).active_logs) {
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2390  		f2fs_err(sbi,
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2391  			"zoned: max active zones %u is too small, need at least %u active zones",
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2392  				 sbi->max_active_zones, F2FS_OPTION(sbi).active_logs);
ed7a1efe8afd55 Wenjie Qi      2024-01-16 @2393  		goto restore_opts;

err = -EINVAL?

ed7a1efe8afd55 Wenjie Qi      2024-01-16  2394  	}
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2395  #endif
ed7a1efe8afd55 Wenjie Qi      2024-01-16  2396  
b62e71be2110d8 Chao Yu        2023-04-23  2397  	/* flush outstanding errors before changing fs state */
b62e71be2110d8 Chao Yu        2023-04-23  2398  	flush_work(&sbi->s_error_work);
b62e71be2110d8 Chao Yu        2023-04-23  2399  
696c018c7718f5 Namjae Jeon    2013-06-16  2400  	/*
696c018c7718f5 Namjae Jeon    2013-06-16  2401  	 * Previous and new state of filesystem is RO,
876dc59eb1f013 Gu Zheng       2014-04-11  2402  	 * so skip checking GC and FLUSH_MERGE conditions.
696c018c7718f5 Namjae Jeon    2013-06-16  2403  	 */
1751e8a6cb935e Linus Torvalds 2017-11-27  2404  	if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c7718f5 Namjae Jeon    2013-06-16  2405  		goto skip;
696c018c7718f5 Namjae Jeon    2013-06-16  2406  
d78dfefcde9d31 Chao Yu        2023-04-04  2407  	if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) {
a7d9fe3c338870 Jaegeuk Kim    2021-05-21  2408  		err = -EROFS;
a7d9fe3c338870 Jaegeuk Kim    2021-05-21  2409  		goto restore_opts;
a7d9fe3c338870 Jaegeuk Kim    2021-05-21  2410  	}
a7d9fe3c338870 Jaegeuk Kim    2021-05-21  2411  

-- 
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