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ext4: use kmalloc_array() for array space allocation

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commit 76dba1fe277f6befd6ef650e1946f626c547387a upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liao Yuanhong
2025-08-11 20:58:16 +08:00
committed by Greg Kroah-Hartman
parent 173270d9fe
commit e0bb195aea
1 changed files with 3 additions and 2 deletions
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5
fs/ext4/orphan.c
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@@ -590,8 +590,9 @@ 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;