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fs/ntfs3: Fix missing i_op in ntfs_read_mft

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There is null pointer dereference because i_op == NULL.
The bug happens because we don't initialize i_op for records in $Extend.
Fixes: 82cae269cf ("fs/ntfs3: Add initialization of super block")

Reported-by: Liangbin Lian <jjm2473@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2022-05-26 12:51:03 +03:00
parent 19d1b7872d
commit 37a530bfe5
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fs/ntfs3/inode.c
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@ -430,6 +430,7 @@ end_enum:
} else if (fname && fname->home.low == cpu_to_le32(MFT_REC_EXTEND) &&
fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) {
/* Records in $Extend are not a files or general directories. */
inode->i_op = &ntfs_file_inode_operations;
} else {
err = -EINVAL;
goto out;