Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git

11 files changed, 702 insertions, 97 deletions

diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index f4d3e1e2abe2..43ca3aff2292 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -523,10 +523,17 @@ static __always_inline typeof(name(0)) ____##name(struct pt_regs *ctx, ##args)
  * Original struct pt_regs * context is preserved as 'ctx' argument. This might
  * be necessary when using BPF helpers like bpf_perf_event_output().
  *
- * At the moment BPF_KSYSCALL does not handle all the calling convention
- * quirks for mmap(), clone() and compat syscalls transparrently. This may or
- * may not change in the future. User needs to take extra measures to handle
- * such quirks explicitly, if necessary.
+ * At the moment BPF_KSYSCALL does not transparently handle all the calling
+ * convention quirks for the following syscalls:
+ *
+ * - mmap(): __ARCH_WANT_SYS_OLD_MMAP.
+ * - clone(): CONFIG_CLONE_BACKWARDS, CONFIG_CLONE_BACKWARDS2 and
+ *            CONFIG_CLONE_BACKWARDS3.
+ * - socket-related syscalls: __ARCH_WANT_SYS_SOCKETCALL.
+ * - compat syscalls.
+ *
+ * This may or may not change in the future. User needs to take extra measures
+ * to handle such quirks explicitly, if necessary.
  *
  * This macro relies on BPF CO-RE support and virtual __kconfig externs.
  */
diff --git a/tools/testing/selftests/bpf/DENYLIST b/tools/testing/selftests/bpf/DENYLIST
new file mode 100644
index 000000000000..939de574fc7f
--- /dev/null
+++ b/tools/testing/selftests/bpf/DENYLIST
@@ -0,0 +1,6 @@
+# TEMPORARY
+get_stack_raw_tp    # spams with kernel warnings until next bpf -> bpf-next merge
+stacktrace_build_id_nmi
+stacktrace_build_id
+task_fd_query_rawtp
+varlen
diff --git a/tools/testing/selftests/bpf/DENYLIST.s390x b/tools/testing/selftests/bpf/DENYLIST.s390x
new file mode 100644
index 000000000000..e33cab34d22f
--- /dev/null
+++ b/tools/testing/selftests/bpf/DENYLIST.s390x
@@ -0,0 +1,67 @@
+# TEMPORARY
+atomics                                  # attach(add): actual -524 <= expected 0                                      (trampoline)
+bpf_iter_setsockopt                      # JIT does not support calling kernel function                                (kfunc)
+bloom_filter_map                         # failed to find kernel BTF type ID of '__x64_sys_getpgid': -3                (?)
+bpf_tcp_ca                               # JIT does not support calling kernel function                                (kfunc)
+bpf_loop                                 # attaches to __x64_sys_nanosleep
+bpf_mod_race                             # BPF trampoline
+bpf_nf                                   # JIT does not support calling kernel function
+core_read_macros                         # unknown func bpf_probe_read#4                                               (overlapping)
+d_path                                   # failed to auto-attach program 'prog_stat': -524                             (trampoline)
+dummy_st_ops                             # test_run unexpected error: -524 (errno 524)                                 (trampoline)
+fentry_fexit                             # fentry attach failed: -524                                                  (trampoline)
+fentry_test                              # fentry_first_attach unexpected error: -524                                  (trampoline)
+fexit_bpf2bpf                            # freplace_attach_trace unexpected error: -524                                (trampoline)
+fexit_sleep                              # fexit_skel_load fexit skeleton failed                                       (trampoline)
+fexit_stress                             # fexit attach failed prog 0 failed: -524                                     (trampoline)
+fexit_test                               # fexit_first_attach unexpected error: -524                                   (trampoline)
+get_func_args_test	                 # trampoline
+get_func_ip_test                         # get_func_ip_test__attach unexpected error: -524                             (trampoline)
+get_stack_raw_tp                         # user_stack corrupted user stack                                             (no backchain userspace)
+kfree_skb                                # attach fentry unexpected error: -524                                        (trampoline)
+kfunc_call                               # 'bpf_prog_active': not found in kernel BTF                                  (?)
