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ext4: use kmalloc_array() for array space allocation

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Replace kmalloc(size * sizeof) with kmalloc_array() for safer memory
allocation and overflow prevention.

Cc: stable@kernel.org
Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
Link: https://patch.msgid.link/20250811125816.570142-1-liaoyuanhong@vivo.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Liao Yuanhong 2025-08-11 20:58:16 +08:00 committed by Theodore Ts'o
parent 02c7f7219a
commit 76dba1fe27
1 changed files with 3 additions and 2 deletions
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5
fs/ext4/orphan.c
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@ -589,8 +589,9 @@ int ext4_init_orphan_info(struct super_block *sb)
}
oi->of_blocks = inode->i_size >> sb->s_blocksize_bits;
oi->of_csum_seed = EXT4_I(inode)->i_csum_seed;
oi->of_binfo = kmalloc(oi->of_blocks*sizeof(struct ext4_orphan_block),
GFP_KERNEL);
oi->of_binfo = kmalloc_array(oi->of_blocks,
sizeof(struct ext4_orphan_block),
GFP_KERNEL);
if (!oi->of_binfo) {
ret = -ENOMEM;
goto out_put;