From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Yongjun Date: Tue, 10 Jun 2008 07:31:15 +0000 Subject: [PATCH] DCCP: Fix double free of skb which may cause kernel panic Message-Id: <484E2DC3.1030407@cn.fujitsu.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="macroman" Content-Transfer-Encoding: base64 To: dccp@vger.kernel.org U2luY2Ugc2tiIHdpbGwgYmUgZnJlZSBhZnRlciBzZW5kIHJlc2V0LCBrZnJlZV9za2Ioc2tiKSBp biAKZGNjcF92Nl9jdGxfc2VuZF9yZXNldCgpIHdpbGwgY2F1c2Uga2VybmVsIHBhbmljLgoKc3Rh dGljIGludCBkY2NwX3Y2X2RvX3JjdihzdHJ1Y3Qgc29jayAqc2ssIHN0cnVjdCBza19idWZmICpz a2IpCi4uLnNuaXAuLi4KcmVzZXQ6CiAgICAgICAgIGRjY3BfdjZfY3RsX3NlbmRfcmVzZXQoc2ss IHNrYik7CmRpc2NhcmQ6CiAgICAgICAgIGlmIChvcHRfc2tiICE9IE5VTEwpCiAgICAgICAgICAg ICAgICAgX19rZnJlZV9za2Iob3B0X3NrYik7CiAgICAgICAga2ZyZWVfc2tiKHNrYik7CiAgICAg ICAgcmV0dXJuIDA7Cn0KClRoaXMgcGF0Y2ggZml4IHRoaXMgcHJvYmxlbS4KClBpZDogMCwgY29t bTogc3dhcHBlciBOb3QgdGFpbnRlZCAoMi42LjI2LXJjMiAjMSkKRUlQOiAwMDYwOls8YzA1YWNk YWY+XSBFRkxBR1M6IDAwMDEwMjA2IENQVTogMApFSVAgaXMgYXQga2ZyZWVfc2tiKzB4OS8weDMw CkVBWDogMDAwMDJmZGUgRUJYOiBjNzMwNmU4MCBFQ1g6IGM3ODAxMDgwIEVEWDogMDAwMDJmZGUK RVNJOiBjNzk4MzY4MCBFREk6IGM3MmQ5ODAwIEVCUDogYzA3NWFkZmMgRVNQOiBjMDc1YWRmYwog RFM6IDAwN2IgRVM6IDAwN2IgRlM6IDAwZDggR1M6IDAwMDAgU1M6IDAwNjgKUHJvY2VzcyBzd2Fw cGVyIChwaWQ6IDAsIHRpwDc1YTAwMCB0YXNrwDZkZjNhMCB0YXNrLnRpwDcxNDAwMCkKU3RhY2s6 IGMwNzVhZTA4IGM4YTI1OWQ4IGM3YTBmODQ4IGMwNzVhZTM4IGM4YTI2MGZjIGM3OTgzNjgwIGM3 MmQ5ODAwIGM3MmQ5YjkwCiAgICAgICA2NDAwMDAwMCBjNzk4MzZhMCBjNzMwNmU4MCA4Y2YyNDM3 ZiBjN2EwZjg0OCBjNzk4MzY4MCBjNzJkOTgwMCBjMDc1YWU3OAogICAgICAgYzg5ZTZjNzggYzc5 ODM2ODAgYzcyZDk4MDAgMGE4MDQ1MDAgYzc5ODM2YTAgMGMwMTE5MDggZjI0MjA2Y2MgYzQ2YzM2 NjAKQ2FsbCBUcmFjZToKIFs8YzhhMjU5ZDg+XSA/IGRjY3BfdjZfcmVxc2tfZGVzdHJ1Y3Rvcisw eDFmLzB4MjIgW2RjY3BfaXB2Nl0KIFs8YzhhMjYwZmM+XSA/IGRjY3BfdjZfY29ubl9yZXF1ZXN0 KzB4MjQzLzB4MjdkIFtkY2NwX2lwdjZdCiBbPGM4OWU2Yzc4Pl0gPyBkY2NwX3Jjdl9zdGF0ZV9w cm9jZXNzKzB4M2QvMHg0YjUgW2RjY3BdCiBbPGM4YTI1OTc2Pl0gPyBkY2NwX3Y2X2RvX3Jjdisw