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From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: "Eric Blake" <eblake@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Dmitry Fleytman" <dmitry@daynix.com>,
	"Jason Wang" <jasowang@redhat.com>
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	qemu-devel@nongnu.org, qemu-trivial@nongnu.org
Subject: [Qemu-trivial] [PATCH for 2.10 10/35] net/eth: fix incorrect check of iov_to_buf() return value
Date: Mon, 24 Jul 2017 15:27:26 -0300	[thread overview]
Message-ID: <20170724182751.18261-11-f4bug@amsat.org> (raw)
In-Reply-To: <20170724182751.18261-1-f4bug@amsat.org>

So we have sizeof(struct in6_address) != sizeof(uintptr_t)
and Clang > Coverity on this, see 4555ca6816c :)

net/eth.c:426:30: warning: The code calls sizeof() on a pointer type. This can produce an unexpected result
        return bytes_read == sizeof(dst_addr);
                             ^     ~~~~~~~~~~
net/eth.c:475:34: warning: The code calls sizeof() on a pointer type. This can produce an unexpected result
            return bytes_read == sizeof(src_addr);
                                 ^     ~~~~~~~~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 net/eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/eth.c b/net/eth.c
index 5b9ba26a56..ae5d881aae 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -423,7 +423,7 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags,
                                 rthdr_offset + sizeof(*ext_hdr),
                                 dst_addr, sizeof(*dst_addr));
 
-        return bytes_read == sizeof(dst_addr);
+        return bytes_read == sizeof(*dst_addr);
     }
 
     return false;
@@ -472,7 +472,7 @@ _eth_get_rss_ex_src_addr(const struct iovec *pkt, int pkt_frags,
                                     opt_offset + sizeof(opthdr),
                                     src_addr, sizeof(*src_addr));
 
-            return bytes_read == sizeof(src_addr);
+            return bytes_read == sizeof(*src_addr);
         }
 
