TTR_BACKEND_IDENTIFIER={0x6, 0xa, '^#'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}]}, 0x8c}, 0x1, 0x0, 0x0, 0x20000817}, 0x4004) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r6) r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r6) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f0000000000)={&(0x7f0000000080)={0x20, r7, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:44:45 executing program 5: unshare(0x400) unshare(0x40020480) [ 3368.314863] nbd: couldn't find a device at index 0 00:44:45 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) r5 = socket(0x29, 0x6, 0x5) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:45 executing program 2: r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) epoll_ctl$EPOLL_CTL_DEL(0xffffffffffffffff, 0x2, r0) socket$xdp(0x2c, 0x3, 0x0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_DEL(r2, 0x2, r0) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) unshare(0x4050000) 00:44:45 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = accept4(0xffffffffffffffff, &(0x7f00000001c0)=@ieee802154={0x24, @short}, &(0x7f0000000240)=0x80, 0x80800) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000280)={0xffffffffffffffff}) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000002c0)={0xffffffffffffffff}) (async) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) (async) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000300)={0x8c, 0x0, 0x200, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '^#'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}]}, 0x8c}, 0x1, 0x0, 0x0, 0x20000817}, 0x4004) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r6) (async) r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r6) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f0000000000)={&(0x7f0000000080)={0x20, r7, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) [ 3368.401549] nbd: must specify at least one socket [ 3368.466662] nbd: couldn't find a device at index 0 [ 3368.520026] nbd: must specify at least one socket 00:44:45 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) clock_gettime(0x0, &(0x7f0000000080)={0x0, 0x0}) pselect6(0x0, 0xfffffffffffffffd, &(0x7f0000000000)={0x0, 0xae0e, 0x6, 0x9, 0x9, 0xffa, 0x5, 0xaf6c}, &(0x7f0000000040)={0xbf, 0xee, 0x9, 0x1d, 0x6, 0x3f, 0x8000000000000, 0x7}, &(0x7f00000000c0)={r0, r1+60000000}, &(0x7f0000000180)={&(0x7f0000000100), 0x8}) 00:44:45 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$NBD_DISCONNECT(r1, 0xab08) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async, rerun: 64) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (rerun: 64) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) r3 = syz_open_dev$ndb(&(0x7f0000000040), 0x0, 0x2) ioctl$NBD_SET_BLKSIZE(r3, 0xab01, 0x5) ioctl$NBD_SET_BLKSIZE(r2, 0xab01, 0xc0000000000) 00:44:45 executing program 5: unshare(0x400) unshare(0x40020480) 00:44:45 executing program 2: r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) epoll_ctl$EPOLL_CTL_DEL(0xffffffffffffffff, 0x2, r0) (async) socket$xdp(0x2c, 0x3, 0x0) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) epoll_ctl$EPOLL_CTL_DEL(r2, 0x2, r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) (async) unshare(0x4050000) 00:44:45 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:45 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = accept4(0xffffffffffffffff, &(0x7f00000001c0)=@ieee802154={0x24, @short}, &(0x7f0000000240)=0x80, 0x80800) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000280)={0xffffffffffffffff}) (async, rerun: 32) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000002c0)={0xffffffffffffffff}) (async, rerun: 32) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000300)={0x8c, 0x0, 0x200, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '^#'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}]}, 0x8c}, 0x1, 0x0, 0x0, 0x20000817}, 0x4004) (async, rerun: 64) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 64) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r6) r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r6) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f0000000000)={&(0x7f0000000080)={0x20, r7, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:44:45 executing program 5: unshare(0x400) (async) unshare(0x40020480) [ 3369.100555] nbd: must specify at least one socket [ 3369.117799] nbd: couldn't find a device at index 0 00:44:45 executing program 2: r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) epoll_ctl$EPOLL_CTL_DEL(0xffffffffffffffff, 0x2, r0) socket$xdp(0x2c, 0x3, 0x0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_DEL(r2, 0x2, r0) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) unshare(0x4050000) ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) (async) epoll_ctl$EPOLL_CTL_DEL(0xffffffffffffffff, 0x2, r0) (async) socket$xdp(0x2c, 0x3, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) epoll_ctl$EPOLL_CTL_DEL(r2, 0x2, r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) (async) unshare(0x4050000) (async) 00:44:45 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:45 executing program 5: unshare(0x22000700) 00:44:45 executing program 2: ioctl$ASHMEM_SET_PROT_MASK(0xffffffffffffffff, 0x40087705, &(0x7f0000000000)={0x44, 0x6}) unshare(0xc000400) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:45 executing program 5: unshare(0x22000700) [ 3369.327154] nbd: couldn't find a device at index 0 00:44:46 executing program 5: unshare(0x22000700) unshare(0x22000700) (async) 00:44:46 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) clock_gettime(0x0, &(0x7f0000000080)={0x0, 0x0}) pselect6(0x0, 0xfffffffffffffffd, &(0x7f0000000000)={0x0, 0xae0e, 0x6, 0x9, 0x9, 0xffa, 0x5, 0xaf6c}, &(0x7f0000000040)={0xbf, 0xee, 0x9, 0x1d, 0x6, 0x3f, 0x8000000000000, 0x7}, &(0x7f00000000c0)={r0, r1+60000000}, &(0x7f0000000180)={&(0x7f0000000100), 0x8}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) clock_gettime(0x0, &(0x7f0000000080)) (async) pselect6(0x0, 0xfffffffffffffffd, &(0x7f0000000000)={0x0, 0xae0e, 0x6, 0x9, 0x9, 0xffa, 0x5, 0xaf6c}, &(0x7f0000000040)={0xbf, 0xee, 0x9, 0x1d, 0x6, 0x3f, 0x8000000000000, 0x7}, &(0x7f00000000c0)={r0, r1+60000000}, &(0x7f0000000180)={&(0x7f0000000100), 0x8}) (async) 00:44:46 executing program 2: ioctl$ASHMEM_SET_PROT_MASK(0xffffffffffffffff, 0x40087705, &(0x7f0000000000)={0x44, 0x6}) (async) unshare(0xc000400) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:46 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) setsockopt$MRT6_DEL_MIF(0xffffffffffffffff, 0x29, 0xcb, &(0x7f0000000040)={0x0, 0x0, 0x1, 0x0, 0x9}, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000800) socket$netlink(0x10, 0x3, 0xf) 00:44:46 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:46 executing program 3: sched_rr_get_interval(0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:44:46 executing program 2: ioctl$ASHMEM_SET_PROT_MASK(0xffffffffffffffff, 0x40087705, &(0x7f0000000000)={0x44, 0x6}) (async) unshare(0xc000400) (async) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:46 executing program 5: unshare(0x2000300) unshare(0x2040200) 00:44:46 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) setsockopt$MRT6_DEL_MIF(0xffffffffffffffff, 0x29, 0xcb, &(0x7f0000000040)={0x0, 0x0, 0x1, 0x0, 0x9}, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000800) socket$netlink(0x10, 0x3, 0xf) 00:44:46 executing program 3: sched_rr_get_interval(0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) [ 3370.018026] nla_parse: 29 callbacks suppressed [ 3370.018035] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3370.040706] nbd: must specify at least one socket [ 3370.049357] block nbd1: not configured, cannot reconfigure [ 3370.062642] nbd: couldn't find a device at index 0 00:44:46 executing program 5: unshare(0x2000300) unshare(0x2040200) unshare(0x2000300) (async) unshare(0x2040200) (async) 00:44:46 executing program 2: unshare(0xc000400) getpeername$packet(0xffffffffffffffff, &(0x7f0000000000)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f0000000040)=0x14) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000080)='vxcan1\x00') openat$sw_sync(0xffffffffffffff9c, &(0x7f00000000c0), 0x2080, 0x0) [ 3370.102978] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3370.130496] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:46 executing program 5: unshare(0x2000300) unshare(0x2040200) unshare(0x2000300) (async) unshare(0x2040200) (async) [ 3370.197567] block nbd1: not configured, cannot reconfigure [ 3370.209184] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3370.221590] nbd: must specify at least one socket 00:44:47 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000000), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) 00:44:47 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:47 executing program 3: sched_rr_get_interval(0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) sched_rr_get_interval(0x0, &(0x7f0000000000)) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) 00:44:47 executing program 2: unshare(0xc000400) (async) getpeername$packet(0xffffffffffffffff, &(0x7f0000000000)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f0000000040)=0x14) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000080)='vxcan1\x00') (async) openat$sw_sync(0xffffffffffffff9c, &(0x7f00000000c0), 0x2080, 0x0) 00:44:47 executing program 5: unshare(0x2020800) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = socket$packet(0x11, 0x0, 0x300) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000040)) 00:44:47 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) setsockopt$MRT6_DEL_MIF(0xffffffffffffffff, 0x29, 0xcb, &(0x7f0000000040)={0x0, 0x0, 0x1, 0x0, 0x9}, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000800) (async) socket$netlink(0x10, 0x3, 0xf) 00:44:47 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000040)={0x69, 0x9, 0x5}) ioctl$KVM_SET_CPUID(0xffffffffffffffff, 0x4008ae8a, &(0x7f0000000080)=ANY=[@ANYBLOB="0500000000000000010000401f00000007000500080000000400000000000000"]) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$KVM_SET_LAPIC(r1, 0x4400ae8f, &(0x7f00000000c0)={"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"}) socket$netlink(0x10, 0x3, 0x9) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) [ 3370.899076] block nbd1: not configured, cannot reconfigure [ 3370.915009] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. 00:44:47 executing program 2: unshare(0xc000400) (async) getpeername$packet(0xffffffffffffffff, &(0x7f0000000000)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f0000000040)=0x14) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000080)='vxcan1\x00') (async, rerun: 32) openat$sw_sync(0xffffffffffffff9c, &(0x7f00000000c0), 0x2080, 0x0) (rerun: 32) 00:44:47 executing program 5: unshare(0x2020800) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = socket$packet(0x11, 0x0, 0x300) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000040)) [ 3370.942537] nbd: must specify at least one socket [ 3370.954911] nbd: couldn't find a device at index 0 [ 3370.970142] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3370.981835] nbd: must specify at least one socket 00:44:47 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000040)={0x69, 0x9, 0x5}) ioctl$KVM_SET_CPUID(0xffffffffffffffff, 0x4008ae8a, &(0x7f0000000080)=ANY=[@ANYBLOB="0500000000000000010000401f00000007000500080000000400000000000000"]) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$KVM_SET_LAPIC(r1, 0x4400ae8f, &(0x7f00000000c0)={"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"}) socket$netlink(0x10, 0x3, 0x9) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) socket$netlink(0x10, 0x3, 0xc) (async) ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000040)={0x69, 0x9, 0x5}) (async) ioctl$KVM_SET_CPUID(0xffffffffffffffff, 0x4008ae8a, &(0x7f0000000080)=ANY=[@ANYBLOB="0500000000000000010000401f00000007000500080000000400000000000000"]) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$KVM_SET_LAPIC(r1, 0x4400ae8f, &(0x7f00000000c0)={"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"}) (async) socket$netlink(0x10, 0x3, 0x9) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) 00:44:47 executing program 5: unshare(0x2020800) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = socket$packet(0x11, 0x0, 0x300) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000040)) unshare(0x2020800) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) (async) socket$packet(0x11, 0x0, 0x300) (async) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000040)) (async) [ 3371.001692] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3371.024451] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:47 executing program 2: unshare(0x800) socket(0xf, 0x5, 0x10000) 00:44:48 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000000), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000000), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) (async) 00:44:48 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:48 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) (async) ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000040)={0x69, 0x9, 0x5}) ioctl$KVM_SET_CPUID(0xffffffffffffffff, 0x4008ae8a, &(0x7f0000000080)=ANY=[@ANYBLOB="0500000000000000010000401f00000007000500080000000400000000000000"]) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$KVM_SET_LAPIC(r1, 0x4400ae8f, &(0x7f00000000c0)={"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"}) (async) socket$netlink(0x10, 0x3, 0x9) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:48 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) accept4(0xffffffffffffffff, &(0x7f0000000140)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}}}, &(0x7f0000000000)=0x80, 0x80000) r4 = socket(0x1f, 0x0, 0x6a5) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f00000000c0)={&(0x7f00000001c0)={0x30, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}]}]}, 0x30}}, 0x0) 00:44:48 executing program 5: r0 = socket$igmp6(0xa, 0x3, 0x2) setsockopt$MRT6_PIM(r0, 0x29, 0xcf, &(0x7f0000000000)=0x4, 0x4) unshare(0x400) 00:44:48 executing program 2: unshare(0x800) (async) socket(0xf, 0x5, 0x10000) 00:44:48 executing program 2: unshare(0x800) (async) socket(0xf, 0x5, 0x10000) 00:44:48 executing program 5: r0 = socket$igmp6(0xa, 0x3, 0x2) setsockopt$MRT6_PIM(r0, 0x29, 0xcf, &(0x7f0000000000)=0x4, 0x4) unshare(0x400) socket$igmp6(0xa, 0x3, 0x2) (async) setsockopt$MRT6_PIM(r0, 0x29, 0xcf, &(0x7f0000000000)=0x4, 0x4) (async) unshare(0x400) (async) 00:44:48 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x15) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) [ 3371.838737] nbd: couldn't find a device at index 0 00:44:48 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) accept4(0xffffffffffffffff, &(0x7f0000000140)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}}}, &(0x7f0000000000)=0x80, 0x80000) (async) r4 = socket(0x1f, 0x0, 0x6a5) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f00000000c0)={&(0x7f00000001c0)={0x30, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}]}]}, 0x30}}, 0x0) 00:44:48 executing program 2: ioctl$KVM_SET_VAPIC_ADDR(0xffffffffffffffff, 0x4008ae93, &(0x7f0000000000)=0x4000) ioctl$KVM_GET_CPUID2(0xffffffffffffffff, 0xc008ae91, &(0x7f0000000080)={0x5, 0x0, [{}, {}, {}, {}, {}]}) unshare(0xc000400) [ 3371.891684] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3371.909232] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:48 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:48 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x15) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) [ 3372.019959] nbd: couldn't find a device at index 0 00:44:49 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 64) pselect6(0x40, &(0x7f0000000000), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) (rerun: 64) 00:44:49 executing program 2: ioctl$KVM_SET_VAPIC_ADDR(0xffffffffffffffff, 0x4008ae93, &(0x7f0000000000)=0x4000) ioctl$KVM_GET_CPUID2(0xffffffffffffffff, 0xc008ae91, &(0x7f0000000080)={0x5, 0x0, [{}, {}, {}, {}, {}]}) (async) unshare(0xc000400) 00:44:49 executing program 5: r0 = socket$igmp6(0xa, 0x3, 0x2) setsockopt$MRT6_PIM(r0, 0x29, 0xcf, &(0x7f0000000000)=0x4, 0x4) unshare(0x400) socket$igmp6(0xa, 0x3, 0x2) (async) setsockopt$MRT6_PIM(r0, 0x29, 0xcf, &(0x7f0000000000)=0x4, 0x4) (async) unshare(0x400) (async) 00:44:49 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) accept4(0xffffffffffffffff, &(0x7f0000000140)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}}}, &(0x7f0000000000)=0x80, 0x80000) (async) r4 = socket(0x1f, 0x0, 0x6a5) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f00000000c0)={&(0x7f00000001c0)={0x30, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}]}]}, 0x30}}, 0x0) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x15) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) 00:44:49 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:49 executing program 5: unshare(0x48000800) getsockopt$XDP_STATISTICS(0xffffffffffffffff, 0x11b, 0x7, &(0x7f0000000000), &(0x7f0000000040)=0x3e) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, r0, &(0x7f0000000040)={0xffffffffffffffff, r0, 0x5}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r2) 00:44:49 executing program 2: ioctl$KVM_SET_VAPIC_ADDR(0xffffffffffffffff, 0x4008ae93, &(0x7f0000000000)=0x4000) ioctl$KVM_GET_CPUID2(0xffffffffffffffff, 0xc008ae91, &(0x7f0000000080)={0x5, 0x0, [{}, {}, {}, {}, {}]}) unshare(0xc000400) ioctl$KVM_SET_VAPIC_ADDR(0xffffffffffffffff, 0x4008ae93, &(0x7f0000000000)=0x4000) (async) ioctl$KVM_GET_CPUID2(0xffffffffffffffff, 0xc008ae91, &(0x7f0000000080)={0x5, 0x0, [{}, {}, {}, {}, {}]}) (async) unshare(0xc000400) (async) 00:44:49 executing program 5: unshare(0x48000800) (async) getsockopt$XDP_STATISTICS(0xffffffffffffffff, 0x11b, 0x7, &(0x7f0000000000), &(0x7f0000000040)=0x3e) (async) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:49 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0x7, &(0x7f0000000000)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x4008801) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, r0, &(0x7f0000000040)={0xffffffffffffffff, r0, 0x5}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r2) socket$netlink(0x10, 0x3, 0x8) (async) getpgrp(0x0) (async) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, r0, &(0x7f0000000040)={0xffffffffffffffff, r0, 0x5}) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r2) (async) [ 3372.778809] nbd: couldn't find a device at index 0 00:44:49 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r0, 0x8982, &(0x7f0000000000)={0x6, 'veth1_virt_wifi\x00', {0x1146ebf}, 0x9}) 00:44:49 executing program 5: unshare(0x48000800) (async) getsockopt$XDP_STATISTICS(0xffffffffffffffff, 0x11b, 0x7, &(0x7f0000000000), &(0x7f0000000040)=0x3e) (async) ioctl$ASHMEM_PURGE_ALL_CACHES(0xffffffffffffffff, 0x770a, 0x0) 00:44:49 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:49 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0x7, &(0x7f0000000000)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x4008801) 00:44:49 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_VCPU_FAULT(r0, 0x4008ae52, &(0x7f0000000000)=0xfda) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, r0, &(0x7f0000000040)={0xffffffffffffffff, r0, 0x5}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r2) socket$netlink(0x10, 0x3, 0x8) (async) getpgrp(0x0) (async) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, r0, &(0x7f0000000040)={0xffffffffffffffff, r0, 0x5}) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r2) (async) 00:44:49 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r0, 0x8982, &(0x7f0000000000)={0x6, 'veth1_virt_wifi\x00', {0x1146ebf}, 0x9}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r0, 0x8982, &(0x7f0000000000)={0x6, 'veth1_virt_wifi\x00', {0x1146ebf}, 0x9}) (async) 00:44:49 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0x7, &(0x7f0000000000)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x4008801) 00:44:49 executing program 5: unshare(0x400) unshare(0x2000200) openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) 00:44:49 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_VCPU_FAULT(r0, 0x4008ae52, &(0x7f0000000000)=0xfda) unshare(0xc000400) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_S390_VCPU_FAULT(r0, 0x4008ae52, &(0x7f0000000000)=0xfda) (async) 00:44:49 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r0, 0x8982, &(0x7f0000000000)={0x6, 'veth1_virt_wifi\x00', {0x1146ebf}, 0x9}) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x1) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:49 executing program 5: unshare(0x400) unshare(0x2000200) openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) unshare(0x400) (async) unshare(0x2000200) (async) openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) (async) 00:44:49 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), r0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000440)={&(0x7f0000000340)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x20, r4, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x20}, 0x1, 0x0, 0x0, 0x80}, 0x404c045) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r5, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x1c, r1, 0x8, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc085}, 0x4040004) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_STATUS(r6, &(0x7f0000000300)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x5c, r1, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x835}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}]}, 0x5c}}, 0x4000000) 00:44:49 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:49 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x1) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:49 executing program 2: unshare(0xc000400) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async, rerun: 64) ioctl$KVM_S390_VCPU_FAULT(r0, 0x4008ae52, &(0x7f0000000000)=0xfda) (rerun: 64) 00:44:49 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x4, 0x0, 0x0, 0x0, 0x6e2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4000000000000, 0x2}, &(0x7f0000000000), 0x0) 00:44:49 executing program 5: unshare(0x400) unshare(0x2000200) (async) openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) 00:44:50 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x4, 0x0, 0x0, 0x0, 0x6e2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4000000000000, 0x2}, &(0x7f0000000000), 0x0) 00:44:50 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), r0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000440)={&(0x7f0000000340)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x20, r4, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x20}, 0x1, 0x0, 0x0, 0x80}, 0x404c045) (async) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r5, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x1c, r1, 0x8, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc085}, 0x4040004) (async) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_STATUS(r6, &(0x7f0000000300)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x5c, r1, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x835}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}]}, 0x5c}}, 0x4000000) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x1) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:50 executing program 2: unshare(0xc000400) openat$sysctl(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/vm/drop_caches\x00', 0x1, 0x0) 00:44:50 executing program 5: unshare(0x400) r0 = socket(0x26, 0x80000, 0x1) ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'team0\x00', 0x0}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) getsockopt$inet_dccp_int(r2, 0x21, 0x11, &(0x7f00000000c0), &(0x7f0000000100)=0x4) bind$802154_raw(r0, &(0x7f0000000080)={0x24, @none={0x0, 0xffff}}, 0x14) setsockopt$MRT6_DEL_MIF(r0, 0x29, 0xcb, &(0x7f0000000040)={0xffffffffffffffff, 0x1, 0x0, r1, 0xdb}, 0xc) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3373.468346] nbd: must specify at least one socket 00:44:50 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x4, 0x0, 0x0, 0x0, 0x6e2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4000000000000, 0x2}, &(0x7f0000000000), 0x0) 00:44:50 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), r0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000440)={&(0x7f0000000340)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x20, r4, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x20}, 0x1, 0x0, 0x0, 0x80}, 0x404c045) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r5, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x1c, r1, 0x8, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc085}, 0x4040004) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_STATUS(r6, &(0x7f0000000300)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x5c, r1, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x835}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}]}, 0x5c}}, 0x4000000) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), r0) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000440)={&(0x7f0000000340)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x20, r4, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x20}, 0x1, 0x0, 0x0, 0x80}, 0x404c045) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r5, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x1c, r1, 0x8, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc085}, 0x4040004) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_STATUS(r6, &(0x7f0000000300)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x5c, r1, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x835}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}]}, 0x5c}}, 0x4000000) (async) 00:44:50 executing program 5: unshare(0x400) r0 = socket(0x26, 0x80000, 0x1) (async) ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'team0\x00', 0x0}) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async, rerun: 64) getsockopt$inet_dccp_int(r2, 0x21, 0x11, &(0x7f00000000c0), &(0x7f0000000100)=0x4) (async, rerun: 64) bind$802154_raw(r0, &(0x7f0000000080)={0x24, @none={0x0, 0xffff}}, 0x14) setsockopt$MRT6_DEL_MIF(r0, 0x29, 0xcb, &(0x7f0000000040)={0xffffffffffffffff, 0x1, 0x0, r1, 0xdb}, 0xc) 00:44:50 executing program 2: unshare(0xc000400) (async) openat$sysctl(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/vm/drop_caches\x00', 0x1, 0x0) 00:44:50 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) bpf$BPF_BTF_LOAD(0xd, &(0x7f0000000300)={0x0, 0x0, 0x0, 0x0, 0x1}, 0x20) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) getpeername$packet(0xffffffffffffffff, &(0x7f0000000080)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f00000001c0)=0x14) ioctl$sock_FIOGETOWN(r0, 0x8903, &(0x7f0000000280)=0x0) sched_rr_get_interval(r2, &(0x7f00000002c0)) bpf$MAP_CREATE(0x0, &(0x7f0000000200)=@base={0x3, 0x800, 0xfffffff7, 0x80000001, 0x281, 0xffffffffffffffff, 0x339, '\x00', r1, 0xffffffffffffffff, 0x0, 0x4, 0x4}, 0x48) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000340)=ANY=[], 0x24}}, 0x4004801) 00:44:50 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = syz_open_dev$vcsn(&(0x7f0000000000), 0x4, 0x20000) epoll_ctl$EPOLL_CTL_DEL(r1, 0x2, r0) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 2: unshare(0xc000400) (async) openat$sysctl(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/vm/drop_caches\x00', 0x1, 0x0) [ 3373.675716] nbd: must specify at least one socket 00:44:50 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) bpf$BPF_BTF_LOAD(0xd, &(0x7f0000000300)={0x0, 0x0, 0x0, 0x0, 0x1}, 0x20) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) getpeername$packet(0xffffffffffffffff, &(0x7f0000000080)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f00000001c0)=0x14) (async) ioctl$sock_FIOGETOWN(r0, 0x8903, &(0x7f0000000280)=0x0) sched_rr_get_interval(r2, &(0x7f00000002c0)) (async) bpf$MAP_CREATE(0x0, &(0x7f0000000200)=@base={0x3, 0x800, 0xfffffff7, 0x80000001, 0x281, 0xffffffffffffffff, 0x339, '\x00', r1, 0xffffffffffffffff, 0x0, 0x4, 0x4}, 0x48) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000340)=ANY=[], 0x24}}, 0x4004801) 00:44:50 executing program 5: unshare(0x400) r0 = socket(0x26, 0x80000, 0x1) ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'team0\x00', 0x0}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) getsockopt$inet_dccp_int(r2, 0x21, 0x11, &(0x7f00000000c0), &(0x7f0000000100)=0x4) bind$802154_raw(r0, &(0x7f0000000080)={0x24, @none={0x0, 0xffff}}, 0x14) setsockopt$MRT6_DEL_MIF(r0, 0x29, 0xcb, &(0x7f0000000040)={0xffffffffffffffff, 0x1, 0x0, r1, 0xdb}, 0xc) unshare(0x400) (async) socket(0x26, 0x80000, 0x1) (async) ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000000)) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) getsockopt$inet_dccp_int(r2, 0x21, 0x11, &(0x7f00000000c0), &(0x7f0000000100)=0x4) (async) bind$802154_raw(r0, &(0x7f0000000080)={0x24, @none={0x0, 0xffff}}, 0x14) (async) setsockopt$MRT6_DEL_MIF(r0, 0x29, 0xcb, &(0x7f0000000040)={0xffffffffffffffff, 0x1, 0x0, r1, 0xdb}, 0xc) (async) 00:44:50 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000000), 0x4, 0x20000) epoll_ctl$EPOLL_CTL_DEL(r1, 0x2, r0) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:50 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="20008000", @ANYRES16=r1, @ANYBLOB="0ff40000090000009e4d0000c7ff06000000000000000000"], 