Messages in this thread |  | | From | "David S. Miller" <> | Date | Thu, 24 May 2001 16:17:55 -0700 (PDT) | Subject | Re: [CHECKER] free bugs in 2.4.4 and 2.4.4-ac8 |
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Alan Cox writes: > > [BUG] seems possible --- or is some precondition guarenteed? > > /u2/engler/mc/oses/linux/2.4.4-ac8/net/ipv6/udp.c:438:udpv6_recvmsg: ERROR:FREE:453:438: WARN: Use-after-free of "skb"! set by 'kfree_skb':453 > > Looks right. Left for DaveM
It's wrong, in the MSG_PEEK case skb->users is incremented by skb_recv_datagram, so to truly get rid of it we do indeed need to unlink it from the receive_queue then free it twice :-)
Later, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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