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| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2024-03-22 19:55:18 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2024-05-03 07:04:35 +0300 |
| commit | a11adf7be9d8baefe798eab49c356ab8e3924f0e (patch) | |
| tree | 9e320ea129a6b892ecf2f9ede5e25efb48af1960 /fs/ext4 | |
| parent | 0a46ef234756dca04623b7591e8ebb3440622f0b (diff) | |
| download | linux-a11adf7be9d8baefe798eab49c356ab8e3924f0e.tar.xz | |
ext4: implement filesystem specific alloc_inode in unit test
We expect inode with ext4_info_info type as following:
mbt_kunit_init
mbt_mb_init
ext4_mb_init
ext4_mb_init_backend
sbi->s_buddy_cache = new_inode(sb);
EXT4_I(sbi->s_buddy_cache)->i_disksize = 0;
Implement alloc_inode ionde with ext4_inode_info type to avoid
out-of-bounds write.
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322165518.8147-1-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/mballoc-test.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/ext4/mballoc-test.c b/fs/ext4/mballoc-test.c index 044ca5238f41..49aabcfe6b46 100644 --- a/fs/ext4/mballoc-test.c +++ b/fs/ext4/mballoc-test.c @@ -30,7 +30,31 @@ struct mbt_ext4_super_block { #define MBT_CTX(_sb) (&MBT_SB(_sb)->mbt_ctx) #define MBT_GRP_CTX(_sb, _group) (&MBT_CTX(_sb)->grp_ctx[_group]) +static struct inode *mbt_alloc_inode(struct super_block *sb) +{ + struct ext4_inode_info *ei; + + ei = kmalloc(sizeof(struct ext4_inode_info), GFP_KERNEL); + if (!ei) + return NULL; + + INIT_LIST_HEAD(&ei->i_orphan); + init_rwsem(&ei->xattr_sem); + init_rwsem(&ei->i_data_sem); + inode_init_once(&ei->vfs_inode); + ext4_fc_init_inode(&ei->vfs_inode); + + return &ei->vfs_inode; +} + +static void mbt_free_inode(struct inode *inode) +{ + kfree(EXT4_I(inode)); +} + static const struct super_operations mbt_sops = { + .alloc_inode = mbt_alloc_inode, + .free_inode = mbt_free_inode, }; static void mbt_kill_sb(struct super_block *sb) |