Messages in this thread Patch in this message | | | Date | Sat, 5 Jun 2004 22:43:34 +0200 | From | Olaf Hering <> | Subject | [PATCH] compat bug in sys_recvmsg, MSG_CMSG_COMPAT check missing |
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packet_recvmsg() gets the flags from the compat_sys_socketcall(), but it does not check for the active MSG_CMSG_COMPAT bit. As a result, it returns -EINVAL and makes the user rather unhappy
diff -purN linux-2.6.7-rc2-bk5.orig/net/packet/af_packet.c linux-2.6.7-rc2-bk5/net/packet/af_packet.c --- linux-2.6.7-rc2-bk5.orig/net/packet/af_packet.c 2004-06-05 09:34:48.000000000 +0200 +++ linux-2.6.7-rc2-bk5/net/packet/af_packet.c 2004-06-05 22:32:16.000000000 +0200 @@ -1037,7 +1037,7 @@ static int packet_recvmsg(struct kiocb * int copied, err; err = -EINVAL; - if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC)) + if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT)) goto out; #if 0 -- USB is for mice, FireWire is for men! sUse lINUX ag, nÜRNBERG - 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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