0x20}}, 0x0) r2 = syz_open_dev$vcsn(&(0x7f0000000000), 0xfffffffffffffff9, 0x80000) setsockopt$inet_dccp_buf(r2, 0x21, 0x2, &(0x7f0000000140)="b071b968587d517969f9d6bf115218a7957a46de9b9908bc8ff9ffe70d49267e68e3c4377b76aa43c93eeacf11f4a48c46e81d8db7b1bb6f94d0c80e42cb876533f74dbc69adcdbb152eb6277f069167baa9d8f2f56b0c9c471f42d057504fee43bb675ed63b2b1178160888534d1f0966e118a8a7231faca92438d53d83c550e2108620391991", 0x87) 00:44:50 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) bpf$BPF_BTF_LOAD(0xd, &(0x7f0000000300)={0x0, 0x0, 0x0, 0x0, 0x1}, 0x20) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async, rerun: 32) getpeername$packet(0xffffffffffffffff, &(0x7f0000000080)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f00000001c0)=0x14) (rerun: 32) ioctl$sock_FIOGETOWN(r0, 0x8903, &(0x7f0000000280)=0x0) sched_rr_get_interval(r2, &(0x7f00000002c0)) bpf$MAP_CREATE(0x0, &(0x7f0000000200)=@base={0x3, 0x800, 0xfffffff7, 0x80000001, 0x281, 0xffffffffffffffff, 0x339, '\x00', r1, 0xffffffffffffffff, 0x0, 0x4, 0x4}, 0x48) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000340)=ANY=[], 0x24}}, 0x4004801) 00:44:50 executing program 2: unshare(0xc000400) unshare(0x54000880) unshare(0x20000900) syz_open_dev$dri(&(0x7f0000000000), 0x400, 0x400100) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="20008000", @ANYRES16=r1, @ANYBLOB="0ff40000090000009e4d0000c7ff06000000000000000000"], 0x20}}, 0x0) r2 = syz_open_dev$vcsn(&(0x7f0000000000), 0xfffffffffffffff9, 0x80000) setsockopt$inet_dccp_buf(r2, 0x21, 0x2, &(0x7f0000000140)="b071b968587d517969f9d6bf115218a7957a46de9b9908bc8ff9ffe70d49267e68e3c4377b76aa43c93eeacf11f4a48c46e81d8db7b1bb6f94d0c80e42cb876533f74dbc69adcdbb152eb6277f069167baa9d8f2f56b0c9c471f42d057504fee43bb675ed63b2b1178160888534d1f0966e118a8a7231faca92438d53d83c550e2108620391991", 0x87) 00:44:50 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 32) r1 = syz_open_dev$vcsn(&(0x7f0000000000), 0x4, 0x20000) (rerun: 32) epoll_ctl$EPOLL_CTL_DEL(r1, 0x2, r0) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 5: r0 = socket$netlink(0x10, 0x3, 0xc) bpf$BPF_BTF_LOAD(0xd, &(0x7f0000000300)={0x0, 0x0, 0x0, 0x0, 0x1}, 0x20) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) getpeername$packet(0xffffffffffffffff, &(0x7f0000000080)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @random}, &(0x7f00000001c0)=0x14) ioctl$sock_FIOGETOWN(r0, 0x8903, &(0x7f0000000280)=0x0) sched_rr_get_interval(r2, &(0x7f00000002c0)) bpf$MAP_CREATE(0x0, &(0x7f0000000200)=@base={0x3, 0x800, 0xfffffff7, 0x80000001, 0x281, 0xffffffffffffffff, 0x339, '\x00', r1, 0xffffffffffffffff, 0x0, 0x4, 0x4}, 0x48) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000340)=ANY=[], 0x24}}, 0x4004801) 00:44:50 executing program 2: unshare(0xc000400) unshare(0x54000880) unshare(0x20000900) syz_open_dev$dri(&(0x7f0000000000), 0x400, 0x400100) unshare(0xc000400) (async) unshare(0x54000880) (async) unshare(0x20000900) (async) syz_open_dev$dri(&(0x7f0000000000), 0x400, 0x400100) (async) 00:44:50 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="20008000", @ANYRES16=r1, @ANYBLOB="0ff40000090000009e4d0000c7ff06000000000000000000"], 0x20}}, 0x0) r2 = syz_open_dev$vcsn(&(0x7f0000000000), 0xfffffffffffffff9, 0x80000) setsockopt$inet_dccp_buf(r2, 0x21, 0x2, &(0x7f0000000140)="b071b968587d517969f9d6bf115218a7957a46de9b9908bc8ff9ffe70d49267e68e3c4377b76aa43c93eeacf11f4a48c46e81d8db7b1bb6f94d0c80e42cb876533f74dbc69adcdbb152eb6277f069167baa9d8f2f56b0c9c471f42d057504fee43bb675ed63b2b1178160888534d1f0966e118a8a7231faca92438d53d83c550e2108620391991", 0x87) 00:44:50 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:50 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000000)={0x0, 0x4000000, 0x0, 0x0, 0x0, 0x0, 0x7}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) 00:44:51 executing program 1: ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f00000000c0), &(0x7f0000000100)=0x4) r1 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 2: unshare(0xc000400) unshare(0x54000880) unshare(0x20000900) syz_open_dev$dri(&(0x7f0000000000), 0x400, 0x400100) unshare(0xc000400) (async) unshare(0x54000880) (async) unshare(0x20000900) (async) syz_open_dev$dri(&(0x7f0000000000), 0x400, 0x400100) (async) 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) 00:44:51 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000000)={0x0, 0x4000000, 0x0, 0x0, 0x0, 0x0, 0x7}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000000)={0x0, 0x4000000, 0x0, 0x0, 0x0, 0x0, 0x7}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) (async) 00:44:51 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000000)={0x0, 0x4000000, 0x0, 0x0, 0x0, 0x0, 0x7}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) 00:44:51 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0x1, 0x30000) ioctl$LOOP_SET_STATUS64(r0, 0x4c04, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x5, 0x20, 0x0, 0x2, 0x5, 0x10, "425974ec834fa57cc5883042ee276a8bae81464349761fc6e5b5784f7cc54489a0f68b149b1dee982ae1bd55e6c5a08fed75868d8894bc793060c7502ccbe071", "929c1890e519bb4509bd2247239b95ab1c3014ade91cfc9494a08217da5a60ec40b271179e1fd6524bc6989b4805c688f4989b340efa2cb4d35770db49da6bfa", "79d4d931c100c708dbc862220445a79cd37e687994f24b26093d65f6afc03f0d", [0x8264, 0x4]}) [ 3374.370830] nbd: must specify at least one socket 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 1: ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) (async, rerun: 64) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) (rerun: 64) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f00000000c0), &(0x7f0000000100)=0x4) (async) r1 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) 00:44:51 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280), 0x0) 00:44:51 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0x1, 0x30000) ioctl$LOOP_SET_STATUS64(r0, 0x4c04, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x5, 0x20, 0x0, 0x2, 0x5, 0x10, "425974ec834fa57cc5883042ee276a8bae81464349761fc6e5b5784f7cc54489a0f68b149b1dee982ae1bd55e6c5a08fed75868d8894bc793060c7502ccbe071", "929c1890e519bb4509bd2247239b95ab1c3014ade91cfc9494a08217da5a60ec40b271179e1fd6524bc6989b4805c688f4989b340efa2cb4d35770db49da6bfa", "79d4d931c100c708dbc862220445a79cd37e687994f24b26093d65f6afc03f0d", [0x8264, 0x4]}) [ 3374.538740] nbd: must specify at least one socket 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) (async) 00:44:51 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280), 0x0) 00:44:51 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:51 executing program 1: ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000040)) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f00000000c0), &(0x7f0000000100)=0x4) r1 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 2: unshare(0xc000400) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0x1, 0x30000) ioctl$LOOP_SET_STATUS64(r0, 0x4c04, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x5, 0x20, 0x0, 0x2, 0x5, 0x10, "425974ec834fa57cc5883042ee276a8bae81464349761fc6e5b5784f7cc54489a0f68b149b1dee982ae1bd55e6c5a08fed75868d8894bc793060c7502ccbe071", "929c1890e519bb4509bd2247239b95ab1c3014ade91cfc9494a08217da5a60ec40b271179e1fd6524bc6989b4805c688f4989b340efa2cb4d35770db49da6bfa", "79d4d931c100c708dbc862220445a79cd37e687994f24b26093d65f6afc03f0d", [0x8264, 0x4]}) [ 3374.721568] nbd: must specify at least one socket 00:44:51 executing program 1: syz_open_dev$vcsn(&(0x7f0000000040), 0x7, 0x800) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000080)={0x9, 0x3c, 0x4000000002}) r1 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) ioctl$KVM_GET_REGS(0xffffffffffffffff, 0x8090ae81, &(0x7f00000000c0)) [ 3374.765602] nbd: must specify at least one socket 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00@\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:51 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280), 0x0) (async) 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 2: unshare(0x6c020500) 00:44:51 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:51 executing program 1: syz_open_dev$vcsn(&(0x7f0000000040), 0x7, 0x800) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000080)={0x9, 0x3c, 0x4000000002}) (async, rerun: 64) r1 = socket$netlink(0x10, 0x3, 0xc) (rerun: 64) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) (async) ioctl$KVM_GET_REGS(0xffffffffffffffff, 0x8090ae81, &(0x7f00000000c0)) 00:44:51 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4(r0, &(0x7f0000000000)=@vsock={0x28, 0x0, 0x0, @local}, &(0x7f0000000080)=0x80, 0x80800) ioctl$ifreq_SIOCGIFINDEX_team(r1, 0x8933, &(0x7f00000000c0)) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00@\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:51 executing program 2: unshare(0x6c020500) 00:44:51 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:51 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00@\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:51 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4(r0, &(0x7f0000000000)=@vsock={0x28, 0x0, 0x0, @local}, &(0x7f0000000080)=0x80, 0x80800) ioctl$ifreq_SIOCGIFINDEX_team(r1, 0x8933, &(0x7f00000000c0)) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:51 executing program 2: unshare(0x6c020500) unshare(0x6c020500) (async) 00:44:51 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) 00:44:51 executing program 1: syz_open_dev$vcsn(&(0x7f0000000040), 0x7, 0x800) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000080)={0x9, 0x3c, 0x4000000002}) (async) r1 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r1) (async, rerun: 32) ioctl$KVM_GET_REGS(0xffffffffffffffff, 0x8090ae81, &(0x7f00000000c0)) (rerun: 32) 00:44:51 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4(r0, &(0x7f0000000000)=@vsock={0x28, 0x0, 0x0, @local}, &(0x7f0000000080)=0x80, 0x80800) ioctl$ifreq_SIOCGIFINDEX_team(r1, 0x8933, &(0x7f00000000c0)) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) [ 3375.182102] nla_parse: 30 callbacks suppressed [ 3375.182112] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:44:51 executing program 2: unshare(0x2c000400) unshare(0x280) [ 3375.253726] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:44:52 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r1 = socket(0x2, 0x80005, 0x1ff) accept4$phonet_pipe(r1, 0x0, &(0x7f00000000c0), 0x80000) setsockopt$XDP_TX_RING(0xffffffffffffffff, 0x11b, 0x3, &(0x7f0000000080)=0x12040, 0x4) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) 00:44:52 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) 00:44:52 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:52 executing program 2: unshare(0x2c000400) unshare(0x280) unshare(0x2c000400) (async) unshare(0x280) (async) 00:44:52 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:44:52 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r1 = socket(0x2, 0x80005, 0x1ff) accept4$phonet_pipe(r1, 0x0, &(0x7f00000000c0), 0x80000) setsockopt$XDP_TX_RING(0xffffffffffffffff, 0x11b, 0x3, &(0x7f0000000080)=0x12040, 0x4) (async, rerun: 64) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) (rerun: 64) 00:44:52 executing program 2: unshare(0x2c000400) (async) unshare(0x280) [ 3375.454654] nbd: must specify at least one socket 00:44:52 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) [ 3375.487422] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:44:52 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r1 = socket(0x2, 0x80005, 0x1ff) accept4$phonet_pipe(r1, 0x0, &(0x7f00000000c0), 0x80000) setsockopt$XDP_TX_RING(0xffffffffffffffff, 0x11b, 0x3, &(0x7f0000000080)=0x12040, 0x4) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) socket(0x2, 0x80005, 0x1ff) (async) accept4$phonet_pipe(r1, 0x0, &(0x7f00000000c0), 0x80000) (async) setsockopt$XDP_TX_RING(0xffffffffffffffff, 0x11b, 0x3, &(0x7f0000000080)=0x12040, 0x4) (async) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) (async) [ 3375.529640] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3375.642003] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3375.665721] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x10000000000, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:52 executing program 2: unshare(0x0) 00:44:52 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xf) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000200)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x1c, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}]}, 0x1c}, 0x1, 0x0, 0x0, 0x41}, 0x4000000) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x24, r1, 0x10, 0x70bd26, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}, 0x1, 0x0, 0x0, 0x20000011}, 0x4810) 00:44:52 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:52 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:44:52 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x10000000000, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:52 executing program 2: unshare(0x0) unshare(0x0) (async) 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x10000000000, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0x10000000000, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) [ 3375.869865] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3375.892106] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:44:52 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x34, r2, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x600048c5}, 0x8000) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) eventfd2(0x76, 0x0) socket(0xb, 0x1, 0x4) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3) 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_SYNC_FILE(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000000)={0x0, 0x1, 0xffffffffffffffff}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000040)={"7cb78542b50eb65a77ae9fa1c90143fc", 0x0, 0x0, {0x9, 0x7f}, {0x2, 0x1}, 0x20, [0x6, 0x4, 0x0, 0x4, 0x2, 0x3ff, 0x0, 0x1a3e0, 0x0, 0x2, 0x2, 0x8, 0x2, 0x73ad, 0x9]}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0xed45, 0x0, 0x0, 0x0, 0xffffffffffffffff}, &(0x7f0000000280), 0x0) 00:44:52 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:52 executing program 2: unshare(0x0) 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_SYNC_FILE(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000000)={0x0, 0x1, 0xffffffffffffffff}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000040)={"7cb78542b50eb65a77ae9fa1c90143fc", 0x0, 0x0, {0x9, 0x7f}, {0x2, 0x1}, 0x20, [0x6, 0x4, 0x0, 0x4, 0x2, 0x3ff, 0x0, 0x1a3e0, 0x0, 0x2, 0x2, 0x8, 0x2, 0x73ad, 0x9]}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0xed45, 0x0, 0x0, 0x0, 0xffffffffffffffff}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_SYNC_FILE(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000000)) (async) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000040)={"7cb78542b50eb65a77ae9fa1c90143fc", 0x0, 0x0, {0x9, 0x7f}, {0x2, 0x1}, 0x20, [0x6, 0x4, 0x0, 0x4, 0x2, 0x3ff, 0x0, 0x1a3e0, 0x0, 0x2, 0x2, 0x8, 0x2, 0x73ad, 0x9]}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0xed45, 0x0, 0x0, 0x0, 0xffffffffffffffff}, &(0x7f0000000280), 0x0) (async) [ 3376.004280] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3376.032273] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:52 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xf) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000200)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x1c, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}]}, 0x1c}, 0x1, 0x0, 0x0, 0x41}, 0x4000000) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x24, r1, 0x10, 0x70bd26, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}, 0x1, 0x0, 0x0, 0x20000011}, 0x4810) socket$netlink(0x10, 0x3, 0xf) (async) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000200)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x1c, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}]}, 0x1c}, 0x1, 0x0, 0x0, 0x41}, 0x4000000) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff) (async) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x24, r1, 0x10, 0x70bd26, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}, 0x1, 0x0, 0x0, 0x20000011}, 0x4810) (async) 00:44:52 executing program 2: unshare(0x18060b80) 00:44:52 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_SYNC_FILE(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000000)={0x0, 0x1, 0xffffffffffffffff}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000040)={"7cb78542b50eb65a77ae9fa1c90143fc", 0x0, 0x0, {0x9, 0x7f}, {0x2, 0x1}, 0x20, [0x6, 0x4, 0x0, 0x4, 0x2, 0x3ff, 0x0, 0x1a3e0, 0x0, 0x2, 0x2, 0x8, 0x2, 0x73ad, 0x9]}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0xed45, 0x0, 0x0, 0x0, 0xffffffffffffffff}, &(0x7f0000000280), 0x0) 00:44:52 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(0x0, r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:52 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:52 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x34, r2, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x600048c5}, 0x8000) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) eventfd2(0x76, 0x0) (async) socket(0xb, 0x1, 0x4) (async) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3) [ 3376.140769] nbd: must specify at least one socket 00:44:52 executing program 2: unshare(0x18060b80) 00:44:52 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 2: unshare(0x18060b80) unshare(0x18060b80) (async) 00:44:53 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(0x0, r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:53 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x80000000000, 0x0, 0x0, 0x100000, 0x0, 0x8}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffff6808, 0x2, 0x3, 0x0, 0x200}, &(0x7f0000000280), 0x0) r1 = epoll_create1(0x0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) clock_gettime(0x0, &(0x7f0000000180)={0x0, 0x0}) pselect6(0x40, &(0x7f0000000040)={0x2, 0x8, 0xcde, 0x1, 0x6, 0x5, 0x7f, 0x2}, &(0x7f0000000080)={0x4, 0x6, 0x400, 0x0, 0xfffffffffffffffb, 0x6d71a82, 0x5, 0x9}, &(0x7f0000000380)={0x19, 0x401, 0x3, 0x100000001, 0x4, 0x2, 0x9, 0x100}, &(0x7f00000000c0)={r3, r4+10000000}, &(0x7f00000002c0)={&(0x7f0000000240)={[0xffffffffffffffff]}, 0x8}) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f0000000000)={0x8}) r5 = epoll_create1(0x0) epoll_pwait(r5, &(0x7f00000001c0)=[{}, {}, {}, {}, {}], 0x5, 0x80000000, &(0x7f00000003c0)={[0x3]}, 0x8) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) setsockopt$MRT6_ADD_MIF(r7, 0x29, 0xca, &(0x7f0000000400)={0xffffffffffffffff, 0x1, 0x6, 0x0, 0x9}, 0xc) ioctl$KVM_S390_INTERRUPT_CPU(r6, 0x4010ae94, &(0x7f0000000300)={0x7, 0x5}) epoll_create1(0x80000) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000002080), 0x0, 0x0) waitid$P_PIDFD(0x3, 0xffffffffffffffff, &(0x7f00000020c0), 0x4, &(0x7f0000002140)) epoll_ctl$EPOLL_CTL_MOD(r2, 0x3, r0, &(0x7f0000000340)={0x50002008}) [ 3376.276842] nbd: must specify at least one socket 00:44:53 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xf) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000200)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x1c, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}]}, 0x1c}, 0x1, 0x0, 0x0, 0x41}, 0x4000000) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x24, r1, 0x10, 0x70bd26, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}, 0x1, 0x0, 0x0, 0x20000011}, 0x4810) 00:44:53 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x34, r2, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x600048c5}, 0x8000) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) eventfd2(0x76, 0x0) socket(0xb, 0x1, 0x4) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) (async) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x34, r2, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x600048c5}, 0x8000) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) eventfd2(0x76, 0x0) (async) socket(0xb, 0x1, 0x4) (async) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r1, 0xc33a4a742314f40f}, 0x14}}, 0x0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3) (async) 00:44:53 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 2: unshare(0x1c000400) 00:44:53 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(0x0, r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:53 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r2 = socket$netlink(0x10, 0x3, 0x15) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000140)={"1d566186ff3c1887caa28fe7ece93869", 0x0, 0x0, {0xfff, 0x78}, {0x80, 0x3}, 0x8, [0x6, 0x0, 0x3, 0x10000, 0x7, 0xfffffffffffffffb, 0x6, 0x8, 0xae73, 0x7fff, 0x3, 0x401, 0x7, 0x7, 0x81, 0x5]}) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x40, r1, 0x100, 0x70bd29, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0x40}, 0x1, 0x0, 0x0, 0x4010}, 0x4000010) [ 3376.462883] nbd: must specify at least one socket 00:44:53 executing program 2: unshare(0x1c000400) 00:44:53 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="c68050f5ea08d957fa00d60a20000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:53 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:53 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x80000000000, 0x0, 0x0, 0x100000, 0x0, 0x8}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffff6808, 0x2, 0x3, 0x0, 0x200}, &(0x7f0000000280), 0x0) (async) r1 = epoll_create1(0x0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) clock_gettime(0x0, &(0x7f0000000180)={0x0, 0x0}) pselect6(0x40, &(0x7f0000000040)={0x2, 0x8, 0xcde, 0x1, 0x6, 0x5, 0x7f, 0x2}, &(0x7f0000000080)={0x4, 0x6, 0x400, 0x0, 0xfffffffffffffffb, 0x6d71a82, 0x5, 0x9}, &(0x7f0000000380)={0x19, 0x401, 0x3, 0x100000001, 0x4, 0x2, 0x9, 0x100}, &(0x7f00000000c0)={r3, r4+10000000}, &(0x7f00000002c0)={&(0x7f0000000240)={[0xffffffffffffffff]}, 0x8}) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f0000000000)={0x8}) r5 = epoll_create1(0x0) epoll_pwait(r5, &(0x7f00000001c0)=[{}, {}, {}, {}, {}], 0x5, 0x80000000, &(0x7f00000003c0)={[0x3]}, 0x8) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) (async) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) (async) setsockopt$MRT6_ADD_MIF(r7, 0x29, 0xca, &(0x7f0000000400)={0xffffffffffffffff, 0x1, 0x6, 0x0, 0x9}, 0xc) ioctl$KVM_S390_INTERRUPT_CPU(r6, 0x4010ae94, &(0x7f0000000300)={0x7, 0x5}) epoll_create1(0x80000) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000002080), 0x0, 0x0) (async) waitid$P_PIDFD(0x3, 0xffffffffffffffff, &(0x7f00000020c0), 0x4, &(0x7f0000002140)) (async) epoll_ctl$EPOLL_CTL_MOD(r2, 0x3, r0, &(0x7f0000000340)={0x50002008}) 00:44:53 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r2 = socket$netlink(0x10, 0x3, 0x15) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000140)={"1d566186ff3c1887caa28fe7ece93869", 0x0, 0x0, {0xfff, 0x78}, {0x80, 0x3}, 0x8, [0x6, 0x0, 0x3, 0x10000, 0x7, 0xfffffffffffffffb, 0x6, 0x8, 0xae73, 0x7fff, 0x3, 0x401, 0x7, 0x7, 0x81, 0x5]}) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x40, r1, 0x100, 0x70bd29, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0x40}, 0x1, 0x0, 0x0, 0x4010}, 0x4000010) socket$netlink(0x10, 0x3, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) socket$netlink(0x10, 0x3, 0x15) (async) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000140)={"1d566186ff3c1887caa28fe7ece93869", 0x0, 0x0, {0xfff, 0x78}, {0x80, 0x3}, 0x8, [0x6, 0x0, 0x3, 0x10000, 0x7, 0xfffffffffffffffb, 0x6, 0x8, 0xae73, 0x7fff, 0x3, 0x401, 0x7, 0x7, 0x81, 0x5]}) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x40, r1, 0x100, 0x70bd29, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0x40}, 0x1, 0x0, 0x0, 0x4010}, 0x4000010) (async) 00:44:53 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:53 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="c68050f5ea08d957fa00d60a20000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:53 executing program 2: unshare(0x1c000400) 00:44:53 executing program 2: r0 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x1) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000002080)={0x7, 0x401, 0x3f}) ioctl$ASHMEM_GET_NAME(0xffffffffffffffff, 0x81007702, &(0x7f0000002100)=""/4096) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) sched_rr_get_interval(r1, &(0x7f00000020c0)) unshare(0xc020c00) ioctl$KVM_SET_NESTED_STATE(0xffffffffffffffff, 0x4080aebf, &(0x7f0000000000)={{0x3, 0x0, 0x80, {0x0, 0xf000, 0x3}}, 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unshare(0x40000000) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f00000031c0)={&(0x7f0000003100)={0x10, 0x0, 0x0, 0x8100000}, 0xc, &(0x7f0000003180)={&(0x7f0000003140)={0x14, 0x0, 0x1, 0x70bd29, 0x25dfdbfb}, 0x14}, 0x1, 0x0, 0x0, 0x20004}, 0x20008000) unshare(0x30000100) 00:44:53 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:53 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="c68050f5ea08d957fa00d60a20000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:44:53 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:54 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:54 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r2 = socket$netlink(0x10, 0x3, 0x15) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r0, 0xc0c89425, &(0x7f0000000140)={"1d566186ff3c1887caa28fe7ece93869", 0x0, 0x0, {0xfff, 0x78}, {0x80, 0x3}, 0x8, [0x6, 0x0, 0x3, 0x10000, 0x7, 0xfffffffffffffffb, 0x6, 0x8, 0xae73, 0x7fff, 0x3, 0x401, 0x7, 0x7, 0x81, 0x5]}) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x40, r1, 0x100, 0x70bd29, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x5}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0x40}, 0x1, 0x0, 0x0, 0x4010}, 0x4000010) [ 3377.364118] IPVS: ftp: loaded support on port[0] = 21 00:44:54 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x80000000000, 0x0, 0x0, 0x100000, 0x0, 0x8}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffff6808, 0x2, 0x3, 0x0, 0x200}, &(0x7f0000000280), 0x0) (async) r1 = epoll_create1(0x0) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) clock_gettime(0x0, &(0x7f0000000180)={0x0, 0x0}) pselect6(0x40, &(0x7f0000000040)={0x2, 0x8, 0xcde, 0x1, 0x6, 0x5, 0x7f, 0x2}, &(0x7f0000000080)={0x4, 0x6, 0x400, 0x0, 0xfffffffffffffffb, 0x6d71a82, 0x5, 0x9}, &(0x7f0000000380)={0x19, 0x401, 0x3, 0x100000001, 0x4, 0x2, 0x9, 0x100}, &(0x7f00000000c0)={r3, r4+10000000}, &(0x7f00000002c0)={&(0x7f0000000240)={[0xffffffffffffffff]}, 0x8}) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f0000000000)={0x8}) (async) r5 = epoll_create1(0x0) epoll_pwait(r5, &(0x7f00000001c0)=[{}, {}, {}, {}, {}], 0x5, 0x80000000, &(0x7f00000003c0)={[0x3]}, 0x8) (async) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) setsockopt$MRT6_ADD_MIF(r7, 0x29, 0xca, &(0x7f0000000400)={0xffffffffffffffff, 0x1, 0x6, 0x0, 0x9}, 0xc) (async) ioctl$KVM_S390_INTERRUPT_CPU(r6, 0x4010ae94, &(0x7f0000000300)={0x7, 0x5}) (async) epoll_create1(0x80000) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000002080), 0x0, 0x0) waitid$P_PIDFD(0x3, 0xffffffffffffffff, &(0x7f00000020c0), 0x4, &(0x7f0000002140)) (async) epoll_ctl$EPOLL_CTL_MOD(r2, 0x3, r0, &(0x7f0000000340)={0x50002008}) 00:44:54 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="14000000", @ANYRES16=r1, @ANYBLOB="0ff426bd70000000000001020000"], 0x14}}, 0x0) 00:44:54 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:54 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000140), r0) socket(0x15, 0x5, 0x1) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) openat$khugepaged_scan(0xffffffffffffff9c, &(0x7f0000000540), 0x1, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)=ANY=[@ANYBLOB='(\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000030000000c00078008000100", @ANYRES32, @ANYBLOB="08001f0000000000"], 0x28}}, 0x0) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x20, r3, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x44004) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000480)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000440)={&(0x7f0000000400)={0x20, r3, 0x300, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}]}, 0x20}, 0x1, 0x0, 0x0, 0x8000}, 0x40) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000240)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_SIGNAL(0xffffffffffffffff, 0xc01064c5, &(0x7f0000000380)={&(0x7f00000002c0)=[r5, 0x0], 0x2}) r6 = socket$nl_generic(0x10, 0x3, 0x10) socket$nl_generic(0x10, 0x3, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) ioctl$sock_SIOCBRADDBR(r7, 0x89a0, &(0x7f00000004c0)='veth0_to_team\x00') sendmsg$MPTCP_PM_CMD_GET_ADDR(r6, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)={0x40, r1, 0x100, 0x70bd2d, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x800}, 0x8800) 00:44:54 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:54 executing program 2: r0 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x1) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000002080)={0x7, 0x401, 0x3f}) ioctl$ASHMEM_GET_NAME(0xffffffffffffffff, 0x81007702, &(0x7f0000002100)=""/4096) (async) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) sched_rr_get_interval(r1, &(0x7f00000020c0)) unshare(0xc020c00) ioctl$KVM_SET_NESTED_STATE(0xffffffffffffffff, 0x4080aebf, &(0x7f0000000000)={{0x3, 0x0, 0x80, {0x0, 0xf000, 0x3}}, 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unshare(0x40000000) (async, rerun: 64) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f00000031c0)={&(0x7f0000003100)={0x10, 0x0, 0x0, 0x8100000}, 0xc, &(0x7f0000003180)={&(0x7f0000003140)={0x14, 0x0, 0x1, 0x70bd29, 0x25dfdbfb}, 0x14}, 