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Message-ID: <202503102108.U88XuKx1-lkp@intel.com>
Date: Mon, 10 Mar 2025 21:52:13 +0800
From: kernel test robot <lkp@...el.com>
To: Eric Dumazet <edumazet@...gle.com>,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: oe-kbuild-all@...ts.linux.dev, David Ahern <dsahern@...nel.org>,
	Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next 3/4] inet: frags: change inet_frag_kill() to
 defer refcount updates

Hi Eric,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Eric-Dumazet/inet-frags-add-inet_frag_putn-helper/20250310-013501
base:   net-next/main
patch link:    https://lore.kernel.org/r/20250309173151.2863314-4-edumazet%40google.com
patch subject: [PATCH net-next 3/4] inet: frags: change inet_frag_kill() to defer refcount updates
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20250310/202503102108.U88XuKx1-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250310/202503102108.U88XuKx1-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503102108.U88XuKx1-lkp@intel.com/

All errors (new ones prefixed by >>):

   net/ieee802154/6lowpan/reassembly.c: In function 'lowpan_frag_rcv':
>> net/ieee802154/6lowpan/reassembly.c:312:23: error: too few arguments to function 'lowpan_frag_queue'
     312 |                 ret = lowpan_frag_queue(fq, skb, frag_type);
         |                       ^~~~~~~~~~~~~~~~~
   net/ieee802154/6lowpan/reassembly.c:86:12: note: declared here
      86 | static int lowpan_frag_queue(struct lowpan_frag_queue *fq,
         |            ^~~~~~~~~~~~~~~~~


vim +/lowpan_frag_queue +312 net/ieee802154/6lowpan/reassembly.c

7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  280  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  281  int lowpan_frag_rcv(struct sk_buff *skb, u8 frag_type)
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  282  {
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  283  	struct lowpan_frag_queue *fq;
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  284  	struct net *net = dev_net(skb->dev);
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  285  	struct lowpan_802154_cb *cb = lowpan_802154_cb(skb);
f18fa5de5ba7f1d net/ieee802154/6lowpan/reassembly.c Alexander Aring    2018-04-20  286  	struct ieee802154_hdr hdr = {};
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  287  	int err;
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  288  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  289  	if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  290  		goto err;
ae531b9475f62c5 net/ieee802154/reassembly.c         Phoebe Buckheister 2014-03-14  291  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  292  	err = lowpan_get_cb(skb, frag_type, cb);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  293  	if (err < 0)
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  294  		goto err;
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  295  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  296  	if (frag_type == LOWPAN_DISPATCH_FRAG1) {
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  297  		err = lowpan_invoke_frag_rx_handlers(skb);
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  298  		if (err == NET_RX_DROP)
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  299  			goto err;
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  300  	}
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  301  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  302  	if (cb->d_size > IPV6_MIN_MTU) {
6697dabe27e0330 net/ieee802154/reassembly.c         Martin Townsend    2014-08-19  303  		net_warn_ratelimited("lowpan_frag_rcv: datagram size exceeds MTU\n");
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  304  		goto err;
6697dabe27e0330 net/ieee802154/reassembly.c         Martin Townsend    2014-08-19  305  	}
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  306  
72a5e6bb5120d64 net/ieee802154/6lowpan/reassembly.c Alexander Aring    2015-09-02  307  	fq = fq_find(net, cb, &hdr.source, &hdr.dest);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  308  	if (fq != NULL) {
aec42e105cebf42 net/ieee802154/6lowpan/reassembly.c Eric Dumazet       2025-03-09  309  		int ret, refs = 1;
4710d806fcb8251 net/ieee802154/reassembly.c         Varka Bhadram      2014-07-02  310  
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  311  		spin_lock(&fq->q.lock);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28 @312  		ret = lowpan_frag_queue(fq, skb, frag_type);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  313  		spin_unlock(&fq->q.lock);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  314  
aec42e105cebf42 net/ieee802154/6lowpan/reassembly.c Eric Dumazet       2025-03-09  315  		inet_frag_putn(&fq->q, refs);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  316  		return ret;
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  317  	}
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  318  
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  319  err:
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  320  	kfree_skb(skb);
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  321  	return -1;
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  322  }
7240cdec60b136f net/ieee802154/reassembly.c         Alexander Aring    2014-02-28  323  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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