last executing test programs: 1.238049183s ago: executing program 3 (id=4): accept4(0xffffffffffffffff, 0x0, 0x0, 0x10000000) ioctl$DIOCGETRULES(0xffffffffffffffff, 0xcbe04406, &(0x7f0000002500)="1a96edd80763523d70657775757adee398") sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) mkdir(0x0, 0x0) r0 = socket$inet_sctp(0x2, 0x1, 0x84) bind$inet(r0, &(0x7f0000000280)={0x10, 0x2, 0x3}, 0x10) openat$filemon(0xffffff9c, &(0x7f00000002c0), 0x0, 0x0) freebsd10_pipe(&(0x7f0000000100)) open(&(0x7f0000000480)='./file0\x00', 0x0, 0xe) socket$inet_sctp(0x2, 0x1, 0x84) getsockopt$inet_sctp_SCTP_PEER_ADDR_THLDS(0xffffffffffffffff, 0x84, 0x23, 0x0, &(0x7f0000000000)) profil(0x0, 0x0, 0x0, 0x0) r1 = socket$inet_sctp(0x2, 0x1, 0x84) setsockopt$inet_sctp_SCTP_INITMSG(r1, 0x84, 0x3, &(0x7f0000000340)={0x8003}, 0x8) rfork(0x7010) sync() open(0x0, 0x0, 0x0) r2 = socket$inet_sctp(0x2, 0x5, 0x84) setsockopt$inet_sctp_SCTP_CONNECT_X(r2, 0x84, 0x8007, 0x0, &(0x7f00000002c0)) r3 = socket$inet6_sctp(0x1c, 0x5, 0x84) bind(r3, &(0x7f0000000000)=@in6={0x1c, 0x1c, 0x2, 0x0, @empty}, 0x1c) connect$inet(r1, &(0x7f0000000140)={0x10, 0x2, 0x3, @rand_addr=0xff}, 0x10) 1.235278554s ago: executing program 0 (id=1): r0 = socket$inet_sctp(0x2, 0x5, 0x84) connect$inet(r0, &(0x7f0000000140)={0x10, 0x2, 0x0, @remote={0xac, 0x14, 0x0}}, 0x10) r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r1, 0x84, 0x105, 0x0, &(0x7f0000001700)) r2 = socket(0x0, 0x0, 0x0) setsockopt$inet6_IPV6_HOPOPTS(r2, 0x29, 0x31, 0x0, 0x28) sendto$inet6(0xffffffffffffffff, &(0x7f0000000600), 0x0, 0x0, &(0x7f0000000080)={0x1c, 0x1c, 0x1, 0x0, @rand_addr="fee3a38e5cac1c51deba3c6b07a430a0"}, 0x1c) r3 = kqueue() kevent(r3, &(0x7f0000000040)=[{0x0, 0xfffffffffffffff9, 0x9, 0x8, 0x0, 0x0, [0x0, 0x0, 0x7, 0x40000000000000]}], 0x1, 0x0, 0x0, 0x0) syz_emit_ethernet(0x42, 0x0) r4 = socket$inet_sctp(0x2, 0x5, 0x84) r5 = socket$inet_sctp(0x2, 0x5, 0x84) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r5, 0x84, 0x28, &(0x7f0000000280)={0x1, [0x0]}, &(0x7f00000002c0)=0x8) setsockopt$inet_sctp_SCTP_CONTEXT(r4, 0x84, 0x1a, &(0x7f0000000180)={r6}, 0x8) socket$inet6_sctp(0x1c, 0x1, 0x84) socket$inet6_sctp(0x1c, 0x1, 0x84) r7 = socket(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r7, 0x6, 0x2000, &(0x7f0000000080)={'bbr\x00'}, 0x24) setsockopt$inet_tcp_int(r7, 0x6, 0x1, &(0x7f0000000040)=0x7, 0x4) rfork(0x85000) 1.234928274s ago: executing program 1 (id=2): r0 = socket$inet_sctp(0x2, 0x5, 0x84) connect$inet(r0, &(0x7f0000000140)={0x10, 0x2, 0x0, @remote={0xac, 0x14, 0x0}}, 0x10) r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r1, 0x84, 0x105, 0x0, &(0x7f0000001700)) socket(0x0, 0x0, 0x0) sendto(0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f0000000080)=@in6={0x1c, 