0x1, 0x0, 0x0, 0x20004}, 0x20008000) (async, rerun: 64) unshare(0x30000100) 00:44:54 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3378.175833] nbd: must specify a device to reconfigure 00:44:54 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000140), r0) (async) socket(0x15, 0x5, 0x1) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async) openat$khugepaged_scan(0xffffffffffffff9c, &(0x7f0000000540), 0x1, 0x0) (async) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)=ANY=[@ANYBLOB='(\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000030000000c00078008000100", @ANYRES32, @ANYBLOB="08001f0000000000"], 0x28}}, 0x0) (async) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x20, r3, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x44004) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000480)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000440)={&(0x7f0000000400)={0x20, r3, 0x300, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}]}, 0x20}, 0x1, 0x0, 0x0, 0x8000}, 0x40) (async) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000240)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_SIGNAL(0xffffffffffffffff, 0xc01064c5, &(0x7f0000000380)={&(0x7f00000002c0)=[r5, 0x0], 0x2}) (async) r6 = socket$nl_generic(0x10, 0x3, 0x10) (async) socket$nl_generic(0x10, 0x3, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) ioctl$sock_SIOCBRADDBR(r7, 0x89a0, &(0x7f00000004c0)='veth0_to_team\x00') (async) sendmsg$MPTCP_PM_CMD_GET_ADDR(r6, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)={0x40, r1, 0x100, 0x70bd2d, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x800}, 0x8800) 00:44:54 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:54 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="14000000", @ANYRES16=r1, @ANYBLOB="0ff426bd70000000000001020000"], 0x14}}, 0x0) [ 3378.250808] IPVS: ftp: loaded support on port[0] = 21 [ 3378.256407] nbd: must specify at least one socket 00:44:55 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:55 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000140), r0) socket(0x15, 0x5, 0x1) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async) openat$khugepaged_scan(0xffffffffffffff9c, &(0x7f0000000540), 0x1, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)=ANY=[@ANYBLOB='(\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000030000000c00078008000100", @ANYRES32, @ANYBLOB="08001f0000000000"], 0x28}}, 0x0) (async) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000001c0)={&(0x7f0000000180)={0x20, r3, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x44004) (async) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000480)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000440)={&(0x7f0000000400)={0x20, r3, 0x300, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}]}, 0x20}, 0x1, 0x0, 0x0, 0x8000}, 0x40) (async) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000240)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_SIGNAL(0xffffffffffffffff, 0xc01064c5, &(0x7f0000000380)={&(0x7f00000002c0)=[r5, 0x0], 0x2}) (async) r6 = socket$nl_generic(0x10, 0x3, 0x10) (async) socket$nl_generic(0x10, 0x3, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) ioctl$sock_SIOCBRADDBR(r7, 0x89a0, &(0x7f00000004c0)='veth0_to_team\x00') (async) sendmsg$MPTCP_PM_CMD_GET_ADDR(r6, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)={0x40, r1, 0x100, 0x70bd2d, 0x25dfdbff, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x800}, 0x8800) [ 3378.498723] nbd: must specify a device to reconfigure [ 3378.500398] IPVS: ftp: loaded support on port[0] = 21 [ 3378.600721] IPVS: ftp: loaded support on port[0] = 21 [ 3378.672510] IPVS: ftp: loaded support on port[0] = 21 [ 3378.751131] IPVS: ftp: loaded support on port[0] = 21 [ 3378.828297] IPVS: ftp: loaded support on port[0] = 21 [ 3378.905582] IPVS: ftp: loaded support on port[0] = 21 00:44:55 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x3}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3}, &(0x7f0000000280), 0x0) 00:44:55 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="14000000", @ANYRES16=r1, @ANYBLOB="0ff426bd70000000000001020000"], 0x14}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="14000000", @ANYRES16=r1, @ANYBLOB="0ff426bd70000000000001020000"], 0x14}}, 0x0) (async) 00:44:55 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:55 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:55 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000080)={'lo\x00', {0x2, 0x4e21, @local}}) [ 3378.982748] IPVS: ftp: loaded support on port[0] = 21 [ 3379.106846] nbd: must specify at least one socket [ 3379.124393] nbd: must specify at least one socket 00:44:55 executing program 2: r0 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x1) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000002080)={0x7, 0x401, 0x3f}) ioctl$ASHMEM_GET_NAME(0xffffffffffffffff, 0x81007702, &(0x7f0000002100)=""/4096) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) sched_rr_get_interval(r1, &(0x7f00000020c0)) unshare(0xc020c00) ioctl$KVM_SET_NESTED_STATE(0xffffffffffffffff, 0x4080aebf, &(0x7f0000000000)={{0x3, 0x0, 0x80, {0x0, 0xf000, 0x3}}, 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unshare(0x40000000) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f00000031c0)={&(0x7f0000003100)={0x10, 0x0, 0x0, 0x8100000}, 0xc, &(0x7f0000003180)={&(0x7f0000003140)={0x14, 0x0, 0x1, 0x70bd29, 0x25dfdbfb}, 0x14}, 0x1, 0x0, 0x0, 0x20004}, 0x20008000) unshare(0x30000100) ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x1) (async) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000002080)={0x7, 0x401, 0x3f}) (async) ioctl$ASHMEM_GET_NAME(0xffffffffffffffff, 0x81007702, &(0x7f0000002100)=""/4096) (async) getpgrp(0x0) (async) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) sched_rr_get_interval(r1, &(0x7f00000020c0)) (async) unshare(0xc020c00) (async) ioctl$KVM_SET_NESTED_STATE(0xffffffffffffffff, 0x4080aebf, &(0x7f0000000000)={{0x3, 0x0, 0x80, {0x0, 0xf000, 0x3}}, 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(async) unshare(0x40000000) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f00000031c0)={&(0x7f0000003100)={0x10, 0x0, 0x0, 0x8100000}, 0xc, &(0x7f0000003180)={&(0x7f0000003140)={0x14, 0x0, 0x1, 0x70bd29, 0x25dfdbfb}, 0x14}, 0x1, 0x0, 0x0, 0x20004}, 0x20008000) (async) unshare(0x30000100) (async) 00:44:55 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:55 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x3}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3}, &(0x7f0000000280), 0x0) 00:44:55 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000080)={'lo\x00', {0x2, 0x4e21, @local}}) 00:44:55 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:55 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r3, 0xc01064c4, &(0x7f0000000140)={&(0x7f0000000000)=[0x0, 0x0, 0x0, 0x0], 0x4}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000a000a0028275d2a40400000"], 0x20}}, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) 00:44:55 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 32) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x3}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3}, &(0x7f0000000280), 0x0) (rerun: 32) 00:44:55 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:55 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000080)={'lo\x00', {0x2, 0x4e21, @local}}) 00:44:56 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r3, 0xc01064c4, &(0x7f0000000140)={&(0x7f0000000000)=[0x0, 0x0, 0x0, 0x0], 0x4}) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000a000a0028275d2a40400000"], 0x20}}, 0x0) (async) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) [ 3379.300347] IPVS: ftp: loaded support on port[0] = 21 00:44:56 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) setsockopt$sock_void(r0, 0x1, 0x3f, 0x0, 0x0) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x80000000000, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) pselect6(0x40, &(0x7f0000000040)={0x1, 0x6, 0x7f, 0x1, 0x2, 0x7fff, 0x6, 0x4}, &(0x7f0000000080)={0x2, 0x7, 0xfffffffffffeffff, 0xee, 0xfffffffffffffffb, 0x100000000, 0x7fffffffffffffff, 0x80}, &(0x7f00000000c0)={0x10000, 0x7fffffff, 0x2, 0x7, 0x8, 0xff, 0x20, 0x5}, &(0x7f0000000100)={0x0, 0x989680}, &(0x7f0000000180)={&(0x7f0000000140)={[0x4]}, 0x8}) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r2 = socket$igmp6(0xa, 0x3, 0x2) sendto(r2, 0x0, 0x0, 0x0, 0x0, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) shutdown(r1, 0x0) 00:44:56 executing program 2: ioctl$KVM_S390_UCAS_MAP(0xffffffffffffffff, 0x4018ae50, &(0x7f0000000000)={0xfffffffff8d7317e, 0x80, 0xeb2}) unshare(0x900) unshare(0x52010300) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) syz_open_dev$vcsn(&(0x7f0000000040), 0x4, 0x28300) syz_open_dev$vcsn(&(0x7f0000000080), 0x9, 0x400400) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000140)={0xffffffffffffffff, 0xe, 0x0}, 0xfffffffffffffcc8) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) 00:44:56 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:56 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:56 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r3, 0xc01064c4, &(0x7f0000000140)={&(0x7f0000000000)=[0x0, 0x0, 0x0, 0x0], 0x4}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000a000a0028275d2a40400000"], 0x20}}, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r3, 0xc01064c4, &(0x7f0000000140)={&(0x7f0000000000)=[0x0, 0x0, 0x0, 0x0], 0x4}) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000a000a0028275d2a40400000"], 0x20}}, 0x0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r4, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async) 00:44:56 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) setsockopt$sock_void(r0, 0x1, 0x3f, 0x0, 0x0) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x80000000000, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) pselect6(0x40, &(0x7f0000000040)={0x1, 0x6, 0x7f, 0x1, 0x2, 0x7fff, 0x6, 0x4}, &(0x7f0000000080)={0x2, 0x7, 0xfffffffffffeffff, 0xee, 0xfffffffffffffffb, 0x100000000, 0x7fffffffffffffff, 0x80}, &(0x7f00000000c0)={0x10000, 0x7fffffff, 0x2, 0x7, 0x8, 0xff, 0x20, 0x5}, &(0x7f0000000100)={0x0, 0x989680}, &(0x7f0000000180)={&(0x7f0000000140)={[0x4]}, 0x8}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) setsockopt$sock_void(r0, 0x1, 0x3f, 0x0, 0x0) (async) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x80000000000, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) pselect6(0x40, &(0x7f0000000040)={0x1, 0x6, 0x7f, 0x1, 0x2, 0x7fff, 0x6, 0x4}, &(0x7f0000000080)={0x2, 0x7, 0xfffffffffffeffff, 0xee, 0xfffffffffffffffb, 0x100000000, 0x7fffffffffffffff, 0x80}, &(0x7f00000000c0)={0x10000, 0x7fffffff, 0x2, 0x7, 0x8, 0xff, 0x20, 0x5}, &(0x7f0000000100)={0x0, 0x989680}, &(0x7f0000000180)={&(0x7f0000000140)={[0x4]}, 0x8}) (async) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) r2 = socket$igmp6(0xa, 0x3, 0x2) sendto(r2, 0x0, 0x0, 0x0, 0x0, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async, rerun: 64) shutdown(r1, 0x0) (rerun: 64) 00:44:56 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:56 executing program 2: ioctl$KVM_S390_UCAS_MAP(0xffffffffffffffff, 0x4018ae50, &(0x7f0000000000)={0xfffffffff8d7317e, 0x80, 0xeb2}) (async) unshare(0x900) (async) unshare(0x52010300) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000040), 0x4, 0x28300) (async) syz_open_dev$vcsn(&(0x7f0000000080), 0x9, 0x400400) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000140)={0xffffffffffffffff, 0xe, 0x0}, 0xfffffffffffffcc8) (async) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) 00:44:56 executing program 3: socketpair(0xa, 0x3, 0x4, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$LOOP_SET_STATUS(r1, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x80000001, 0x12, 0x1f, 0x4, "c70b283e01e2c647d95e106dadeca1ea90202f1b1c1c39516fe0ec9ddcd3c9457a46ab3d68fd4d1c8a673b3c62ce8aaa3d342b07afe2cd70e1f300e359ad4433", "620ec0fc2b0e433f2db84d3d9de93821c74a97b566cae95c59579ef827fc4f07", [0x2]}) ioctl$sock_SIOCSIFVLAN_GET_VLAN_REALDEV_NAME_CMD(r0, 0x8983, &(0x7f0000000140)={0x8, 'nr0\x00', {'ip6gre0\x00'}, 0x7}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0xc33a4a742314f40f, 0x0, 0x10, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}]}, 0x20}}, 0x4000000) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) 00:44:56 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) setsockopt$sock_void(r0, 0x1, 0x3f, 0x0, 0x0) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x80000000000, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) pselect6(0x40, &(0x7f0000000040)={0x1, 0x6, 0x7f, 0x1, 0x2, 0x7fff, 0x6, 0x4}, &(0x7f0000000080)={0x2, 0x7, 0xfffffffffffeffff, 0xee, 0xfffffffffffffffb, 0x100000000, 0x7fffffffffffffff, 0x80}, &(0x7f00000000c0)={0x10000, 0x7fffffff, 0x2, 0x7, 0x8, 0xff, 0x20, 0x5}, &(0x7f0000000100)={0x0, 0x989680}, &(0x7f0000000180)={&(0x7f0000000140)={[0x4]}, 0x8}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) setsockopt$sock_void(r0, 0x1, 0x3f, 0x0, 0x0) (async) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x80000000000, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) pselect6(0x40, &(0x7f0000000040)={0x1, 0x6, 0x7f, 0x1, 0x2, 0x7fff, 0x6, 0x4}, &(0x7f0000000080)={0x2, 0x7, 0xfffffffffffeffff, 0xee, 0xfffffffffffffffb, 0x100000000, 0x7fffffffffffffff, 0x80}, &(0x7f00000000c0)={0x10000, 0x7fffffff, 0x2, 0x7, 0x8, 0xff, 0x20, 0x5}, &(0x7f0000000100)={0x0, 0x989680}, &(0x7f0000000180)={&(0x7f0000000140)={[0x4]}, 0x8}) (async) 00:44:56 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) r2 = socket$igmp6(0xa, 0x3, 0x2) sendto(r2, 0x0, 0x0, 0x0, 0x0, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) shutdown(r1, 0x0) [ 3379.695333] nbd: must specify at least one socket 00:44:56 executing program 4: write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='6\x00', 0x2) r0 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r0, 0x7, 0xffffffffffffffff, 0x0) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) getpgrp(r1) r2 = syz_open_dev$vcsn(&(0x7f0000000140), 0x1e92, 0x0) ioctl$KVM_SMI(r2, 0xaeb7) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) r3 = syz_open_dev$ndb(&(0x7f0000000040), 0x0, 0x40000) r4 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r4, 0x7, 0xffffffffffffffff, 0x0) getpgid(r0) ioctl$DRM_IOCTL_SYNCOBJ_DESTROY(r2, 0xc00864c0, &(0x7f00000000c0)) kcmp$KCMP_EPOLL_TFD(0xffffffffffffffff, r0, 0x7, 0xffffffffffffffff, &(0x7f0000000080)={r2, r3, 0x7ff}) socket$phonet_pipe(0x23, 0x5, 0x2) 00:44:56 executing program 2: ioctl$KVM_S390_UCAS_MAP(0xffffffffffffffff, 0x4018ae50, &(0x7f0000000000)={0xfffffffff8d7317e, 0x80, 0xeb2}) unshare(0x900) unshare(0x52010300) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) syz_open_dev$vcsn(&(0x7f0000000040), 0x4, 0x28300) syz_open_dev$vcsn(&(0x7f0000000080), 0x9, 0x400400) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000140)={0xffffffffffffffff, 0xe, 0x0}, 0xfffffffffffffcc8) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) ioctl$KVM_S390_UCAS_MAP(0xffffffffffffffff, 0x4018ae50, &(0x7f0000000000)={0xfffffffff8d7317e, 0x80, 0xeb2}) (async) unshare(0x900) (async) unshare(0x52010300) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000040), 0x4, 0x28300) (async) syz_open_dev$vcsn(&(0x7f0000000080), 0x9, 0x400400) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000140)={0xffffffffffffffff, 0xe, 0x0}, 0xfffffffffffffcc8) (async) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) (async) 00:44:56 executing program 3: socketpair(0xa, 0x3, 0x4, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_SET_STATUS(r1, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x80000001, 0x12, 0x1f, 0x4, "c70b283e01e2c647d95e106dadeca1ea90202f1b1c1c39516fe0ec9ddcd3c9457a46ab3d68fd4d1c8a673b3c62ce8aaa3d342b07afe2cd70e1f300e359ad4433", "620ec0fc2b0e433f2db84d3d9de93821c74a97b566cae95c59579ef827fc4f07", [0x2]}) ioctl$sock_SIOCSIFVLAN_GET_VLAN_REALDEV_NAME_CMD(r0, 0x8983, &(0x7f0000000140)={0x8, 'nr0\x00', {'ip6gre0\x00'}, 0x7}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0xc33a4a742314f40f, 0x0, 0x10, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}]}, 0x20}}, 0x4000000) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000080)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_QUERY(0xffffffffffffffff, 0xc01864cb, &(0x7f0000000140)={&(0x7f00000000c0)=[0x0, r1, 0x0, r2], &(0x7f0000000100)=[0x1f, 0xffffffffffffffff, 0x40, 0x9f5, 0x7fff, 0x3, 0x3, 0x9b98], 0x4}) 00:44:56 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:56 executing program 4: write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='6\x00', 0x2) (async) r0 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r0, 0x7, 0xffffffffffffffff, 0x0) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) getpgrp(r1) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000140), 0x1e92, 0x0) ioctl$KVM_SMI(r2, 0xaeb7) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) r3 = syz_open_dev$ndb(&(0x7f0000000040), 0x0, 0x40000) (async) r4 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r4, 0x7, 0xffffffffffffffff, 0x0) getpgid(r0) (async) ioctl$DRM_IOCTL_SYNCOBJ_DESTROY(r2, 0xc00864c0, &(0x7f00000000c0)) kcmp$KCMP_EPOLL_TFD(0xffffffffffffffff, r0, 0x7, 0xffffffffffffffff, &(0x7f0000000080)={r2, r3, 0x7ff}) socket$phonet_pipe(0x23, 0x5, 0x2) 00:44:56 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:56 executing program 2: unshare(0xc000400) unshare(0xa000600) 00:44:56 executing program 3: socketpair(0xa, 0x3, 0x4, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$LOOP_SET_STATUS(r1, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x80000001, 0x12, 0x1f, 0x4, "c70b283e01e2c647d95e106dadeca1ea90202f1b1c1c39516fe0ec9ddcd3c9457a46ab3d68fd4d1c8a673b3c62ce8aaa3d342b07afe2cd70e1f300e359ad4433", "620ec0fc2b0e433f2db84d3d9de93821c74a97b566cae95c59579ef827fc4f07", [0x2]}) ioctl$sock_SIOCSIFVLAN_GET_VLAN_REALDEV_NAME_CMD(r0, 0x8983, &(0x7f0000000140)={0x8, 'nr0\x00', {'ip6gre0\x00'}, 0x7}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0xc33a4a742314f40f, 0x0, 0x10, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}]}, 0x20}}, 0x4000000) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) socketpair(0xa, 0x3, 0x4, &(0x7f0000000000)) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_SET_STATUS(r1, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x80000001, 0x12, 0x1f, 0x4, "c70b283e01e2c647d95e106dadeca1ea90202f1b1c1c39516fe0ec9ddcd3c9457a46ab3d68fd4d1c8a673b3c62ce8aaa3d342b07afe2cd70e1f300e359ad4433", "620ec0fc2b0e433f2db84d3d9de93821c74a97b566cae95c59579ef827fc4f07", [0x2]}) (async) ioctl$sock_SIOCSIFVLAN_GET_VLAN_REALDEV_NAME_CMD(r0, 0x8983, &(0x7f0000000140)={0x8, 'nr0\x00', {'ip6gre0\x00'}, 0x7}) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0xc33a4a742314f40f, 0x0, 0x10, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}]}, 0x20}}, 0x4000000) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async) 00:44:56 executing program 4: write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='6\x00', 0x2) (async) r0 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r0, 0x7, 0xffffffffffffffff, 0x0) r1 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r1, 0x7, 0xffffffffffffffff, 0x0) (async) getpgrp(r1) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000140), 0x1e92, 0x0) ioctl$KVM_SMI(r2, 0xaeb7) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) r3 = syz_open_dev$ndb(&(0x7f0000000040), 0x0, 0x40000) (async) r4 = getpgrp(0x0) kcmp$KCMP_EPOLL_TFD(0x0, r4, 0x7, 0xffffffffffffffff, 0x0) (async) getpgid(r0) (async) ioctl$DRM_IOCTL_SYNCOBJ_DESTROY(r2, 0xc00864c0, &(0x7f00000000c0)) (async) kcmp$KCMP_EPOLL_TFD(0xffffffffffffffff, r0, 0x7, 0xffffffffffffffff, &(0x7f0000000080)={r2, r3, 0x7ff}) (async) socket$phonet_pipe(0x23, 0x5, 0x2) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) (async) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000080)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_QUERY(0xffffffffffffffff, 0xc01864cb, &(0x7f0000000140)={&(0x7f00000000c0)=[0x0, r1, 0x0, r2], &(0x7f0000000100)=[0x1f, 0xffffffffffffffff, 0x40, 0x9f5, 0x7fff, 0x3, 0x3, 0x9b98], 0x4}) 00:44:56 executing program 2: unshare(0xc000400) (async) unshare(0xa000600) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000080)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_QUERY(0xffffffffffffffff, 0xc01864cb, &(0x7f0000000140)={&(0x7f00000000c0)=[0x0, r1, 0x0, r2], &(0x7f0000000100)=[0x1f, 0xffffffffffffffff, 0x40, 0x9f5, 0x7fff, 0x3, 0x3, 0x9b98], 0x4}) 00:44:56 executing program 2: unshare(0xc000400) unshare(0xa000600) 00:44:56 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:56 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:56 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f0000000000), &(0x7f0000000040)=0x4) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x1}, &(0x7f0000000280), 0x0) 00:44:56 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000300000000c7ff0600f9ffffff00000000"], 0x20}}, 0x0) 00:44:56 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_SET_LAPIC(r0, 0x4400ae8f, &(0x7f0000000000)={"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"}) 00:44:56 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f0000000000), &(0x7f0000000040)=0x4) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x1}, &(0x7f0000000280), 0x0) 00:44:56 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x5, 0x2, 0x4, 0x8, 0x4, r3, 0x3, '\x00', 0x0, r4, 0x2, 0x2, 0x4}, 0x48) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) r6 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), r2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r5, &(0x7f0000000280)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0xa9300}, 0xc, &(0x7f0000000240)={&(0x7f0000000200)={0x40, r6, 0x400, 0x70bd2c, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x7f}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x1}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @initdev={0xac, 0x1e, 0x0, 0x0}}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x20008004}, 0x20000010) setsockopt$MRT6_DONE(r2, 0x29, 0xc9, 0x0, 0x0) ioctl$UFFDIO_REGISTER(r2, 0xc020aa00, &(0x7f0000000140)={{&(0x7f0000ff9000/0x4000)=nil, 0x4000}, 0x2}) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="c585b863", @ANYRES16=r1, @ANYBLOB="00042bbd7000fddbdf25030000000c000180060001000a000000080002000300000008000300030000000800030008000000"], 0x38}, 0x1, 0x0, 0x0, 0x400d0}, 0x810) [ 3380.202629] nla_parse: 20 callbacks suppressed [ 3380.202638] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:56 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f0000000000), &(0x7f0000000040)=0x4) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x2}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x1}, &(0x7f0000000280), 0x0) 00:44:56 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_SET_LAPIC(r0, 0x4400ae8f, &(0x7f0000000000)={"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"}) [ 3380.256001] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:57 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:57 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:57 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) (async, rerun: 64) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 64) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000300000000c7ff0600f9ffffff00000000"], 0x20}}, 0x0) 00:44:57 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) (async) bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x5, 0x2, 0x4, 0x8, 0x4, r3, 0x3, '\x00', 0x0, r4, 0x2, 0x2, 0x4}, 0x48) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) r6 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), r2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r5, &(0x7f0000000280)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0xa9300}, 0xc, &(0x7f0000000240)={&(0x7f0000000200)={0x40, r6, 0x400, 0x70bd2c, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x7f}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x1}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @initdev={0xac, 0x1e, 0x0, 0x0}}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x20008004}, 0x20000010) setsockopt$MRT6_DONE(r2, 0x29, 0xc9, 0x0, 0x0) (async) ioctl$UFFDIO_REGISTER(r2, 0xc020aa00, &(0x7f0000000140)={{&(0x7f0000ff9000/0x4000)=nil, 0x4000}, 0x2}) (async) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="c585b863", @ANYRES16=r1, @ANYBLOB="00042bbd7000fddbdf25030000000c000180060001000a000000080002000300000008000300030000000800030008000000"], 0x38}, 0x1, 0x0, 0x0, 0x400d0}, 0x810) 00:44:57 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0xfffffffffffffffc}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:57 executing program 2: unshare(0xc000400) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_SET_LAPIC(r0, 0x4400ae8f, &(0x7f0000000000)={"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"}) 00:44:57 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 32) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0xfffffffffffffffc}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (rerun: 32) 00:44:57 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x5, 0x2, 0x4, 0x8, 0x4, r3, 0x3, '\x00', 0x0, r4, 0x2, 0x2, 0x4}, 0x48) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) (async) r6 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), r2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r5, &(0x7f0000000280)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0xa9300}, 0xc, &(0x7f0000000240)={&(0x7f0000000200)={0x40, r6, 0x400, 0x70bd2c, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x7f}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x1}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @initdev={0xac, 0x1e, 0x0, 0x0}}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x40}, 0x1, 0x0, 0x0, 0x20008004}, 0x20000010) setsockopt$MRT6_DONE(r2, 0x29, 0xc9, 0x0, 0x0) ioctl$UFFDIO_REGISTER(r2, 0xc020aa00, &(0x7f0000000140)={{&(0x7f0000ff9000/0x4000)=nil, 0x4000}, 0x2}) (async, rerun: 32) sendmsg$MPTCP_PM_CMD_GET_ADDR(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="c585b863", @ANYRES16=r1, @ANYBLOB="00042bbd7000fddbdf25030000000c000180060001000a000000080002000300000008000300030000000800030008000000"], 0x38}, 0x1, 0x0, 0x0, 0x400d0}, 0x810) (rerun: 32) 00:44:57 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$LOOP_GET_STATUS64(r0, 0x4c05, &(0x7f0000000000)) unshare(0xc000400) [ 3380.418741] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3380.449795] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:44:57 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:57 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:57 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0xfffffffffffffffc}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:57 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:57 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_GET_STATUS64(r0, 0x4c05, &(0x7f0000000000)) (async) unshare(0xc000400) [ 3380.661948] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3380.682680] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3380.758895] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3380.778006] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:57 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000300000000c7ff0600f9ffffff00000000"], 0x20}}, 0x0) 00:44:57 executing program 4: ioctl$sock_SIOCGIFVLAN_DEL_VLAN_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x1, 'ipvlan0\x00', {}, 0x1}) socket$phonet_pipe(0x23, 0x5, 0x2) 00:44:57 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$LOOP_GET_STATUS64(r0, 0x4c05, &(0x7f0000000000)) unshare(0xc000400) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_GET_STATUS64(r0, 0x4c05, &(0x7f0000000000)) (async) unshare(0xc000400) (async) 00:44:57 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:57 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:57 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={0xffffffffffffffff, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:57 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:57 executing program 4: ioctl$sock_SIOCGIFVLAN_DEL_VLAN_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x1, 'ipvlan0\x00', {}, 0x1}) socket$phonet_pipe(0x23, 0x5, 0x2) 00:44:58 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) read$eventfd(r0, &(0x7f0000000000), 0x8) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) 00:44:58 executing program 4: ioctl$sock_SIOCGIFVLAN_DEL_VLAN_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x1, 'ipvlan0\x00', {}, 0x1}) socket$phonet_pipe(0x23, 0x5, 0x2) [ 3381.283004] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3381.313205] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:44:58 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) read$eventfd(r0, &(0x7f0000000000), 0x8) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) unshare(0xc000400) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) read$eventfd(r0, &(0x7f0000000000), 0x8) (async) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) (async) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000000)={0x6, 0x9743, 0x65}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYRES32=r1, @ANYRES16=r1, @ANYBLOB="0ff42770e0ba0000000001000000c7ff0600ff00000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x20000001}, 0x0) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:44:58 