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0159583c3b
One of the root causes to reported "lost connection to test machine" is
when the egress network interface is being used as a multicast
interface:
setsockopt$inet6_MRT6_ADD_MIF(r0, 0x29, 0x66, &(0x7f0000000180)={0x2}, 0xc)
Prevent such syscalls from being generated by limiting the range of
allowed interface indices.
63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
# Copyright 2017 syzkaller project authors. All rights reserved.
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# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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include <sys/types.h>
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include <sys/param.h>
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include <sys/socket.h>
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include <netinet/in.h>
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include <net/route.h>
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include <netinet6/ip6_mroute.h>
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# include <compat/linux/common/linux_socket.h>
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include <sys/sockio.h>
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# IPv6 sockets
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resource sock_in6[sock]
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sockaddr_in6 {
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family const[AF_INET6, int16]
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port sock_port
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flow int32
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scope int32
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}
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socket$inet6(domain const[AF_INET6], type flags[socket_type], proto int8) sock_in6
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accept$inet6(fd sock_in6, peer ptr[out, sockaddr_in6, opt], peerlen ptr[inout, len[peer, int32]]) sock_in6
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bind$inet6(fd sock_in6, addr ptr[in, sockaddr_in6], addrlen len[addr])
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connect$inet6(fd sock_in6, addr ptr[in, sockaddr_in6], addrlen len[addr])
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sendto$inet6(fd sock_in6, buf buffer[in], len len[buf], f flags[send_flags], addr ptr[in, sockaddr_in6, opt], addrlen len[addr])
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recvfrom$inet6(fd sock_in6, buf buffer[out], len len[buf], f flags[recv_flags], addr ptr[in, sockaddr_in6, opt], addrlen len[addr])
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getsockname$inet6(fd sock_in6, addr ptr[out, sockaddr_in6], addrlen ptr[inout, len[addr, int32]])
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getpeername$inet6(fd sock_in6, peer ptr[out, sockaddr_in6], peerlen ptr[inout, len[peer, int32]])
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# Generic IPv6 options
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# Specific IPv6 options
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# TODO: IPV6_HOPOPTS, IPV6_RTHDRDSTOPTS, IPV6_RTHDR, IPV6_DSTOPTS
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# TODO: IPV6_PATHMTU
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# TODO: IP6T_SO_GET_REVISION_MATCH, IP6T_SO_GET_REVISION_TARGET
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setsockopt$inet6_MRT6_ADD_MIF(fd sock_in6, level const[IPPROTO_IPV6], optname const[MRT6_ADD_MIF], optval ptr[in, mif6ctl], optlen len[optval])
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setsockopt$inet6_MRT6_ADD_MFC(fd sock_in6, level const[IPPROTO_IPV6], optname const[MRT6_ADD_MFC], optval ptr[in, mf6cctl], optlen len[optval])
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setsockopt$inet6_MRT6_DEL_MFC(fd sock_in6, level const[IPPROTO_IPV6], optname const[MRT6_DEL_MFC], optval ptr[in, mf6cctl], optlen len[optval])
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mif6ctl {
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mif6c_mifi int16
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mif6c_flags flags[mif6c_flags, int8]
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vifc_threshold int8
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# Do not allow low interface indices since one of them is likely to be the
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# egress interface vio0 used on GCE instances during fuzzing.
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mif6c_pifi int16[4:0xffff]
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vifc_rate_limit int32
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}
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mif6c_flags = MIFF_REGISTER
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mf6cctl {
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mf6cc_origin sockaddr_in6
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mf6cc_mcastgrp sockaddr_in6
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mf6cc_parent int16
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mf6cc_ifset array[int32, 8]
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}
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