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cifs: fix pcchunk length type in smb2_copychunk_range

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commit d66cde50c3c868af7abddafce701bb86e4a93039 upstream.

Change type of pcchunk->Length from u32 to u64 to match
smb2_copychunk_range arguments type. Fixes the problem where performing
server-side copy with CIFS_IOC_COPYCHUNK_FILE ioctl resulted in incomplete
copy of large files while returning -EINVAL.

Fixes: 9bf0c9cd4314 ("CIFS: Fix SMB2/SMB3 Copy offload support (refcopy) for large files")
Cc: <stable@vger.kernel.org>
Signed-off-by: Pawel Witek <pawel.ireneusz.witek@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pawel Witek 2023-05-05 17:14:59 +02:00 committed by Greg Kroah-Hartman
parent 829c20fd7a
commit 8c2cdb7326
1 changed files with 1 additions and 1 deletions

2
fs/cifs/smb2ops.c

@ -1784,7 +1784,7 @@ smb2_copychunk_range(const unsigned int xid,
pcchunk->SourceOffset = cpu_to_le64(src_off);
pcchunk->TargetOffset = cpu_to_le64(dest_off);
pcchunk->Length =
cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
/* Request server copy to target from src identified by key */
kfree(retbuf);