         opt_offset += optlen;
-- 
2.13.3



  parent reply	other threads:[~2017-07-24 18:28 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-24 18:27 [Qemu-trivial] [PATCH for 2.10 00/35] fix bugs reported by Clang Static Analyzer Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 01/35] tests: add missing dependency to build QTEST_QEMU_BINARY Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 02/35] loader: check get_image_size() return value Philippe Mathieu-Daudé
2017-07-24 18:38   ` Eric Blake
2017-07-24 20:59     ` [Qemu-trivial] [Qemu-devel] " Alistair Francis
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 03/35] thunk: check nb_fields is valid before continuing Philippe Mathieu-Daudé
2017-07-24 18:37   ` Eric Blake
2017-07-26 22:48     ` Philippe Mathieu-Daudé
2017-07-24 21:16   ` [Qemu-trivial] [Qemu-devel] " Peter Maydell
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 05/35] nbd: fix memory leak in nbd_opt_go() Philippe Mathieu-Daudé
2017-07-24 18:41   ` Eric Blake
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 06/35] qcow2: remove inconsistent check Philippe Mathieu-Daudé
2017-07-24 18:42   ` Eric Blake
2017-07-25 15:36     ` [Qemu-trivial] [Qemu-devel] " Paolo Bonzini
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 07/35] qcow2: fix null pointer dereference Philippe Mathieu-Daudé
2017-07-24 18:46   ` Eric Blake
2017-07-25  1:44     ` Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 08/35] " Philippe Mathieu-Daudé
2017-07-24 18:52   ` Eric Blake
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 09/35] ui/vnc: fix leak of SocketAddress ** Philippe Mathieu-Daudé
2017-07-25  8:37   ` [Qemu-trivial] [Qemu-devel] " Daniel P. Berrange
2017-07-24 18:27 ` Philippe Mathieu-Daudé [this message]
2017-07-26  9:51   ` [Qemu-trivial] [PATCH for 2.10 10/35] net/eth: fix incorrect check of iov_to_buf() return value Dmitry Fleytman
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 12/35] vfio/platform: fix use of freed memory Philippe Mathieu-Daudé
2017-07-25 15:37   ` [Qemu-trivial] [Qemu-devel] " Paolo Bonzini
2017-07-26 17:43   ` [Qemu-trivial] " Alex Williamson
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 13/35] vfio/pci: " Philippe Mathieu-Daudé
2017-07-25 15:38   ` [Qemu-trivial] [Qemu-devel] " Paolo Bonzini
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 14/35] vfio/ccw: fix incorrect malloc() size Philippe Mathieu-Daudé
2017-07-25  7:20   ` Cornelia Huck
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 15/35] usb: correctly handle Zero Length Packets Philippe Mathieu-Daudé
2018-05-29 14:22   ` Philippe Mathieu-Daudé
2018-05-30  6:16     ` Gerd Hoffmann
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 19/35] usb/dev-mtp: fix use of uninitialized variable Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 20/35] arm/boot: fix undefined instruction on secondary smp cpu bootloader Philippe Mathieu-Daudé
2017-07-24 21:06   ` Peter Maydell
2017-07-26 23:00     ` [Qemu-trivial] [Qemu-devel] " Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 22/35] arm/vexpress: fix potential memory leak Philippe Mathieu-Daudé
2017-07-24 21:11   ` Peter Maydell
2017-07-24 21:45     ` Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 23/35] m68k/translate: fix incorrect copy/paste Philippe Mathieu-Daudé
2017-07-24 18:54   ` Laurent Vivier
2017-07-24 19:01     ` Richard Henderson
2017-07-24 19:19       ` [Qemu-trivial] [Qemu-devel] " Philippe Mathieu-Daudé
2017-07-24 19:20         ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 24/35] linux-user/sh4: fix incorrect memory write Philippe Mathieu-Daudé
2017-07-24 18:59   ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 25/35] linux-user: extract is_error() out of syscall.c Philippe Mathieu-Daudé
2017-07-24 19:14   ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 26/35] linux-user: use is_error() to avoid warnings and make the code clearer Philippe Mathieu-Daudé
2017-07-24 19:16   ` Laurent Vivier
2018-05-29 14:25     ` [Qemu-trivial] [Qemu-devel] " Philippe Mathieu-Daudé
2018-05-29 15:19       ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 27/35] syscall: fix dereference of undefined pointer Philippe Mathieu-Daudé
2017-07-24 19:33   ` Laurent Vivier
2017-07-25  5:34     ` Philippe Mathieu-Daudé
2017-07-24 21:26   ` [Qemu-trivial] [Qemu-devel] " Peter Maydell
2017-07-25  7:25     ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 29/35] syscall: fix out-of-bound memory access Philippe Mathieu-Daudé
2017-07-24 19:41   ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 30/35] syscall: fix use of uninitialized values Philippe Mathieu-Daudé
2017-07-24 19:51   ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 31/35] syscall: replace strcpy() by g_strlcpy() Philippe Mathieu-Daudé
2017-07-24 19:28   ` Laurent Vivier
2018-05-29 14:19     ` Philippe Mathieu-Daudé
2018-05-29 15:22       ` Laurent Vivier
2017-07-24 18:27 ` [Qemu-trivial] [PATCH for 2.10 32/35] timer/pxa2xx: silent warning about out-of-bound memory access Philippe Mathieu-Daudé
2017-07-24 21:01   ` [Qemu-trivial] [Qemu-devel] " Peter Maydell
2017-07-24 21:51     ` Philippe Mathieu-Daudé
2017-07-24 18:27 ` [Qemu-trivial] [RFC PATCH for 2.10 35/35] script to run docker image Philippe Mathieu-Daudé
2017-07-25 14:12   ` Alex Bennée
2017-07-25 14:41     ` Philippe Mathieu-Daudé
2017-07-25 15:03       ` Alex Bennée
2017-07-25 15:17         ` Philippe Mathieu-Daudé
2017-07-24 21:27 ` [Qemu-trivial] [PATCH for 2.10 00/35] fix bugs reported by Clang Static Analyzer Peter Maydell

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