* [deller-parisc:for-next 2/9] net/ipv4/af_inet.c:1503:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true
@ 2026-04-08 2:32 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-04-08 2:32 UTC (permalink / raw)
To: Helge Deller; +Cc: llvm, oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git for-next
head: bc8a19a194d5a72df5982c04f8a9e7bcff1306ca
commit: 595407f94f5e5b778a349bd5a323c5051920b864 [2/9] net: Avoid unaligned access in inet_gro_receive()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260408/202604081003.KPd0fpBI-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260408/202604081003.KPd0fpBI-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604081003.KPd0fpBI-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> net/ipv4/af_inet.c:1503:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1503 | if (unlikely(ip_fast_csum((u8 *)iph, 5)))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:77:22: note: expanded from macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1503:2: note: remove the 'if' if its condition is always false
1503 | if (unlikely(ip_fast_csum((u8 *)iph, 5)))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1504 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1500:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1500 | if (ip_is_fragment(iph))
| ^~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1500:2: note: remove the 'if' if its condition is always false
1500 | if (ip_is_fragment(iph))
| ^~~~~~~~~~~~~~~~~~~~~~~~
1501 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1497:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1497 | if (*(u8 *)iph != 0x45)
| ^~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1497:2: note: remove the 'if' if its condition is always false
1497 | if (*(u8 *)iph != 0x45)
| ^~~~~~~~~~~~~~~~~~~~~~~
1498 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1494:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1494:2: note: remove the 'if' if its condition is always false
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1495 | goto out;
| ~~~~~~~~
>> net/ipv4/af_inet.c:1494:6: warning: variable 'flush' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized]
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1494:6: note: remove the '||' if its condition is always false
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~
net/ipv4/af_inet.c:1488:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1488 | if (unlikely(!iph))
| ^~~~~~~~~~~~~~
include/linux/compiler.h:77:22: note: expanded from macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1488:2: note: remove the 'if' if its condition is always false
1488 | if (unlikely(!iph))
| ^~~~~~~~~~~~~~~~~~~
1489 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1482:13: note: initialize the variable 'flush' to silence this warning
1482 | __u16 flush;
| ^
| = 0
6 warnings generated.
vim +1503 net/ipv4/af_inet.c
418e897e0716b2 Willem de Bruijn 2019-02-20 1473
d4546c2509b1e9 David Miller 2018-06-24 1474 struct sk_buff *inet_gro_receive(struct list_head *head, struct sk_buff *skb)
73cc19f1556b95 Herbert Xu 2008-12-15 1475 {
bca49f843eac59 Vlad Yasevich 2012-11-15 1476 const struct net_offload *ops;
d4546c2509b1e9 David Miller 2018-06-24 1477 struct sk_buff *pp = NULL;
b71d1d426d263b Eric Dumazet 2011-04-22 1478 const struct iphdr *iph;
d4546c2509b1e9 David Miller 2018-06-24 1479 struct sk_buff *p;
a5b1cf288d4200 Herbert Xu 2009-05-26 1480 unsigned int hlen;
a5b1cf288d4200 Herbert Xu 2009-05-26 1481 unsigned int off;
595407f94f5e5b Helge Deller 2026-04-07 1482 __u16 flush;
73cc19f1556b95 Herbert Xu 2008-12-15 1483 int proto;
73cc19f1556b95 Herbert Xu 2008-12-15 1484
a5b1cf288d4200 Herbert Xu 2009-05-26 1485 off = skb_gro_offset(skb);