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) read$eventfd(r0, &(0x7f0000000000), 0x8) (async) ioctl$KVM_GET_TSC_KHZ(r0, 0xaea3) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000000)={0x6, 0x9743, 0x65}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) syz_genetlink_get_family_id$mptcp(&(0x7f0000000340), r0) r1 = bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x2, 0x1, 0x6, 0x5, 0x1002, 0x1, 0xfffffffe, '\x00', 0x0, 0xffffffffffffffff, 0x4, 0x0, 0x3}, 0x48) bpf$PROG_LOAD(0x5, &(0x7f0000000240)={0x5, 0xa, &(0x7f0000000040)=@framed={{0x18, 0x0, 0x0, 0x0, 0x401, 0x0, 0x0, 0x0, 0x95}, [@initr0={0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, @exit, @func={0x85, 0x0, 0x1, 0x0, 0x5}, @alu={0x7, 0x0, 0x8, 0xa, 0x4, 0x1}, @map_fd={0x18, 0x1, 0x1, 0x0, r1}]}, &(0x7f00000000c0)='GPL\x00', 0xfffffc00, 0x70, &(0x7f0000000100)=""/112, 0x41000, 0x0, '\x00', 0x0, 0x9, 0xffffffffffffffff, 0x8, &(0x7f0000000180)={0x3, 0x5}, 0x8, 0x10, &(0x7f00000001c0)={0x4, 0xe, 0x6, 0x9}, 0x10, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, &(0x7f0000000200)=[0x1, 0x1]}, 0x80) [ 3381.518877] nbd: must specify at least one socket 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYRES32=r1, @ANYRES16=r1, @ANYBLOB="0ff42770e0ba0000000001000000c7ff0600ff00000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x20000001}, 0x0) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000000)={0x6, 0x9743, 0x65}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_S390_UCAS_UNMAP(r0, 0x4018ae51, &(0x7f0000000000)={0x6, 0x9743, 0x65}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:44:58 executing program 2: ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000000)={0x8, 0xffff, 0x6}) unshare(0xc000400) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='3\x00', 0x2) [ 3381.626097] nbd: must specify at least one socket 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYRES32=r1, @ANYRES16=r1, @ANYBLOB="0ff42770e0ba0000000001000000c7ff0600ff00000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x20000001}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYRES32=r1, @ANYRES16=r1, @ANYBLOB="0ff42770e0ba0000000001000000c7ff0600ff00000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x20000001}, 0x0) (async) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) syz_genetlink_get_family_id$mptcp(&(0x7f0000000340), r0) r1 = bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x2, 0x1, 0x6, 0x5, 0x1002, 0x1, 0xfffffffe, '\x00', 0x0, 0xffffffffffffffff, 0x4, 0x0, 0x3}, 0x48) bpf$PROG_LOAD(0x5, &(0x7f0000000240)={0x5, 0xa, &(0x7f0000000040)=@framed={{0x18, 0x0, 0x0, 0x0, 0x401, 0x0, 0x0, 0x0, 0x95}, [@initr0={0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, @exit, @func={0x85, 0x0, 0x1, 0x0, 0x5}, @alu={0x7, 0x0, 0x8, 0xa, 0x4, 0x1}, @map_fd={0x18, 0x1, 0x1, 0x0, r1}]}, &(0x7f00000000c0)='GPL\x00', 0xfffffc00, 0x70, &(0x7f0000000100)=""/112, 0x41000, 0x0, '\x00', 0x0, 0x9, 0xffffffffffffffff, 0x8, &(0x7f0000000180)={0x3, 0x5}, 0x8, 0x10, &(0x7f00000001c0)={0x4, 0xe, 0x6, 0x9}, 0x10, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, &(0x7f0000000200)=[0x1, 0x1]}, 0x80) socket$netlink(0x10, 0x3, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000340), r0) (async) bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x2, 0x1, 0x6, 0x5, 0x1002, 0x1, 0xfffffffe, '\x00', 0x0, 0xffffffffffffffff, 0x4, 0x0, 0x3}, 0x48) (async) bpf$PROG_LOAD(0x5, &(0x7f0000000240)={0x5, 0xa, &(0x7f0000000040)=@framed={{0x18, 0x0, 0x0, 0x0, 0x401, 0x0, 0x0, 0x0, 0x95}, [@initr0={0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, @exit, @func={0x85, 0x0, 0x1, 0x0, 0x5}, @alu={0x7, 0x0, 0x8, 0xa, 0x4, 0x1}, @map_fd={0x18, 0x1, 0x1, 0x0, r1}]}, &(0x7f00000000c0)='GPL\x00', 0xfffffc00, 0x70, &(0x7f0000000100)=""/112, 0x41000, 0x0, '\x00', 0x0, 0x9, 0xffffffffffffffff, 0x8, &(0x7f0000000180)={0x3, 0x5}, 0x8, 0x10, &(0x7f00000001c0)={0x4, 0xe, 0x6, 0x9}, 0x10, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, &(0x7f0000000200)=[0x1, 0x1]}, 0x80) (async) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='3\x00', 0x2) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='3\x00', 0x2) (async) 00:44:58 executing program 2: ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000000)={0x8, 0xffff, 0x6}) unshare(0xc000400) [ 3381.731510] nbd: must specify at least one socket [ 3381.749107] nbd: must specify at least one socket 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, 0x0, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 2: ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000000)={0x8, 0xffff, 0x6}) unshare(0xc000400) ioctl$KVM_S390_UCAS_UNMAP(0xffffffffffffffff, 0x4018ae51, &(0x7f0000000000)={0x8, 0xffff, 0x6}) (async) unshare(0xc000400) (async) 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="00800000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000140), 0x10001, 0x8000) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) socketpair(0xb, 0x5, 0xffff7fff, &(0x7f0000000500)) accept4(r4, &(0x7f0000000540)=@ll={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @multicast}, &(0x7f00000005c0)=0x80, 0x0) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000740)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000700)={&(0x7f0000000640)={0x70, r1, 0x200, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0x5b, 0x4, 0x6a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x124}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000000}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x70}, 0x1, 0x0, 0x0, 0x8861}, 0x4048011) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) r7 = socket(0xf, 0x2, 0x6) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000280)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='p\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="20002cbd7000fedbdf250300000008000a006e6264000c0004009a850000000000000c00050009000000000000003400078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0000f5ffffff0000"], 0x70}, 0x1, 0x0, 0x0, 0x4048080}, 0x800) r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r2) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000480)=0xffffffffffffffff, 0x4) sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000400)={&(0x7f0000000380)=ANY=[@ANYBLOB="6b56d25d", @ANYRES16=r9, @ANYBLOB="000025bd7000ffdbdf25020000000c00030000000100000000000c00020005000000000000000c00030004000000000000000c00078008000100", @ANYRES32=r7, @ANYBLOB], 0x44}, 0x1, 0x0, 0x0, 0x8080}, 0x4000041) syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r8) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) write$sysctl(0xffffffffffffffff, &(0x7f0000000000)='3\x00', 0x2) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000340), r0) r1 = bpf$MAP_CREATE(0x0, &(0x7f00000002c0)=@base={0x2, 0x1, 0x6, 0x5, 0x1002, 0x1, 0xfffffffe, '\x00', 0x0, 0xffffffffffffffff, 0x4, 0x0, 0x3}, 0x48) bpf$PROG_LOAD(0x5, &(0x7f0000000240)={0x5, 0xa, &(0x7f0000000040)=@framed={{0x18, 0x0, 0x0, 0x0, 0x401, 0x0, 0x0, 0x0, 0x95}, [@initr0={0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, @exit, @func={0x85, 0x0, 0x1, 0x0, 0x5}, @alu={0x7, 0x0, 0x8, 0xa, 0x4, 0x1}, @map_fd={0x18, 0x1, 0x1, 0x0, r1}]}, &(0x7f00000000c0)='GPL\x00', 0xfffffc00, 0x70, &(0x7f0000000100)=""/112, 0x41000, 0x0, '\x00', 0x0, 0x9, 0xffffffffffffffff, 0x8, &(0x7f0000000180)={0x3, 0x5}, 0x8, 0x10, &(0x7f00000001c0)={0x4, 0xe, 0x6, 0x9}, 0x10, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, &(0x7f0000000200)=[0x1, 0x1]}, 0x80) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, 0x0, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 2: exit_group(0x1f) unshare(0xc000400) 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 32) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="00800000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000140), 0x10001, 0x8000) (async, rerun: 64) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (rerun: 64) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) (async, rerun: 64) socketpair(0xb, 0x5, 0xffff7fff, &(0x7f0000000500)) (rerun: 64) accept4(r4, &(0x7f0000000540)=@ll={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @multicast}, &(0x7f00000005c0)=0x80, 0x0) (async) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) (async, rerun: 32) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000740)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000700)={&(0x7f0000000640)={0x70, r1, 0x200, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0x5b, 0x4, 0x6a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x124}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000000}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x70}, 0x1, 0x0, 0x0, 0x8861}, 0x4048011) (async, rerun: 32) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) (async) r7 = socket(0xf, 0x2, 0x6) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000280)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='p\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="20002cbd7000fedbdf250300000008000a006e6264000c0004009a850000000000000c00050009000000000000003400078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0000f5ffffff0000"], 0x70}, 0x1, 0x0, 0x0, 0x4048080}, 0x800) r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r2) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000480)=0xffffffffffffffff, 0x4) (async) sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000400)={&(0x7f0000000380)=ANY=[@ANYBLOB="6b56d25d", @ANYRES16=r9, @ANYBLOB="000025bd7000ffdbdf25020000000c00030000000100000000000c00020005000000000000000c00030004000000000000000c00078008000100", @ANYRES32=r7, @ANYBLOB], 0x44}, 0x1, 0x0, 0x0, 0x8080}, 0x4000041) (async) syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r8) 00:44:58 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000080)={&(0x7f0000000040)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0xc, 0xc, 0x6, [@func={0x5, 0x0, 0x0, 0xc, 0x5}]}, {0x0, [0x0, 0x30, 0x2e, 0x2e]}}, &(0x7f00000002c0)=""/220, 0x2a, 0xdc, 0x1}, 0x20) setsockopt$MRT6_TABLE(0xffffffffffffffff, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x4) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:58 executing program 2: exit_group(0x1f) unshare(0xc000400) exit_group(0x1f) (async) unshare(0xc000400) (async) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, 0x0, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x4) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000040)={'wg2\x00', {0x2, 0x4e23, @multicast2}}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) openat$cgroup_freezer_state(r3, &(0x7f0000000140), 0x2, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) r4 = eventfd2(0x3, 0x80c00) epoll_ctl$EPOLL_CTL_ADD(r2, 0x1, r4, &(0x7f0000000080)={0x10}) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r1, 0x8982, &(0x7f00000000c0)={0x6, 'ip6_vti0\x00', {0x1000}, 0x7fff}) 00:44:58 executing program 2: exit_group(0x1f) (async) unshare(0xc000400) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:58 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x4) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000040)={'wg2\x00', {0x2, 0x4e23, @multicast2}}) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) openat$cgroup_freezer_state(r3, &(0x7f0000000140), 0x2, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) r4 = eventfd2(0x3, 0x80c00) epoll_ctl$EPOLL_CTL_ADD(r2, 0x1, r4, &(0x7f0000000080)={0x10}) (async) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r1, 0x8982, &(0x7f00000000c0)={0x6, 'ip6_vti0\x00', {0x1000}, 0x7fff}) 00:44:58 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:58 executing program 2: waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x80000000, &(0x7f0000000000)) 00:44:58 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:58 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="00800000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000140), 0x10001, 0x8000) (async) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) (async, rerun: 32) socketpair(0xb, 0x5, 0xffff7fff, &(0x7f0000000500)) (async, rerun: 32) accept4(r4, &(0x7f0000000540)=@ll={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @multicast}, &(0x7f00000005c0)=0x80, 0x0) (async, rerun: 64) r5 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (rerun: 64) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r5, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000740)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000700)={&(0x7f0000000640)={0x70, r1, 0x200, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0x5b, 0x4, 0x6a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x124}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000000}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}]}, 0x70}, 0x1, 0x0, 0x0, 0x8861}, 0x4048011) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) (async) r7 = socket(0xf, 0x2, 0x6) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000280)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='p\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="20002cbd7000fedbdf250300000008000a006e6264000c0004009a850000000000000c00050009000000000000003400078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0000f5ffffff0000"], 0x70}, 0x1, 0x0, 0x0, 0x4048080}, 0x800) (async) r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r2) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000480)=0xffffffffffffffff, 0x4) (async) sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000400)={&(0x7f0000000380)=ANY=[@ANYBLOB="6b56d25d", @ANYRES16=r9, @ANYBLOB="000025bd7000ffdbdf25020000000c00030000000100000000000c00020005000000000000000c00030004000000000000000c00078008000100", @ANYRES32=r7, @ANYBLOB], 0x44}, 0x1, 0x0, 0x0, 0x8080}, 0x4000041) syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r8) 00:44:59 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000080)={&(0x7f0000000040)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0xc, 0xc, 0x6, [@func={0x5, 0x0, 0x0, 0xc, 0x5}]}, {0x0, [0x0, 0x30, 0x2e, 0x2e]}}, &(0x7f00000002c0)=""/220, 0x2a, 0xdc, 0x1}, 0x20) (async) setsockopt$MRT6_TABLE(0xffffffffffffffff, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x4) 00:44:59 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x4) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000040)={'wg2\x00', {0x2, 0x4e23, @multicast2}}) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) openat$cgroup_freezer_state(r3, &(0x7f0000000140), 0x2, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) r4 = eventfd2(0x3, 0x80c00) epoll_ctl$EPOLL_CTL_ADD(r2, 0x1, r4, &(0x7f0000000080)={0x10}) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r1, 0x8982, &(0x7f00000000c0)={0x6, 'ip6_vti0\x00', {0x1000}, 0x7fff}) socket$netlink(0x10, 0x3, 0x4) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$sock_inet_SIOCSIFBRDADDR(r1, 0x891a, &(0x7f0000000040)={'wg2\x00', {0x2, 0x4e23, @multicast2}}) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) openat$cgroup_freezer_state(r3, &(0x7f0000000140), 0x2, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) eventfd2(0x3, 0x80c00) (async) epoll_ctl$EPOLL_CTL_ADD(r2, 0x1, r4, &(0x7f0000000080)={0x10}) (async) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(r1, 0x8982, &(0x7f00000000c0)={0x6, 'ip6_vti0\x00', {0x1000}, 0x7fff}) (async) 00:44:59 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:59 executing program 2: waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x80000000, &(0x7f0000000000)) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x80000000, &(0x7f0000000000)) (async) 00:44:59 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:44:59 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000002000000"], 0x20}}, 0x0) 00:44:59 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:59 executing program 2: waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x80000000, &(0x7f0000000000)) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x80000000, &(0x7f0000000000)) (async) 00:44:59 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:44:59 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) [ 3382.946580] nbd: must specify at least one socket 00:44:59 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000002000000"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000002000000"], 0x20}}, 0x0) (async) 00:44:59 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) [ 3383.077899] nbd: must specify at least one socket [ 3383.096971] nbd: must specify at least one socket 00:45:00 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000080)={&(0x7f0000000040)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0xc, 0xc, 0x6, [@func={0x5, 0x0, 0x0, 0xc, 0x5}]}, {0x0, [0x0, 0x30, 0x2e, 0x2e]}}, &(0x7f00000002c0)=""/220, 0x2a, 0xdc, 0x1}, 0x20) setsockopt$MRT6_TABLE(0xffffffffffffffff, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x4) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280)={0x77359400}, 0x0) (async) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000080)={&(0x7f0000000040)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0xc, 0xc, 0x6, [@func={0x5, 0x0, 0x0, 0xc, 0x5}]}, {0x0, [0x0, 0x30, 0x2e, 0x2e]}}, &(0x7f00000002c0)=""/220, 0x2a, 0xdc, 0x1}, 0x20) (async) setsockopt$MRT6_TABLE(0xffffffffffffffff, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x4) (async) 00:45:00 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:00 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:00 executing program 2: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), 0xffffffffffffffff) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000340)={0xffffffffffffffff, 0xe0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, &(0x7f0000000080)=[0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x4, &(0x7f00000000c0)=[0x0, 0x0, 0x0], &(0x7f0000000100)=[0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f0000000140)=[{}, {}, {}, {}, {}, {}, {}], 0x38, 0x10, &(0x7f0000000180), &(0x7f00000001c0), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000200)}}, 0x10) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r0, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20802000}, 0xc, &(0x7f0000000480)={&(0x7f0000000500)=ANY=[@ANYBLOB="9c001000", @ANYRES16=r1, @ANYBLOB="000428bd7000fedbdf25060000003000018014000400fe8000000000000000000000000000bb060005004e210000050002007f00000008000700", @ANYRES32=r2, @ANYBLOB="08000200020000001c00018008000600040000000800060002000000050002001f0000002c000180060001000a00000008000600050000000800060007000000050002008000000005000200090000000800030004000000"], 0x9c}, 0x1, 0x0, 0x0, 0x4040000}, 0xc800) unshare(0xc000400) 00:45:00 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:00 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000002000000"], 0x20}}, 0x0) 00:45:00 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:00 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) ioctl$BTRFS_IOC_START_SYNC(0xffffffffffffffff, 0x80089418, &(0x7f0000000040)) syz_genetlink_get_family_id$mptcp(&(0x7f0000000080), r0) 00:45:00 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000140)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0x48, 0x48, 0x6, [@struct={0xe, 0x1, 0x0, 0x4, 0x1, 0x9, [{0x4, 0x4, 0x3f}]}, @array={0x0, 0x0, 0x0, 0x3, 0x0, {0x3, 0x4, 0x8000}}, @ptr={0x3, 0x0, 0x0, 0x2, 0x1}, @func={0x2, 0x0, 0x0, 0xc, 0x4}]}, {0x0, [0x0, 0x0, 0x2e, 0x5f]}}, &(0x7f00000001c0)=""/238, 0x66, 0xee}, 0x20) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) [ 3383.816007] nbd: must specify at least one socket 00:45:00 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) ioctl$BTRFS_IOC_START_SYNC(0xffffffffffffffff, 0x80089418, &(0x7f0000000040)) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000080), r0) 00:45:00 executing program 2: r0 = socket$nl_generic(0x10, 0x3, 0x10) (async) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), 0xffffffffffffffff) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000340)={0xffffffffffffffff, 0xe0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, &(0x7f0000000080)=[0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x4, &(0x7f00000000c0)=[0x0, 0x0, 0x0], &(0x7f0000000100)=[0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f0000000140)=[{}, {}, {}, {}, {}, {}, {}], 0x38, 0x10, &(0x7f0000000180), &(0x7f00000001c0), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000200)}}, 0x10) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r0, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20802000}, 0xc, &(0x7f0000000480)={&(0x7f0000000500)=ANY=[@ANYBLOB="9c001000", @ANYRES16=r1, @ANYBLOB="000428bd7000fedbdf25060000003000018014000400fe8000000000000000000000000000bb060005004e210000050002007f00000008000700", @ANYRES32=r2, @ANYBLOB="08000200020000001c00018008000600040000000800060002000000050002001f0000002c000180060001000a00000008000600050000000800060007000000050002008000000005000200090000000800030004000000"], 0x9c}, 0x1, 0x0, 0x0, 0x4040000}, 0xc800) (async) unshare(0xc000400) 00:45:00 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3383.922822] nbd: must specify at least one socket 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x3, 0x0, 0x0, 0x6, 0xfffffffffffffffd}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280)={0x0, 0x989680}, 0x0) clock_gettime(0x3, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000000)={0x9, 0x2, 0x6, 0x5, 0x3, 0x8, 0x7fff, 0x84}, &(0x7f0000000040)={0xffffffffffffffff, 0x9, 0x4, 0x5778c7e8, 0x6f, 0x2, 0x1, 0x40}, &(0x7f0000000080)={0x4, 0x7, 0x6, 0x5, 0x9, 0x1, 0x20, 0x3}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) shutdown(r0, 0x0) 00:45:01 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) (async) ioctl$BTRFS_IOC_START_SYNC(0xffffffffffffffff, 0x80089418, &(0x7f0000000040)) syz_genetlink_get_family_id$mptcp(&(0x7f0000000080), r0) 00:45:01 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000140)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0x48, 0x48, 0x6, [@struct={0xe, 0x1, 0x0, 0x4, 0x1, 0x9, [{0x4, 0x4, 0x3f}]}, @array={0x0, 0x0, 0x0, 0x3, 0x0, {0x3, 0x4, 0x8000}}, @ptr={0x3, 0x0, 0x0, 0x2, 0x1}, @func={0x2, 0x0, 0x0, 0xc, 0x4}]}, {0x0, [0x0, 0x0, 0x2e, 0x5f]}}, &(0x7f00000001c0)=""/238, 0x66, 0xee}, 0x20) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000140)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0x48, 0x48, 0x6, [@struct={0xe, 0x1, 0x0, 0x4, 0x1, 0x9, [{0x4, 0x4, 0x3f}]}, @array={0x0, 0x0, 0x0, 0x3, 0x0, {0x3, 0x4, 0x8000}}, @ptr={0x3, 0x0, 0x0, 0x2, 0x1}, @func={0x2, 0x0, 0x0, 0xc, 0x4}]}, {0x0, [0x0, 0x0, 0x2e, 0x5f]}}, &(0x7f00000001c0)=""/238, 0x66, 0xee}, 0x20) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) 00:45:01 executing program 2: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), 0xffffffffffffffff) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000340)={0xffffffffffffffff, 0xe0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, &(0x7f0000000080)=[0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x4, &(0x7f00000000c0)=[0x0, 0x0, 0x0], &(0x7f0000000100)=[0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f0000000140)=[{}, {}, {}, {}, {}, {}, {}], 0x38, 0x10, &(0x7f0000000180), &(0x7f00000001c0), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000200)}}, 0x10) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r0, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20802000}, 0xc, &(0x7f0000000480)={&(0x7f0000000500)=ANY=[@ANYBLOB="9c001000", @ANYRES16=r1, @ANYBLOB="000428bd7000fedbdf25060000003000018014000400fe8000000000000000000000000000bb060005004e210000050002007f00000008000700", @ANYRES32=r2, @ANYBLOB="08000200020000001c00018008000600040000000800060002000000050002001f0000002c000180060001000a00000008000600050000000800060007000000050002008000000005000200090000000800030004000000"], 0x9c}, 0x1, 0x0, 0x0, 0x4040000}, 0xc800) unshare(0xc000400) socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), 0xffffffffffffffff) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000340)={0xffffffffffffffff, 0xe0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, &(0x7f0000000080)=[0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x4, &(0x7f00000000c0)=[0x0, 0x0, 0x0], &(0x7f0000000100)=[0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f0000000140)=[{}, {}, {}, {}, {}, {}, {}], 0x38, 0x10, &(0x7f0000000180), &(0x7f00000001c0), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000200)}}, 0x10) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(r0, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20802000}, 0xc, &(0x7f0000000480)={&(0x7f0000000500)=ANY=[@ANYBLOB="9c001000", @ANYRES16=r1, @ANYBLOB="000428bd7000fedbdf25060000003000018014000400fe8000000000000000000000000000bb060005004e210000050002007f00000008000700", @ANYRES32=r2, @ANYBLOB="08000200020000001c00018008000600040000000800060002000000050002001f0000002c000180060001000a00000008000600050000000800060007000000050002008000000005000200090000000800030004000000"], 0x9c}, 0x1, 0x0, 0x0, 0x4040000}, 0xc800) (async) unshare(0xc000400) (async) 00:45:01 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:01 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x3, 0x0, 0x0, 0x6, 0xfffffffffffffffd}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280)={0x0, 0x989680}, 0x0) clock_gettime(0x3, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000000)={0x9, 0x2, 0x6, 0x5, 0x3, 0x8, 0x7fff, 0x84}, &(0x7f0000000040)={0xffffffffffffffff, 0x9, 0x4, 0x5778c7e8, 0x6f, 0x2, 0x1, 0x40}, &(0x7f0000000080)={0x4, 0x7, 0x6, 0x5, 0x9, 0x1, 0x20, 0x3}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) shutdown(r0, 0x0) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x14a01) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) ioctl$KVM_GET_ONE_REG(r2, 0x4010aeab, &(0x7f00000001c0)={0xfff, 0x7}) setsockopt$MRT6_DEL_MFC_PROXY(r1, 0x29, 0xd3, &(0x7f0000000140)={{0xa, 0x4e24, 0x400, @dev={0xfe, 0x80, '\x00', 0x28}, 0xe02}, {0xa, 0x4e24, 0x8000, @remote, 0x88}, 0xffffffffffffffff, {[0x0, 0x7f, 0x7fff, 0xb9, 0xfffffff7, 0x2, 0x8, 0x4]}}, 0x5c) ioctl$UFFDIO_CONTINUE(r1, 0xc020aa07, &(0x7f0000000100)={{&(0x7f0000ffd000/0x1000)=nil, 0x1000}}) r3 = socket$packet(0x11, 0x3, 0x300) accept4(r3, &(0x7f0000000040)=@l2tp6={0xa, 0x0, 0x0, @private2}, &(0x7f00000000c0)=0x80, 0x80000) [ 3384.689700] nbd: must specify at least one socket [ 3384.699173] nbd: must specify at least one socket 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x3, 0x0, 0x0, 0x6, 0xfffffffffffffffd}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0xfffffffffffffffc}, &(0x7f0000000280)={0x0, 0x989680}, 0x0) (async) clock_gettime(0x3, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000000)={0x9, 0x2, 0x6, 0x5, 0x3, 0x8, 0x7fff, 0x84}, &(0x7f0000000040)={0xffffffffffffffff, 0x9, 0x4, 0x5778c7e8, 0x6f, 0x2, 0x1, 0x40}, &(0x7f0000000080)={0x4, 0x7, 0x6, 0x5, 0x9, 0x1, 0x20, 0x3}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) (async) shutdown(r0, 0x0) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x14a01) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) ioctl$KVM_GET_ONE_REG(r2, 0x4010aeab, &(0x7f00000001c0)={0xfff, 0x7}) setsockopt$MRT6_DEL_MFC_PROXY(r1, 0x29, 0xd3, &(0x7f0000000140)={{0xa, 0x4e24, 0x400, @dev={0xfe, 0x80, '\x00', 0x28}, 0xe02}, {0xa, 0x4e24, 0x8000, @remote, 0x88}, 0xffffffffffffffff, {[0x0, 0x7f, 0x7fff, 0xb9, 0xfffffff7, 0x2, 0x8, 0x4]}}, 0x5c) ioctl$UFFDIO_CONTINUE(r1, 0xc020aa07, &(0x7f0000000100)={{&(0x7f0000ffd000/0x1000)=nil, 0x1000}}) r3 = socket$packet(0x11, 0x3, 0x300) accept4(r3, &(0x7f0000000040)=@l2tp6={0xa, 0x0, 0x0, @private2}, &(0x7f00000000c0)=0x80, 0x80000) socket$netlink(0x10, 0x3, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x14a01) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) ioctl$KVM_GET_ONE_REG(r2, 0x4010aeab, &(0x7f00000001c0)={0xfff, 0x7}) (async) setsockopt$MRT6_DEL_MFC_PROXY(r1, 0x29, 0xd3, &(0x7f0000000140)={{0xa, 0x4e24, 0x400, @dev={0xfe, 0x80, '\x00', 0x28}, 0xe02}, {0xa, 0x4e24, 0x8000, @remote, 0x88}, 0xffffffffffffffff, {[0x0, 0x7f, 0x7fff, 0xb9, 0xfffffff7, 0x2, 0x8, 0x4]}}, 0x5c) (async) ioctl$UFFDIO_CONTINUE(r1, 0xc020aa07, &(0x7f0000000100)={{&(0x7f0000ffd000/0x1000)=nil, 0x1000}}) (async) socket$packet(0x11, 0x3, 0x300) (async) accept4(r3, &(0x7f0000000040)=@l2tp6={0xa, 0x0, 0x0, @private2}, &(0x7f00000000c0)=0x80, 0x80000) (async) 00:45:01 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000140)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0x48, 0x48, 0x6, [@struct={0xe, 0x1, 0x0, 0x4, 0x1, 0x9, [{0x4, 0x4, 0x3f}]}, @array={0x0, 0x0, 0x0, 0x3, 0x0, {0x3, 0x4, 0x8000}}, @ptr={0x3, 0x0, 0x0, 0x2, 0x1}, @func={0x2, 0x0, 0x0, 0xc, 0x4}]}, {0x0, [0x0, 0x0, 0x2e, 0x5f]}}, &(0x7f00000001c0)=""/238, 0x66, 0xee}, 0x20) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:01 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:01 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$LOOP_GET_STATUS64(0xffffffffffffffff, 0x4c05, &(0x7f00000002c0)) r1 = syz_open_dev$vcsn(&(0x7f00000001c0), 0x0, 0x101000) ioctl$LOOP_CLR_FD(r1, 0x4c01) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xfffffffffffffffe, 0xe5ed}, 0x0, &(0x7f0000000240)={0x23, 0x0, 0x0, 0x10000000000000, 0x0, 0x0, 0x0, 0x712}, &(0x7f0000000280), 0x0) r2 = getpgrp(0x0) r3 = epoll_create1(0x80000) epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r0, &(0x7f0000000200)={0x10002000}) kcmp$KCMP_EPOLL_TFD(0x0, r2, 0x7, 0xffffffffffffffff, 0x0) r4 = getpgid(r2) r5 = getpgid(r4) sched_rr_get_interval(r5, &(0x7f00000003c0)) pselect6(0x40, &(0x7f0000000000)={0x5, 0x3, 0xe409, 0x1ff, 0x3, 0xa2, 0x5}, &(0x7f0000000040)={0x3, 0x6, 0x8, 0x3, 