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From: Andrii Nakryiko <andriin@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
	<daniel@iogearbox.net>
Cc: <andriin@fb.com>
Subject: [PATCH bpf-next] bpf: fix cast to pointer from integer of different size warning
Date: Thu, 10 Oct 2019 21:29:25 -0700	[thread overview]
Message-ID: <20191011042925.731290-1-andriin@fb.com> (raw)

Fix "warning: cast to pointer from integer of different size" when
casting u64 addr to void *.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
---
 kernel/bpf/verifier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index b818fed3208d..d3446f018b9a 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -2753,7 +2753,7 @@ static int bpf_map_direct_read(struct bpf_map *map, int off, int size, u64 *val)
 	err = map->ops->map_direct_value_addr(map, &addr, off);
 	if (err)
 		return err;
-	ptr = (void *)addr + off;
+	ptr = (void *)(long)addr + off;
 
 	switch (size) {
 	case sizeof(u8):
-- 
2.17.1


             reply	other threads:[~2019-10-11  4:29 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-11  4:29 Andrii Nakryiko [this message]
2019-10-11  5:15 ` [Potential Spoof] [PATCH bpf-next] bpf: fix cast to pointer from integer of different size warning Martin Lau
2019-10-11 17:18   ` Andrii Nakryiko

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