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Validate every EA entry only if the buffer length is required to prevent
large memory allocation.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Validate p_ea->ea_name_length tightly, and the used entry size
for every EA.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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if ea_info_qlen exceeds all_ea_size, OOB can happen.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Enforce the exact-size reads for $LXUID, $LXGID, $LXMOD, $LXDEV.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Use NTFS_VOL_GID(not NTFS_VOL_UID) for restoring the gid, and call
ntfs_ea_get_wsl_inode() only when $EA_INFORMATION exists.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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There is an inconsistent use of pr_err() statements in the current code.
Many error messages are missing the \n termination, what results in the
messages being printed with a delay, only after a next printk() line is
printed. It prevents relying on printk() to monitor the driver errors.
This patch is modifying only text messages, no functional change.
Signed-off-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The variable ctx can be null and once confirmed to be null in its error
path goes to label err_out. Once there it can be immediately dereferenced
by the function ntfs_attr_put_search_ctx() which has no null pointer check.
Detected by Smatch:
fs/ntfs/ea.c:687 ntfs_new_attr_flags() error:
we previously assumed 'ctx' could be null (see line 577)
Add null pointer check before running ntfs_attr_put_search_ctx() in
error path.
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Implement support for Extended Attributes and Reparse Points, enabling
Posix ACL support and, and compatibility with Windows Subsystem for
Linux (WSL) metadata.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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