0xfffffffffffffff8, 0x9, 0x9, 0x9}, &(0x7f0000000080)={0x1, 0x5, 0x3f, 0x9, 0x8, 0x3, 0x8, 0x7}, &(0x7f00000000c0)={0x0, 0x3938700}, &(0x7f0000000180)={&(0x7f0000000100)={[0xffffffffffffffcc]}, 0x8}) 00:45:01 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:01 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x20, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '*('}]}, 0x1c}, 0x1, 0x0, 0x0, 0x82}, 0x40804) 00:45:01 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x70bd2c, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x28, r1, 0x501, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x8c0}, 0x8008) 00:45:01 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$LOOP_GET_STATUS64(0xffffffffffffffff, 0x4c05, &(0x7f00000002c0)) r1 = syz_open_dev$vcsn(&(0x7f00000001c0), 0x0, 0x101000) ioctl$LOOP_CLR_FD(r1, 0x4c01) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xfffffffffffffffe, 0xe5ed}, 0x0, &(0x7f0000000240)={0x23, 0x0, 0x0, 0x10000000000000, 0x0, 0x0, 0x0, 0x712}, &(0x7f0000000280), 0x0) r2 = getpgrp(0x0) r3 = epoll_create1(0x80000) epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r0, &(0x7f0000000200)={0x10002000}) kcmp$KCMP_EPOLL_TFD(0x0, r2, 0x7, 0xffffffffffffffff, 0x0) r4 = getpgid(r2) r5 = getpgid(r4) sched_rr_get_interval(r5, &(0x7f00000003c0)) pselect6(0x40, &(0x7f0000000000)={0x5, 0x3, 0xe409, 0x1ff, 0x3, 0xa2, 0x5}, &(0x7f0000000040)={0x3, 0x6, 0x8, 0x3, 0xfffffffffffffff8, 0x9, 0x9, 0x9}, &(0x7f0000000080)={0x1, 0x5, 0x3f, 0x9, 0x8, 0x3, 0x8, 0x7}, &(0x7f00000000c0)={0x0, 0x3938700}, &(0x7f0000000180)={&(0x7f0000000100)={[0xffffffffffffffcc]}, 0x8}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) ioctl$LOOP_GET_STATUS64(0xffffffffffffffff, 0x4c05, &(0x7f00000002c0)) (async) syz_open_dev$vcsn(&(0x7f00000001c0), 0x0, 0x101000) (async) ioctl$LOOP_CLR_FD(r1, 0x4c01) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xfffffffffffffffe, 0xe5ed}, 0x0, &(0x7f0000000240)={0x23, 0x0, 0x0, 0x10000000000000, 0x0, 0x0, 0x0, 0x712}, &(0x7f0000000280), 0x0) (async) getpgrp(0x0) (async) epoll_create1(0x80000) (async) epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r0, &(0x7f0000000200)={0x10002000}) (async) kcmp$KCMP_EPOLL_TFD(0x0, r2, 0x7, 0xffffffffffffffff, 0x0) (async) getpgid(r2) (async) getpgid(r4) (async) sched_rr_get_interval(r5, &(0x7f00000003c0)) (async) pselect6(0x40, &(0x7f0000000000)={0x5, 0x3, 0xe409, 0x1ff, 0x3, 0xa2, 0x5}, &(0x7f0000000040)={0x3, 0x6, 0x8, 0x3, 0xfffffffffffffff8, 0x9, 0x9, 0x9}, &(0x7f0000000080)={0x1, 0x5, 0x3f, 0x9, 0x8, 0x3, 0x8, 0x7}, &(0x7f00000000c0)={0x0, 0x3938700}, &(0x7f0000000180)={&(0x7f0000000100)={[0xffffffffffffffcc]}, 0x8}) (async) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x14a01) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) ioctl$KVM_GET_ONE_REG(r2, 0x4010aeab, &(0x7f00000001c0)={0xfff, 0x7}) (async) setsockopt$MRT6_DEL_MFC_PROXY(r1, 0x29, 0xd3, &(0x7f0000000140)={{0xa, 0x4e24, 0x400, @dev={0xfe, 0x80, '\x00', 0x28}, 0xe02}, {0xa, 0x4e24, 0x8000, @remote, 0x88}, 0xffffffffffffffff, {[0x0, 0x7f, 0x7fff, 0xb9, 0xfffffff7, 0x2, 0x8, 0x4]}}, 0x5c) (async) ioctl$UFFDIO_CONTINUE(r1, 0xc020aa07, &(0x7f0000000100)={{&(0x7f0000ffd000/0x1000)=nil, 0x1000}}) (async, rerun: 32) r3 = socket$packet(0x11, 0x3, 0x300) (rerun: 32) accept4(r3, &(0x7f0000000040)=@l2tp6={0xa, 0x0, 0x0, @private2}, &(0x7f00000000c0)=0x80, 0x80000) 00:45:01 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x20, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '*('}]}, 0x1c}, 0x1, 0x0, 0x0, 0x82}, 0x40804) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x20, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '*('}]}, 0x1c}, 0x1, 0x0, 0x0, 0x82}, 0x40804) (async) [ 3385.020163] block nbd2: not configured, cannot reconfigure 00:45:01 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$LOOP_GET_STATUS64(0xffffffffffffffff, 0x4c05, &(0x7f00000002c0)) r1 = syz_open_dev$vcsn(&(0x7f00000001c0), 0x0, 0x101000) ioctl$LOOP_CLR_FD(r1, 0x4c01) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xfffffffffffffffe, 0xe5ed}, 0x0, &(0x7f0000000240)={0x23, 0x0, 0x0, 0x10000000000000, 0x0, 0x0, 0x0, 0x712}, &(0x7f0000000280), 0x0) r2 = getpgrp(0x0) r3 = epoll_create1(0x80000) epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r0, &(0x7f0000000200)={0x10002000}) kcmp$KCMP_EPOLL_TFD(0x0, r2, 0x7, 0xffffffffffffffff, 0x0) r4 = getpgid(r2) r5 = getpgid(r4) sched_rr_get_interval(r5, &(0x7f00000003c0)) pselect6(0x40, &(0x7f0000000000)={0x5, 0x3, 0xe409, 0x1ff, 0x3, 0xa2, 0x5}, &(0x7f0000000040)={0x3, 0x6, 0x8, 0x3, 0xfffffffffffffff8, 0x9, 0x9, 0x9}, &(0x7f0000000080)={0x1, 0x5, 0x3f, 0x9, 0x8, 0x3, 0x8, 0x7}, &(0x7f00000000c0)={0x0, 0x3938700}, &(0x7f0000000180)={&(0x7f0000000100)={[0xffffffffffffffcc]}, 0x8}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) ioctl$LOOP_GET_STATUS64(0xffffffffffffffff, 0x4c05, &(0x7f00000002c0)) (async) syz_open_dev$vcsn(&(0x7f00000001c0), 0x0, 0x101000) (async) ioctl$LOOP_CLR_FD(r1, 0x4c01) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xfffffffffffffffe, 0xe5ed}, 0x0, &(0x7f0000000240)={0x23, 0x0, 0x0, 0x10000000000000, 0x0, 0x0, 0x0, 0x712}, &(0x7f0000000280), 0x0) (async) getpgrp(0x0) (async) epoll_create1(0x80000) (async) epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r0, &(0x7f0000000200)={0x10002000}) (async) kcmp$KCMP_EPOLL_TFD(0x0, r2, 0x7, 0xffffffffffffffff, 0x0) (async) getpgid(r2) (async) getpgid(r4) (async) sched_rr_get_interval(r5, &(0x7f00000003c0)) (async) pselect6(0x40, &(0x7f0000000000)={0x5, 0x3, 0xe409, 0x1ff, 0x3, 0xa2, 0x5}, &(0x7f0000000040)={0x3, 0x6, 0x8, 0x3, 0xfffffffffffffff8, 0x9, 0x9, 0x9}, &(0x7f0000000080)={0x1, 0x5, 0x3f, 0x9, 0x8, 0x3, 0x8, 0x7}, &(0x7f00000000c0)={0x0, 0x3938700}, &(0x7f0000000180)={&(0x7f0000000100)={[0xffffffffffffffcc]}, 0x8}) (async) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:01 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:01 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3385.124945] nbd: must specify at least one socket [ 3385.131099] block nbd2: not configured, cannot reconfigure [ 3385.142705] nbd: must specify at least one socket 00:45:01 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x70bd2c, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x28, r1, 0x501, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x8c0}, 0x8008) 00:45:01 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x20, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '*('}]}, 0x1c}, 0x1, 0x0, 0x0, 0x82}, 0x40804) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x20, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '*('}]}, 0x1c}, 0x1, 0x0, 0x0, 0x82}, 0x40804) (async) 00:45:01 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) [ 3385.185516] block nbd2: not configured, cannot reconfigure 00:45:01 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) openat$ashmem(0xffffffffffffff9c, &(0x7f0000000000), 0xa000, 0x0) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x40}, &(0x7f0000000280), 0x0) 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0x8) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) ioctl$KVM_SET_CPUID2(r1, 0x4008ae90, &(0x7f0000000040)={0x2, 0x0, [{0x80000008, 0x10000, 0x0, 0x10000, 0x80000001, 0x4, 0x80000000}, {0x40000001, 0x5, 0x1, 0x9, 0x5, 0x1, 0x8}]}) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) [ 3385.280463] nla_parse: 27 callbacks suppressed [ 3385.280474] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3385.308393] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) (async) openat$ashmem(0xffffffffffffff9c, &(0x7f0000000000), 0xa000, 0x0) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x40}, &(0x7f0000000280), 0x0) 00:45:02 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x70bd2c, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x28, r1, 0x501, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x8c0}, 0x8008) 00:45:02 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:02 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) setsockopt$MRT6_ASSERT(r1, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x0) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000040), r0) (async) openat$ashmem(0xffffffffffffff9c, &(0x7f0000000000), 0xa000, 0x0) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x40}, &(0x7f0000000280), 0x0) 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) (async) r1 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) ioctl$KVM_SET_CPUID2(r1, 0x4008ae90, &(0x7f0000000040)={0x2, 0x0, [{0x80000008, 0x10000, 0x0, 0x10000, 0x80000001, 0x4, 0x80000000}, {0x40000001, 0x5, 0x1, 0x9, 0x5, 0x1, 0x8}]}) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:02 executing program 2: unshare(0xc000400) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) setsockopt$MRT6_ASSERT(r1, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x0) 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3385.490881] nbd: must specify at least one socket 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) ioctl$NBD_SET_BLKSIZE(0xffffffffffffffff, 0xab01, 0x7) 00:45:02 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async, rerun: 32) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (rerun: 32) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async, rerun: 32) setsockopt$MRT6_ASSERT(r1, 0x29, 0xcf, &(0x7f0000000000)=0x1, 0x0) (rerun: 32) [ 3385.535575] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3385.566866] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:02 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3385.587976] nbd: must specify at least one socket 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) r1 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) ioctl$KVM_SET_CPUID2(r1, 0x4008ae90, &(0x7f0000000040)={0x2, 0x0, [{0x80000008, 0x10000, 0x0, 0x10000, 0x80000001, 0x4, 0x80000000}, {0x40000001, 0x5, 0x1, 0x9, 0x5, 0x1, 0x8}]}) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) ioctl$NBD_SET_BLKSIZE(0xffffffffffffffff, 0xab01, 0x7) socket$phonet_pipe(0x23, 0x5, 0x2) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) ioctl$NBD_SET_BLKSIZE(0xffffffffffffffff, 0xab01, 0x7) (async) 00:45:02 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000400)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x2c, r1, 0x100, 0x70bd26, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4020001}, 0x4) sendmsg$NBD_CMD_RECONFIGURE(r5, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r4, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xef}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x10000}]}, 0x44}, 0x1, 0x0, 0x0, 0x40000}, 0x20004880) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000001f000000000000000f94e96601000000c7ff060000000000000000002b8805f2fb458339f54a"], 0x20}}, 0x0) 00:45:02 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000040), 0x68d4, 0x240942) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) unshare(0xc000400) [ 3385.693140] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000040), 0x68d4, 0x240942) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) unshare(0xc000400) syz_open_dev$vcsn(&(0x7f0000000040), 0x68d4, 0x240942) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) unshare(0xc000400) (async) 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_FD(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000080)={r1}) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) accept4$phonet_pipe(r0, &(0x7f0000000000), &(0x7f0000000040)=0x10, 0x80800) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) ioctl$NBD_SET_BLKSIZE(0xffffffffffffffff, 0xab01, 0x7) [ 3385.736029] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:02 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000040), 0x68d4, 0x240942) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) unshare(0xc000400) [ 3385.805992] nbd: couldn't find a device at index 3 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_FD(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000080)={r1}) 00:45:02 executing program 2: unshare(0x40000) unshare(0x62000900) ioctl$ASHMEM_SET_SIZE(0xffffffffffffffff, 0x40087703, 0x3f) [ 3385.858862] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3385.887449] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0xff}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) pselect6(0x40, &(0x7f0000000000)={0x80000001, 0x1, 0x943f, 0x1000, 0x400, 0x7, 0x4, 0xffff}, &(0x7f0000000040)={0x5, 0x8, 0xffff, 0x8000, 0x8c, 0x8, 0xffffffff, 0x277}, &(0x7f0000000080)={0x345c, 0x2, 0x7, 0x0, 0x3, 0x7, 0xbea8, 0xf6}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) 00:45:02 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000400)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x2c, r1, 0x100, 0x70bd26, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4020001}, 0x4) sendmsg$NBD_CMD_RECONFIGURE(r5, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r4, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xef}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x10000}]}, 0x44}, 0x1, 0x0, 0x0, 0x40000}, 0x20004880) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000001f000000000000000f94e96601000000c7ff060000000000000000002b8805f2fb458339f54a"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000400)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x2c, r1, 0x100, 0x70bd26, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4020001}, 0x4) (async) sendmsg$NBD_CMD_RECONFIGURE(r5, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r4, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xef}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x10000}]}, 0x44}, 0x1, 0x0, 0x0, 0x40000}, 0x20004880) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000001f000000000000000f94e96601000000c7ff060000000000000000002b8805f2fb458339f54a"], 0x20}}, 0x0) (async) 00:45:02 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:02 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD_FD(0xffffffffffffffff, 0xc01064c1, &(0x7f0000000080)={r1}) 00:45:02 executing program 2: unshare(0x40000) unshare(0x62000900) (async) ioctl$ASHMEM_SET_SIZE(0xffffffffffffffff, 0x40087703, 0x3f) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0xff}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) pselect6(0x40, &(0x7f0000000000)={0x80000001, 0x1, 0x943f, 0x1000, 0x400, 0x7, 0x4, 0xffff}, &(0x7f0000000040)={0x5, 0x8, 0xffff, 0x8000, 0x8c, 0x8, 0xffffffff, 0x277}, &(0x7f0000000080)={0x345c, 0x2, 0x7, 0x0, 0x3, 0x7, 0xbea8, 0xf6}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) 00:45:02 executing program 2: unshare(0x40000) unshare(0x62000900) ioctl$ASHMEM_SET_SIZE(0xffffffffffffffff, 0x40087703, 0x3f) unshare(0x40000) (async) unshare(0x62000900) (async) ioctl$ASHMEM_SET_SIZE(0xffffffffffffffff, 0x40087703, 0x3f) (async) [ 3386.062422] nbd: couldn't find a device at index 3 00:45:02 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r6, &(0x7f0000000400)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x2c, r1, 0x100, 0x70bd26, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4020001}, 0x4) (async) sendmsg$NBD_CMD_RECONFIGURE(r5, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r4, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xef}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x10000}]}, 0x44}, 0x1, 0x0, 0x0, 0x40000}, 0x20004880) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff40000001f000000000000000f94e96601000000c7ff060000000000000000002b8805f2fb458339f54a"], 0x20}}, 0x0) 00:45:02 executing program 1: ioctl$UFFDIO_CONTINUE(0xffffffffffffffff, 0xc020aa07, &(0x7f0000000040)={{&(0x7f0000ffb000/0x2000)=nil, 0x2000}, 0x1}) r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x0, 0xff}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) pselect6(0x40, &(0x7f0000000000)={0x80000001, 0x1, 0x943f, 0x1000, 0x400, 0x7, 0x4, 0xffff}, &(0x7f0000000040)={0x5, 0x8, 0xffff, 0x8000, 0x8c, 0x8, 0xffffffff, 0x277}, &(0x7f0000000080)={0x345c, 0x2, 0x7, 0x0, 0x3, 0x7, 0xbea8, 0xf6}, &(0x7f00000000c0), &(0x7f0000000180)={&(0x7f0000000100)={[0x3]}, 0x8}) [ 3386.121264] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3386.136001] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:02 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:02 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:02 executing program 2: userfaultfd(0x80000) unshare(0xc000400) 00:45:02 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, 0x0, 0x8, 0x70bd2d, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x40, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x81}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @multicast2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x5}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}]}, 0x74}}, 0x80) 00:45:02 executing program 1: ioctl$UFFDIO_CONTINUE(0xffffffffffffffff, 0xc020aa07, &(0x7f0000000040)={{&(0x7f0000ffb000/0x2000)=nil, 0x2000}, 0x1}) r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) ioctl$UFFDIO_CONTINUE(0xffffffffffffffff, 0xc020aa07, &(0x7f0000000040)={{&(0x7f0000ffb000/0x2000)=nil, 0x2000}, 0x1}) (async) socket$netlink(0x10, 0x3, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) [ 3386.237213] nbd: couldn't find a device at index 3 00:45:02 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x0) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 2: userfaultfd(0x80000) unshare(0xc000400) userfaultfd(0x80000) (async) unshare(0xc000400) (async) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, 0x0, 0x8, 0x70bd2d, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x40, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x81}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @multicast2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x5}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}]}, 0x74}}, 0x80) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, 0x0, 0x8, 0x70bd2d, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x40, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x81}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @multicast2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x5}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}]}, 0x74}}, 0x80) (async) [ 3386.366531] nbd: must specify at least one socket 00:45:03 executing program 1: ioctl$UFFDIO_CONTINUE(0xffffffffffffffff, 0xc020aa07, &(0x7f0000000040)={{&(0x7f0000ffb000/0x2000)=nil, 0x2000}, 0x1}) r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) ioctl$UFFDIO_CONTINUE(0xffffffffffffffff, 0xc020aa07, &(0x7f0000000040)={{&(0x7f0000ffb000/0x2000)=nil, 0x2000}, 0x1}) (async) socket$netlink(0x10, 0x3, 0xc) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 2: userfaultfd(0x80000) (async) unshare(0xc000400) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x0) (async) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, 0x0, 0x8, 0x70bd2d, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x40, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x81}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @multicast2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x5}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x6}]}, 0x74}}, 0x80) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3386.494290] nbd: must specify at least one socket 00:45:03 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = epoll_create1(0xea16730bec15d697) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$KVM_S390_UCAS_UNMAP(r3, 0x4018ae51, &(0x7f0000000080)={0x12, 0x80, 0x3}) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_MOD(r1, 0x3, r2, &(0x7f00000000c0)={0x80000000}) ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000400)=0x7fffffffffffffff) getsockopt$inet6_mreq(r3, 0x29, 0x1b, &(0x7f00000001c0)={@loopback, 0x0}, &(0x7f0000000200)=0x14) r5 = bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000240), 0x4) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) r7 = syz_open_dev$vcsn(&(0x7f0000000300), 0x2, 0x6200) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x200480) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) r9 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r9, 0x0, 0x0}, 0x10) bpf$PROG_LOAD(0x5, &(0x7f0000000380)={0x11, 0x5, &(0x7f0000000440)=ANY=[@ANYBLOB="850000003c0000001852000007000000f700009e6055000000000000186200000d00000000000000000000d93a419ce86d8e54b2fc5865d660015bc6b4a9607d8755d045dc6062dd990c4c99a3d606db23c1f4fc9fb66ffe002773c3900cacd7ef68a72e6ebdc48c6fa693c498c6cbde598f78848be60f82ee1051db7b36322a17153500230e93683f8829aa96757e60b66b47cf66ca24db54fe9f9737efb18faa76a581f0fd00dc"], &(0x7f0000000140)='GPL\x00', 0xfffffffe, 0x23, &(0x7f0000000180)=""/35, 0x41100, 0x5, '\x00', r4, 0xa, r5, 0x8, &(0x7f0000000280)={0x80000000, 0x3}, 0x8, 0x10, &(0x7f00000002c0)={0x3, 0xe, 0x0, 0x40}, 0x10, 0x0, r6, 0x0, &(0x7f0000000340)=[r3, r7, r8, r3, r9]}, 0x80) 00:45:03 executing program 2: unshare(0x8040400) unshare(0x400) [ 3386.527109] nbd: must specify at least one socket 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x0) 00:45:03 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) getpeername$packet(0xffffffffffffffff, &(0x7f0000000040)={0x11, 0x0, 0x0}, &(0x7f0000000080)=0x14) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000240)={0x8000000000000000, 0x4, 0xffffffffffff15b5, 0x5, 0x7}) sendmsg$MPTCP_PM_CMD_FLUSH_ADDRS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="fc000025", @ANYRES16=0x0, @ANYBLOB="00002cbd7000fedbdf250400000030000180080003007f000001140004000000000000000000000000000000000108000700", @ANYRES32=0x0, @ANYBLOB="060005004e2200002c0001800800060005000000060001000a000000060005004e23000008000700", @ANYRES32=r1, @ANYBLOB="060005004e2200003400018008000300ac1414260500020000000000050002000800000006000100020000000800060003000000080003000000000008000300030000000800020004000000080003000700000008000200020000002800018008000300ac1e010108000300ac1414bb14000400fc00000000000000000000000000000008000200040000000800020001000000"], 0xfc}, 0x1, 0x0, 0x0, 0x1}, 0x4080) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) r1 = epoll_create1(0xea16730bec15d697) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async, rerun: 64) ioctl$KVM_S390_UCAS_UNMAP(r3, 0x4018ae51, &(0x7f0000000080)={0x12, 0x80, 0x3}) (async, rerun: 64) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) epoll_ctl$EPOLL_CTL_MOD(r1, 0x3, r2, &(0x7f00000000c0)={0x80000000}) ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000400)=0x7fffffffffffffff) (async, rerun: 32) getsockopt$inet6_mreq(r3, 0x29, 0x1b, &(0x7f00000001c0)={@loopback, 0x0}, &(0x7f0000000200)=0x14) (async, rerun: 32) r5 = bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000240), 0x4) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) (async, rerun: 32) r7 = syz_open_dev$vcsn(&(0x7f0000000300), 0x2, 0x6200) (async, rerun: 32) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x200480) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) (async) r9 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r9, 0x0, 0x0}, 0x10) bpf$PROG_LOAD(0x5, &(0x7f0000000380)={0x11, 0x5, &(0x7f0000000440)=ANY=[@ANYBLOB="850000003c0000001852000007000000f700009e6055000000000000186200000d00000000000000000000d93a419ce86d8e54b2fc5865d660015bc6b4a9607d8755d045dc6062dd990c4c99a3d606db23c1f4fc9fb66ffe002773c3900cacd7ef68a72e6ebdc48c6fa693c498c6cbde598f78848be60f82ee1051db7b36322a17153500230e93683f8829aa96757e60b66b47cf66ca24db54fe9f9737efb18faa76a581f0fd00dc"], &(0x7f0000000140)='GPL\x00', 0xfffffffe, 0x23, &(0x7f0000000180)=""/35, 0x41100, 0x5, '\x00', r4, 0xa, r5, 0x8, &(0x7f0000000280)={0x80000000, 0x3}, 0x8, 0x10, &(0x7f00000002c0)={0x3, 0xe, 0x0, 0x40}, 0x10, 0x0, r6, 0x0, &(0x7f0000000340)=[r3, r7, r8, r3, r9]}, 0x80) 00:45:03 executing program 2: unshare(0x8040400) (async) unshare(0x400) 00:45:03 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) getpeername$packet(0xffffffffffffffff, &(0x7f0000000040)={0x11, 0x0, 0x0}, &(0x7f0000000080)=0x14) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000240)={0x8000000000000000, 0x4, 0xffffffffffff15b5, 0x5, 0x7}) sendmsg$MPTCP_PM_CMD_FLUSH_ADDRS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="fc000025", @ANYRES16=0x0, @ANYBLOB="00002cbd7000fedbdf250400000030000180080003007f000001140004000000000000000000000000000000000108000700", @ANYRES32=0x0, @ANYBLOB="060005004e2200002c0001800800060005000000060001000a000000060005004e23000008000700", @ANYRES32=r1, @ANYBLOB="060005004e2200003400018008000300ac1414260500020000000000050002000800000006000100020000000800060003000000080003000000000008000300030000000800020004000000080003000700000008000200020000002800018008000300ac1e010108000300ac1414bb14000400fc00000000000000000000000000000008000200040000000800020001000000"], 0xfc}, 0x1, 0x0, 0x0, 0x1}, 0x4080) [ 3386.652982] nbd: must specify at least one socket 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000001c0)={&(0x7f0000000140)={0x7c, r1, 0x2, 0x70bd28, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x401}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40010}, 0x4081) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="04000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 2: unshare(0x8040400) unshare(0x400) 00:45:03 executing program 1: r0 = socket$netlink(0x10, 0x3, 0xc) syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), r0) (async) r1 = epoll_create1(0xea16730bec15d697) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) ioctl$KVM_S390_UCAS_UNMAP(r3, 0x4018ae51, &(0x7f0000000080)={0x12, 0x80, 0x3}) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) epoll_ctl$EPOLL_CTL_MOD(r1, 0x3, r2, &(0x7f00000000c0)={0x80000000}) ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000400)=0x7fffffffffffffff) (async) getsockopt$inet6_mreq(r3, 0x29, 0x1b, &(0x7f00000001c0)={@loopback, 0x0}, &(0x7f0000000200)=0x14) (async) r5 = bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000240), 0x4) r6 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r6, 0x0, 0x0}, 0x10) (async) r7 = syz_open_dev$vcsn(&(0x7f0000000300), 0x2, 0x6200) (async) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x200480) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) r9 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r9, 0x0, 0x0}, 0x10) (async) bpf$PROG_LOAD(0x5, &(0x7f0000000380)={0x11, 0x5, &(0x7f0000000440)=ANY=[@ANYBLOB="850000003c0000001852000007000000f700009e6055000000000000186200000d00000000000000000000d93a419ce86d8e54b2fc5865d660015bc6b4a9607d8755d045dc6062dd990c4c99a3d606db23c1f4fc9fb66ffe002773c3900cacd7ef68a72e6ebdc48c6fa693c498c6cbde598f78848be60f82ee1051db7b36322a17153500230e93683f8829aa96757e60b66b47cf66ca24db54fe9f9737efb18faa76a581f0fd00dc"], &(0x7f0000000140)='GPL\x00', 0xfffffffe, 0x23, &(0x7f0000000180)=""/35, 0x41100, 0x5, '\x00', r4, 0xa, r5, 0x8, &(0x7f0000000280)={0x80000000, 0x3}, 0x8, 0x10, &(0x7f00000002c0)={0x3, 0xe, 0x0, 0x40}, 0x10, 0x0, r6, 0x0, &(0x7f0000000340)=[r3, r7, r8, r3, r9]}, 0x80) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000001c0)={&(0x7f0000000140)={0x7c, r1, 0x2, 0x70bd28, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x401}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40010}, 0x4081) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="04000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000001c0)={&(0x7f0000000140)={0x7c, r1, 0x2, 0x70bd28, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x401}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40010}, 0x4081) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="04000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) (async) 00:45:03 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000001c0)) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) getpeername$packet(0xffffffffffffffff, &(0x7f0000000040)={0x11, 0x0, 0x0}, &(0x7f0000000080)=0x14) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000240)={0x8000000000000000, 0x4, 0xffffffffffff15b5, 0x5, 0x7}) sendmsg$MPTCP_PM_CMD_FLUSH_ADDRS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="fc000025", @ANYRES16=0x0, @ANYBLOB="00002cbd7000fedbdf250400000030000180080003007f000001140004000000000000000000000000000000000108000700", @ANYRES32=0x0, @ANYBLOB="060005004e2200002c0001800800060005000000060001000a000000060005004e23000008000700", @ANYRES32=r1, @ANYBLOB="060005004e2200003400018008000300ac1414260500020000000000050002000800000006000100020000000800060003000000080003000000000008000300030000000800020004000000080003000700000008000200020000002800018008000300ac1e010108000300ac1414bb14000400fc00000000000000000000000000000008000200040000000800020001000000"], 0xfc}, 0x1, 0x0, 0x0, 0x1}, 0x4080) socket$phonet_pipe(0x23, 0x5, 0x2) (async) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)) (async) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000001c0)) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) getpeername$packet(0xffffffffffffffff, &(0x7f0000000040), &(0x7f0000000080)=0x14) (async) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000240)={0x8000000000000000, 0x4, 0xffffffffffff15b5, 0x5, 0x7}) (async) sendmsg$MPTCP_PM_CMD_FLUSH_ADDRS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="fc000025", @ANYRES16=0x0, @ANYBLOB="00002cbd7000fedbdf250400000030000180080003007f000001140004000000000000000000000000000000000108000700", @ANYRES32=0x0, @ANYBLOB="060005004e2200002c0001800800060005000000060001000a000000060005004e23000008000700", @ANYRES32=r1, @ANYBLOB="060005004e2200003400018008000300ac1414260500020000000000050002000800000006000100020000000800060003000000080003000000000008000300030000000800020004000000080003000700000008000200020000002800018008000300ac1e010108000300ac1414bb14000400fc00000000000000000000000000000008000200040000000800020001000000"], 