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2018-10-20bpf, verifier: fix register type dump in xadd and stDaniel Borkmann
Using reg_type_str[insn->dst_reg] is incorrect since insn->dst_reg contains the register number but not the actual register type. Add a small reg_state() helper and use it to get to the type. Also fix up the test_verifier test cases that have an incorrect errstr. Fixes: 9d2be44a7f33 ("bpf: Reuse canonical string formatter for ctx errs") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-20bpf: test_sockmap add options to use msg_push_dataJohn Fastabend
Add options to run msg_push_data, this patch creates two more flags in test_sockmap that can be used to specify the offset and length of bytes to be added. The new options are --txmsg_start_push to specify where bytes should be inserted and --txmsg_end_push to specify how many bytes. This is analagous to the options that are used to pull data, --txmsg_start and --txmsg_end. In addition to adding the options tests are added to the test suit to run the tests similar to what was done for msg_pull_data. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-20bpf: libbpf support for msg_push_dataJohn Fastabend
Add support for new bpf_msg_push_data in libbpf. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-20Merge tag 'trace-v4.19-rc8-2' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Steven writes: "tracing: A few small fixes to synthetic events Masami found some issues with the creation of synthetic events. The first two patches fix handling of unsigned type, and handling of a space before an ending semi-colon. The third patch adds a selftest to test the processing of synthetic events." * tag 'trace-v4.19-rc8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: selftests: ftrace: Add synthetic event syntax testcase tracing: Fix synthetic event to allow semicolon at end tracing: Fix synthetic event to accept unsigned modifier
2018-10-20selftests/powerpc: Add a test of wild bctrMichael Ellerman
This tests that a bctr (Branch to counter and link), ie. a function call, to a wildly out-of-bounds address is handled correctly. Some old kernel versions didn't handle it correctly, see eg: "powerpc/slb: Force a full SLB flush when we insert for a bad EA" https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/157397.html Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-20selftests/powerpc: Fix out-of-tree build errorsMichael Ellerman
Some of our Makefiles don't do the right thing when building the selftests with O=, fix them up. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-20selftests/powerpc: Add test to verify rfi flush across a system callNaveen N. Rao
This adds a test to verify proper functioning of the rfi flush capability implemented to mitigate meltdown. The test works by measuring the number of L1d cache misses encountered while loading data from memory. Across a system call, since the L1d cache is flushed when rfi_flush is enabled, the number of cache misses is expected to be relative to the number of cachelines corresponding to the data being loaded. The current system setting is reflected via powerpc/rfi_flush under debugfs (assumed to be /sys/kernel/debug/). This test verifies the expected result with rfi_flush enabled as well as when it is disabled. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> [mpe: Add SPDX tags, clang format, skip if the debugfs is missing, use __u64 and SANE_USERSPACE_TYPES to avoid printf() build errors.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-20selftests/powerpc: Move UCONTEXT_NIA() into utils.hNaveen N. Rao
... so that it can be used by others. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-19selftests: ftrace: Add synthetic event syntax testcaseMasami Hiramatsu
Add a testcase to check the syntax and field types for synthetic_events interface. Link: http://lkml.kernel.org/r/153986838264.18251.16627517536956299922.stgit@devbox Acked-by: Shuah Khan <shuah@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2018-10-19bpf: add tests for direct packet access from CGROUP_SKBSong Liu
Tests are added to make sure CGROUP_SKB cannot access: tc_classid, data_meta, flow_keys and can read and write: mark, prority, and cb[0-4] and can read other fields. To make selftest with skb->sk work, a dummy sk is added in bpf_prog_test_run_skb(). Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-19selftests/bpf: add missing executables to .gitignoreAnders Roxell
Fixes: 371e4fcc9d96 ("selftests/bpf: cgroup local storage-based network counters") Fixes: 370920c47b26 ("selftests/bpf: Test libbpf_{prog,attach}_type_by_name") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-19selftests/bpf: add test cases for queue and stack mapsMauricio Vasquez B
test_maps: Tests that queue/stack maps are behaving correctly even in corner cases test_progs: Tests new ebpf helpers Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
