Subject: linux-next: build warning after merge of the net-next tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 8 Jul 2019 13:25:10 +1000

Hi all,

After merging the net-next tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

In file included from include/linux/bitmap.h:9,
                 from include/linux/cpumask.h:12,
                 from arch/x86/include/asm/cpumask.h:5,
                 from arch/x86/include/asm/msr.h:11,
                 from arch/x86/include/asm/processor.h:21,
                 from arch/x86/include/asm/cpufeature.h:5,
                 from arch/x86/include/asm/thread_info.h:53,
                 from include/linux/thread_info.h:38,
                 from arch/x86/include/asm/preempt.h:7,
                 from include/linux/preempt.h:78,
                 from include/linux/spinlock.h:51,
                 from include/linux/seqlock.h:36,
                 from include/linux/time.h:6,
                 from include/linux/ktime.h:24,
                 from include/linux/timer.h:6,
                 from include/linux/netdevice.h:24,
                 from include/linux/if_vlan.h:10,
                 from drivers/net/ethernet/mellanox/mlx5/core/en.h:35,
                 from drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c:5:
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c: In function 'mlx5e_ktls_tx_handle_ooo':
include/linux/string.h:400:9: warning: 'rec_seq' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return __builtin_memcmp(p, q, size);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c:240:8: note: 'rec_seq' was declared here
  char *rec_seq;
        ^~~~~~~

Introduced by commit

  d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support")

-- 
Cheers,
Stephen Rothwell