0xfc}, 0x1, 0x0, 0x0, 0x1}, 0x4080) (async) 00:45:03 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$bt_hci(r0, 0x0, 0x2, &(0x7f0000000080)=""/110, &(0x7f0000000100)=0x6e) unshare(0xc000400) setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000000000)=""/44, 0x1b000, 0x800, 0x5, 0x2}, 0x20) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f00000001c0)={&(0x7f0000000140)={0x7c, r1, 0x2, 0x70bd28, 0x25dfdbff, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x401}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40010}, 0x4081) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB="04000000", @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:45:03 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$bt_hci(r0, 0x0, 0x2, &(0x7f0000000080)=""/110, &(0x7f0000000100)=0x6e) unshare(0xc000400) setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000000000)=""/44, 0x1b000, 0x800, 0x5, 0x2}, 0x20) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) getsockopt$bt_hci(r0, 0x0, 0x2, &(0x7f0000000080)=""/110, &(0x7f0000000100)=0x6e) (async) unshare(0xc000400) (async) setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000000000)=""/44, 0x1b000, 0x800, 0x5, 0x2}, 0x20) (async) 00:45:03 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:03 executing program 4: ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f0000000240)={0x80000000, &(0x7f0000000000)=[{0x80000000}], &(0x7f0000000340)}) ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f00000001c0)={r0, &(0x7f0000000180), &(0x7f00000002c0)}) socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r1 = socket$phonet_pipe(0x23, 0x5, 0x2) shutdown(r1, 0x3) ioctl$KVM_IRQFD(0xffffffffffffffff, 0x4020ae76, &(0x7f0000000100)={0xffffffffffffffff, 0x200, 0x7}) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:03 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) getsockopt$bt_hci(r0, 0x0, 0x2, &(0x7f0000000080)=""/110, &(0x7f0000000100)=0x6e) unshare(0xc000400) setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000000000)=""/44, 0x1b000, 0x800, 0x5, 0x2}, 0x20) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) getsockopt$bt_hci(r0, 0x0, 0x2, &(0x7f0000000080)=""/110, &(0x7f0000000100)=0x6e) (async) unshare(0xc000400) (async) setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000000000)=""/44, 0x1b000, 0x800, 0x5, 0x2}, 0x20) (async) 00:45:03 executing program 4: ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f0000000240)={0x80000000, &(0x7f0000000000)=[{0x80000000}], &(0x7f0000000340)}) ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f00000001c0)={r0, &(0x7f0000000180), &(0x7f00000002c0)}) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async, rerun: 64) r1 = socket$phonet_pipe(0x23, 0x5, 0x2) (rerun: 64) shutdown(r1, 0x3) (async) ioctl$KVM_IRQFD(0xffffffffffffffff, 0x4020ae76, &(0x7f0000000100)={0xffffffffffffffff, 0x200, 0x7}) 00:45:03 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:03 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 32) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:03 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3387.155396] nbd: must specify at least one socket 00:45:03 executing program 2: unshare(0xc000400) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x1000000, &(0x7f0000000000)) r0 = accept4(0xffffffffffffffff, &(0x7f00000000c0)=@ethernet={0x0, @local}, &(0x7f0000000140)=0x80, 0x80800) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f00000002c0)={&(0x7f0000000180), 0xc, &(0x7f0000000280)={&(0x7f0000000200)={0x68, r1, 0x100, 0x70bd25, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}]}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x68}, 0x1, 0x0, 0x0, 0x40010}, 0x4000) 00:45:03 executing program 4: ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f0000000240)={0x80000000, &(0x7f0000000000)=[{0x80000000}], &(0x7f0000000340)}) ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f00000001c0)={r0, &(0x7f0000000180), &(0x7f00000002c0)}) socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r1 = socket$phonet_pipe(0x23, 0x5, 0x2) shutdown(r1, 0x3) ioctl$KVM_IRQFD(0xffffffffffffffff, 0x4020ae76, &(0x7f0000000100)={0xffffffffffffffff, 0x200, 0x7}) ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f0000000240)={0x80000000, &(0x7f0000000000), &(0x7f0000000340)}) (async) ioctl$MEDIA_IOC_ENUM_LINKS(0xffffffffffffffff, 0xc0287c02, &(0x7f00000001c0)={r0, &(0x7f0000000180), &(0x7f00000002c0)}) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async) shutdown(r1, 0x3) (async) ioctl$KVM_IRQFD(0xffffffffffffffff, 0x4020ae76, &(0x7f0000000100)={0xffffffffffffffff, 0x200, 0x7}) (async) 00:45:04 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000500)={0xb4, 0x0, 0x100, 0x70bd2a, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @broadcast}, @MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @rand_addr=0x64010100}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x74}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @private=0xa010102}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}]}, @MPTCP_PM_ATTR_ADDR={0x28, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @private1={0xfc, 0x1, '\x00', 0x1}}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @empty}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0xb4}, 0x1, 0x0, 0x0, 0x4000}, 0x4044) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000080)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000040)={&(0x7f00000002c0)={0x11c, 0x0, 0x800, 0x70bd28, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e24}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xf7}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_ADDR={0x6c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @empty}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xb2}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x4}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @loopback}]}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}]}, 0x11c}, 0x1, 0x0, 0x0, 0x4044051}, 0x642e89a8e22e9776) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:04 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 2: unshare(0xc000400) (async) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x1000000, &(0x7f0000000000)) (async) r0 = accept4(0xffffffffffffffff, &(0x7f00000000c0)=@ethernet={0x0, @local}, &(0x7f0000000140)=0x80, 0x80800) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f00000002c0)={&(0x7f0000000180), 0xc, &(0x7f0000000280)={&(0x7f0000000200)={0x68, r1, 0x100, 0x70bd25, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}]}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x68}, 0x1, 0x0, 0x0, 0x40010}, 0x4000) 00:45:04 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000500)={0xb4, 0x0, 0x100, 0x70bd2a, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @broadcast}, @MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @rand_addr=0x64010100}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x74}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @private=0xa010102}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}]}, @MPTCP_PM_ATTR_ADDR={0x28, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @private1={0xfc, 0x1, '\x00', 0x1}}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @empty}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0xb4}, 0x1, 0x0, 0x0, 0x4000}, 0x4044) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000080)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000040)={&(0x7f00000002c0)={0x11c, 0x0, 0x800, 0x70bd28, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e24}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xf7}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_ADDR={0x6c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @empty}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xb2}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x4}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @loopback}]}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}]}, 0x11c}, 0x1, 0x0, 0x0, 0x4044051}, 0x642e89a8e22e9776) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:04 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 2: unshare(0xc000400) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x1000000, &(0x7f0000000000)) r0 = accept4(0xffffffffffffffff, &(0x7f00000000c0)=@ethernet={0x0, @local}, &(0x7f0000000140)=0x80, 0x80800) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f00000002c0)={&(0x7f0000000180), 0xc, &(0x7f0000000280)={&(0x7f0000000200)={0x68, r1, 0x100, 0x70bd25, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}]}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x68}, 0x1, 0x0, 0x0, 0x40010}, 0x4000) unshare(0xc000400) (async) waitid$P_PIDFD(0x3, 0xffffffffffffffff, 0x0, 0x1000000, &(0x7f0000000000)) (async) accept4(0xffffffffffffffff, &(0x7f00000000c0)=@ethernet={0x0, @local}, &(0x7f0000000140)=0x80, 0x80800) (async) syz_genetlink_get_family_id$mptcp(&(0x7f00000001c0), 0xffffffffffffffff) (async) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r0, &(0x7f00000002c0)={&(0x7f0000000180), 0xc, &(0x7f0000000280)={&(0x7f0000000200)={0x68, r1, 0x100, 0x70bd25, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x3}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}]}, @MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}]}, 0x68}, 0x1, 0x0, 0x0, 0x40010}, 0x4000) (async) 00:45:04 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:04 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) sendmsg$MPTCP_PM_CMD_ADD_ADDR(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000500)={0xb4, 0x0, 0x100, 0x70bd2a, 0x25dfdbfe, {}, [@MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @broadcast}, @MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0xa}]}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @rand_addr=0x64010100}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x74}, @MPTCP_PM_ADDR_ATTR_IF_IDX={0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @private=0xa010102}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}]}, @MPTCP_PM_ATTR_ADDR={0x28, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e21}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @private1={0xfc, 0x1, '\x00', 0x1}}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @empty}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}]}, 0xb4}, 0x1, 0x0, 0x0, 0x4000}, 0x4044) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000080)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000040)={&(0x7f00000002c0)={0x11c, 0x0, 0x800, 0x70bd28, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8}, @MPTCP_PM_ATTR_ADDR={0x34, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e23}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e24}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xf7}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x2}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x4}, @MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x8}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}, @MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x3}, @MPTCP_PM_ATTR_ADDR={0x6c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @empty}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0xb2}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x5}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x4}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @mcast1}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @loopback}]}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e20}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x2}]}]}, 0x11c}, 0x1, 0x0, 0x0, 0x4044051}, 0x642e89a8e22e9776) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:04 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 2: getsockopt(0xffffffffffffffff, 0x7ff, 0x62, &(0x7f0000000000)=""/17, &(0x7f0000000040)=0x11) unshare(0xc000400) 00:45:04 executing program 2: getsockopt(0xffffffffffffffff, 0x7ff, 0x62, &(0x7f0000000000)=""/17, &(0x7f0000000040)=0x11) unshare(0xc000400) 00:45:04 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000180), r0) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r1, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000200)={&(0x7f00000001c0)={0x24, r2, 0x800, 0x70bd2a, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}}, 0x81) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x200007ff, 0x0) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000000c0)) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$KVM_GET_VCPU_EVENTS(r3, 0x8040ae9f, &(0x7f0000000080)) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000040)={0x0, 0x0, 0x0, 0x7fffffff, 0x0, 0x0, 0x5}, &(0x7f0000000280), 0x0) 00:45:04 executing program 2: getsockopt(0xffffffffffffffff, 0x7ff, 0x62, &(0x7f0000000000)=""/17, &(0x7f0000000040)=0x11) (async, rerun: 32) unshare(0xc000400) (rerun: 32) 00:45:04 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x40, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}]}, 0x40}, 0x1, 0x0, 0x0, 0x8004}, 0x40) 00:45:04 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 32) r1 = socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32) r2 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000180), r0) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r1, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000200)={&(0x7f00000001c0)={0x24, r2, 0x800, 0x70bd2a, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}}, 0x81) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x200007ff, 0x0) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000000c0)) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) ioctl$KVM_GET_VCPU_EVENTS(r3, 0x8040ae9f, &(0x7f0000000080)) (async, rerun: 32) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000040)={0x0, 0x0, 0x0, 0x7fffffff, 0x0, 0x0, 0x5}, &(0x7f0000000280), 0x0) (rerun: 32) 00:45:04 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 2: unshare(0x38020500) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_SMI(r0, 0xaeb7) 00:45:04 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x40, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}]}, 0x40}, 0x1, 0x0, 0x0, 0x8004}, 0x40) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x40, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}]}, 0x40}, 0x1, 0x0, 0x0, 0x8004}, 0x40) (async) 00:45:04 executing program 2: unshare(0x38020500) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$KVM_SMI(r0, 0xaeb7) unshare(0x38020500) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_SMI(r0, 0xaeb7) (async) 00:45:04 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r3, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:04 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 2: unshare(0x38020500) (async, rerun: 32) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (rerun: 32) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$KVM_SMI(r0, 0xaeb7) 00:45:04 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000180), r0) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r1, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000200)={&(0x7f00000001c0)={0x24, r2, 0x800, 0x70bd2a, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}}, 0x81) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x200007ff, 0x0) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000000c0)) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$KVM_GET_VCPU_EVENTS(r3, 0x8040ae9f, &(0x7f0000000080)) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000040)={0x0, 0x0, 0x0, 0x7fffffff, 0x0, 0x0, 0x5}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$mptcp(&(0x7f0000000180), r0) (async) sendmsg$MPTCP_PM_CMD_DEL_ADDR(r1, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000200)={&(0x7f00000001c0)={0x24, r2, 0x800, 0x70bd2a, 0x25dfdbfc, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x6}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x5}]}, 0x24}}, 0x81) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0x200007ff, 0x0) (async) ioctl$BTRFS_IOC_START_SYNC(r0, 0x80089418, &(0x7f00000000c0)) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) ioctl$KVM_GET_VCPU_EVENTS(r3, 0x8040ae9f, &(0x7f0000000080)) (async) pselect6(0x40, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x0, &(0x7f0000000040)={0x0, 0x0, 0x0, 0x7fffffff, 0x0, 0x0, 0x5}, &(0x7f0000000280), 0x0) (async) 00:45:04 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:04 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socketpair(0x6, 0x800, 0x80000000, &(0x7f0000000040)) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) read$eventfd(r0, &(0x7f0000000000), 0x8) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 2: unshare(0xc000400) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000002c0)={0xffffffffffffffff, 0xe0, &(0x7f00000001c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, &(0x7f0000000000)=[0x0, 0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x7, &(0x7f0000000040)=[0x0, 0x0, 0x0], &(0x7f0000000080)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f00000000c0)=[{}, {}, {}, {}, {}, {}], 0x30, 0x10, &(0x7f0000000100), &(0x7f0000000300), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000180)}}, 0x10) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_DISCONNECT(r0, 0xab08) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000140)=0x1, 0x4) unshare(0x6000400) 00:45:05 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3388.288720] nbd: must specify at least one socket [ 3388.302822] nbd: couldn't find a device at index 3 00:45:05 executing program 2: unshare(0xc000400) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000002c0)={0xffffffffffffffff, 0xe0, &(0x7f00000001c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, &(0x7f0000000000)=[0x0, 0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x7, &(0x7f0000000040)=[0x0, 0x0, 0x0], &(0x7f0000000080)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f00000000c0)=[{}, {}, {}, {}, {}, {}], 0x30, 0x10, &(0x7f0000000100), &(0x7f0000000300), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000180)}}, 0x10) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_DISCONNECT(r0, 0xab08) (async) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000140)=0x1, 0x4) unshare(0x6000400) 00:45:05 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x40, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}]}, 0x40}, 0x1, 0x0, 0x0, 0x8004}, 0x40) 00:45:05 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) socketpair(0x6, 0x800, 0x80000000, &(0x7f0000000040)) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) read$eventfd(r0, &(0x7f0000000000), 0x8) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 2: unshare(0xc000400) (async, rerun: 32) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000002c0)={0xffffffffffffffff, 0xe0, &(0x7f00000001c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, &(0x7f0000000000)=[0x0, 0x0, 0x0], ""/16, 0x0, 0x0, 0x0, 0x0, 0x3, 0x7, &(0x7f0000000040)=[0x0, 0x0, 0x0], &(0x7f0000000080)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], 0x0, 0x8, &(0x7f00000000c0)=[{}, {}, {}, {}, {}, {}], 0x30, 0x10, &(0x7f0000000100), &(0x7f0000000300), 0x8, 0x10, 0x8, 0x8, &(0x7f0000000180)}}, 0x10) (async, rerun: 32) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_DISCONNECT(r0, 0xab08) (async, rerun: 64) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000140)=0x1, 0x4) (rerun: 64) unshare(0x6000400) 00:45:05 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) socketpair(0x6, 0x800, 0x80000000, &(0x7f0000000040)) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) read$eventfd(r0, &(0x7f0000000000), 0x8) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4}, 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3388.525694] nbd: must specify at least one socket 00:45:05 executing program 4: r0 = syz_open_dev$media(&(0x7f0000000000), 0xfffffffffffffffe, 0x400000) ioctl$MEDIA_IOC_G_TOPOLOGY(0xffffffffffffffff, 0xc0487c04, &(0x7f0000000180)={0x0, 0x6, 0x0, &(0x7f00000002c0)=[{}, {}, {}, {0x80000000}, {}, {}], 0x7, 0x0, &(0x7f0000000500)=[{}, {}, {}, {}, {}, {}, {}], 0x1, 0x0, &(0x7f0000000040)=[{}], 0x2, 0x0, &(0x7f0000000080)=[{}, {}]}) ioctl$MEDIA_IOC_ENUM_LINKS(r0, 0xc0287c02, &(0x7f0000000240)={r1, &(0x7f0000000100), &(0x7f0000000840)}) getpeername(0xffffffffffffffff, &(0x7f00000008c0)=@nl, &(0x7f0000000940)=0x80) socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 4: r0 = syz_open_dev$media(&(0x7f0000000000), 0xfffffffffffffffe, 0x400000) (async, rerun: 32) ioctl$MEDIA_IOC_G_TOPOLOGY(0xffffffffffffffff, 0xc0487c04, &(0x7f0000000180)={0x0, 0x6, 0x0, &(0x7f00000002c0)=[{}, {}, {}, {0x80000000}, {}, {}], 0x7, 0x0, &(0x7f0000000500)=[{}, {}, {}, {}, {}, {}, {}], 0x1, 0x0, &(0x7f0000000040)=[{}], 0x2, 0x0, &(0x7f0000000080)=[{}, {}]}) (rerun: 32) ioctl$MEDIA_IOC_ENUM_LINKS(r0, 0xc0287c02, &(0x7f0000000240)={r1, &(0x7f0000000100), &(0x7f0000000840)}) getpeername(0xffffffffffffffff, &(0x7f00000008c0)=@nl, &(0x7f0000000940)=0x80) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 2: unshare(0x4000680) syz_open_dev$media(&(0x7f0000000040), 0x8, 0x5d1041) ioctl$LOOP_SET_STATUS(0xffffffffffffffff, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x7f, 0x4, 0x1f, 0x18, "047db96ff71328404c91d9f0ff0bc65e0c27c0bad518128d7caf70623ccc488ce27964793ad2575bbb38d052e8f46d5809bed2083747208b58da5d1352203ae0", "68d6d07761c6612a73c7d3a1a81f3dbd58f5981eef5c38d8b46a08c3b070db00", [0x5, 0x4778000000]}) unshare(0x4754824efa822323) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000180)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0x90, 0x0, 0x200, 0x70bd28, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e22}]}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x1}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @ipv4={'\x00', '\xff\xff', @broadcast}}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}]}, 0x90}, 0x1, 0x0, 0x0, 0x2000c004}, 0x41) unshare(0x40900) 00:45:05 executing program 2: unshare(0x4000680) (async) syz_open_dev$media(&(0x7f0000000040), 0x8, 0x5d1041) ioctl$LOOP_SET_STATUS(0xffffffffffffffff, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x7f, 0x4, 0x1f, 0x18, "047db96ff71328404c91d9f0ff0bc65e0c27c0bad518128d7caf70623ccc488ce27964793ad2575bbb38d052e8f46d5809bed2083747208b58da5d1352203ae0", "68d6d07761c6612a73c7d3a1a81f3dbd58f5981eef5c38d8b46a08c3b070db00", [0x5, 0x4778000000]}) (async) unshare(0x4754824efa822323) (async) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000180)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0x90, 0x0, 0x200, 0x70bd28, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e22}]}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x1}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @ipv4={'\x00', '\xff\xff', @broadcast}}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}]}, 0x90}, 0x1, 0x0, 0x0, 0x2000c004}, 0x41) (async) unshare(0x40900) [ 3388.644367] nbd: couldn't find a device at index 3 00:45:05 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x22300004}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x34, r1, 0x100, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ')'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x34}}, 0x24040080) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 4: r0 = syz_open_dev$media(&(0x7f0000000000), 0xfffffffffffffffe, 0x400000) (async) ioctl$MEDIA_IOC_G_TOPOLOGY(0xffffffffffffffff, 0xc0487c04, &(0x7f0000000180)={0x0, 0x6, 0x0, &(0x7f00000002c0)=[{}, {}, {}, {0x80000000}, {}, {}], 0x7, 0x0, &(0x7f0000000500)=[{}, {}, {}, {}, {}, {}, {}], 0x1, 0x0, &(0x7f0000000040)=[{}], 0x2, 0x0, &(0x7f0000000080)=[{}, {}]}) ioctl$MEDIA_IOC_ENUM_LINKS(r0, 0xc0287c02, &(0x7f0000000240)={r1, &(0x7f0000000100), &(0x7f0000000840)}) getpeername(0xffffffffffffffff, &(0x7f00000008c0)=@nl, &(0x7f0000000940)=0x80) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 2: unshare(0x4000680) (async, rerun: 64) syz_open_dev$media(&(0x7f0000000040), 0x8, 0x5d1041) (async, rerun: 64) ioctl$LOOP_SET_STATUS(0xffffffffffffffff, 0x4c02, &(0x7f00000001c0)={0x0, {}, 0x0, {}, 0x7f, 0x4, 0x1f, 0x18, "047db96ff71328404c91d9f0ff0bc65e0c27c0bad518128d7caf70623ccc488ce27964793ad2575bbb38d052e8f46d5809bed2083747208b58da5d1352203ae0", "68d6d07761c6612a73c7d3a1a81f3dbd58f5981eef5c38d8b46a08c3b070db00", [0x5, 0x4778000000]}) unshare(0x4754824efa822323) sendmsg$MPTCP_PM_CMD_GET_LIMITS(0xffffffffffffffff, &(0x7f0000000180)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0x90, 0x0, 0x200, 0x70bd28, 0x25dfdbfd, {}, [@MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x7}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x2}, @MPTCP_PM_ATTR_ADDR={0x14, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x20}, @MPTCP_PM_ADDR_ATTR_PORT={0x6, 0x5, 0x4e22}]}, @MPTCP_PM_ATTR_ADDR={0x4}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x4}, @MPTCP_PM_ATTR_ADDR={0x3c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x1}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x8}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @ipv4={'\x00', '\xff\xff', @broadcast}}, @MPTCP_PM_ADDR_ATTR_ADDR6={0x14, 0x4, @local}]}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}]}, 0x90}, 0x1, 0x0, 0x0, 0x2000c004}, 0x41) unshare(0x40900) 00:45:05 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$sock_SIOCSIFBR(r0, 0x8941, &(0x7f00000000c0)=@get={0x1, &(0x7f0000000000)=""/192, 0x8000000000000000}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:05 executing program 2: ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000000)) unshare(0xc000400) 00:45:05 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$sock_SIOCSIFBR(r0, 0x8941, &(0x7f00000000c0)=@get={0x1, &(0x7f0000000000)=""/192, 0x8000000000000000}) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) ioctl$sock_SIOCSIFBR(r0, 0x8941, &(0x7f00000000c0)=@get={0x1, &(0x7f0000000000)=""/192, 0x8000000000000000}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) 00:45:05 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x22300004}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x34, r1, 0x100, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ')'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x34}}, 0x24040080) 00:45:05 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 2: ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000000)) unshare(0xc000400) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000000)) (async) unshare(0xc000400) (async) 00:45:05 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$sock_SIOCSIFBR(r0, 0x8941, &(0x7f00000000c0)=@get={0x1, &(0x7f0000000000)=""/192, 0x8000000000000000}) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 2: ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000000)) unshare(0xc000400) ioctl$DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE_FD(0xffffffffffffffff, 0xc01064c2, &(0x7f0000000000)) (async) unshare(0xc000400) (async) 00:45:05 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x22300004}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x34, r1, 0x100, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ')'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x34}}, 0x24040080) 00:45:05 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:05 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 3: r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x100, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x20000000) 00:45:05 executing program 2: ioctl$NBD_DISCONNECT(0xffffffffffffffff, 0xab08) unshare(0xc000400) 00:45:05 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) 00:45:05 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:05 executing program 2: ioctl$NBD_DISCONNECT(0xffffffffffffffff, 0xab08) (async) unshare(0xc000400) 00:45:05 executing program 3: r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x100, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x20000000) 00:45:05 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:05 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 64) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (rerun: 64) 00:45:06 executing program 2: ioctl$NBD_DISCONNECT(0xffffffffffffffff, 0xab08) (async) unshare(0xc000400) 00:45:06 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 3: r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async, rerun: 64) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x100, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x20000000) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 2: unshare(0x0) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x11}, 0x8) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000040)=0xffffffffffffffff, 0x4) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4$phonet_pipe(r0, &(0x7f0000000100), &(0x7f0000000040)=0x10, 0x80000) accept4$phonet_pipe(r1, &(0x7f0000000080), &(0x7f00000000c0)=0x10, 0x0) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x7fffffffffffffff}, &(0x7f0000000280), 0x0) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 2: unshare(0x0) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x11}, 0x8) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000040)=0xffffffffffffffff, 0x4) unshare(0x0) (async) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x11}, 0x8) (async) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000040)=0xffffffffffffffff, 0x4) (async) 00:45:06 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4$phonet_pipe(r0, &(0x7f0000000100), &(0x7f0000000040)=0x10, 