0x1c, 0x3, 0x800000, @empty}, 0x1c) sendto$inet6(0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f0000000080)={0x1c, 0x1c, 0x1, 0x0, @rand_addr="fee3a38e5cac1c51deba3c6b07a430a0"}, 0x1c) r2 = kqueue() kevent(r2, 0x0, 0x0, 0x0, 0x0, 0x0) syz_emit_ethernet(0x42, 0x0) r3 = socket$inet_sctp(0x2, 0x5, 0x84) r4 = socket$inet_sctp(0x2, 0x5, 0x84) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r4, 0x84, 0x28, &(0x7f0000000280)={0x1, [0x0]}, &(0x7f00000002c0)=0x8) setsockopt$inet_sctp_SCTP_CONTEXT(r3, 0x84, 0x1a, &(0x7f0000000180)={r5}, 0x8) socket$inet6_sctp(0x1c, 0x1, 0x84) socket$inet6_sctp(0x1c, 0x1, 0x84) r6 = socket(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r6, 0x6, 0x2000, &(0x7f0000000080)={'bbr\x00'}, 0x24) setsockopt$inet_tcp_int(r6, 0x6, 0x1, &(0x7f0000000040), 0x4) connect$inet(r6, &(0x7f00000000c0)={0x34, 0x2, 0x2, @rand_addr=0xfffffffe}, 0x10) rfork(0x85000) 1.234604942s ago: executing program 2 (id=3): connect$inet(0xffffffffffffffff, 0x0, 0x0) r0 = socket$inet6_sctp(0x1c, 0x1, 0x84) bind(r0, &(0x7f0000000000)=@in6={0x1c, 0x1c, 0x3, 0x0, @loopback}, 0x1c) connect$inet6(r0, &(0x7f0000000080)={0x1c, 0x1c, 0x3, 0x0, @loopback}, 0x1c) getsockopt$inet6_sctp_SCTP_PARTIAL_DELIVERY_POINT(r0, 0x84, 0x11, &(0x7f00000000c0), &(0x7f0000000d80)=0x4) 1.23392153s ago: executing program 2 (id=5): setsockopt$inet_MCAST_LEAVE_GROUP(0xffffffffffffffff, 0x0, 0x51, &(0x7f0000000500)={0x18b, {{0x10, 0x2, 0x1, @multicast2}}}, 0x84) r0 = kqueue() kevent(r0, &(0x7f0000000040)=[{0x0, 0xfffffffffffffff9, 0x9, 0x8, 0xe8c1, 0x80000000, [0x40]}], 0x1, 0x0, 0x0, 0x0) r1 = socket(0x1c, 0x1, 0x0) aio_write(0x0) openat$ptmx(0xffffffffffffff9c, &(0x7f0000000f80), 0x0, 0x0) socket$inet6_tcp(0x1c, 0x1, 0x0) getsockopt$inet_sctp_SCTP_RECVRCVINFO(r1, 0x84, 0x1f, &(0x7f0000000080), &(0x7f00000000c0)=0x4) r2 = socket(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r2, 0x6, 0x2000, 0x0, 0x0) setsockopt$inet_tcp_int(r2, 0x6, 0x22, 0x0, 0x0) connect$inet(r2, &(0x7f0000000240)={0x10, 0x2, 0x2, @remote={0xac, 0x14, 0x0}}, 0x10) shutdown(0xffffffffffffffff, 0x0) socket$inet6_sctp(0x1c, 0x0, 0x84) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(0xffffffffffffffff, 0x84, 0x28, 0x0, 0x0) socket$inet_sctp(0x2, 0x1, 0x84) getsockopt$inet_sctp_SCTP_DEFAULT_SEND_PARAM(0xffffffffffffffff, 0x84, 0xa, &(0x7f0000000140), &(0x7f0000000180)=0x20) mincore(&(0x7f0000013000/0x4000)=nil, 0x4000, 0x0) kmq_open(0x0, 0x0, 0x0, 0x0) r3 = socket$inet_sctp(0x2, 0x1, 0x84) setsockopt$inet_sctp_SCTP_EVENTS(r3, 0x84, 0xc, &(0x7f0000000000)={0x0, 0xd7, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0xe, 0x8c, 0x8}, 0xb) 1.232713487s ago: executing program 1 (id=6): ioctl$DIOCGETRULES(0xffffffffffffffff, 0xcbe04406, &(0x7f0000002500)="1a96edd80763523d70657775757adee398") sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) mkdir(0x0, 0x0) r0 = socket$inet_sctp(0x2, 0x1, 0x84) bind$inet(r0, &(0x7f0000000280)={0x10, 0x2, 0x3}, 0x10) freebsd10_pipe(&(0x7f0000000100)) open(&(0x7f0000000480)='./file0\x00', 0x0, 0xe) r1 = socket$inet_sctp(0x2, 0x1, 0x84) sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x100, 0x0, 0x0) getsockopt$inet_sctp_SCTP_PEER_ADDR_THLDS(r1, 0x84, 0x23, &(0x7f0000000140)={@in6={{0x1c, 0x1c, 0x1, 0x0, @ipv4={'\x00', '\xff\xff', @rand_addr=0x76}, 0x486}}, 0x0, 0x9a, 0x49c5}, &(0x7f0000000000)=0x90) profil(0x0, 0x0, 0x0, 0x0) r2 = socket$inet_sctp(0x2, 0x1, 0x84) setsockopt$inet_sctp_SCTP_INITMSG(r2, 0x84, 0x3, &(0x7f0000000340)={0x8003}, 0x8) rfork(0x7010) socket$inet_sctp(0x2, 0x5, 0x84) r3 = socket$inet6_sctp(0x1c, 0x5, 0x84) connect$inet6(r3, &(0x7f0000000180)={0xfffffffffffffe3d, 0x1c, 0x2, 0x0, @local={0xfe, 0x80, '\x00', 0x0}}, 0x1c) sendmsg$inet6_sctp(r3, &(0x7f0000000040)={&(0x7f00000000c0)=@in6={0x1c, 0x1c, 0x0, 0x0, @local={0xfe, 0x80, '\x00', 0x0}, 0x6}, 0x1c, &(0x7f0000000140)=[{0x0}, {&(0x7f0000000300)="3634fb0c67dc3430f85536d1b958467de732e3d6779a8f56730a319e83cf5a37810dfe3727bc6fec311275a86ba13dbb0cc600628e5d2cc51d3084194c11b76aa054059fb977c24ff336f5332b4c7cf50288c8b77bfcbb3b10adba45189c27844797c73a4a0b015f41479f305dbeb8cd8b2d66c15b17c16da5e60c5c52448d491be46f1a7f7998b1e7ca703ef4adf44859c3344a7ebb7d0ece986878d487e43e5cb9a7a5fb122f02868ceeac81df03a7a22b0c124d593abe37b7497c1d6dcf2d5cc484976d677f8fd83e90a3d7435789c536bb", 0xd3}], 0x2, 0x0, 0x0, 0x18c}, 0xd) 509.002456ms ago: executing program 1 (id=7): setsockopt$inet_MCAST_LEAVE_GROUP(0xffffffffffffffff, 0x0, 0x51, &(0x7f0000000500)={0x18b, {{0x10, 0x2, 0x1, @multicast2}}}, 0x84) r0 = kqueue() kevent(r0, &(0x7f0000000040)=[{0x0, 0xfffffffffffffff9, 0x9, 0x8, 0xe8c1, 0x80000000, [0x40]}], 0x1, 0x0, 0x0, 0x0) r1 = socket(0x1c, 0x1, 0x0) aio_write(0x0) openat$ptmx(0xffffffffffffff9c, &(0x7f0000000f80), 0x0, 0x0) socket$inet6_tcp(0x1c, 0x1, 0x0) getsockopt$inet_sctp_SCTP_RECVRCVINFO(r1, 0x84, 0x1f, &(0x7f0000000080), &(0x7f00000000c0)=0x4) r2 = socket(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r2, 0x6, 0x2000, &(0x7f0000000300)={'rack\x00'}, 0x24) setsockopt$inet_tcp_int(r2, 0x6, 0x0, 0x0, 0x0) connect$inet(r2, &(0x7f0000000240)={0x10, 0x2, 0x2, @remote={0xac, 0x14, 0x0}}, 0x10) shutdown(0xffffffffffffffff, 0x0) socket$inet6_sctp(0x1c, 0x0, 0x84) socket$inet_sctp(0x2, 0x1, 0x84) 0s ago: executing program 3 (id=8): r0 = socket$inet_sctp(0x2, 0x5, 0x84) connect$inet(r0, &(0x7f0000000140)={0x10, 0x2, 0x0, @remote={0xac, 0x14, 0x0}}, 0x10) r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r1, 