{"id":803832,"url":"http://patchwork.ozlabs.org/api/1.2/patches/803832/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/1503283202-11909-2-git-send-email-trini@konsulko.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1503283202-11909-2-git-send-email-trini@konsulko.com>","list_archive_url":null,"date":"2017-08-21T02:40:02","name":"[U-Boot,2/2] net: nfs: Correct type of rpc_t->u.reply->data","commit_ref":null,"pull_url":null,"state":"rejected","archived":false,"hash":"aece6352d27284bc31de2deecdbabdb78484f549","submitter":{"id":65875,"url":"http://patchwork.ozlabs.org/api/1.2/people/65875/?format=json","name":"Tom Rini","email":"trini@konsulko.com"},"delegate":{"id":6337,"url":"http://patchwork.ozlabs.org/api/1.2/users/6337/?format=json","username":"jhersh","first_name":"Joe","last_name":"Hershberger","email":"joe.hershberger@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/1503283202-11909-2-git-send-email-trini@konsulko.com/mbox/","series":[],"comments":"http://patchwork.ozlabs.org/api/patches/803832/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/803832/checks/","tags":{},"related":[],"headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>"},"content":"In rpc_t we declare data to be a uint8_t of size 2048, for a final size\nof 2048.  We also however declare the reply part of the union to have a\nuint32_t data field of NFS_READ_SIZE (1024) for a final size of\n4096+24=4120 and an overrun.  Expand the comment above the struct to\nnote that if NFS_READ_SIZE is increased then the data buf must also be\nincreased and correct the declaration to be uint8_t.\n\nReported-by: Coverity (CID: 152888)\nCc: Joe Hershberger <joe.hershberger@ni.com>\nSigned-off-by: Tom Rini <trini@konsulko.com>\n---\n net/nfs.h | 7 ++++---\n 1 file changed, 4 insertions(+), 3 deletions(-)","diff":"diff --git a/net/nfs.h b/net/nfs.h\nindex 1aa06e8fb90f..b23b4088d825 100644\n--- a/net/nfs.h\n+++ b/net/nfs.h\n@@ -39,8 +39,9 @@\n /*\n  * Block size used for NFS read accesses.  A RPC reply packet (including  all\n  * headers) must fit within a single Ethernet frame to avoid fragmentation.\n- * However, if CONFIG_IP_DEFRAG is set, a bigger value could be used.  In any\n- * case, most NFS servers are optimized for a power of 2.\n+ * However, if CONFIG_IP_DEFRAG is set, a bigger value could be used, so long\n+ * as rpc_t->u->data is incrased to match. In any case, most NFS servers are\n+ * optimized for a power of 2.\n  */\n #define NFS_READ_SIZE\t1024\t/* biggest power of two that fits Ether frame */\n \n@@ -73,7 +74,7 @@ struct rpc_t {\n \t\t\tuint32_t verifier;\n \t\t\tuint32_t v2;\n \t\t\tuint32_t astatus;\n-\t\t\tuint32_t data[NFS_READ_SIZE];\n+\t\t\tuint8_t data[NFS_READ_SIZE];\n \t\t} reply;\n \t} u;\n } __attribute__((packed));\n","prefixes":["U-Boot","2/2"]}