0x80000) accept4$phonet_pipe(r1, &(0x7f0000000080), &(0x7f00000000c0)=0x10, 0x0) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x7fffffffffffffff}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) accept4$phonet_pipe(r0, &(0x7f0000000100), &(0x7f0000000040)=0x10, 0x80000) (async) accept4$phonet_pipe(r1, &(0x7f0000000080), &(0x7f00000000c0)=0x10, 0x0) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x7fffffffffffffff}, &(0x7f0000000280), 0x0) (async) 00:45:06 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) r1 = accept4$phonet_pipe(r0, &(0x7f0000000100), &(0x7f0000000040)=0x10, 0x80000) accept4$phonet_pipe(r1, &(0x7f0000000080), &(0x7f00000000c0)=0x10, 0x0) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x7fffffffffffffff}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) accept4$phonet_pipe(r0, &(0x7f0000000100), &(0x7f0000000040)=0x10, 0x80000) (async) accept4$phonet_pipe(r1, &(0x7f0000000080), &(0x7f00000000c0)=0x10, 0x0) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x7fffffffffffffff}, &(0x7f0000000280), 0x0) (async) 00:45:06 executing program 2: unshare(0x0) (async) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x11}, 0x8) (async) bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000040)=0xffffffffffffffff, 0x4) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0xfffffffffffffdfd, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000280)=ANY=[@ANYBLOB="38000000642a4c6dc4185e8d26a6acf6d54a0944866c65ffdebff57660c974293a8c1e61917af01126604b815e6de39c1639742c5e2ecccc49d97e04c7b5f76ad0ae7ad9c190e51779cfb3363316cf303c914b174031e34a59a8b3cbd380a3c0ea5701ea", @ANYRES16=r3, @ANYBLOB="000227bd7000fcdbdf25030000000c00060003000000000000000c00040006000000000000000c0003000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x8000}, 0x1) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x12, 0x1000, 0x9, 0x59, 0x10, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x2, 0x4}, 0x48) bpf$MAP_CREATE(0x0, &(0x7f0000000080)=@base={0x12, 0xff, 0x4, 0x8, 0x25, r0, 0x2, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x4}, 0x48) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4f84, 0x0, 0x0, 0xffffffffffffffff}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x4}, &(0x7f0000000280), 0x0) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 2: unshare(0xc000400) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000000)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL(0xffffffffffffffff, 0xc01864cd, &(0x7f00000000c0)={&(0x7f0000000040)=[r0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000080)=[0x8d, 0x2, 0x0, 0x1, 0xffffffffffff3904], 0x6}) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0xfffffffffffffdfd, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000280)=ANY=[@ANYBLOB="38000000642a4c6dc4185e8d26a6acf6d54a0944866c65ffdebff57660c974293a8c1e61917af01126604b815e6de39c1639742c5e2ecccc49d97e04c7b5f76ad0ae7ad9c190e51779cfb3363316cf303c914b174031e34a59a8b3cbd380a3c0ea5701ea", @ANYRES16=r3, @ANYBLOB="000227bd7000fcdbdf25030000000c00060003000000000000000c00040006000000000000000c0003000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x8000}, 0x1) 00:45:06 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x12, 0x1000, 0x9, 0x59, 0x10, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x2, 0x4}, 0x48) bpf$MAP_CREATE(0x0, &(0x7f0000000080)=@base={0x12, 0xff, 0x4, 0x8, 0x25, r0, 0x2, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x4}, 0x48) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4f84, 0x0, 0x0, 0xffffffffffffffff}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x4}, &(0x7f0000000280), 0x0) socket$phonet_pipe(0x23, 0x5, 0x2) (async) bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x12, 0x1000, 0x9, 0x59, 0x10, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x2, 0x4}, 0x48) (async) bpf$MAP_CREATE(0x0, &(0x7f0000000080)=@base={0x12, 0xff, 0x4, 0x8, 0x25, r0, 0x2, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x4}, 0x48) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4f84, 0x0, 0x0, 0xffffffffffffffff}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x4}, &(0x7f0000000280), 0x0) (async) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 2: unshare(0xc000400) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000000)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL(0xffffffffffffffff, 0xc01864cd, &(0x7f00000000c0)={&(0x7f0000000040)=[r0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000080)=[0x8d, 0x2, 0x0, 0x1, 0xffffffffffff3904], 0x6}) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:06 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x12, 0x1000, 0x9, 0x59, 0x10, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x2, 0x4}, 0x48) bpf$MAP_CREATE(0x0, &(0x7f0000000080)=@base={0x12, 0xff, 0x4, 0x8, 0x25, r0, 0x2, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x4}, 0x48) (async) pselect6(0x40, &(0x7f0000000140)={0x0, 0x0, 0x4f84, 0x0, 0x0, 0xffffffffffffffff}, 0x0, &(0x7f0000000200)={0x8, 0x0, 0x0, 0x4}, &(0x7f0000000280), 0x0) 00:45:06 executing program 2: unshare(0xc000400) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000000)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL(0xffffffffffffffff, 0xc01864cd, &(0x7f00000000c0)={&(0x7f0000000040)=[r0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000080)=[0x8d, 0x2, 0x0, 0x1, 0xffffffffffff3904], 0x6}) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3390.145234] ieee802154 phy0 wpan0: encryption failed: -22 [ 3390.150914] ieee802154 phy1 wpan1: encryption failed: -22 00:45:06 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0xfffffffffffffdfd, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000280)=ANY=[@ANYBLOB="38000000642a4c6dc4185e8d26a6acf6d54a0944866c65ffdebff57660c974293a8c1e61917af01126604b815e6de39c1639742c5e2ecccc49d97e04c7b5f76ad0ae7ad9c190e51779cfb3363316cf303c914b174031e34a59a8b3cbd380a3c0ea5701ea", @ANYRES16=r3, @ANYBLOB="000227bd7000fcdbdf25030000000c00060003000000000000000c00040006000000000000000c0003000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x8000}, 0x1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0xfffffffffffffdfd, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) (async) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000240)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000200)={&(0x7f0000000280)=ANY=[@ANYBLOB="38000000642a4c6dc4185e8d26a6acf6d54a0944866c65ffdebff57660c974293a8c1e61917af01126604b815e6de39c1639742c5e2ecccc49d97e04c7b5f76ad0ae7ad9c190e51779cfb3363316cf303c914b174031e34a59a8b3cbd380a3c0ea5701ea", @ANYRES16=r3, @ANYBLOB="000227bd7000fcdbdf25030000000c00060003000000000000000c00040006000000000000000c0003000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x8000}, 0x1) (async) 00:45:06 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:06 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$loop(&(0x7f0000000000), 0x800, 0x1a9d664663bec473) ioctl$LOOP_CHANGE_FD(r0, 0x4c06, 0xffffffffffffffff) openat$proc_mixer(0xffffffffffffff9c, &(0x7f0000000080)='/proc/asound/card1/oss_mixer\x00', 0x410000, 0x0) syz_open_dev$loop(&(0x7f0000000100), 0x2, 0x101c01) pselect6(0x40, &(0x7f0000000040)={0x0, 0x2, 0x0, 0x0, 0x0, 0x5, 0x5}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffffffff, 0x0, 0x0, 0x4, 0x3}, &(0x7f0000000280), 0x0) bpf$BPF_PROG_GET_NEXT_ID(0xb, &(0x7f00000000c0)={0x1}, 0x8) 00:45:06 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$loop(&(0x7f0000000000), 0x800, 0x1a9d664663bec473) ioctl$LOOP_CHANGE_FD(r0, 0x4c06, 0xffffffffffffffff) (async) openat$proc_mixer(0xffffffffffffff9c, &(0x7f0000000080)='/proc/asound/card1/oss_mixer\x00', 0x410000, 0x0) (async) syz_open_dev$loop(&(0x7f0000000100), 0x2, 0x101c01) (async) pselect6(0x40, &(0x7f0000000040)={0x0, 0x2, 0x0, 0x0, 0x0, 0x5, 0x5}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffffffff, 0x0, 0x0, 0x4, 0x3}, &(0x7f0000000280), 0x0) bpf$BPF_PROG_GET_NEXT_ID(0xb, &(0x7f00000000c0)={0x1}, 0x8) 00:45:07 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) setsockopt$MRT6_DEL_MIF(r1, 0x29, 0xcb, &(0x7f0000000000)={0x0, 0x0, 0x20}, 0xc) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) write$proc_mixer(r1, &(0x7f0000000140)=[{'LINE2', @val={' \'', 'Master Playback'}}, {'RADIO', @val={' \'', 'Master Capture Switch'}}, {'RADIO', @val={' \'', 'Master Playback Switch'}}, {'ALTPCM', @void}, {'VIDEO', @val={' \'', 'Line Capture'}}], 0xc5) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_SET_BLKSIZE(r0, 0xab01, 0x2) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000040), 0x4) 00:45:07 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) r0 = syz_open_dev$loop(&(0x7f0000000000), 0x800, 0x1a9d664663bec473) ioctl$LOOP_CHANGE_FD(r0, 0x4c06, 0xffffffffffffffff) openat$proc_mixer(0xffffffffffffff9c, &(0x7f0000000080)='/proc/asound/card1/oss_mixer\x00', 0x410000, 0x0) syz_open_dev$loop(&(0x7f0000000100), 0x2, 0x101c01) pselect6(0x40, &(0x7f0000000040)={0x0, 0x2, 0x0, 0x0, 0x0, 0x5, 0x5}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffffffff, 0x0, 0x0, 0x4, 0x3}, &(0x7f0000000280), 0x0) bpf$BPF_PROG_GET_NEXT_ID(0xb, &(0x7f00000000c0)={0x1}, 0x8) socket$phonet_pipe(0x23, 0x5, 0x2) (async) syz_open_dev$loop(&(0x7f0000000000), 0x800, 0x1a9d664663bec473) (async) ioctl$LOOP_CHANGE_FD(r0, 0x4c06, 0xffffffffffffffff) (async) openat$proc_mixer(0xffffffffffffff9c, &(0x7f0000000080)='/proc/asound/card1/oss_mixer\x00', 0x410000, 0x0) (async) syz_open_dev$loop(&(0x7f0000000100), 0x2, 0x101c01) (async) pselect6(0x40, &(0x7f0000000040)={0x0, 0x2, 0x0, 0x0, 0x0, 0x5, 0x5}, 0x0, &(0x7f0000000200)={0x8, 0xffffffffffffffff, 0x0, 0x0, 0x4, 0x3}, &(0x7f0000000280), 0x0) (async) bpf$BPF_PROG_GET_NEXT_ID(0xb, &(0x7f00000000c0)={0x1}, 0x8) (async) 00:45:07 executing program 2: unshare(0xc000400) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) setsockopt$MRT6_DEL_MIF(r1, 0x29, 0xcb, &(0x7f0000000000)={0x0, 0x0, 0x20}, 0xc) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) write$proc_mixer(r1, &(0x7f0000000140)=[{'LINE2', @val={' \'', 'Master Playback'}}, {'RADIO', @val={' \'', 'Master Capture Switch'}}, {'RADIO', @val={' \'', 'Master Playback Switch'}}, {'ALTPCM', @void}, {'VIDEO', @val={' \'', 'Line Capture'}}], 0xc5) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_SET_BLKSIZE(r0, 0xab01, 0x2) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000040), 0x4) unshare(0xc000400) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) setsockopt$MRT6_DEL_MIF(r1, 0x29, 0xcb, &(0x7f0000000000)={0x0, 0x0, 0x20}, 0xc) (async) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) (async) write$proc_mixer(r1, &(0x7f0000000140)=[{'LINE2', @val={' \'', 'Master Playback'}}, {'RADIO', @val={' \'', 'Master Capture Switch'}}, {'RADIO', @val={' \'', 'Master Playback Switch'}}, {'ALTPCM', @void}, {'VIDEO', @val={' \'', 'Line Capture'}}], 0xc5) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) (async) ioctl$NBD_SET_BLKSIZE(r0, 0xab01, 0x2) (async) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000040), 0x4) (async) [ 3390.361606] nla_parse: 91 callbacks suppressed [ 3390.361614] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3390.394677] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) getsockopt$inet6_mreq(r3, 0x29, 0x0, &(0x7f0000000000)={@local}, &(0x7f0000000140)=0x14) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00#\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) 00:45:07 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 2: unshare(0xc000400) (async) r0 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) setsockopt$MRT6_DEL_MIF(r1, 0x29, 0xcb, &(0x7f0000000000)={0x0, 0x0, 0x20}, 0xc) (async) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) (async) write$proc_mixer(r1, &(0x7f0000000140)=[{'LINE2', @val={' \'', 'Master Playback'}}, {'RADIO', @val={' \'', 'Master Capture Switch'}}, {'RADIO', @val={' \'', 'Master Playback Switch'}}, {'ALTPCM', @void}, {'VIDEO', @val={' \'', 'Line Capture'}}], 0xc5) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r0, 0x0, 0x0}, 0x10) ioctl$NBD_SET_BLKSIZE(r0, 0xab01, 0x2) setsockopt$MRT6_ASSERT(r0, 0x29, 0xcf, &(0x7f0000000040), 0x4) 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) getsockopt$inet6_mreq(r3, 0x29, 0x0, &(0x7f0000000000)={@local}, &(0x7f0000000140)=0x14) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00#\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) getsockopt$inet6_mreq(r3, 0x29, 0x0, &(0x7f0000000000)={@local}, &(0x7f0000000140)=0x14) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00#\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) (async) 00:45:07 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$dri(&(0x7f0000000000), 0x10001, 0x400400) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000100)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000080)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r0, 0xc01064c4, &(0x7f00000000c0)={&(0x7f0000000180)=[0x0, 0x0, 0x0, 0x0, 0x0, r1, 0x0, 0x0, 0x0, r3, r2, r2], 0xc}) 00:45:07 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000000), 0x9, 0x920c0) bind$xdp(r0, &(0x7f0000000040)={0x2c, 0x8, 0x0, 0x9}, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$KVM_GET_REGS(r1, 0x8090ae81, &(0x7f0000000140)) unshare(0xc000400) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000080)={0x2, "eb29fee8fdcbe1d661e02a75967852184b4f61f5335c811d3c8208b4138bea81"}) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) 00:45:07 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) r0 = syz_open_dev$dri(&(0x7f0000000000), 0x10001, 0x400400) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0}) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000100)={0x0}) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000080)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r0, 0xc01064c4, &(0x7f00000000c0)={&(0x7f0000000180)=[0x0, 0x0, 0x0, 0x0, 0x0, r1, 0x0, 0x0, 0x0, r3, r2, r2], 0xc}) [ 3390.577373] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3390.601457] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:07 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000000), 0x9, 0x920c0) bind$xdp(r0, &(0x7f0000000040)={0x2c, 0x8, 0x0, 0x9}, 0x10) (async) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$KVM_GET_REGS(r1, 0x8090ae81, &(0x7f0000000140)) (async) unshare(0xc000400) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000080)={0x2, "eb29fee8fdcbe1d661e02a75967852184b4f61f5335c811d3c8208b4138bea81"}) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:07 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) getsockopt$inet6_mreq(r3, 0x29, 0x0, &(0x7f0000000000)={@local}, &(0x7f0000000140)=0x14) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00#\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) getsockopt$inet6_mreq(r3, 0x29, 0x0, &(0x7f0000000000)={@local}, &(0x7f0000000140)=0x14) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='\x00\x00#\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff06000000000000000000"], 0x20}}, 0x0) (async) 00:45:07 executing program 2: r0 = syz_open_dev$vcsn(&(0x7f0000000000), 0x9, 0x920c0) bind$xdp(r0, &(0x7f0000000040)={0x2c, 0x8, 0x0, 0x9}, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) ioctl$KVM_GET_REGS(r1, 0x8090ae81, &(0x7f0000000140)) unshare(0xc000400) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000080)={0x2, "eb29fee8fdcbe1d661e02a75967852184b4f61f5335c811d3c8208b4138bea81"}) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) syz_open_dev$vcsn(&(0x7f0000000000), 0x9, 0x920c0) (async) bind$xdp(r0, &(0x7f0000000040)={0x2c, 0x8, 0x0, 0x9}, 0x10) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r1, 0x0, 0x0}, 0x10) (async) ioctl$KVM_GET_REGS(r1, 0x8090ae81, &(0x7f0000000140)) (async) unshare(0xc000400) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000080)={0x2, "eb29fee8fdcbe1d661e02a75967852184b4f61f5335c811d3c8208b4138bea81"}) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r2, 0x0, 0x0}, 0x10) (async) ioctl$LOOP_SET_FD(r2, 0x4c00, r0) (async) 00:45:07 executing program 4: socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) r0 = syz_open_dev$dri(&(0x7f0000000000), 0x10001, 0x400400) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(0xffffffffffffffff, 0xc00864bf, &(0x7f0000000040)={0x0}) (async) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000100)={0x0}) ioctl$DRM_IOCTL_SYNCOBJ_CREATE(r0, 0xc00864bf, &(0x7f0000000080)={0x0, 0x1}) ioctl$DRM_IOCTL_SYNCOBJ_RESET(r0, 0xc01064c4, &(0x7f00000000c0)={&(0x7f0000000180)=[0x0, 0x0, 0x0, 0x0, 0x0, r1, 0x0, 0x0, 0x0, r3, r2, r2], 0xc}) 00:45:07 executing program 2: ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000040)={'ip6_vti0\x00', 0x8000}) unshare(0x80) setsockopt$sock_void(0xffffffffffffffff, 0x1, 0x24, 0x0, 0x0) unshare(0x12000000) clock_getres(0x7, &(0x7f0000000000)) unshare(0x10010080) 00:45:07 executing program 4: ioctl$KVM_SMI(0xffffffffffffffff, 0xaeb7) socket(0x2, 0x3, 0xff) socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) socket$igmp6(0xa, 0x3, 0x2) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x10000}, 0x8) [ 3390.744005] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3390.772778] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) setsockopt$inet_dccp_buf(0xffffffffffffffff, 0x21, 0x2, &(0x7f0000000140)="2c262e0fe1c1248e42eace796fe1987ab651c0c4650da85fcc370de02505c471f18054f863d18ccd8c8010653c482896c33950d851318767a3866edfc3539225fb61423884324a1f559c97860e50bcac3ea430e3f710303773afca115dfb1c32b4707ec1e850d1e09fcc6f036d0cfbefdb06de9917048d6f6287a08b75cc57bd1705228650e468977ccebba9a4677628bea4b14b674c607891838534aa7051e6793760af9f633ea1557469adeae531041de0f015b8b739221ff68254d616cee700bf1fbe334023a832f41b2ca1fd0be7142815b85410fc268957fc7970b09ca5d59bc48de7a920b969", 0xe9) 00:45:07 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:07 executing program 2: ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000040)={'ip6_vti0\x00', 0x8000}) unshare(0x80) setsockopt$sock_void(0xffffffffffffffff, 0x1, 0x24, 0x0, 0x0) unshare(0x12000000) clock_getres(0x7, &(0x7f0000000000)) unshare(0x10010080) ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000040)={'ip6_vti0\x00', 0x8000}) (async) unshare(0x80) (async) setsockopt$sock_void(0xffffffffffffffff, 0x1, 0x24, 0x0, 0x0) (async) unshare(0x12000000) (async) clock_getres(0x7, &(0x7f0000000000)) (async) unshare(0x10010080) (async) 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 2: ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000040)={'ip6_vti0\x00', 0x8000}) unshare(0x80) setsockopt$sock_void(0xffffffffffffffff, 0x1, 0x24, 0x0, 0x0) unshare(0x12000000) clock_getres(0x7, &(0x7f0000000000)) unshare(0x10010080) ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000040)={'ip6_vti0\x00', 0x8000}) (async) unshare(0x80) (async) setsockopt$sock_void(0xffffffffffffffff, 0x1, 0x24, 0x0, 0x0) (async) unshare(0x12000000) (async) clock_getres(0x7, &(0x7f0000000000)) (async) unshare(0x10010080) (async) 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) setsockopt$inet_dccp_buf(0xffffffffffffffff, 0x21, 0x2, &(0x7f0000000140)="2c262e0fe1c1248e42eace796fe1987ab651c0c4650da85fcc370de02505c471f18054f863d18ccd8c8010653c482896c33950d851318767a3866edfc3539225fb61423884324a1f559c97860e50bcac3ea430e3f710303773afca115dfb1c32b4707ec1e850d1e09fcc6f036d0cfbefdb06de9917048d6f6287a08b75cc57bd1705228650e468977ccebba9a4677628bea4b14b674c607891838534aa7051e6793760af9f633ea1557469adeae531041de0f015b8b739221ff68254d616cee700bf1fbe334023a832f41b2ca1fd0be7142815b85410fc268957fc7970b09ca5d59bc48de7a920b969", 0xe9) [ 3390.883133] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3390.911131] nbd: must specify at least one socket 00:45:07 executing program 4: ioctl$KVM_SMI(0xffffffffffffffff, 0xaeb7) (async) socket(0x2, 0x3, 0xff) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async, rerun: 64) socket$igmp6(0xa, 0x3, 0x2) (async, rerun: 64) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x10000}, 0x8) 00:45:07 executing program 2: unshare(0xc000400) clock_getres(0x5, &(0x7f0000000000)) [ 3390.988333] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3391.018827] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:07 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:07 executing program 4: ioctl$KVM_SMI(0xffffffffffffffff, 0xaeb7) socket(0x2, 0x3, 0xff) (async) socket$phonet_pipe(0x23, 0x5, 0x2) (async, rerun: 64) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async, rerun: 64) socket$igmp6(0xa, 0x3, 0x2) (async) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x10000}, 0x8) 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3391.051626] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3391.076416] nbd: must specify at least one socket 00:45:07 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 64) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) setsockopt$inet_dccp_buf(0xffffffffffffffff, 0x21, 0x2, &(0x7f0000000140)="2c262e0fe1c1248e42eace796fe1987ab651c0c4650da85fcc370de02505c471f18054f863d18ccd8c8010653c482896c33950d851318767a3866edfc3539225fb61423884324a1f559c97860e50bcac3ea430e3f710303773afca115dfb1c32b4707ec1e850d1e09fcc6f036d0cfbefdb06de9917048d6f6287a08b75cc57bd1705228650e468977ccebba9a4677628bea4b14b674c607891838534aa7051e6793760af9f633ea1557469adeae531041de0f015b8b739221ff68254d616cee700bf1fbe334023a832f41b2ca1fd0be7142815b85410fc268957fc7970b09ca5d59bc48de7a920b969", 0xe9) 00:45:07 executing program 2: unshare(0xc000400) clock_getres(0x5, &(0x7f0000000000)) 00:45:07 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:07 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) accept4$phonet_pipe(r0, 0xffffffffffffffff, &(0x7f0000000000), 0x800) [ 3391.194905] nbd: must specify a size in bytes for the device 00:45:07 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:07 executing program 2: unshare(0xc000400) (async) clock_getres(0x5, &(0x7f0000000000)) 00:45:08 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3391.341948] nbd: must specify a size in bytes for the device 00:45:08 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) accept4$phonet_pipe(r0, 0xffffffffffffffff, &(0x7f0000000000), 0x800) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) accept4$phonet_pipe(r0, 0xffffffffffffffff, &(0x7f0000000000), 0x800) (async) [ 3391.501111] nbd: must specify a size in bytes for the device 00:45:08 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf004114}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)=ANY=[@ANYBLOB="20fcdf00", @ANYRES16=r1, @ANYBLOB="000429bd7000fedbdf25030000000c0004000100000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x10}, 0x1) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:08 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 4: r0 = socket$phonet_pipe(0x23, 0x5, 0x2) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) accept4$phonet_pipe(r0, 0xffffffffffffffff, &(0x7f0000000000), 0x800) socket$phonet_pipe(0x23, 0x5, 0x2) (async) pselect6(0x40, &(0x7f0000000140), 0x0, &(0x7f0000000200)={0x8}, &(0x7f0000000280), 0x0) (async) accept4$phonet_pipe(r0, 0xffffffffffffffff, &(0x7f0000000000), 0x800) (async) 00:45:08 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf004114}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)=ANY=[@ANYBLOB="20fcdf00", @ANYRES16=r1, @ANYBLOB="000429bd7000fedbdf25030000000c0004000100000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x10}, 0x1) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:08 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3391.944616] nbd: must specify at least one socket 00:45:08 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf004114}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)=ANY=[@ANYBLOB="20fcdf00", @ANYRES16=r1, @ANYBLOB="000429bd7000fedbdf25030000000c0004000100000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x10}, 0x1) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:08 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3392.126224] nbd: nbd0 already in use [ 3392.165775] nbd: nbd4 already in use 00:45:08 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x2c, r1, 0x10, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x200}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000001}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4090}, 0x4001) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:08 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:08 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:08 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x2c, r1, 0x10, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x200}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000001}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4090}, 0x4001) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) [ 3392.364718] nbd: must specify at least one socket 00:45:09 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:09 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3392.435530] nbd: must specify at least one socket 00:45:09 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000180)={&(0x7f0000000140)={0x2c, r1, 0x10, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x200}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000001}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4090}, 0x4001) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:09 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x0) 00:45:09 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 3: ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000000)=0x2) ioctl$KVM_S390_INTERRUPT_CPU(0xffffffffffffffff, 0x4010ae94, &(0x7f0000000140)={0x10000, 0xb5b, 0x5}) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r4) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) r9 = socket(0x29, 0x80000, 0x401) r10 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r10, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000002c0)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000280)={&(0x7f0000000380)=ANY=[@ANYBLOB="90000000", @ANYRES16=r5, @ANYBLOB="200003000000fddbdf25020000000c0005002a010000000000000c00030005000000000000000c00030004000000000000000c00060001000000000000004400078008000100", @ANYRES32=r7, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r8, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r9, @ANYBLOB="08000100", @ANYRES32=r10, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0800010000000000227353dd0f299d447071f7bdfc7fccb17c5f79052f5d8f7b41b8205e24a0cee39d889d015ea81f1079fbdb4c9f306af547de6a9da1c826d6acc20f0c92c49453afdcc31c0f043e35012c8ddc30a6a853384668fa59f80e06e8300543948960c177d2302af427acdd3291251601fb74325e87813027edd62d3a7861b4fc0db04ad6e9db882d9eb980dbc711a826f2af6d86cf863be78109988cd4ee9f74985d3fb7"], 0x90}, 0x1, 0x0, 0x0, 0x84}, 0x80d5) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x10, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:09 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:09 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:09 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3392.818557] nbd: couldn't find a device at index 3 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 3: ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000000)=0x2) (async) ioctl$KVM_S390_INTERRUPT_CPU(0xffffffffffffffff, 0x4010ae94, &(0x7f0000000140)={0x10000, 0xb5b, 0x5}) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) (async) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r4) (async) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) (async) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) (async, rerun: 64) r9 = socket(0x29, 0x80000, 0x401) (async, rerun: 64) r10 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r10, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000002c0)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000280)={&(0x7f0000000380)=ANY=[@ANYBLOB="90000000", @ANYRES16=r5, @ANYBLOB="200003000000fddbdf25020000000c0005002a010000000000000c00030005000000000000000c00030004000000000000000c00060001000000000000004400078008000100", @ANYRES32=r7, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r8, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r9, @ANYBLOB="08000100", @ANYRES32=r10, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0800010000000000227353dd0f299d447071f7bdfc7fccb17c5f79052f5d8f7b41b8205e24a0cee39d889d015ea81f1079fbdb4c9f306af547de6a9da1c826d6acc20f0c92c49453afdcc31c0f043e35012c8ddc30a6a853384668fa59f80e06e8300543948960c177d2302af427acdd3291251601fb74325e87813027edd62d3a7861b4fc0db04ad6e9db882d9eb980dbc711a826f2af6d86cf863be78109988cd4ee9f74985d3fb7"], 0x90}, 0x1, 0x0, 0x0, 0x84}, 0x80d5) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x10, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) [ 3392.841257] nbd: must specify at least one socket 00:45:09 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3393.068438] nbd: must specify at least one socket 00:45:09 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 3: ioctl$KVM_S390_VCPU_FAULT(0xffffffffffffffff, 0x4008ae52, &(0x7f0000000000)=0x2) ioctl$KVM_S390_INTERRUPT_CPU(0xffffffffffffffff, 0x4010ae94, &(0x7f0000000140)={0x10000, 0xb5b, 0x5}) (async) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 32) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)={0x14}, 0x14}}, 0x0) r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r4) (async, rerun: 64) r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64) sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000300)={&(0x7f0000000280)={0x28, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}}, 