From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: [linux-next:master 3894/5318] net/mctp/device.c:133 mctp_dump_addrinfo() error: uninitialized symbol 'idx'.
Date: Thu, 05 Aug 2021 15:31:49 +0800 [thread overview]
Message-ID: <202108051545.DcUtze2W-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Jeremy Kerr <jk@codeconstruct.com.au>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 2f73937c9aa561e2082839bc1a8efaac75d6e244
commit: 583be982d93479ea3d85091b0fd0b01201ede87d [3894/5318] mctp: Add device handling and netlink interface
:::::: branch date: 14 hours ago
:::::: commit date: 7 days ago
config: nios2-randconfig-m031-20210804 (attached as .config)
compiler: nios2-linux-gcc (GCC) 10.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
net/mctp/device.c:133 mctp_dump_addrinfo() error: uninitialized symbol 'idx'.
Old smatch warnings:
arch/nios2/include/asm/thread_info.h:71 current_thread_info() error: uninitialized symbol 'sp'.
vim +/idx +133 net/mctp/device.c
583be982d93479 Jeremy Kerr 2021-07-29 93
583be982d93479 Jeremy Kerr 2021-07-29 94 static int mctp_dump_addrinfo(struct sk_buff *skb, struct netlink_callback *cb)
583be982d93479 Jeremy Kerr 2021-07-29 95 {
583be982d93479 Jeremy Kerr 2021-07-29 96 struct mctp_dump_cb *mcb = (void *)cb->ctx;
583be982d93479 Jeremy Kerr 2021-07-29 97 struct net *net = sock_net(skb->sk);
583be982d93479 Jeremy Kerr 2021-07-29 98 struct hlist_head *head;
583be982d93479 Jeremy Kerr 2021-07-29 99 struct net_device *dev;
583be982d93479 Jeremy Kerr 2021-07-29 100 struct ifaddrmsg *hdr;
583be982d93479 Jeremy Kerr 2021-07-29 101 struct mctp_dev *mdev;
583be982d93479 Jeremy Kerr 2021-07-29 102 int ifindex;
583be982d93479 Jeremy Kerr 2021-07-29 103 int idx, rc;
583be982d93479 Jeremy Kerr 2021-07-29 104
583be982d93479 Jeremy Kerr 2021-07-29 105 hdr = nlmsg_data(cb->nlh);
583be982d93479 Jeremy Kerr 2021-07-29 106 // filter by ifindex if requested
583be982d93479 Jeremy Kerr 2021-07-29 107 ifindex = hdr->ifa_index;
583be982d93479 Jeremy Kerr 2021-07-29 108
583be982d93479 Jeremy Kerr 2021-07-29 109 rcu_read_lock();
583be982d93479 Jeremy Kerr 2021-07-29 110 for (; mcb->h < NETDEV_HASHENTRIES; mcb->h++, mcb->idx = 0) {
583be982d93479 Jeremy Kerr 2021-07-29 111 idx = 0;
583be982d93479 Jeremy Kerr 2021-07-29 112 head = &net->dev_index_head[mcb->h];
583be982d93479 Jeremy Kerr 2021-07-29 113 hlist_for_each_entry_rcu(dev, head, index_hlist) {
583be982d93479 Jeremy Kerr 2021-07-29 114 if (idx >= mcb->idx &&
583be982d93479 Jeremy Kerr 2021-07-29 115 (ifindex == 0 || ifindex == dev->ifindex)) {
583be982d93479 Jeremy Kerr 2021-07-29 116 mdev = __mctp_dev_get(dev);
583be982d93479 Jeremy Kerr 2021-07-29 117 if (mdev) {
583be982d93479 Jeremy Kerr 2021-07-29 118 rc = mctp_dump_dev_addrinfo(mdev,
583be982d93479 Jeremy Kerr 2021-07-29 119 skb, cb);
583be982d93479 Jeremy Kerr 2021-07-29 120 // Error indicates full buffer, this
583be982d93479 Jeremy Kerr 2021-07-29 121 // callback will get retried.
583be982d93479 Jeremy Kerr 2021-07-29 122 if (rc < 0)
583be982d93479 Jeremy Kerr 2021-07-29 123 goto out;
583be982d93479 Jeremy Kerr 2021-07-29 124 }
583be982d93479 Jeremy Kerr 2021-07-29 125 }
583be982d93479 Jeremy Kerr 2021-07-29 126 idx++;
583be982d93479 Jeremy Kerr 2021-07-29 127 // reset for next iteration
583be982d93479 Jeremy Kerr 2021-07-29 128 mcb->a_idx = 0;
583be982d93479 Jeremy Kerr 2021-07-29 129 }
583be982d93479 Jeremy Kerr 2021-07-29 130 }
583be982d93479 Jeremy Kerr 2021-07-29 131 out:
583be982d93479 Jeremy Kerr 2021-07-29 132 rcu_read_unlock();
583be982d93479 Jeremy Kerr 2021-07-29 @133 mcb->idx = idx;
583be982d93479 Jeremy Kerr 2021-07-29 134
583be982d93479 Jeremy Kerr 2021-07-29 135 return skb->len;
583be982d93479 Jeremy Kerr 2021-07-29 136 }
583be982d93479 Jeremy Kerr 2021-07-29 137
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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