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xsk: Fix clang build error in __xp_alloc 

Fix a build error with clang in __xp_alloc():

  [...]
  net/xdp/xsk_buff_pool.c:465:15: error: variable 'xskb' is uninitialized
  when used here [-Werror,-Wuninitialized]
                          xp_release(xskb);
                                     ^~~~

This is correctly detected by clang, but not gcc. In fact, the xp_release()
statement should not be there at all in the refactored code, just remove it.

Fixes: 94033cd8e7 ("xsk: Optimize for aligned case")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210929061403.8587-1-magnus.karlsson@gmail.com
This commit is contained in:
Magnus Karlsson 2021-09-29 08:14:03 +02:00 committed by Daniel Borkmann
parent 38261f369f
commit 3103836496
1 changed files with 0 additions and 1 deletions
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1
net/xdp/xsk_buff_pool.c
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@ -462,7 +462,6 @@ static struct xdp_buff_xsk *__xp_alloc(struct xsk_buff_pool *pool)
for (;;) {
if (!xskq_cons_peek_addr_unchecked(pool->fq, &addr)) {
pool->fq->queue_empty_descs++;
xp_release(xskb);
return NULL;
}