linux-kernel - [bug report] btrfs: tests: zoned: add tests cases for zoned code

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Message-ID: <aYrvqbjR7S0RtjSI@stanley.mountain>
Date: Tue, 10 Feb 2026 11:43:21 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Naohiro Aota <naohiro.aota@....com>
Cc: linux-btrfs@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [bug report] btrfs: tests: zoned: add tests cases for zoned code

[ Smatch checking is paused while we raise funding. #SadFace
  https://lore.kernel.org/all/aTaiGSbWZ9DJaGo7@stanley.mountain/ -dan ]
Hello Naohiro Aota,

Commit df321b214f62 ("btrfs: tests: zoned: add tests cases for zoned
code") from Feb 4, 2026 (linux-next), leads to the following Smatch
static checker warning:

	fs/btrfs/tests/zoned-tests.c:68 test_load_zone_info()
	warn: duplicate check 'zone_info' (previous on line 62)

fs/btrfs/tests/zoned-tests.c
    40 static int test_load_zone_info(struct btrfs_fs_info *fs_info,
    41                                const struct load_zone_info_test_vector *test)
    42 {
    43         struct btrfs_block_group *bg __free(btrfs_free_dummy_block_group) = NULL;
    44         struct btrfs_chunk_map *map __free(btrfs_free_chunk_map) = NULL;
    45         struct zone_info AUTO_KFREE(zone_info);
    46         unsigned long AUTO_KFREE(active);
    47         int ret;
    48 
    49         bg = btrfs_alloc_dummy_block_group(fs_info, test->bg_length);
    50         if (!bg) {
    51                 test_std_err(TEST_ALLOC_BLOCK_GROUP);
    52                 return -ENOMEM;
    53         }
    54 
    55         map = btrfs_alloc_chunk_map(test->num_stripes, GFP_KERNEL);
    56         if (!map) {
    57                 test_std_err(TEST_ALLOC_EXTENT_MAP);
    58                 return -ENOMEM;
    59         }
    60 
    61         zone_info = kcalloc(test->num_stripes, sizeof(*zone_info), GFP_KERNEL);
    62         if (!zone_info) {
    63                 test_err("cannot allocate zone info");
    64                 return -ENOMEM;
    65         }
    66 
    67         active = bitmap_zalloc(test->num_stripes, GFP_KERNEL);
--> 68         if (!zone_info) {

s/zone_info/active/

    69                 test_err("cannot allocate active bitmap");
    70                 return -ENOMEM;
    71         }
    72 

regards,
dan carpenter