[mynewt-nimble] 02/06: nimble/mesh: Fix null pointer access on prov_init

[ja...@apache.org]

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janc pushed a commit to branch 1_2_0_dev
in repository https://gitbox.apache.org/repos/asf/mynewt-nimble.git

commit d751f05139a05463e74f733159c1eacdd566b803
Author: Michał Narajowski <mi...@codecoup.pl>
AuthorDate: Wed Jul 17 11:59:24 2019 +0200

    nimble/mesh: Fix null pointer access on prov_init
    
    During bt_mesh_prov_init() a bt_mesh_proxy_get_buf() function
    is called that returns a buffer that tries to initialize
    unallocated buffer. With this patch we just return NULL
    here, and then the buffer is allocated after Proxy is initialized.
---
 nimble/host/mesh/src/proxy.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/nimble/host/mesh/src/proxy.c b/nimble/host/mesh/src/proxy.c
index 1465940..609da54 100644
--- a/nimble/host/mesh/src/proxy.c
+++ b/nimble/host/mesh/src/proxy.c
@@ -681,7 +681,9 @@ struct os_mbuf *bt_mesh_proxy_get_buf(void)
 {
 	struct os_mbuf *buf = clients[0].buf;
 
-	net_buf_simple_init(buf, 0);
+	if (buf != NULL) {
+		net_buf_simple_init(buf, 0);
+	}
 
 	return buf;
 }