This is a note to let you know that I've just added the patch titled
cifs: fix pcchunk length type in smb2_copychunk_range
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cifs-fix-pcchunk-length-type-in-smb2_copychunk_range.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d66cde50c3c868af7abddafce701bb86e4a93039 Mon Sep 17 00:00:00 2001
From: Pawel Witek <pawel.ireneusz.witek@xxxxxxxxx>
Date: Fri, 5 May 2023 17:14:59 +0200
Subject: cifs: fix pcchunk length type in smb2_copychunk_range
From: Pawel Witek <pawel.ireneusz.witek@xxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Signed-off-by: Pawel Witek <pawel.ireneusz.witek@xxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/smb2ops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1180,7 +1180,7 @@ smb2_copychunk_range(const unsigned int
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);
Patches currently in stable-queue which might be from pawel.ireneusz.witek@xxxxxxxxx are
queue-4.19/cifs-fix-pcchunk-length-type-in-smb2_copychunk_range.patch