net/sched/cls_api.c has overlapping changes to a call to nlmsg_parse(), one (from 'net') added rtm_tca_policy instead of NULL to the 5th argument, and another (from 'net-next') added cb->extack instead of NULL to the 6th argument. net/ipv4/ipmr_base.c is a case of a bug fix in 'net' being done to code which moved (to mr_table_dump)) in 'net-next'. Thanks to David Ahern for the heads up. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-19Merge tag 'usb-4.19-final' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb I wrote: "USB fixes for 4.19-final Here are a small number of last-minute USB driver fixes Included here are: - spectre fix for usb storage gadgets - xhci fixes - cdc-acm fixes - usbip fixes for reported problems All of these have been in linux-next with no reported issues." * tag 'usb-4.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: gadget: storage: Fix Spectre v1 vulnerability USB: fix the usbfs flag sanitization for control transfers usb: xhci: pci: Enable Intel USB role mux on Apollo Lake platforms usb: roles: intel_xhci: Fix Unbalanced pm_runtime_enable cdc-acm: correct counting of UART states in serial state notification cdc-acm: do not reset notification buffer index upon urb unlinking cdc-acm: fix race between reset and control messaging usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in vhci_hub_control() selftests: usbip: add wait after attach and before checking port status
2018-10-19selftests/kvm: add missing executables to .gitignoreAnders Roxell
Fixes: 18178ff86217 ("KVM: selftests: add Enlightened VMCS test") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-18selftests/bpf: fix file resource leak in load_kallsymsPeng Hao
FILE pointer variable f is opened but never closed. Signed-off-by: Peng Hao <peng.hao2@zte.com.cn> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-17tools/testing/nvdimm: Populate dirty shutdown dataDan Williams
Allow the unit tests to verify the retrieval of the dirty shutdown count via smart commands, and allow the driver-load-time retrieval of the smart health payload to be simulated by nfit_test. Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-10-17acpi, nfit: Collect shutdown statusDan Williams
Some NVDIMMs, in addition to providing an indication of whether the previous shutdown was clean, also provide a running count of lifetime dirty-shutdown events for the device. In anticipation of this functionality appearing on more devices arrange for the nfit driver to retrieve / cache this data at DIMM discovery time, and export it via sysfs. Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-10-17bpf: sockmap, add msg_peek tests to test_sockmapJohn Fastabend
Add tests that do a MSG_PEEK recv followed by a regular receive to test flag support. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-17KVM: selftests: add Enlightened VMCS testVitaly Kuznetsov
Modify test library and add eVMCS test. This includes nVMX save/restore testing. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17KVM: selftests: state_test: test bare VMXON migrationVitaly Kuznetsov
Split prepare_for_vmx_operation() into prepare_for_vmx_operation() and load_vmcs() so we can inject GUEST_SYNC() in between. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: support high GPAs in dirty_log_testAndrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: stop lying to aarch64 tests about PA-bitsAndrew Jones
Let's add the 40 PA-bit versions of the VM modes, that AArch64 should have been using, so we can extend the dirty log test without breaking things. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: dirty_log_test: also test 64K pages on aarch64Andrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: port dirty_log_test to aarch64Andrew Jones
While we're messing with the code for the port and to support guest page sizes that are less than the host page size, we also make some code formatting cleanups and apply sync_global_to_guest(). Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: introduce new VM mode for 64K pagesAndrew Jones
Rename VM_MODE_FLAT48PG to be more descriptive of its config and add a new config that has the same parameters, except with 64K pages. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: add vcpu support for aarch64Andrew Jones
This code adds VM and VCPU setup code for the VM_MODE_FLAT48PG mode. The VM_MODE_FLAT48PG isn't yet fully supportable, as it defines the guest physical address limit as 52-bits, and KVM currently only supports guests with up to 40-bit physical addresses (see KVM_PHYS_SHIFT). VM_MODE_FLAT48PG will work fine, though, as long as no >= 40-bit physical addresses are used. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: add virt mem support for aarch64Andrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: add vm_phy_pages_allocAndrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: tidy up kvm_utilAndrew Jones
