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[Qemu-devel] [PATCH] chardev-socket: remove useless if


From: Paolo Bonzini
Subject: [Qemu-devel] [PATCH] chardev-socket: remove useless if
Date: Tue, 20 Mar 2018 16:18:57 +0100

This trips Coverity, which believes the subsequent qio_channel_create_watch
can dereference a NULL pointer.  In reality, tcp_chr_connect's callers
all have s->ioc properly initialized, since they are all rooted at
tcp_chr_new_client.

Signed-off-by: Paolo Bonzini <address@hidden>
---
 chardev/char-socket.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index d057192ced..159e69c3b1 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -550,12 +550,10 @@ static void tcp_chr_connect(void *opaque)
         s->is_listen, s->is_telnet);
 
     s->connected = 1;
-    if (s->ioc) {
-        chr->gsource = io_add_watch_poll(chr, s->ioc,
-                                           tcp_chr_read_poll,
-                                           tcp_chr_read,
-                                           chr, chr->gcontext);
-    }
+    chr->gsource = io_add_watch_poll(chr, s->ioc,
+                                       tcp_chr_read_poll,
+                                       tcp_chr_read,
+                                       chr, chr->gcontext);
 
     s->hup_source = qio_channel_create_watch(s->ioc, G_IO_HUP);
     g_source_set_callback(s->hup_source, (GSourceFunc)tcp_chr_hup,
-- 
2.16.2




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