+ksyms_module                             # test_ksyms_module__open_and_load unexpected error: -9                       (?)
+ksyms_module_libbpf                      # JIT does not support calling kernel function                                (kfunc)
+ksyms_module_lskel                       # test_ksyms_module_lskel__open_and_load unexpected error: -9                 (?)
+modify_return                            # modify_return attach failed: -524                                           (trampoline)
+module_attach                            # skel_attach skeleton attach failed: -524                                    (trampoline)
+mptcp
+kprobe_multi_test                        # relies on fentry
+netcnt                                   # failed to load BPF skeleton 'netcnt_prog': -7                               (?)
+probe_user                               # check_kprobe_res wrong kprobe res from probe read                           (?)
+recursion                                # skel_attach unexpected error: -524                                          (trampoline)
+ringbuf                                  # skel_load skeleton load failed                                              (?)
+sk_assign                                # Can't read on server: Invalid argument                                      (?)
+sk_lookup                                # endianness problem
+sk_storage_tracing                       # test_sk_storage_tracing__attach unexpected error: -524                      (trampoline)
+skc_to_unix_sock                         # could not attach BPF object unexpected error: -524                          (trampoline)
+socket_cookie                            # prog_attach unexpected error: -524                                          (trampoline)
+stacktrace_build_id                      # compare_map_keys stackid_hmap vs. stackmap err -2 errno 2                   (?)
+tailcalls                                # tail_calls are not allowed in non-JITed programs with bpf-to-bpf calls      (?)
+task_local_storage                       # failed to auto-attach program 'trace_exit_creds': -524                      (trampoline)
+test_bpffs                               # bpffs test  failed 255                                                      (iterator)
+test_bprm_opts                           # failed to auto-attach program 'secure_exec': -524                           (trampoline)
+test_ima                                 # failed to auto-attach program 'ima': -524                                   (trampoline)
+test_local_storage                       # failed to auto-attach program 'unlink_hook': -524                           (trampoline)
+test_lsm                                 # failed to find kernel BTF type ID of '__x64_sys_setdomainname': -3          (?)
+test_overhead                            # attach_fentry unexpected error: -524                                        (trampoline)
+test_profiler                            # unknown func bpf_probe_read_str#45                                          (overlapping)
+timer                                    # failed to auto-attach program 'test1': -524                                 (trampoline)
+timer_crash                              # trampoline
+timer_mim                                # failed to auto-attach program 'test1': -524                                 (trampoline)
+trace_ext                                # failed to auto-attach program 'test_pkt_md_access_new': -524                (trampoline)
+trace_printk                             # trace_printk__load unexpected error: -2 (errno 2)                           (?)
+trace_vprintk                            # trace_vprintk__open_and_load unexpected error: -9                           (?)
+trampoline_count                         # prog 'prog1': failed to attach: ERROR: strerror_r(-524)=22                  (trampoline)
+verif_stats                              # trace_vprintk__open_and_load unexpected error: -9                           (?)
+vmlinux                                  # failed to auto-attach program 'handle__fentry': -524                        (trampoline)
+xdp_adjust_tail                          # case-128 err 0 errno 28 retval 1 size 128 expect-size 3520                  (?)
+xdp_bonding                              # failed to auto-attach program 'trace_on_entry': -524                        (trampoline)
+xdp_bpf2bpf                              # failed to auto-attach program 'trace_on_entry': -524                        (trampoline)