0x84, 0x105, 0x0, &(0x7f0000001700)) setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x31, 0x0, 0x28) sendto(0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f0000000080)=@in6={0x1c, 0x1c, 0x3, 0x800000, @empty}, 0x1c) sendto$inet6(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0) r2 = kqueue() kevent(r2, &(0x7f0000000040)=[{0x0, 0xfffffffffffffff9, 0x9, 0x8, 0x0, 0x0, [0x0, 0x0, 0x7, 0x40000000000000]}], 0x1, 0x0, 0x0, 0x0) syz_emit_ethernet(0x42, 0x0) socket$inet_sctp(0x2, 0x5, 0x84) r3 = socket$inet_sctp(0x2, 0x5, 0x84) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r3, 0x84, 0x28, &(0x7f0000000280)={0x1, [0x0]}, &(0x7f00000002c0)=0x8) socket$inet6_sctp(0x1c, 0x1, 0x84) socket$inet6_sctp(0x1c, 0x1, 0x84) r4 = socket(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r4, 0x6, 0x2000, &(0x7f0000000080)={'bbr\x00'}, 0x24) setsockopt$inet_tcp_int(r4, 0x6, 0x1, &(0x7f0000000040)=0x7, 0x4) connect$inet(r4, &(0x7f00000000c0)={0x34, 0x2, 0x2, @rand_addr=0xfffffffe}, 0x10) sendmsg$inet6_sctp(r4, &(0x7f00000002c0)={&(0x7f0000000280)=@in={0x10, 0x2, 0x1, @multicast2}, 0x10, &(0x7f0000000100)=[{&(0x7f00000005c0)="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", 0x186}], 0x1, 0x0, 0x0, 0x81}, 0x0) rfork(0x85000) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.0.79' (ED25519) to the list of known hosts. Expensive callout(9) function: 0xffffffff8142f140(0xfffffe006daf36e0) 0.089254550 s FreeBSD/amd64 (ci-freebsd-main-7.c.syzkaller.internal) (ttyu0) login: if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 SYZFAIL: failed to send rpc if_delmulti_locked: detaching ifnet instance 0xfffffe0058546800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546800 fd=3 want=5144 sent=0 n=-1 (errno 32: Broken pipe) if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 Aug 1 07:34:27 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 ci-freebsd-main-if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 7 dhclient[821]: receive_packet failed on tap0: Device not configured Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: ioctl(SIOCGIFFLAGS) on tap0: Operation not permitted Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: Interface tap0 no longer appears valid. Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: No live interfaces to poll on - exiting. Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: exiting. Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: connection closed Aug 1 07:34:27 ci-freebsd-main-7 dhclient[821]: exiting. if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058546800 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000 if_delmulti_locked: detaching ifnet instance 0xfffffe00079fb000