a5b1cf288d4200 Herbert Xu 2009-05-26 1486 hlen = off + sizeof(*iph);
35ffb66547295c Richard Gobert 2022-08-23 1487 iph = skb_gro_header(skb, hlen, off);
86911732d3996a Herbert Xu 2009-01-29 1488 if (unlikely(!iph))
73cc19f1556b95 Herbert Xu 2008-12-15 1489 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1490
f9242b6b28d612 David S. Miller 2012-06-19 1491 proto = iph->protocol;
73cc19f1556b95 Herbert Xu 2008-12-15 1492
bca49f843eac59 Vlad Yasevich 2012-11-15 1493 ops = rcu_dereference(inet_offloads[proto]);
f191a1d17f2270 Vlad Yasevich 2012-11-15 @1494 if (!ops || !ops->callbacks.gro_receive)
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1495 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1496
a5ad24be728d43 Herbert Xu 2009-02-08 1497 if (*(u8 *)iph != 0x45)
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1498 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1499
9b83e0319840ec Steffen Klassert 2017-04-28 1500 if (ip_is_fragment(iph))
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1501 goto out;
9b83e0319840ec Steffen Klassert 2017-04-28 1502
a9e050f4e7f9d3 Eric Dumazet 2012-08-05 @1503 if (unlikely(ip_fast_csum((u8 *)iph, 5)))
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1504 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1505
b1a78b9b98862c Xin Long 2023-01-28 1506 NAPI_GRO_CB(skb)->proto = proto;
595407f94f5e5b Helge Deller 2026-04-07 1507 flush = (get_unaligned_be16(&iph->tot_len) ^ skb_gro_len(skb)) |
595407f94f5e5b Helge Deller 2026-04-07 1508 (get_unaligned_be16(&iph->frag_off) & ~IP_DF);
73cc19f1556b95 Herbert Xu 2008-12-15 1509
d4546c2509b1e9 David Miller 2018-06-24 1510 list_for_each_entry(p, head, list) {
73cc19f1556b95 Herbert Xu 2008-12-15 1511 struct iphdr *iph2;
73cc19f1556b95 Herbert Xu 2008-12-15 1512
73cc19f1556b95 Herbert Xu 2008-12-15 1513 if (!NAPI_GRO_CB(p)->same_flow)
73cc19f1556b95 Herbert Xu 2008-12-15 1514 continue;
73cc19f1556b95 Herbert Xu 2008-12-15 1515
299603e8370a93 Jerry Chu 2013-12-11 1516 iph2 = (struct iphdr *)(p->data + off);
299603e8370a93 Jerry Chu 2013-12-11 1517 /* The above works because, with the exception of the top
299603e8370a93 Jerry Chu 2013-12-11 1518 * (inner most) layer, we only aggregate pkts with the same
299603e8370a93 Jerry Chu 2013-12-11 1519 * hdr length so all the hdrs we'll need to verify will start
299603e8370a93 Jerry Chu 2013-12-11 1520 * at the same offset.
299603e8370a93 Jerry Chu 2013-12-11 1521 */
a5ad24be728d43 Herbert Xu 2009-02-08 1522 if ((iph->protocol ^ iph2->protocol) |
595407f94f5e5b Helge Deller 2026-04-07 1523 (get_unaligned(&iph->saddr) ^ get_unaligned(&iph2->saddr)) |
595407f94f5e5b Helge Deller 2026-04-07 1524 (get_unaligned(&iph->daddr) ^ get_unaligned(&iph2->daddr))) {
73cc19f1556b95 Herbert Xu 2008-12-15 1525 NAPI_GRO_CB(p)->same_flow = 0;
73cc19f1556b95 Herbert Xu 2008-12-15 1526 continue;
73cc19f1556b95 Herbert Xu 2008-12-15 1527 }
73cc19f1556b95 Herbert Xu 2008-12-15 1528 }
73cc19f1556b95 Herbert Xu 2008-12-15 1529
73cc19f1556b95 Herbert Xu 2008-12-15 1530 NAPI_GRO_CB(skb)->flush |= flush;
be008726d0ac33 Willem de Bruijn 2024-05-23 1531 NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = off;
299603e8370a93 Jerry Chu 2013-12-11 1532
2c804d0f8fc779 Eric Dumazet 2014-09-30 1533 /* Note : No need to call skb_gro_postpull_rcsum() here,
2c804d0f8fc779 Eric Dumazet 2014-09-30 1534 * as we already checked checksum over ipv4 header was 0
2c804d0f8fc779 Eric Dumazet 2014-09-30 1535 */
86911732d3996a Herbert Xu 2009-01-29 1536 skb_gro_pull(skb, sizeof(*iph));
86911732d3996a Herbert Xu 2009-01-29 1537 skb_set_transport_header(skb, skb_gro_offset(skb));
73cc19f1556b95 Herbert Xu 2008-12-15 1538
028e0a4766844e Paolo Abeni 2018-12-14 1539 pp = indirect_call_gro_receive(tcp4_gro_receive, udp4_gro_receive,
