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Subjectnet/sunrpc/svcsock.c:527:32: warning: Variable 'uninitialized_var' is assigned a value that is never used. [unreadVariable]
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f5e94d10e4c468357019e5c28d48499f677b284f
commit: da1661b93bf489cdbc8bcea919b165d31b4810bf SUNRPC: Teach server to use xprt_sock_sendmsg for socket sends
date: 3 weeks ago

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>


cppcheck warnings: (new ones prefixed by >>)

net/sunrpc/svcsock.c:405:9: warning: union member 'Anonymous0::all' is never used. [unusedStructMember]
long all[SVC_PKTINFO_SPACE / sizeof(long)];
^
net/sunrpc/svcsock.c:518:9: warning: union member 'Anonymous1::all' is never used. [unusedStructMember]
long all[SVC_PKTINFO_SPACE / sizeof(long)];
^
>> net/sunrpc/svcsock.c:527:32: warning: Variable 'uninitialized_var' is assigned a value that is never used. [unreadVariable]
unsigned int uninitialized_var(sent);
^

vim +/uninitialized_var +527 net/sunrpc/svcsock.c

504
505 /**
506 * svc_udp_sendto - Send out a reply on a UDP socket
507 * @rqstp: completed svc_rqst
508 *
509 * Returns the number of bytes sent, or a negative errno.
510 */
511 static int svc_udp_sendto(struct svc_rqst *rqstp)
512 {
513 struct svc_xprt *xprt = rqstp->rq_xprt;
514 struct svc_sock *svsk = container_of(xprt, struct svc_sock, sk_xprt);
515 struct xdr_buf *xdr = &rqstp->rq_res;
516 union {
517 struct cmsghdr hdr;
518 long all[SVC_PKTINFO_SPACE / sizeof(long)];
519 } buffer;
520 struct cmsghdr *cmh = &buffer.hdr;
521 struct msghdr msg = {
522 .msg_name = &rqstp->rq_addr,
523 .msg_namelen = rqstp->rq_addrlen,
524 .msg_control = cmh,
525 .msg_controllen = sizeof(buffer),
526 };
> 527 unsigned int uninitialized_var(sent);
528 int err;
529
530 svc_set_cmsg_data(rqstp, cmh);
531
532 err = xprt_sock_sendmsg(svsk->sk_sock, &msg, xdr, 0, 0, &sent);
533 xdr_free_bvec(xdr);
534 if (err == -ECONNREFUSED) {
535 /* ICMP error on earlier request. */
536 err = xprt_sock_sendmsg(svsk->sk_sock, &msg, xdr, 0, 0, &sent);
537 xdr_free_bvec(xdr);
538 }
539 if (err < 0)
540 return err;
541 return sent;
542 }
543

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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