eDEzMi8weDE3NSBbZGNjcF9pcHY2XQogWzxjMDViYjM1NT5dID8gc2tfZmlsdGVyKzB4NjYvMHg2 ZAogWzxjMDVhYjVjMj5dID8gc2tfcmVjZWl2ZV9za2IrMHgzMi8weDdjCiBbPGM4YTI2N2IzPl0g PyBkY2NwX3Y2X3JjdisweDJhNS8weDMyYSBbZGNjcF9pcHY2XQogWzxjOGVlMmVlMD5dID8gaXA2 X2lucHV0X2ZpbmlzaCsweDE1OC8weDI4MCBbaXB2Nl0KIFs8YzhlZTMwNGE+XSA/IGlwNl9pbnB1 dCsweDQyLzB4NDcgW2lwdjZdCiBbPGM4ZWUzMzU3Pl0gPyBpcHY2X3JjdisweDI3Yy8weDJjOSBb aXB2Nl0KIFs8YzA1YjEzMzY+XSA/IG5ldGlmX3JlY2VpdmVfc2tiKzB4MmUwLzB4MzQ5CiBbPGM4 OGYyYTEyPl0gPyBwY25ldDMyX3BvbGwrMHgzMzMvMHg2NmUgW3BjbmV0MzJdCiBbPGMwNDM4YWZh Pl0gPyBjbG9ja3NvdXJjZV93YXRjaGRvZysweDIxZS8weDIyZAogWzxjMDQwNDI4Yj5dID8gY29t bW9uX2ludGVycnVwdCsweDIzLzB4MjgKIFs8YzA1YjMwOGM+XSA/IG5ldF9yeF9hY3Rpb24rMHg4 Zi8weDE0NwogWzxjMDQyN2M1Yj5dID8gX19kb19zb2Z0aXJxKzB4NjQvMHhjZAogWzxjMDQwNTg5 OD5dID8gZG9fc29mdGlycSsweDU1LzB4ODgKIFs8YzA0MjdiZjU+XSA/IGlycV9leGl0KzB4Mzgv MHgzYQogWzxjMDQxMmI0Mj5dID8gc21wX2FwaWNfdGltZXJfaW50ZXJydXB0KzB4NzEvMHg3Zgog WzxjMDQwMjVlYj5dID8gZGVmYXVsdF9pZGxlKzB4MC8weDQyCiBbPGMwNDA0MzQ4Pl0gPyBhcGlj X3RpbWVyX2ludGVycnVwdCsweDI4LzB4MzAKIFs8YzA0MDI1ZWI+XSA/IGRlZmF1bHRfaWRsZSsw eDAvMHg0MgogWzxjMDQwMjYxOD5dID8gZGVmYXVsdF9pZGxlKzB4MmQvMHg0MgogWzxjMDQwMjU2 Nj5dID8gY3B1X2lkbGUrMHg4Yi8weDlmCiBbPGMwNjBjODlhPl0gPyByZXN0X2luaXQrMHg0ZS8w eDUwCiA9PT09PT09PT09PQoKU2lnbmVkLW9mZi1ieTogV2VpIFlvbmdqdW4gPHlqd2VpQGNuLmZ1 aml0c3UuY29tPgoKLS0tIGEvbmV0L2RjY3AvaXB2Ni5jCTIwMDgtMDUtMjkgMjI6Mjc6NTUuMDAw MDAwMDAwIC0wNDAwCisrKyBiL25ldC9kY2NwL2lwdjYuYwkyMDA4LTA2LTA1IDA0OjEzOjE4LjAw MDAwMDAwMCAtMDQwMApAQCAtMzMzLDggKzMzMyw2IEBAIHN0YXRpYyB2b2lkIGRjY3BfdjZfY3Rs X3NlbmRfcmVzZXQoc3RydWMKIAkJCXJldHVybjsKIAkJfQogCX0KLQotCWtmcmVlX3NrYihza2Ip OwogfQogCiBzdGF0aWMgc3RydWN0IHJlcXVlc3Rfc29ja19vcHMgZGNjcDZfcmVxdWVzdF9zb2Nr X29wcyA9IHsKCgoKCi0tClRvIHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBs aW5lICJ1bnN1YnNjcmliZSBkY2NwIiBpbgp0aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFqb3Jk b21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5r ZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0bWw=