system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-03 09:48:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

NFSD: fix LISTXATTRS returning more bytes than maxcount

Browse source 
The maxcount is the maximum number of bytes for the LISTXATTRS4resok
result. This includes the cookie and the count for the name array,
thus subtract 12 bytes from the maxcount: 8 (cookie) + 4 (array count)
when filling up the name array.

Fixes: 23e50fe3a5 ("nfsd: implement the xattr functions and en/decode logic")
Signed-off-by: Jorge Mora <mora@netapp.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jorge Mora 2024-01-25 07:42:23 -07:00 committed by Chuck Lever
parent 2f73f37d66
commit 31e4bb8fb8
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
fs/nfsd/nfs4xdr.c
View file

@ -5423,7 +5423,7 @@ nfsd4_encode_listxattrs(struct nfsd4_compoundres *resp, __be32 nfserr,
*/
cookie_offset = xdr->buf->len;
count_offset = cookie_offset + 8;
p = xdr_reserve_space(xdr, 12);
p = xdr_reserve_space(xdr, XDR_UNIT * 3);
if (!p) {
status = nfserr_resource;
goto out;
@ -5434,7 +5434,8 @@ nfsd4_encode_listxattrs(struct nfsd4_compoundres *resp, __be32 nfserr,
sp = listxattrs->lsxa_buf;
nuser = 0;
xdrleft = listxattrs->lsxa_maxcount;
/* Bytes left is maxcount - 8 (cookie) - 4 (array count) */
xdrleft = listxattrs->lsxa_maxcount - XDR_UNIT * 3;
while (left > 0 && xdrleft > 0) {
slen = strlen(sp);