Tidy up kvm-util code: code/comment formatting, remove unused code, and move x86 specific code out. We also move vcpu_dump() out of common code, because not all arches (AArch64) have KVM_GET_REGS. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: add cscope make targetAndrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: move arch-specific files to arch-specific locationsAndrew Jones
Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: introduce ucallAndrew Jones
Rework the guest exit to userspace code to generalize the concept into what it is, a "hypercall to userspace", and provide two implementations of it: the PortIO version currently used, but only useable by x86, and an MMIO version that other architectures (except s390) can use. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-17kvm: selftests: vcpu_setup: set cr4.osfxsrAndrew Jones
Guest code may want to call functions that have variable arguments. To do so, we either need to compile with -mno-sse or enable SSE in the VCPUs. As it should be pretty safe to turn on the feature, and -mno-sse would make linking test code with standard libraries difficult, we choose the feature enabling. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-16bpf, tls: add tls header to tools infrastructureDaniel Borkmann
Andrey reported a build error for the BPF kselftest suite when compiled on a machine which does not have tls related header bits installed natively: test_sockmap.c:120:23: fatal error: linux/tls.h: No such file or directory #include <linux/tls.h> ^ compilation terminated. Fix it by adding the header to the tools include infrastructure and add definitions such as SOL_TLS that could potentially be missing. Fixes: e9dd904708c4 ("bpf: add tls support for testing in test_sockmap") Reported-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-10-16 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Convert BPF sockmap and kTLS to both use a new sk_msg API and enable sk_msg BPF integration for the latter, from Daniel and John. 2) Enable BPF syscall side to indicate for maps that they do not support a map lookup operation as opposed to just missing key, from Prashant. 3) Add bpftool map create command which after map creation pins the map into bpf fs for further processing, from Jakub. 4) Add bpftool support for attaching programs to maps allowing sock_map and sock_hash to be used from bpftool, from John. 5) Improve syscall BPF map update/delete path for map-in-map types to wait a RCU grace period for pending references to complete, from Daniel. 6) Couple of follow-up fixes for the BPF socket lookup to get it enabled also when IPv6 is compiled as a module, from Joe. 7) Fix a generic-XDP bug to handle the case when the Ethernet header was mangled and thus update skb's protocol and data, from Jesper. 8) Add a missing BTF header length check between header copies from user space, from Wenwen. 9) Minor fixups in libbpf to use __u32 instead u32 types and include proper perf_event.h uapi header instead of perf internal one, from Yonghong. 10) Allow to pass user-defined flags through EXTRA_CFLAGS and EXTRA_LDFLAGS to bpftool's build, from Jiri. 11) BPF kselftest tweaks to add LWTUNNEL to config fragment and to install with_addr.sh script from flow dissector selftest, from Anders. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-15selftests: pmtu: Add optional traffic captures for single testsStefano Brivio
If --trace is passed as an option and tcpdump is available, capture traffic for all relevant interfaces to per-test pcap files named <test>_<interface>.pcap. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-15selftests: pmtu: Allow selection of single testsStefano Brivio
As number of tests is growing, it's quite convenient to allow single tests to be run. Display usage when the script is run with any invalid argument, keep existing semantics when no arguments are passed so that automated runs won't break. Instead of just looping on the list of requested tests, if any, check first that they exist, and go through them in a nested loop to keep the existing way to display test descriptions. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-15bpf: add tls support for testing in test_sockmapJohn Fastabend
This adds a --ktls option to test_sockmap in order to enable the combination of ktls and sockmap to run, which makes for another batch of 648 test cases for both in combination. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf 2018-10-14 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix xsk map update and delete operation to not call synchronize_net() but to piggy back on SOCK_RCU_FREE for sockets instead as we are not allowed to sleep under RCU, from Björn. 2) Do not change RLIMIT_MEMLOCK in reuseport_bpf selftest if the process already has unlimited RLIMIT_MEMLOCK, from Eric. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts were easy to resolve using immediate context mostly, except the cls_u32.c one where I simply too the entire HEAD chunk. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11selftests: use posix-style redirection in ip_defrag.shPaolo Abeni