028e0a4766844e Paolo Abeni 2018-12-14 1540 ops->callbacks.gro_receive, head, skb);
73cc19f1556b95 Herbert Xu 2008-12-15 1541
73cc19f1556b95 Herbert Xu 2008-12-15 1542 out:
5f114163f2f5eb Steffen Klassert 2017-02-15 1543 skb_gro_flush_final(skb, pp, flush);
73cc19f1556b95 Herbert Xu 2008-12-15 1544
73cc19f1556b95 Herbert Xu 2008-12-15 1545 return pp;
73cc19f1556b95 Herbert Xu 2008-12-15 1546 }
73cc19f1556b95 Herbert Xu 2008-12-15 1547
:::::: The code at line 1503 was first introduced by commit
:::::: a9e050f4e7f9d36afe0dcc0bddba864ee442715e net: tcp: GRO should be ECN friendly
:::::: TO: Eric Dumazet <edumazet@google.com>
:::::: CC: David S. Miller <davem@davemloft.net>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* [deller-parisc:for-next 2/9] net/ipv4/af_inet.c:1503:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true
@ 2026-04-08 2:53 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-04-08 2:53 UTC (permalink / raw)
To: Helge Deller; +Cc: llvm, oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git for-next
head: bc8a19a194d5a72df5982c04f8a9e7bcff1306ca
commit: 595407f94f5e5b778a349bd5a323c5051920b864 [2/9] net: Avoid unaligned access in inet_gro_receive()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260408/202604080419.GgJe0xs5-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260408/202604080419.GgJe0xs5-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604080419.GgJe0xs5-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> net/ipv4/af_inet.c:1503:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1503 | if (unlikely(ip_fast_csum((u8 *)iph, 5)))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:77:22: note: expanded from macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1503:2: note: remove the 'if' if its condition is always false
1503 | if (unlikely(ip_fast_csum((u8 *)iph, 5)))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1504 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1500:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1500 | if (ip_is_fragment(iph))
| ^~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1500:2: note: remove the 'if' if its condition is always false
1500 | if (ip_is_fragment(iph))
| ^~~~~~~~~~~~~~~~~~~~~~~~
1501 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1497:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1497 | if (*(u8 *)iph != 0x45)
| ^~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1497:2: note: remove the 'if' if its condition is always false
1497 | if (*(u8 *)iph != 0x45)
| ^~~~~~~~~~~~~~~~~~~~~~~
1498 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1494:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1494:2: note: remove the 'if' if its condition is always false
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1495 | goto out;
| ~~~~~~~~
>> net/ipv4/af_inet.c:1494:6: warning: variable 'flush' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized]
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1494:6: note: remove the '||' if its condition is always false
1494 | if (!ops || !ops->callbacks.gro_receive)
| ^~~~~~~
net/ipv4/af_inet.c:1488:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
1488 | if (unlikely(!iph))
| ^~~~~~~~~~~~~~
include/linux/compiler.h:77:22: note: expanded from macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
net/ipv4/af_inet.c:1543:31: note: uninitialized use occurs here
1543 | skb_gro_flush_final(skb, pp, flush);
| ^~~~~
net/ipv4/af_inet.c:1488:2: note: remove the 'if' if its condition is always false
1488 | if (unlikely(!iph))
| ^~~~~~~~~~~~~~~~~~~
1489 | goto out;
| ~~~~~~~~
net/ipv4/af_inet.c:1482:13: note: initialize the variable 'flush' to silence this warning
1482 | __u16 flush;
| ^
| = 0
6 warnings generated.