0x0) (async) r7 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r7, 0x0, 0x0}, 0x10) (async) r8 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r8, 0x0, 0x0}, 0x10) (async) r9 = socket(0x29, 0x80000, 0x401) r10 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r10, 0x0, 0x0}, 0x10) (async) sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000002c0)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000280)={&(0x7f0000000380)=ANY=[@ANYBLOB="90000000", @ANYRES16=r5, @ANYBLOB="200003000000fddbdf25020000000c0005002a010000000000000c00030005000000000000000c00030004000000000000000c00060001000000000000004400078008000100", @ANYRES32=r7, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r8, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r9, @ANYBLOB="08000100", @ANYRES32=r10, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0800010000000000227353dd0f299d447071f7bdfc7fccb17c5f79052f5d8f7b41b8205e24a0cee39d889d015ea81f1079fbdb4c9f306af547de6a9da1c826d6acc20f0c92c49453afdcc31c0f043e35012c8ddc30a6a853384668fa59f80e06e8300543948960c177d2302af427acdd3291251601fb74325e87813027edd62d3a7861b4fc0db04ad6e9db882d9eb980dbc711a826f2af6d86cf863be78109988cd4ee9f74985d3fb7"], 0x90}, 0x1, 0x0, 0x0, 0x84}, 0x80d5) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x10, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:09 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:09 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:09 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:10 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:10 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600007d2245be9bd9c4"], 0x20}}, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000000), 0x10001, 0x200100) ioctl$NBD_CLEAR_QUE(r3, 0xab05) 00:45:10 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:10 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3394.134888] nbd: must specify at least one socket 00:45:10 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600007d2245be9bd9c4"], 0x20}}, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000000), 0x10001, 0x200100) ioctl$NBD_CLEAR_QUE(r3, 0xab05) 00:45:10 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:10 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:10 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600007d2245be9bd9c4"], 0x20}}, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000000), 0x10001, 0x200100) ioctl$NBD_CLEAR_QUE(r3, 0xab05) [ 3394.315442] nbd: must specify at least one socket 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000000)={0x400000000000000, 0x4, 0x81, 0x8}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)={0x2c, r1, 0x4, 0x0, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x2c}}, 0x0) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000000)={0x400000000000000, 0x4, 0x81, 0x8}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)={0x2c, r1, 0x4, 0x0, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x2c}}, 0x0) 00:45:11 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000000)={0x400000000000000, 0x4, 0x81, 0x8}) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)={0x2c, r1, 0x4, 0x0, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x2c}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) ioctl$KVM_X86_SET_MCE(0xffffffffffffffff, 0x4040ae9e, &(0x7f0000000000)={0x400000000000000, 0x4, 0x81, 0x8}) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)={0x2c, r1, 0x4, 0x0, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x2c}}, 0x0) (async) [ 3394.679580] nbd: nbd5 already in use 00:45:11 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x60, r1, 0x8, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '{#\'*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xe26d}]}, 0x60}, 0x1, 0x0, 0x0, 0x44}, 0x40010) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600000000000062b475a385863207c0f8ffb36316ea000000"], 0x20}}, 0x0) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3394.907590] nbd: must specify at least one socket 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x60, r1, 0x8, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '{#\'*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xe26d}]}, 0x60}, 0x1, 0x0, 0x0, 0x44}, 0x40010) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600000000000062b475a385863207c0f8ffb36316ea000000"], 0x20}}, 0x0) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000240)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000200)={&(0x7f0000000180)={0x60, r1, 0x8, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '{#\'*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x20}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xe26d}]}, 0x60}, 0x1, 0x0, 0x0, 0x44}, 0x40010) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff0600000000000062b475a385863207c0f8ffb36316ea000000"], 0x20}}, 0x0) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3395.066608] nbd: must specify at least one socket 00:45:11 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:11 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:11 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x6, 'wg2\x00', {0xffffffff}, 0xff80}) [ 3395.183549] nbd: must specify at least one socket 00:45:12 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x6, 'wg2\x00', {0xffffffff}, 0xff80}) 00:45:12 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(0x0, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x6, 'wg2\x00', {0xffffffff}, 0xff80}) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (async) ioctl$sock_SIOCGIFVLAN_SET_VLAN_NAME_TYPE_CMD(0xffffffffffffffff, 0x8982, &(0x7f0000000000)={0x6, 'wg2\x00', {0xffffffff}, 0xff80}) (async) [ 3395.437308] nla_parse: 93 callbacks suppressed [ 3395.437317] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3395.451873] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:12 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3395.501981] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3395.517307] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:12 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3395.583692] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3395.618820] nbd: must specify at least one socket 00:45:12 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3395.640548] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3395.659465] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3395.670267] nbd: must specify at least one socket 00:45:12 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x0, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3395.712397] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. [ 3395.728651] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3395.801208] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:12 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:12 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:12 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:12 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x98, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x98}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:12 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:12 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3396.284983] nbd: must specify at least one socket 00:45:13 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:13 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:13 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3396.418127] nbd: must specify at least one socket 00:45:13 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)=ANY=[@ANYBLOB="14000000", @ANYRES16=0x0, @ANYBLOB="e3ffffff00000000000003000000"], 0x14}}, 0x0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff400"/13], 0x20}}, 0x0) 00:45:13 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)=ANY=[@ANYBLOB="14000000", @ANYRES16=0x0, @ANYBLOB="e3ffffff00000000000003000000"], 0x14}}, 0x0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff400"/13], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)=ANY=[@ANYBLOB="14000000", @ANYRES16=0x0, @ANYBLOB="e3ffffff00000000000003000000"], 0x14}}, 0x0) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff400"/13], 0x20}}, 0x0) (async) 00:45:13 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000680)={&(0x7f0000000580)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000640)={&(0x7f0000000600)=ANY=[@ANYBLOB="14000000", @ANYRES16=0x0, @ANYBLOB="e3ffffff00000000000003000000"], 0x14}}, 0x0) (async) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff400"/13], 0x20}}, 0x0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:13 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3397.124727] nbd: must specify a size in bytes for the device 00:45:13 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:13 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3397.183193] nbd: must specify at least one socket 00:45:13 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async, rerun: 64) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) (async, rerun: 64) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) (rerun: 64) 00:45:13 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r2 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:13 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x90, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x90}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3397.506862] nbd: must specify a size in bytes for the device 00:45:14 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xffffffffffffffc7}]}, 0x20}}, 0x0) 00:45:14 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:14 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 3: ioctl$LOOP_SET_CAPACITY(0xffffffffffffffff, 0x4c07) syz_open_dev$loop(&(0x7f0000000000), 0x401, 0x3a1000) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x404c000) 00:45:14 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:14 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 3: ioctl$LOOP_SET_CAPACITY(0xffffffffffffffff, 0x4c07) (async) syz_open_dev$loop(&(0x7f0000000000), 0x401, 0x3a1000) (async) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x404c000) 00:45:14 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:14 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: ioctl$LOOP_SET_CAPACITY(0xffffffffffffffff, 0x4c07) syz_open_dev$loop(&(0x7f0000000000), 0x401, 0x3a1000) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x404c000) ioctl$LOOP_SET_CAPACITY(0xffffffffffffffff, 0x4c07) (async) syz_open_dev$loop(&(0x7f0000000000), 0x401, 0x3a1000) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r0, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x404c000) (async) 00:45:15 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:15 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x68, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x68}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x68, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x68}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) (async) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x68, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x68}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r1, 0xc33a4a742314f40f, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x20}}, 0x0) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040), 0xb, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB="71aa9d03002cf8ebec2de56c60630905bbadaa38d4ecb9be0766bf31c9d8ee8a8a51b344e840b6a0aa4b0871b800040000c6494eecb5b514b15728000000000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000c0006000200000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x1}, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) setsockopt$MRT6_INIT(r3, 0x29, 0xc8, &(0x7f0000000180), 0x4) syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r2) 00:45:15 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:15 executing program 5: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:15 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040), 0xb, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB="71aa9d03002cf8ebec2de56c60630905bbadaa38d4ecb9be0766bf31c9d8ee8a8a51b344e840b6a0aa4b0871b800040000c6494eecb5b514b15728000000000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000c0006000200000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x1}, 0x0) (async) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) setsockopt$MRT6_INIT(r3, 0x29, 0xc8, &(0x7f0000000180), 0x4) (async) syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r2) 00:45:15 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x64, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x64}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040), 0xb, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB="71aa9d03002cf8ebec2de56c60630905bbadaa38d4ecb9be0766bf31c9d8ee8a8a51b344e840b6a0aa4b0871b800040000c6494eecb5b514b15728000000000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000c0006000200000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x1}, 0x0) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) setsockopt$MRT6_INIT(r3, 0x29, 0xc8, &(0x7f0000000180), 0x4) syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={&(0x7f0000000040), 0xb, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB="71aa9d03002cf8ebec2de56c60630905bbadaa38d4ecb9be0766bf31c9d8ee8a8a51b344e840b6a0aa4b0871b800040000c6494eecb5b514b15728000000000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000000c0006000200000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x1}, 0x0) (async) syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) (async) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) (async) setsockopt$MRT6_INIT(r3, 0x29, 0xc8, &(0x7f0000000180), 0x4) (async) syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r2) (async) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x64, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x64}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="165448d069f220000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000a9c7ff0600000000e0631e8285"], 0x20}, 0x1, 0x0, 0x0, 0x41}, 0x4008000) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="165448d069f220000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000a9c7ff0600000000e0631e8285"], 0x20}, 0x1, 0x0, 0x0, 0x41}, 0x4008000) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="165448d069f220000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000a9c7ff0600000000e0631e8285"], 0x20}, 0x1, 0x0, 0x0, 0x41}, 0x4008000) (async) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x64, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x64}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="165448d069f220000000", @ANYRES16=r1, @ANYBLOB="0ff40000000000000000010000a9c7ff0600000000e0631e8285"], 0x20}, 0x1, 0x0, 0x0, 0x41}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff064d8f537f00000000000000174e11c22413591b3d72e56cd4b531baeddfbc51bef43cde35ec4db31af147c743a2ad6e066e47b644b7dde7b47d1c8e969c37900689376e57adf106c88362d2d5adc405d2301445d5e015413aac8e3a0705c9ab224da268afb5edc07ebebc4c7a6f83fbc53a2a296ef04f7827f4e8fc1da8f1042d19aa4e79666686ac7df62adaaedb4e5279fc48ebf41e"], 0x20}}, 0x0) 00:45:16 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:16 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.160235] nbd: must specify at least one socket 00:45:16 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff064d8f537f00000000000000174e11c22413591b3d72e56cd4b531baeddfbc51bef43cde35ec4db31af147c743a2ad6e066e47b644b7dde7b47d1c8e969c37900689376e57adf106c88362d2d5adc405d2301445d5e015413aac8e3a0705c9ab224da268afb5edc07ebebc4c7a6f83fbc53a2a296ef04f7827f4e8fc1da8f1042d19aa4e79666686ac7df62adaaedb4e5279fc48ebf41e"], 0x20}}, 0x0) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:16 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff064d8f537f00000000000000174e11c22413591b3d72e56cd4b531baeddfbc51bef43cde35ec4db31af147c743a2ad6e066e47b644b7dde7b47d1c8e969c37900689376e57adf106c88362d2d5adc405d2301445d5e015413aac8e3a0705c9ab224da268afb5edc07ebebc4c7a6f83fbc53a2a296ef04f7827f4e8fc1da8f1042d19aa4e79666686ac7df62adaaedb4e5279fc48ebf41e"], 0x20}}, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000040), 0xc, &(0x7f00000000c0)={&(0x7f0000000140)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0ff4000000000000000001000000c7ff064d8f537f00000000000000174e11c22413591b3d72e56cd4b531baeddfbc51bef43cde35ec4db31af147c743a2ad6e066e47b644b7dde7b47d1c8e969c37900689376e57adf106c88362d2d5adc405d2301445d5e015413aac8e3a0705c9ab224da268afb5edc07ebebc4c7a6f83fbc53a2a296ef04f7827f4e8fc1da8f1042d19aa4e79666686ac7df62adaaedb4e5279fc48ebf41e"], 0x20}}, 0x0) (async) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) [ 3400.377117] nbd: must specify at least one socket 00:45:17 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) [ 3400.450982] nla_parse: 138 callbacks suppressed [ 3400.450991] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3400.466939] nbd: must specify at least one socket 00:45:17 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.505925] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. 00:45:17 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:17 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.576453] nbd: must specify a size in bytes for the device [ 3400.637952] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3400.655455] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:17 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:17 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.728959] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.804266] nbd: must specify a size in bytes for the device [ 3400.826917] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:17 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.858542] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:17 executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) [ 3400.934669] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. 00:45:17 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:17 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3400.988300] nbd: must specify a size in bytes for the device 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3401.047790] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. [ 3401.085325] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. 00:45:17 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:17 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:17 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:17 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:18 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x78}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:18 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x70, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x70}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3402.187934] nbd: must specify a size in bytes for the device 00:45:18 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:18 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x6c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x0) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) 00:45:19 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:19 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(0x0, r0) 00:45:20 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(0x0, r0) 00:45:20 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(0x0, r0) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:20 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x54, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x54}}, 0x0) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r3, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) 00:45:20 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_open_dev$vcsn(&(0x7f0000000100), 0xe94, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000600)={r4, 0x0, 0x0}, 0x10) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x84, r3, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x84}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) syz_genetlink_get_family_id$nbd(0x0, r0) 00:45:20 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:20 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:21 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3405.532456] nla_parse: 136 callbacks suppressed [ 3405.532465] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. [ 3405.554164] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. [ 3405.566945] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:22 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3405.624272] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:22 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3405.719880] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. [ 3405.757784] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. 00:45:22 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3405.832322] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. [ 3405.862015] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3405.948485] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. [ 3405.979184] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:22 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:22 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(0x0, r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r1, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:23 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:23 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:23 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r1, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x50}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x50}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}]}, 0x50}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:24 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={0x0}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x74, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x74}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x50}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, 0x0, 0x1, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x7c, 0x0, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}]}, 0x7c}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 4: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040), 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)={0x88, r2, 0x0, 0x0, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x88}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) 00:45:25 executing program 5: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x80, r2, 0x1, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x80}, 0x1, 0x0, 0x0, 0x4c041}, 0x4008000) [ 3408.934564] ================================================================== [ 3408.942239] BUG: KASAN: use-after-free in refcount_dec_not_one+0x71/0x1d0 [ 3408.949174] Read of size 4 at addr ffff8880aaea9698 by task systemd-udevd/9737 [ 3408.956529] [ 3408.958164] CPU: 1 PID: 9737 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 [ 3408.965859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 3408.975205] Call Trace: [ 3408.977790] dump_stack+0x1fc/0x2ef [ 3408.981404] print_address_description.cold+0x54/0x219 [ 3408.986686] kasan_report_error.cold+0x8a/0x1b9 [ 3408.991353] ? refcount_dec_not_one+0x71/0x1d0 [ 3408.995924] kasan_report+0x8f/0xa0 [ 3408.999563] ? refcount_dec_not_one+0x71/0x1d0 [ 3409.004146] refcount_dec_not_one+0x71/0x1d0 [ 3409.008554] ? refcount_dec_and_test_checked+0x20/0x20 [ 3409.013854] ? nbd_config_put+0x5da/0x870 [ 3409.018010] refcount_dec_and_mutex_lock+0x1c/0x80 [ 3409.022947] nbd_release+0x108/0x170 [ 3409.026655] ? nbd_queue_rq+0xe60/0xe60 [ 3409.030623] __blkdev_put+0x636/0x870 [ 3409.034434] ? fsync_bdev+0xc0/0xc0 [ 3409.038055] ? locks_remove_file+0x2cd/0x450 [ 3409.042458] ? blkdev_put+0x85/0x520 [ 3409.046161] ? blkdev_put+0x520/0x520 [ 3409.049945] blkdev_close+0x86/0xb0 [ 3409.053568] __fput+0x2ce/0x890 [ 3409.056855] task_work_run+0x148/0x1c0 [ 3409.060745] exit_to_usermode_loop+0x251/0x2a0 [ 3409.065312] do_syscall_64+0x538/0x620 [ 3409.069188] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3409.074369] RIP: 0033:0x7fb8c92bb270 [ 3409.078080] Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 [ 3409.096981] RSP: 002b:00007ffc478b96e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 3409.104688] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fb8c92bb270 [ 3409.111953] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 3409.119214] RBP: 00007fb8ca175710 R08: 0000000000000045 R09: 0000000000000018 [ 3409.126473] R10: 00005579d60f58f8 R11: 0000000000000246 R12: 0000000000000000 [ 3409.133742] R13: 00005579d60fd590 R14: 0000000000000003 R15: 000000000000000e [ 3409.141008] [ 3409.142619] Allocated by task 9735: [ 3409.146241] kmem_cache_alloc_trace+0x12f/0x380 [ 3409.150902] nbd_dev_add+0x44/0x890 [ 3409.154520] nbd_genl_connect+0x4cc/0x1630 [ 3409.158745] genl_family_rcv_msg+0x642/0xc40 [ 3409.163135] genl_rcv_msg+0xbf/0x160 [ 3409.166832] netlink_rcv_skb+0x160/0x440 [ 3409.170882] genl_rcv+0x24/0x40 [ 3409.174150] netlink_unicast+0x4d5/0x690 [ 3409.178199] netlink_sendmsg+0x6c3/0xc50 [ 3409.182244] sock_sendmsg+0xc3/0x120 [ 3409.185949] ___sys_sendmsg+0x7bb/0x8e0 [ 3409.189917] __x64_sys_sendmsg+0x132/0x220 [ 3409.194146] do_syscall_64+0xf9/0x620 [ 3409.197949] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3409.203126] [ 3409.204743] Freed by task 9737: [ 3409.208004] kfree+0xcc/0x210 [ 3409.211100] nbd_put.part.0+0xfe/0x140 [ 3409.214977] nbd_config_put+0x6a0/0x870 [ 3409.218942] nbd_release+0xf4/0x170 [ 3409.222556] __blkdev_put+0x636/0x870 [ 3409.226346] blkdev_close+0x86/0xb0 [ 3409.229965] __fput+0x2ce/0x890 [ 3409.233243] task_work_run+0x148/0x1c0 [ 3409.237137] exit_to_usermode_loop+0x251/0x2a0 [ 3409.241708] do_syscall_64+0x538/0x620 [ 3409.245587] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3409.250760] [ 3409.252374] The buggy address belongs to the object at ffff8880aaea95c0 [ 3409.252374] which belongs to the cache kmalloc-512 of size 512 [ 3409.265027] The buggy address is located 216 bytes inside of [ 3409.265027] 512-byte region [ffff8880aaea95c0, ffff8880aaea97c0) [ 3409.276890] The buggy address belongs to the page: [ 3409.281816] page:ffffea0002abaa40 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 [ 3409.289951] flags: 0xfff00000000100(slab) [ 3409.294104] raw: 00fff00000000100 ffffea00027eb608 ffffea0001f80688 ffff88813bff0940 [ 3409.301992] raw: 0000000000000000 ffff8880aaea90c0 0000000100000006 0000000000000000 [ 3409.309859] page dumped because: kasan: bad access detected [ 3409.315550] [ 3409.317175] Memory state around the buggy address: [ 3409.322100] ffff8880aaea9580: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 3409.329440] ffff8880aaea9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 3409.336787] >ffff8880aaea9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 3409.344134] ^ [ 3409.348266] ffff8880aaea9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 3409.355618] ffff8880aaea9780: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 3409.362973] ================================================================== [ 3409.370318] Disabling lock debugging due to kernel taint [ 3409.382015] Kernel panic - not syncing: panic_on_warn set ... [ 3409.382015] [ 3409.389417] CPU: 0 PID: 9737 Comm: systemd-udevd Tainted: G B 4.19.211-syzkaller #0 [ 3409.398517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 3409.407867] Call Trace: [ 3409.410449] dump_stack+0x1fc/0x2ef [ 3409.414064] panic+0x26a/0x50e [ 3409.417240] ? __warn_printk+0xf3/0xf3 [ 3409.421108] ? preempt_schedule_common+0x45/0xc0 [ 3409.425846] ? ___preempt_schedule+0x16/0x18 [ 3409.430238] ? trace_hardirqs_on+0x55/0x210 [ 3409.434546] kasan_end_report+0x43/0x49 [ 3409.438506] kasan_report_error.cold+0xa7/0x1b9 [ 3409.443164] ? refcount_dec_not_one+0x71/0x1d0 [ 3409.447725] kasan_report+0x8f/0xa0 [ 3409.451336] ? refcount_dec_not_one+0x71/0x1d0 [ 3409.455898] refcount_dec_not_one+0x71/0x1d0 [ 3409.460292] ? refcount_dec_and_test_checked+0x20/0x20 [ 3409.465558] ? nbd_config_put+0x5da/0x870 [ 3409.469689] refcount_dec_and_mutex_lock+0x1c/0x80 [ 3409.474598] nbd_release+0x108/0x170 [ 3409.478292] ? nbd_queue_rq+0xe60/0xe60 [ 3409.482245] __blkdev_put+0x636/0x870 [ 3409.486025] ? fsync_bdev+0xc0/0xc0 [ 3409.489631] ? locks_remove_file+0x2cd/0x450 [ 3409.494023] ? blkdev_put+0x85/0x520 [ 3409.497716] ? blkdev_put+0x520/0x520 [ 3409.501503] blkdev_close+0x86/0xb0 [ 3409.505117] __fput+0x2ce/0x890 [ 3409.508386] task_work_run+0x148/0x1c0 [ 3409.512255] exit_to_usermode_loop+0x251/0x2a0 [ 3409.516818] do_syscall_64+0x538/0x620 [ 3409.520686] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3409.525862] RIP: 0033:0x7fb8c92bb270 [ 3409.529555] Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 [ 3409.548435] RSP: 002b:00007ffc478b96e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 3409.556120] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fb8c92bb270 [ 3409.563371] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 3409.570621] RBP: 00007fb8ca175710 R08: 0000000000000045 R09: 0000000000000018 [ 3409.578216] R10: 00005579d60f58f8 R11: 0000000000000246 R12: 0000000000000000 [ 3409.585468] R13: 00005579d60fd590 R14: 0000000000000003 R15: 000000000000000e [ 3409.592905] Kernel Offset: disabled [ 3409.596518] Rebooting in 86400 seconds..