+map_kptr                                 # failed to open_and_load program: -524 (trampoline)
+bpf_cookie                               # failed to open_and_load program: -524 (trampoline)
+xdp_do_redirect                          # prog_run_max_size unexpected error: -22 (errno 22)
+send_signal                              # intermittently fails to receive signal
+select_reuseport                         # intermittently fails on new s390x setup
+xdp_synproxy                             # JIT does not support calling kernel function                                (kfunc)
+unpriv_bpf_disabled                      # fentry
diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config
index c05904d631ec..fabf0c014349 100644
--- a/tools/testing/selftests/bpf/config
+++ b/tools/testing/selftests/bpf/config
@@ -1,65 +1,64 @@
+CONFIG_BLK_DEV_LOOP=y
 CONFIG_BPF=y
-CONFIG_BPF_SYSCALL=y
-CONFIG_NET_CLS_BPF=m
 CONFIG_BPF_EVENTS=y
-CONFIG_TEST_BPF=m
+CONFIG_BPF_JIT=y
+CONFIG_BPF_LIRC_MODE2=y
+CONFIG_BPF_LSM=y
+CONFIG_BPF_STREAM_PARSER=y
+CONFIG_BPF_SYSCALL=y
 CONFIG_CGROUP_BPF=y
-CONFIG_NETDEVSIM=m
-CONFIG_NET_CLS_ACT=y
-CONFIG_NET_SCHED=y
-CONFIG_NET_SCH_INGRESS=y
-CONFIG_NET_IPIP=y
-CONFIG_IPV6=y
-CONFIG_NET_IPGRE_DEMUX=y
-CONFIG_NET_IPGRE=y
-CONFIG_IPV6_GRE=y
-CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_HMAC=m
 CONFIG_CRYPTO_SHA256=m
-CONFIG_VXLAN=y
-CONFIG_GENEVE=y
-CONFIG_NET_CLS_FLOWER=m
-CONFIG_LWTUNNEL=y
-CONFIG_BPF_STREAM_PARSER=y
-CONFIG_XDP_SOCKETS=y
+CONFIG_CRYPTO_USER_API_HASH=m
+CONFIG_DYNAMIC_FTRACE=y
+CONFIG_FPROBE=y
 CONFIG_FTRACE_SYSCALLS=y
-CONFIG_IPV6_TUNNEL=y
+CONFIG_FUNCTION_TRACER=y
+CONFIG_GENEVE=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_IMA=y
+CONFIG_IMA_READ_POLICY=y
+CONFIG_IMA_WRITE_POLICY=y
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_RAW=y
+CONFIG_IP_NF_TARGET_SYNPROXY=y
+CONFIG_IPV6=y
+CONFIG_IPV6_FOU=m
+CONFIG_IPV6_FOU_TUNNEL=m
 CONFIG_IPV6_GRE=y
 CONFIG_IPV6_SEG6_BPF=y
+CONFIG_IPV6_SIT=m
+CONFIG_IPV6_TUNNEL=y
+CONFIG_LIRC=y
+CONFIG_LWTUNNEL=y
+CONFIG_MPLS=y
+CONFIG_MPLS_IPTUNNEL=m
+CONFIG_MPLS_ROUTING=m
+CONFIG_MPTCP=y
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_CLS_BPF=y
+CONFIG_NET_CLS_FLOWER=m
 CONFIG_NET_FOU=m
 CONFIG_NET_FOU_IP_TUNNELS=y
-CONFIG_IPV6_FOU=m
-CONFIG_IPV6_FOU_TUNNEL=m
-CONFIG_MPLS=y
+CONFIG_NET_IPGRE=y
+CONFIG_NET_IPGRE_DEMUX=y
+CONFIG_NET_IPIP=y
 CONFIG_NET_MPLS_GSO=m
-CONFIG_MPLS_ROUTING=m
-CONFIG_MPLS_IPTUNNEL=m
-CONFIG_IPV6_SIT=m
-CONFIG_BPF_JIT=y
-CONFIG_BPF_LSM=y
-CONFIG_SECURITY=y
-CONFIG_RC_CORE=y
-CONFIG_LIRC=y
-CONFIG_BPF_LIRC_MODE2=y
-CONFIG_IMA=y
-CONFIG_SECURITYFS=y
-CONFIG_IMA_WRITE_POLICY=y
-CONFIG_IMA_READ_POLICY=y
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_FUNCTION_TRACER=y
-CONFIG_DYNAMIC_FTRACE=y
+CONFIG_NET_SCH_INGRESS=y
+CONFIG_NET_SCHED=y
+CONFIG_NETDEVSIM=m
 CONFIG_NETFILTER=y
+CONFIG_NETFILTER_SYNPROXY=y
+CONFIG_NETFILTER_XT_MATCH_STATE=y
+CONFIG_NETFILTER_XT_TARGET_CT=y
+CONFIG_NF_CONNTRACK=y
 CONFIG_NF_DEFRAG_IPV4=y
 CONFIG_NF_DEFRAG_IPV6=y
-CONFIG_NF_CONNTRACK=y
+CONFIG_RC_CORE=y
+CONFIG_SECURITY=y
+CONFIG_SECURITYFS=y
+CONFIG_TEST_BPF=m
 CONFIG_USERFAULTFD=y
-CONFIG_FPROBE=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_MPTCP=y
-CONFIG_NETFILTER_SYNPROXY=y
-CONFIG_NETFILTER_XT_TARGET_CT=y
-CONFIG_NETFILTER_XT_MATCH_STATE=y
-CONFIG_IP_NF_FILTER=y
-CONFIG_IP_NF_TARGET_SYNPROXY=y
-CONFIG_IP_NF_RAW=y
+CONFIG_VXLAN=y
+CONFIG_XDP_SOCKETS=y
diff --git a/tools/testing/selftests/bpf/config.s390x b/tools/testing/selftests/bpf/config.s390x
new file mode 100644
index 000000000000..f8a7a258a718
--- /dev/null
+++ b/tools/testing/selftests/bpf/config.s390x
@@ -0,0 +1,147 @@
+CONFIG_9P_FS=y
+CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
+CONFIG_AUDIT=y
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BONDING=y
+CONFIG_BPF_JIT_ALWAYS_ON=y
+CONFIG_BPF_JIT_DEFAULT_ON=y
+CONFIG_BPF_PRELOAD=y
+CONFIG_BPF_PRELOAD_UMD=y
+CONFIG_BPFILTER=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_HUGETLB=y
+CONFIG_CGROUP_NET_CLASSID=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUPS=y
+CONFIG_CHECKPOINT_RESTORE=y
+CONFIG_CPUSETS=y
+CONFIG_CRASH_DUMP=y
+CONFIG_CRYPTO_USER_API_RNG=y
+CONFIG_CRYPTO_USER_API_SKCIPHER=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_INFO_BTF=y
+CONFIG_DEBUG_INFO_DWARF4=y
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_LOCKDEP=y
+CONFIG_DEBUG_NOTIFIERS=y
+CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_SECTION_MISMATCH=y
+CONFIG_DEBUG_SG=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEVTMPFS=y
+CONFIG_EXPERT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FANOTIFY=y
+CONFIG_FUNCTION_PROFILER=y
+CONFIG_GDB_SCRIPTS=y
+CONFIG_HAVE_EBPF_JIT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KPROBES_ON_FTRACE=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_MARCH_Z10_FEATURES=y
+CONFIG_HAVE_MARCH_Z196_FEATURES=y
+CONFIG_HEADERS_INSTALL=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_HUGETLBFS=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ_100=y
+CONFIG_IDLE_PAGE_TRACKING=y
+CONFIG_IKHEADERS=y
+CONFIG_INET6_ESP=y
+CONFIG_INET=y
+CONFIG_INET_ESP=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IPV6_SEG6_LWTUNNEL=y
+CONFIG_IPVLAN=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KERNEL_UNCOMPRESSED=y
+CONFIG_KPROBES=y
+CONFIG_KPROBES_ON_FTRACE=y
+CONFIG_KRETPROBES=y
+CONFIG_KSM=y
+CONFIG_LATENCYTOP=y
+CONFIG_LIVEPATCH=y
+CONFIG_LOCK_STAT=y
+CONFIG_MACVLAN=y
+CONFIG_MACVTAP=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MARCH_Z196=y
+CONFIG_MARCH_Z196_TUNE=y
+CONFIG_MEMCG=y
+CONFIG_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTREMOVE=y
+CONFIG_MODULE_SIG=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULES=y
+CONFIG_NAMESPACES=y
+CONFIG_NET=y
+CONFIG_NET_9P=y
+CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_ACT_BPF=y
+CONFIG_NET_ACT_GACT=y
+CONFIG_NET_KEY=y
+CONFIG_NET_SCH_FQ=y
+CONFIG_NET_VRF=y
+CONFIG_NETDEVICES=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_TARGET_MARK=y
+CONFIG_NF_TABLES=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=256
+CONFIG_NUMA=y
+CONFIG_PACKET=y
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_PCI=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROFILING=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_PTDUMP_DEBUGFS=y
+CONFIG_RC_DEVICES=y
+CONFIG_RC_LOOPBACK=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_SAMPLE_SECCOMP=y
+CONFIG_SAMPLES=y
+CONFIG_SCHED_TRACER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_STACK_TRACER=y
+CONFIG_STATIC_KEYS_SELFTEST=y
+CONFIG_SYSVIPC=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASKSTATS=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_CONG_DCTCP=y
+CONFIG_TLS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TUN=y
+CONFIG_UNIX=y
+CONFIG_UPROBES=y
+CONFIG_USELIB=y
+CONFIG_USER_NS=y
+CONFIG_VETH=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VLAN_8021Q=y
+CONFIG_XFRM_USER=y
diff --git a/tools/testing/selftests/bpf/config.x86_64 b/tools/testing/selftests/bpf/config.x86_64
new file mode 100644
index 000000000000..f0859a1d37ab
--- /dev/null
+++ b/tools/testing/selftests/bpf/config.x86_64
@@ -0,0 +1,251 @@
+CONFIG_9P_FS=y
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_9P_FS_SECURITY=y
+CONFIG_AGP=y
+CONFIG_AGP_AMD64=y
+CONFIG_AGP_INTEL=y
+CONFIG_AGP_SIS=y
+CONFIG_AGP_VIA=y
+CONFIG_AMIGA_PARTITION=y
+CONFIG_AUDIT=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BINFMT_MISC=y
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_CGROUP_IOLATENCY=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=16384
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_BONDING=y
+CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
+CONFIG_BOOTTIME_TRACING=y
+CONFIG_BPF_JIT_ALWAYS_ON=y
+CONFIG_BPF_KPROBE_OVERRIDE=y
+CONFIG_BPF_PRELOAD=y
+CONFIG_BPF_PRELOAD_UMD=y
+CONFIG_BPFILTER=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_HUGETLB=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUPS=y
+CONFIG_CMA=y
+CONFIG_CMA_AREAS=7
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPUSETS=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_BLAKE2B=y
+CONFIG_CRYPTO_DEV_VIRTIO=m
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_XXHASH=y
+CONFIG_DCB=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_CREDENTIALS=y
+CONFIG_DEBUG_INFO_BTF=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEFAULT_FQ_CODEL=y
+CONFIG_DEFAULT_RENO=y
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMA_CMA=y
+CONFIG_DNS_RESOLVER=y
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y
+CONFIG_EXPERT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FAIL_FUNCTION=y
+CONFIG_FAULT_INJECTION=y
+CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FB=y
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_TILEBLITTING=y
+CONFIG_FB_VESA=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_MINI_4x6=y
+CONFIG_FONTS=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_GART_IOMMU=y
+CONFIG_GENERIC_PHY=y
+CONFIG_HARDLOCKUP_DETECTOR=y
+CONFIG_HID_A4TECH=y
+CONFIG_HID_BELKIN=y
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CYPRESS=y
+CONFIG_HID_DRAGONRISE=y
+CONFIG_HID_EZKEY=y
+CONFIG_HID_GREENASIA=y
+CONFIG_HID_GYRATION=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_KYE=y
+CONFIG_HID_MICROSOFT=y
+CONFIG_HID_MONTEREY=y
+CONFIG_HID_PANTHERLORD=y
+CONFIG_HID_PETALYNX=y
+CONFIG_HID_SMARTJOYPLUS=y
+CONFIG_HID_SUNPLUS=y
+CONFIG_HID_TOPSEED=y
+CONFIG_HID_TWINHAN=y
+CONFIG_HID_ZEROPLUS=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_HPET=y
+CONFIG_HUGETLBFS=y
+CONFIG_HWPOISON_INJECT=y
+CONFIG_HZ_1000=y
+CONFIG_INET=y
+CONFIG_INPUT_EVDEV=y
+CONFIG_INTEL_POWERCLAMP=y
+CONFIG_IP6_NF_IPTABLES=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IPV6_MIP6=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_SEG6_LWTUNNEL=y
+CONFIG_IPV6_SUBTREES=y
+CONFIG_IRQ_POLL=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_KEXEC=y
+CONFIG_KPROBES=y
+CONFIG_KSM=y
+CONFIG_LEGACY_VSYSCALL_NONE=y
+CONFIG_LOG_BUF_SHIFT=21
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=0
+CONFIG_LOGO=y
+CONFIG_LSM="selinux,bpf,integrity"
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MCORE2=y
+CONFIG_MEMCG=y
+CONFIG_MEMORY_FAILURE=y
+CONFIG_MINIX_SUBPARTITION=y
+CONFIG_MODULE_SIG=y
+CONFIG_MODULE_SRCVERSION_ALL=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULES=y
+CONFIG_MODVERSIONS=y
+CONFIG_NAMESPACES=y
+CONFIG_NET=y
+CONFIG_NET_9P=y
+CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_ACT_BPF=y
+CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_EMATCH=y
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_NET_L3_MASTER_DEV=y
+CONFIG_NET_SCH_DEFAULT=y
+CONFIG_NET_SCH_FQ_CODEL=y
+CONFIG_NET_TC_SKB_EXT=y
+CONFIG_NET_VRF=y
+CONFIG_NETDEVICES=y
+CONFIG_NETFILTER_NETLINK_LOG=y
+CONFIG_NETFILTER_NETLINK_QUEUE=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
+CONFIG_NETLABEL=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NO_HZ=y
+CONFIG_NR_CPUS=128
+CONFIG_NUMA=y
+CONFIG_NUMA_BALANCING=y
+CONFIG_NVMEM=y
+CONFIG_OSF_PARTITION=y
+CONFIG_PACKET=y
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_PCI=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_MSI=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PHYSICAL_ALIGN=0x1000000
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PREEMPT=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROFILING=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_RC_DEVICES=y
+CONFIG_RC_LOOPBACK=y
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_SCHEDSTATS=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_DETECT_IRQ=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_NR_UARTS=32
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SGI_PARTITION=y
+CONFIG_SMP=y
+CONFIG_SOLARIS_X86_PARTITION=y
+CONFIG_SUN_PARTITION=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSVIPC=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASKSTATS=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_MD5SIG=y
+CONFIG_TLS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+CONFIG_TUN=y
+CONFIG_UNIX=y
+CONFIG_UNIXWARE_DISKLABEL=y
+CONFIG_USER_NS=y
+CONFIG_VALIDATE_FS_PARSER=y
+CONFIG_VETH=y
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VLAN_8021Q=y
+CONFIG_X86_ACPI_CPUFREQ=y
+CONFIG_X86_CPUID=y
+CONFIG_X86_MSR=y
+CONFIG_X86_POWERNOW_K8=y
+CONFIG_XDP_SOCKETS_DIAG=y
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_USER=y
+CONFIG_ZEROPLUS_FF=y
diff --git a/tools/testing/selftests/bpf/prog_tests/probe_user.c b/tools/testing/selftests/bpf/prog_tests/probe_user.c
index abf890d066eb..34dbd2adc157 100644
--- a/tools/testing/selftests/bpf/prog_tests/probe_user.c
+++ b/tools/testing/selftests/bpf/prog_tests/probe_user.c
@@ -4,25 +4,35 @@
 /* TODO: corrupts other tests uses connect() */
 void serial_test_probe_user(void)
 {
-	const char *prog_name = "handle_sys_connect";
+	static const char *const prog_names[] = {
+		"handle_sys_connect",
+#if defined(__s390x__)
+		"handle_sys_socketcall",
+#endif
+	};
+	enum { prog_count = ARRAY_SIZE(prog_names) };
 	const char *obj_file = "./test_probe_user.o";
 	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, );
 	int err, results_map_fd, sock_fd, duration = 0;
 	struct sockaddr curr, orig, tmp;
 	struct sockaddr_in *in = (struct sockaddr_in *)&curr;
-	struct bpf_link *kprobe_link = NULL;
-	struct bpf_program *kprobe_prog;
+	struct bpf_link *kprobe_links[prog_count] = {};
+	struct bpf_program *kprobe_progs[prog_count];
 	struct bpf_object *obj;
 	static const int zero = 0;
+	size_t i;
 
 	obj = bpf_object__open_file(obj_file, &opts);
 	if (!ASSERT_OK_PTR(obj, "obj_open_file"))
 		return;
 
-	kprobe_prog = bpf_object__find_program_by_name(obj, prog_name);
-	if (CHECK(!kprobe_prog, "find_probe",
-		  "prog '%s' not found\n", prog_name))
-		goto cleanup;
+	for (i = 0; i < prog_count; i++) {
+		kprobe_progs[i] =
+			bpf_object__find_program_by_name(obj, prog_names[i]);
+		if (CHECK(!kprobe_progs[i], "find_probe",
+			  "prog '%s' not found\n", prog_names[i]))
+			goto cleanup;
+	}
 
 	err = bpf_object__load(obj);
 	if (CHECK(err, "obj_load", "err %d\n", err))
@@ -33,9 +43,11 @@ void serial_test_probe_user(void)
 		  "err %d\n", results_map_fd))
 		goto cleanup;
 
-	kprobe_link = bpf_program__attach(kprobe_prog);
-	if (!ASSERT_OK_PTR(kprobe_link, "attach_kprobe"))
-		goto cleanup;
+	for (i = 0; i < prog_count; i++) {
+		kprobe_links[i] = bpf_program__attach(kprobe_progs[i]);
+		if (!ASSERT_OK_PTR(kprobe_links[i], "attach_kprobe"))
+			goto cleanup;
+	}
 
 	memset(&curr, 0, sizeof(curr));
 	in->sin_family = AF_INET;
@@ -69,6 +81,7 @@ void serial_test_probe_user(void)
 		  inet_ntoa(in->sin_addr), ntohs(in->sin_port)))
 		goto cleanup;
 cleanup:
-	bpf_link__destroy(kprobe_link);
+	for (i = 0; i < prog_count; i++)
+		bpf_link__destroy(kprobe_links[i]);
 	bpf_object__close(obj);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
index 3bba4a2a0530..eea274110267 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
@@ -82,6 +82,7 @@
 
 #define MAC_TUNL_DEV0 "52:54:00:d9:01:00"
 #define MAC_TUNL_DEV1 "52:54:00:d9:02:00"
+#define MAC_VETH1 "52:54:00:d9:03:00"
 
 #define VXLAN_TUNL_DEV0 "vxlan00"
 #define VXLAN_TUNL_DEV1 "vxlan11"
@@ -108,10 +109,9 @@
 static int config_device(void)
 {
 	SYS("ip netns add at_ns0");
-	SYS("ip link add veth0 type veth peer name veth1");
+	SYS("ip link add veth0 address " MAC_VETH1 " type veth peer name veth1");
 	SYS("ip link set veth0 netns at_ns0");
 	SYS("ip addr add " IP4_ADDR1_VETH1 "/24 dev veth1");
-	SYS("ip addr add " IP4_ADDR2_VETH1 "/24 dev veth1");
 	SYS("ip link set dev veth1 up mtu 1500");
 	SYS("ip netns exec at_ns0 ip addr add " IP4_ADDR_VETH0 "/24 dev veth0");
 	SYS("ip netns exec at_ns0 ip link set dev veth0 up mtu 1500");
@@ -140,6 +140,8 @@ static int add_vxlan_tunnel(void)
 	    VXLAN_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
 	SYS("ip netns exec at_ns0 ip neigh add %s lladdr %s dev %s",
 	    IP4_ADDR_TUNL_DEV1, MAC_TUNL_DEV1, VXLAN_TUNL_DEV0);
+	SYS("ip netns exec at_ns0 ip neigh add %s lladdr %s dev veth0",
+	    IP4_ADDR2_VETH1, MAC_VETH1);
 
 	/* root namespace */
 	SYS("ip link add dev %s type vxlan external gbp dstport 4789",
@@ -277,6 +279,17 @@ static void test_vxlan_tunnel(void)
 	if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
 		goto done;
 
+	/* load and attach bpf prog to veth dev tc hook point */
+	ifindex = if_nametoindex("veth1");
+	if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
+		goto done;
+	tc_hook.ifindex = ifindex;
+	set_dst_prog_fd = bpf_program__fd(skel->progs.veth_set_outer_dst);
+	if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
+		goto done;
+	if (attach_tc_prog(&tc_hook, set_dst_prog_fd, -1))
+		goto done;
+
 	/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
 	nstoken = open_netns("at_ns0");
 	if (!ASSERT_OK_PTR(nstoken, "setns src"))
diff --git a/tools/testing/selftests/bpf/progs/test_probe_user.c b/tools/testing/selftests/bpf/progs/test_probe_user.c
index 8e1495008e4d..a8e501af9604 100644
--- a/tools/testing/selftests/bpf/progs/test_probe_user.c
+++ b/tools/testing/selftests/bpf/progs/test_probe_user.c
@@ -7,8 +7,7 @@
 
 static struct sockaddr_in old;
 
-SEC("ksyscall/connect")
-int BPF_KSYSCALL(handle_sys_connect, int fd, struct sockaddr_in *uservaddr, int addrlen)
+static int handle_sys_connect_common(struct sockaddr_in *uservaddr)
 {
 	struct sockaddr_in new;
 
@@ -19,4 +18,30 @@ int BPF_KSYSCALL(handle_sys_connect, int fd, struct sockaddr_in *uservaddr, int
 	return 0;
 }
 
+SEC("ksyscall/connect")
+int BPF_KSYSCALL(handle_sys_connect, int fd, struct sockaddr_in *uservaddr,
+		 int addrlen)
+{
+	return handle_sys_connect_common(uservaddr);
+}
+
+#if defined(bpf_target_s390)
+#ifndef SYS_CONNECT
+#define SYS_CONNECT 3
+#endif
+
+SEC("ksyscall/socketcall")
+int BPF_KSYSCALL(handle_sys_socketcall, int call, unsigned long *args)
+{
+	if (call == SYS_CONNECT) {
+		struct sockaddr_in *uservaddr;
+
+		bpf_probe_read_user(&uservaddr, sizeof(uservaddr), &args[1]);
+		return handle_sys_connect_common(uservaddr);
+	}
+
+	return 0;
+}
+#endif
+
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
index 17f2f325b3f3..df0673c4ecbe 100644
--- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
@@ -14,15 +14,24 @@
 #include <linux/if_packet.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
+#include <linux/icmp.h>
 #include <linux/types.h>
 #include <linux/socket.h>
 #include <linux/pkt_cls.h>
 #include <linux/erspan.h>
+#include <linux/udp.h>
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
 #define log_err(__ret) bpf_printk("ERROR line:%d ret:%d\n", __LINE__, __ret)
 
+#define VXLAN_UDP_PORT 4789
+
+/* Only IPv4 address assigned to veth1.
+ * 172.16.1.200
+ */
+#define ASSIGNED_ADDR_VETH1 0xac1001c8
+
 struct geneve_opt {
 	__be16	opt_class;
 	__u8	type;
@@ -33,6 +42,11 @@ struct geneve_opt {
 	__u8	opt_data[8]; /* hard-coded to 8 byte */
 };
 
+struct vxlanhdr {
+	__be32 vx_flags;
+	__be32 vx_vni;
+} __attribute__((packed));
+
 struct vxlan_metadata {
 	__u32     gbp;
 };
@@ -369,14 +383,8 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
 	int ret;
 	struct bpf_tunnel_key key;
 	struct vxlan_metadata md;
+	__u32 orig_daddr;
 	__u32 index = 0;
-	__u32 *local_ip = NULL;
-
-	local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
-	if (!local_ip) {
-		log_err(ret);
-		return TC_ACT_SHOT;
-	}
 
 	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
 	if (ret < 0) {
@@ -390,11 +398,10 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
 		return TC_ACT_SHOT;
 	}
 
-	if (key.local_ipv4 != *local_ip || md.gbp != 0x800FF) {
+	if (key.local_ipv4 != ASSIGNED_ADDR_VETH1 || md.gbp != 0x800FF) {
 		bpf_printk("vxlan key %d local ip 0x%x remote ip 0x%x gbp 0x%x\n",
 			   key.tunnel_id, key.local_ipv4,
 			   key.remote_ipv4, md.gbp);
-		bpf_printk("local_ip 0x%x\n", *local_ip);
 		log_err(ret);
 		return TC_ACT_SHOT;
 	}
@@ -403,6 +410,61 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
 }
 
 SEC("tc")
+int veth_set_outer_dst(struct __sk_buff *skb)
+{
+	struct ethhdr *eth = (struct ethhdr *)(long)skb->data;
+	__u32 assigned_ip = bpf_htonl(ASSIGNED_ADDR_VETH1);
+	void *data_end = (void *)(long)skb->data_end;
+	struct udphdr *udph;
+	struct iphdr *iph;
+	__u32 index = 0;
+	int ret = 0;
+	int shrink;
+	__s64 csum;
+
+	if ((void *)eth + sizeof(*eth) > data_end) {
+		log_err(ret);
+		return TC_ACT_SHOT;
+	}
+
+	if (eth->h_proto != bpf_htons(ETH_P_IP))
+		return TC_ACT_OK;
+
+	iph = (struct iphdr *)(eth + 1);
+	if ((void *)iph + sizeof(*iph) > data_end) {
+		log_err(ret);
+		return TC_ACT_SHOT;
+	}
+	if (iph->protocol != IPPROTO_UDP)
+		return TC_ACT_OK;
+
+	udph = (struct udphdr *)(iph + 1);
+	if ((void *)udph + sizeof(*udph) > data_end) {
+		log_err(ret);
+		return TC_ACT_SHOT;
+	}
+	if (udph->dest != bpf_htons(VXLAN_UDP_PORT))
+		return TC_ACT_OK;
+
+	if (iph->daddr != assigned_ip) {
+		csum = bpf_csum_diff(&iph->daddr, sizeof(__u32), &assigned_ip,
+				     sizeof(__u32), 0);
+		if (bpf_skb_store_bytes(skb, ETH_HLEN + offsetof(struct iphdr, daddr),
+					&assigned_ip, sizeof(__u32), 0) < 0) {
+			log_err(ret);
+			return TC_ACT_SHOT;
+		}
+		if (bpf_l3_csum_replace(skb, ETH_HLEN + offsetof(struct iphdr, check),
+					0, csum, 0) < 0) {
+			log_err(ret);
+			return TC_ACT_SHOT;
+		}
+		bpf_skb_change_type(skb, PACKET_HOST);
+	}
+	return TC_ACT_OK;
+}
+
+SEC("tc")
 int ip6vxlan_set_tunnel_dst(struct __sk_buff *skb)
 {
 	struct bpf_tunnel_key key;
diff --git a/tools/testing/selftests/bpf/vmtest.sh b/tools/testing/selftests/bpf/vmtest.sh
index e0bb04a97e10..b86ae4a2e5c5 100755
--- a/tools/testing/selftests/bpf/vmtest.sh
+++ b/tools/testing/selftests/bpf/vmtest.sh
@@ -30,8 +30,7 @@ DEFAULT_COMMAND="./test_progs"
 MOUNT_DIR="mnt"
 ROOTFS_IMAGE="root.img"
 OUTPUT_DIR="$HOME/.bpf_selftests"
-KCONFIG_URL="https://raw.githubusercontent.com/libbpf/libbpf/master/travis-ci/vmtest/configs/config-latest.${ARCH}"
-KCONFIG_API_URL="https://api.github.com/repos/libbpf/libbpf/contents/travis-ci/vmtest/configs/config-latest.${ARCH}"
+KCONFIG_REL_PATHS=("tools/testing/selftests/bpf/config" "tools/testing/selftests/bpf/config.${ARCH}")
 INDEX_URL="https://raw.githubusercontent.com/libbpf/ci/master/INDEX"
 NUM_COMPILE_JOBS="$(nproc)"
 LOG_FILE_BASE="$(date +"bpf_selftests.%Y-%m-%d_%H-%M-%S")"
@@ -269,26 +268,42 @@ is_rel_path()
 	[[ ${path:0:1} != "/" ]]
 }
 
+do_update_kconfig()
+{
+	local kernel_checkout="$1"
+	local kconfig_file="$2"
+
+	rm -f "$kconfig_file" 2> /dev/null
+
+	for config in "${KCONFIG_REL_PATHS[@]}"; do
+		local kconfig_src="${kernel_checkout}/${config}"
+		cat "$kconfig_src" >> "$kconfig_file"
+	done
+}
+
 update_kconfig()
 {
-	local kconfig_file="$1"
-	local update_command="curl -sLf ${KCONFIG_URL} -o ${kconfig_file}"
-	# Github does not return the "last-modified" header when retrieving the
-	# raw contents of the file. Use the API call to get the last-modified
-	# time of the kernel config and only update the config if it has been
-	# updated after the previously cached config was created. This avoids
-	# unnecessarily compiling the kernel and selftests.
-	if [[ -f "${kconfig_file}" ]]; then
-		local last_modified_date="$(curl -sL -D - "${KCONFIG_API_URL}" -o /dev/null | \
-			grep "last-modified" | awk -F ': ' '{print $2}')"
-		local remote_modified_timestamp="$(date -d "${last_modified_date}" +"%s")"
-		local local_creation_timestamp="$(stat -c %Y "${kconfig_file}")"
+	local kernel_checkout="$1"
+	local kconfig_file="$2"
 
-		if [[ "${remote_modified_timestamp}" -gt "${local_creation_timestamp}" ]]; then
-			${update_command}
-		fi
+	if [[ -f "${kconfig_file}" ]]; then
+		local local_modified="$(stat -c %Y "${kconfig_file}")"
+
+		for config in "${KCONFIG_REL_PATHS[@]}"; do
+			local kconfig_src="${kernel_checkout}/${config}"
+			local src_modified="$(stat -c %Y "${kconfig_src}")"
+			# Only update the config if it has been updated after the
+			# previously cached config was created. This avoids
+			# unnecessarily compiling the kernel and selftests.
+			if [[ "${src_modified}" -gt "${local_modified}" ]]; then
+				do_update_kconfig "$kernel_checkout" "$kconfig_file"
+				# Once we have found one outdated configuration
+				# there is no need to check other ones.
+				break
+			fi
+		done
 	else
-		${update_command}
+		do_update_kconfig "$kernel_checkout" "$kconfig_file"
 	fi
 }
 
@@ -372,7 +387,7 @@ main()
 
 	mkdir -p "${OUTPUT_DIR}"
 	mkdir -p "${mount_dir}"
-	update_kconfig "${kconfig_file}"
+	update_kconfig "${kernel_checkout}" "${kconfig_file}"
 
 	recompile_kernel "${kernel_checkout}" "${make_command}"