vim +1503 net/ipv4/af_inet.c
418e897e0716b2 Willem de Bruijn 2019-02-20 1473
d4546c2509b1e9 David Miller 2018-06-24 1474 struct sk_buff *inet_gro_receive(struct list_head *head, struct sk_buff *skb)
73cc19f1556b95 Herbert Xu 2008-12-15 1475 {
bca49f843eac59 Vlad Yasevich 2012-11-15 1476 const struct net_offload *ops;
d4546c2509b1e9 David Miller 2018-06-24 1477 struct sk_buff *pp = NULL;
b71d1d426d263b Eric Dumazet 2011-04-22 1478 const struct iphdr *iph;
d4546c2509b1e9 David Miller 2018-06-24 1479 struct sk_buff *p;
a5b1cf288d4200 Herbert Xu 2009-05-26 1480 unsigned int hlen;
a5b1cf288d4200 Herbert Xu 2009-05-26 1481 unsigned int off;
595407f94f5e5b Helge Deller 2026-04-07 1482 __u16 flush;
73cc19f1556b95 Herbert Xu 2008-12-15 1483 int proto;
73cc19f1556b95 Herbert Xu 2008-12-15 1484
a5b1cf288d4200 Herbert Xu 2009-05-26 1485 off = skb_gro_offset(skb);
a5b1cf288d4200 Herbert Xu 2009-05-26 1486 hlen = off + sizeof(*iph);
35ffb66547295c Richard Gobert 2022-08-23 1487 iph = skb_gro_header(skb, hlen, off);
86911732d3996a Herbert Xu 2009-01-29 1488 if (unlikely(!iph))
73cc19f1556b95 Herbert Xu 2008-12-15 1489 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1490
f9242b6b28d612 David S. Miller 2012-06-19 1491 proto = iph->protocol;
73cc19f1556b95 Herbert Xu 2008-12-15 1492
bca49f843eac59 Vlad Yasevich 2012-11-15 1493 ops = rcu_dereference(inet_offloads[proto]);
f191a1d17f2270 Vlad Yasevich 2012-11-15 @1494 if (!ops || !ops->callbacks.gro_receive)
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1495 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1496
a5ad24be728d43 Herbert Xu 2009-02-08 1497 if (*(u8 *)iph != 0x45)
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1498 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1499
9b83e0319840ec Steffen Klassert 2017-04-28 1500 if (ip_is_fragment(iph))
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1501 goto out;
9b83e0319840ec Steffen Klassert 2017-04-28 1502
a9e050f4e7f9d3 Eric Dumazet 2012-08-05 @1503 if (unlikely(ip_fast_csum((u8 *)iph, 5)))
fc1ca3348a74a1 Eric Dumazet 2021-11-23 1504 goto out;
73cc19f1556b95 Herbert Xu 2008-12-15 1505
b1a78b9b98862c Xin Long 2023-01-28 1506 NAPI_GRO_CB(skb)->proto = proto;
595407f94f5e5b Helge Deller 2026-04-07 1507 flush = (get_unaligned_be16(&iph->tot_len) ^ skb_gro_len(skb)) |
595407f94f5e5b Helge Deller 2026-04-07 1508 (get_unaligned_be16(&iph->frag_off) & ~IP_DF);
73cc19f1556b95 Herbert Xu 2008-12-15 1509
d4546c2509b1e9 David Miller 2018-06-24 1510 list_for_each_entry(p, head, list) {
73cc19f1556b95 Herbert Xu 2008-12-15 1511 struct iphdr *iph2;
73cc19f1556b95 Herbert Xu 2008-12-15 1512
73cc19f1556b95 Herbert Xu 2008-12-15 1513 if (!NAPI_GRO_CB(p)->same_flow)
73cc19f1556b95 Herbert Xu 2008-12-15 1514 continue;
73cc19f1556b95 Herbert Xu 2008-12-15 1515
299603e8370a93 Jerry Chu 2013-12-11 1516 iph2 = (struct iphdr *)(p->data + off);
299603e8370a93 Jerry Chu 2013-12-11 1517 /* The above works because, with the exception of the top
299603e8370a93 Jerry Chu 2013-12-11 1518 * (inner most) layer, we only aggregate pkts with the same
299603e8370a93 Jerry Chu 2013-12-11 1519 * hdr length so all the hdrs we'll need to verify will start
299603e8370a93 Jerry Chu 2013-12-11 1520 * at the same offset.