The ip_defrag.sh script requires bash-style output redirection but use the default shell. This may cause random failures if the default shell is not bash. Address the above using posix compliant output redirection. Fixes: 02c7f38b7ace ("selftests/net: add ip_defrag selftest") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11selftests: udpgso_bench.sh explicitly requires bashPaolo Abeni
The udpgso_bench.sh script requires several bash-only features. This may cause random failures if the default shell is not bash. Address the above explicitly requiring bash as the script interpreter Fixes: 3a687bef148d ("selftests: udp gso benchmark") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11selftests: rtnetlink.sh explicitly requires bash.Paolo Abeni
the script rtnetlink.sh requires a bash-only features (sleep with sub-second precision). This may cause random test failure if the default shell is not bash. Address the above explicitly requiring bash as the script interpreter. Fixes: 33b01b7b4f19 ("selftests: add rtnetlink test script") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11selftests: bpf: install script with_addr.shAnders Roxell
When test_flow_dissector.sh runs it complains that it can't find script with_addr.sh: ./test_flow_dissector.sh: line 81: ./with_addr.sh: No such file or directory Rework so that with_addr.sh gets installed, add it to TEST_PROGS_EXTENDED variable. Fixes: 50b3ed57dee9 ("selftests/bpf: test bpf flow dissection") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-11selftests: bpf: add config fragment LWTUNNELAnders Roxell
When test_lwt_seg6local.sh was added commit c99a84eac026 ("selftests/bpf: test for seg6local End.BPF action") config fragment wasn't added, and without CONFIG_LWTUNNEL enabled we see this: Error: CONFIG_LWTUNNEL is not enabled in this kernel. selftests: test_lwt_seg6local [FAILED] Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-10selftests: mlxsw: qos_mc_aware: Make executablePetr Machata
This is a self-standing test and as such should be itself executable. Fixes: b5638d46c90a ("selftests: mlxsw: Add a test for UC behavior under MC flood") Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-10selftests: forwarding: Have lldpad_app_wait_set() wait for unknown, tooPetr Machata
Immediately after mlxsw module is probed and lldpad started, added APP entries are briefly in "unknown" state before becoming "pending". That's the state that lldpad_app_wait_set() typically sees, and since there are no pending entries at that time, it bails out. However the entries have not been pushed to the kernel yet at that point, and thus the test case fails. Fix by waiting for both unknown and pending entries to disappear before proceeding. Fixes: d159261f3662 ("selftests: mlxsw: Add test for trust-DSCP") Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-09selftests/bpf: add XDP selftests for modifying and popping VLAN headersJesper Dangaard Brouer
This XDP selftest also contain a small TC-bpf component. It provoke the generic-XDP bug fixed in previous commit. The selftest itself shows how to do VLAN manipulation from XDP and TC. The test demonstrate how XDP ingress can remove a VLAN tag, and how TC egress can add back a VLAN tag. This use-case originates from a production need by ISP (kviknet.dk), who gets DSL-lines terminated as VLAN Q-in-Q tagged packets, and want to avoid having an net_device for every end-customer on the box doing the L2 to L3 termination. The test-setup is done via a veth-pair and creating two network namespaces (ns1 and ns2). The 'ns1' simulate the ISP network that are loading the BPF-progs stripping and adding VLAN IDs. The 'ns2' simulate the DSL-customer that are using VLAN tagged packets. Running the script with --interactive, will simply not call the cleanup function. This gives the effect of creating a testlab, that the users can inspect and play with. The --verbose option will simply request that the shell will print input lines as they are read, this include comments, which in effect make the comments visible docs. Reported-by: Yoel Caspersen <yoel@kviknet.dk> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-09bpf: make TC vlan bpf_helpers avail to selftestsJesper Dangaard Brouer
The helper bpf_skb_vlan_push is needed by next patch, and the helper bpf_skb_vlan_pop is added for completeness, regarding VLAN helpers. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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