299603e8370a93 Jerry Chu 2013-12-11 1521 */
a5ad24be728d43 Herbert Xu 2009-02-08 1522 if ((iph->protocol ^ iph2->protocol) |
595407f94f5e5b Helge Deller 2026-04-07 1523 (get_unaligned(&iph->saddr) ^ get_unaligned(&iph2->saddr)) |
595407f94f5e5b Helge Deller 2026-04-07 1524 (get_unaligned(&iph->daddr) ^ get_unaligned(&iph2->daddr))) {
73cc19f1556b95 Herbert Xu 2008-12-15 1525 NAPI_GRO_CB(p)->same_flow = 0;
73cc19f1556b95 Herbert Xu 2008-12-15 1526 continue;
73cc19f1556b95 Herbert Xu 2008-12-15 1527 }
73cc19f1556b95 Herbert Xu 2008-12-15 1528 }
73cc19f1556b95 Herbert Xu 2008-12-15 1529
73cc19f1556b95 Herbert Xu 2008-12-15 1530 NAPI_GRO_CB(skb)->flush |= flush;
be008726d0ac33 Willem de Bruijn 2024-05-23 1531 NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = off;
299603e8370a93 Jerry Chu 2013-12-11 1532
2c804d0f8fc779 Eric Dumazet 2014-09-30 1533 /* Note : No need to call skb_gro_postpull_rcsum() here,
2c804d0f8fc779 Eric Dumazet 2014-09-30 1534 * as we already checked checksum over ipv4 header was 0
2c804d0f8fc779 Eric Dumazet 2014-09-30 1535 */
86911732d3996a Herbert Xu 2009-01-29 1536 skb_gro_pull(skb, sizeof(*iph));
86911732d3996a Herbert Xu 2009-01-29 1537 skb_set_transport_header(skb, skb_gro_offset(skb));
73cc19f1556b95 Herbert Xu 2008-12-15 1538
028e0a4766844e Paolo Abeni 2018-12-14 1539 pp = indirect_call_gro_receive(tcp4_gro_receive, udp4_gro_receive,
028e0a4766844e Paolo Abeni 2018-12-14 1540 ops->callbacks.gro_receive, head, skb);
73cc19f1556b95 Herbert Xu 2008-12-15 1541
73cc19f1556b95 Herbert Xu 2008-12-15 1542 out:
5f114163f2f5eb Steffen Klassert 2017-02-15 @1543 skb_gro_flush_final(skb, pp, flush);
73cc19f1556b95 Herbert Xu 2008-12-15 1544
73cc19f1556b95 Herbert Xu 2008-12-15 1545 return pp;
73cc19f1556b95 Herbert Xu 2008-12-15 1546 }
73cc19f1556b95 Herbert Xu 2008-12-15 1547
:::::: The code at line 1503 was first introduced by commit
:::::: a9e050f4e7f9d36afe0dcc0bddba864ee442715e net: tcp: GRO should be ECN friendly
:::::: TO: Eric Dumazet <edumazet@google.com>
:::::: CC: David S. Miller <davem@davemloft.net>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2026-04-08 2:53 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-04-08 2:32 [deller-parisc:for-next 2/9] net/ipv4/af_inet.c:1503:6: warning: variable 'flush' is used uninitialized whenever 'if' condition is true kernel test robot
-- strict thread matches above, loose matches on Subject: below --
2026-04-08 2:53 kernel test robot
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox